diff --git a/Make AVR Examples/AVR-Programming-Library/.gitignore b/Make AVR Examples/AVR-Programming-Library/.gitignore
new file mode 100644
index 0000000..df3d5dd
--- /dev/null
+++ b/Make AVR Examples/AVR-Programming-Library/.gitignore	
@@ -0,0 +1,2 @@
+binaryMacroDemo.c
+
diff --git a/Make AVR Examples/AVR-Programming-Library/Makefile b/Make AVR Examples/AVR-Programming-Library/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/AVR-Programming-Library/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/AVR-Programming-Library/README.md b/Make AVR Examples/AVR-Programming-Library/README.md
new file mode 100644
index 0000000..1bed580
--- /dev/null
+++ b/Make AVR Examples/AVR-Programming-Library/README.md	
@@ -0,0 +1,30 @@
+AVR-Programming-Library
+=======================
+
+Files that are re-used throughout the book *Make: AVR Programming*
+
+* **pinDefines.h**
+	Includes all of the pin definitions for the projects in *Make: AVR Programming*.  When you
+	need to know what to hook up where, have a look here.
+
+* **USART.c** and **USART.h**
+	These are the main utility files used for serial input/output in the book.  They're not
+	particularly clever, but they have a tiny memory and resource footprint and get you
+	up and running very quickly.
+
+* **binaryMacro.h**
+	If you're using a compiler other than a recent AVR-GCC, it may not support
+	native binary digits (e.g. 0b00111010).  If so, this include file has a pre-processor
+	macro that will let you enter them similarly: B8(01010101).  
+
+* **macros.h**
+	This file includes pre-processor macro definitions for bit-twiddling: 
+	set_bit, clear_bit, and toggle_bit.  Useful for those days when you're feeling
+	lazy, or have forgotten your bit-wise logic operations.
+
+* **portpins.h**
+	This is a recent version of the portpins.h file included with the Arduino environment.
+	It includes the AVR pin definitions of the form PB1 and similar.  The version included
+	with Arduino is very old -- you'll want to replace it with this one if you want to write
+	in C using the Arduino IDE. Or you can include this file directly in your code.
+
diff --git a/Make AVR Examples/AVR-Programming-Library/USART.c b/Make AVR Examples/AVR-Programming-Library/USART.c
new file mode 100644
index 0000000..7e8139a
--- /dev/null
+++ b/Make AVR Examples/AVR-Programming-Library/USART.c	
@@ -0,0 +1,137 @@
+
+/*
+  Quick and dirty functions that make serial communications work.
+
+  Note that receiveByte() blocks -- it sits and waits _forever_ for
+   a byte to come in.  If you're doing anything that's more interesting,
+   you'll want to implement this with interrupts.
+
+   initUSART requires BAUDRATE to be defined in order to calculate
+     the bit-rate multiplier.  9600 is a reasonable default.
+
+  May not work with some of the older chips:
+    Tiny2313, Mega8, Mega16, Mega32 have different pin macros
+    If you're using these chips, see (e.g.) iom8.h for how it's done.
+    These old chips don't specify UDR0 vs UDR1.
+    Correspondingly, the macros will just be defined as UDR.
+*/
+
+#include <avr/io.h>
+#include "USART.h"
+#include <util/setbaud.h>
+
+void initUSART(void) {                                /* requires BAUD */
+  UBRR0H = UBRRH_VALUE;                        /* defined in setbaud.h */
+  UBRR0L = UBRRL_VALUE;
+#if USE_2X
+  UCSR0A |= (1 << U2X0);
+#else
+  UCSR0A &= ~(1 << U2X0);
+#endif
+                                  /* Enable USART transmitter/receiver */
+  UCSR0B = (1 << TXEN0) | (1 << RXEN0);
+  UCSR0C = (1 << UCSZ01) | (1 << UCSZ00);   /* 8 data bits, 1 stop bit */
+}
+
+
+void transmitByte(uint8_t data) {
+                                     /* Wait for empty transmit buffer */
+  loop_until_bit_is_set(UCSR0A, UDRE0);
+  UDR0 = data;                                            /* send data */
+}
+
+uint8_t receiveByte(void) {
+  loop_until_bit_is_set(UCSR0A, RXC0);       /* Wait for incoming data */
+  return UDR0;                                /* return register value */
+}
+
+
+                       /* Here are a bunch of useful printing commands */
+
+void printString(const char myString[]) {
+  uint8_t i = 0;
+  while (myString[i]) {
+    transmitByte(myString[i]);
+    i++;
+  }
+}
+
+void readString(char myString[], uint8_t maxLength) {
+  char response;
+  uint8_t i;
+  i = 0;
+  while (i < (maxLength - 1)) {                   /* prevent over-runs */
+    response = receiveByte();
+    transmitByte(response);                                    /* echo */
+    if (response == '\r') {                     /* enter marks the end */
+      break;
+    }
+    else {
+      myString[i] = response;                       /* add in a letter */
+      i++;
+    }
+  }
+  myString[i] = 0;                          /* terminal NULL character */
+}
+
+void printByte(uint8_t byte) {
+              /* Converts a byte to a string of decimal text, sends it */
+  transmitByte('0' + (byte / 100));                        /* Hundreds */
+  transmitByte('0' + ((byte / 10) % 10));                      /* Tens */
+  transmitByte('0' + (byte % 10));                             /* Ones */
+}
+
+void printWord(uint16_t word) {
+  transmitByte('0' + (word / 10000));                 /* Ten-thousands */
+  transmitByte('0' + ((word / 1000) % 10));               /* Thousands */
+  transmitByte('0' + ((word / 100) % 10));                 /* Hundreds */
+  transmitByte('0' + ((word / 10) % 10));                      /* Tens */
+  transmitByte('0' + (word % 10));                             /* Ones */
+}
+
+void printBinaryByte(uint8_t byte) {
+                       /* Prints out a byte as a series of 1's and 0's */
+  uint8_t bit;
+  for (bit = 7; bit < 255; bit--) {
+    if (bit_is_set(byte, bit))
+      transmitByte('1');
+    else
+      transmitByte('0');
+  }
+}
+
+char nibbleToHexCharacter(uint8_t nibble) {
+                                   /* Converts 4 bits into hexadecimal */
+  if (nibble < 10) {
+    return ('0' + nibble);
+  }
+  else {
+    return ('A' + nibble - 10);
+  }
+}
+
+void printHexByte(uint8_t byte) {
+                        /* Prints a byte as its hexadecimal equivalent */
+  uint8_t nibble;
+  nibble = (byte & 0b11110000) >> 4;
+  transmitByte(nibbleToHexCharacter(nibble));
+  nibble = byte & 0b00001111;
+  transmitByte(nibbleToHexCharacter(nibble));
+}
+
+uint8_t getNumber(void) {
+  // Gets a numerical 0-255 from the serial port.
+  // Converts from string to number.
+  char hundreds = '0';
+  char tens = '0';
+  char ones = '0';
+  char thisChar = '0';
+  do {                                                   /* shift over */
+    hundreds = tens;
+    tens = ones;
+    ones = thisChar;
+    thisChar = receiveByte();                   /* get a new character */
+    transmitByte(thisChar);                                    /* echo */
+  } while (thisChar != '\r');                     /* until type return */
+  return (100 * (hundreds - '0') + 10 * (tens - '0') + ones - '0');
+}
diff --git a/Make AVR Examples/AVR-Programming-Library/USART.h b/Make AVR Examples/AVR-Programming-Library/USART.h
new file mode 100644
index 0000000..8d02081
--- /dev/null
+++ b/Make AVR Examples/AVR-Programming-Library/USART.h	
@@ -0,0 +1,45 @@
+/* Functions to initialize, send, receive over USART
+
+   initUSART requires BAUD to be defined in order to calculate
+     the bit-rate multiplier.
+ */
+
+#ifndef BAUD                          /* if not defined in Makefile... */
+#define BAUD  9600                     /* set a safe default baud rate */
+#endif
+
+                                  /* These are defined for convenience */
+#define   USART_HAS_DATA   bit_is_set(UCSR0A, RXC0)
+#define   USART_READY      bit_is_set(UCSR0A, UDRE0)
+
+/* Takes the defined BAUD and F_CPU,
+   calculates the bit-clock multiplier,
+   and configures the hardware USART                   */
+void initUSART(void);
+
+/* Blocking transmit and receive functions.
+   When you call receiveByte() your program will hang until
+   data comes through.  We'll improve on this later. */
+void transmitByte(uint8_t data);
+uint8_t receiveByte(void);
+
+void printString(const char myString[]);
+             /* Utility function to transmit an entire string from RAM */
+void readString(char myString[], uint8_t maxLength);
+/* Define a string variable, pass it to this function
+   The string will contain whatever you typed over serial */
+
+void printByte(uint8_t byte);
+                  /* Prints a byte out as its 3-digit ascii equivalent */
+void printWord(uint16_t word);
+        /* Prints a word (16-bits) out as its 5-digit ascii equivalent */
+
+void printBinaryByte(uint8_t byte);
+                                     /* Prints a byte out in 1s and 0s */
+char nibbleToHex(uint8_t nibble);
+char nibbleToHexCharacter(uint8_t nibble);
+void printHexByte(uint8_t byte);
+                                   /* Prints a byte out in hexadecimal */
+uint8_t getNumber(void);
+/* takes in up to three ascii digits,
+ converts them to a byte when press enter */
diff --git a/Make AVR Examples/AVR-Programming-Library/binaryMacro.h b/Make AVR Examples/AVR-Programming-Library/binaryMacro.h
new file mode 100644
index 0000000..9dff3c1
--- /dev/null
+++ b/Make AVR Examples/AVR-Programming-Library/binaryMacro.h	
@@ -0,0 +1,45 @@
+/* Binary constant generator macro
+By Tom Torfs - donated to the public domain
+*/
+
+/* All macro's evaluate to compile-time constants */
+
+/* *** helper macros *** /
+
+/* turn a numeric literal into a hex constant
+(avoids problems with leading zeroes)
+8-bit constants max value 0x11111111, always fits in unsigned long
+*/
+#define HEX__(n) 0x##n##LU
+
+/* 8-bit conversion function */
+#define B8__(x) ((x&0x0000000FLU)?1:0)	\
++((x&0x000000F0LU)?2:0)	\
++((x&0x00000F00LU)?4:0)	\
++((x&0x0000F000LU)?8:0)	\
++((x&0x000F0000LU)?16:0)	\
++((x&0x00F00000LU)?32:0)	\
++((x&0x0F000000LU)?64:0)	\
++((x&0xF0000000LU)?128:0)
+
+/* *** user macros *** /
+
+/* for upto 8-bit binary constants */
+#define B8(d) ((unsigned char)B8__(HEX__(d)))
+
+/* for upto 16-bit binary constants, MSB first */
+#define B16(dmsb,dlsb) (((unsigned short)B8(dmsb)<<8)	\
++ B8(dlsb))
+
+/* for upto 32-bit binary constants, MSB first */
+#define B32(dmsb,db2,db3,dlsb) (((unsigned long)B8(dmsb)<<24)	 \
++ ((unsigned long)B8(db2)<<16) \
++ ((unsigned long)B8(db3)<<8)	 \
++ B8(dlsb))
+
+/* Sample usage:
+B8(01010101) = 85
+B16(10101010,01010101) = 43605
+B32(10000000,11111111,10101010,01010101) = 2164238933
+*/
+
diff --git a/Make AVR Examples/AVR-Programming-Library/macros.h b/Make AVR Examples/AVR-Programming-Library/macros.h
new file mode 100644
index 0000000..7987b22
--- /dev/null
+++ b/Make AVR Examples/AVR-Programming-Library/macros.h	
@@ -0,0 +1,26 @@
+
+/* Standard Macros */
+/* You can totally get by without these, but why? */
+
+/* Make sure we've already got io / sfr / pindefs loaded */
+#ifndef   _AVR_IO_H_
+#include  <avr/io.h>
+#endif
+
+/* Reminder: the following useful bit-twiddling macros are
+   always included in avr/sfr_defs.h, which is called from
+   avr/io.h 
+
+ bit_is_set(sfr, bit)
+ bit_is_clear(sfr, bit)
+ loop_until_bit_is_set(sfr, bit)
+ loop_until_bit_is_clear(sfr, bit)
+
+*/
+
+/* Define up the full complement of bit-twiddling macros */
+#define BV(bit)               (1 << bit)
+#define set_bit(sfr, bit)     (_SFR_BYTE(sfr) |= BV(bit))  // old sbi()
+#define clear_bit(sfr, bit)   (_SFR_BYTE(sfr) &= ~BV(bit)) // old cbi()
+#define toggle_bit(sfr, bit)  (_SFR_BYTE(sfr) ^= BV(bit))  
+
diff --git a/Make AVR Examples/AVR-Programming-Library/pinDefines.h b/Make AVR Examples/AVR-Programming-Library/pinDefines.h
new file mode 100644
index 0000000..36cd2f0
--- /dev/null
+++ b/Make AVR Examples/AVR-Programming-Library/pinDefines.h	
@@ -0,0 +1,91 @@
+// ---------------
+//   Pin Defines
+// ---------------
+
+#define LED_PORT                PORTB
+#define LED_PIN                 PINB
+#define LED_DDR                 DDRB
+
+#define LED0                    PB0
+#define LED1                    PB1
+#define LED2                    PB2
+#define LED3                    PB3
+#define LED4                    PB4
+#define LED5                    PB5
+#define LED6                    PB6
+#define LED7                    PB7
+
+#define BUTTON_PORT             PORTD
+#define BUTTON_PIN              PIND
+#define BUTTON_DDR              DDRD
+
+#define BUTTON                  PD2
+#define BUTTON2                 PD3
+#define BUTTON3                 PD4
+
+#define SPEAKER                 PD6                            /* OC0A */
+#define SPEAKER_PORT            PORTD
+#define SPEAKER_PIN             PIND
+#define SPEAKER_DDR             DDRD
+
+#define ANTENNA                 PD5                            /* OC0B */
+#define ANTENNA_PORT            PORTD
+#define ANTENNA_PIN             PIND
+#define ANTENNA_DDR             DDRD
+
+#define MODULATION              PD3                            /* OC2B */
+#define MODULATION_PORT         PORTD
+#define MODULATION_PIN          PIND
+#define MODULATION_DDR          DDRD
+
+#define LIGHT_SENSOR            PC0                            /* ADC0 */
+#define LIGHT_SENSOR_PORT       PORTC
+#define LIGHT_SENSOR_PIN        PINC
+#define LIGHT_SENSOR_DDR        DDRC
+
+#define CAP_SENSOR              PC1                            /* ADC1 */
+#define CAP_SENSOR_PORT         PORTC
+#define CAP_SENSOR_PIN          PINC
+#define CAP_SENSOR_DDR          DDRC
+
+#define PIEZO                   PC2                            /* ADC2 */
+#define PIEZO_PORT              PORTC
+#define PIEZO_PIN               PINC
+#define PIEZO_DDR               DDRC
+
+#define POT                     PC3                            /* ADC3 */
+#define POT_PORT                PORTC
+#define POT_PIN                 PINC
+#define POT_DDR                 DDRC
+
+//  SPI and I2C serial mode defines
+
+#define SPI_SS                     PB2
+#define SPI_SS_PORT                PORTB
+#define SPI_SS_PIN                 PINB
+#define SPI_SS_DDR                 DDRB
+
+#define SPI_MOSI                     PB3
+#define SPI_MOSI_PORT                PORTB
+#define SPI_MOSI_PIN                 PINB
+#define SPI_MOSI_DDR                 DDRB
+
+#define SPI_MISO                     PB4
+#define SPI_MISO_PORT                PORTB
+#define SPI_MISO_PIN                 PINB
+#define SPI_MISO_DDR                 DDRB
+
+#define SPI_SCK                     PB5
+#define SPI_SCK_PORT                PORTB
+#define SPI_SCK_PIN                 PINB
+#define SPI_SCK_DDR                 DDRB
+
+#define I2C_SDA                     PC4
+#define I2C_SDA_PORT                PORTC
+#define I2C_SDA_PIN                 PINC
+#define I2C_SDA_DDR                 DDRC
+
+#define I2C_SCL                     PC5
+#define I2C_SCL_PORT                PORTC
+#define I2C_SCL_PIN                 PINC
+#define I2C_SCL_DDR                 DDRC
diff --git a/Make AVR Examples/AVR-Programming-Library/portpins.h b/Make AVR Examples/AVR-Programming-Library/portpins.h
new file mode 100644
index 0000000..6a24830
--- /dev/null
+++ b/Make AVR Examples/AVR-Programming-Library/portpins.h	
@@ -0,0 +1,549 @@
+/* Copyright (c) 2003  Theodore A. Roth
+   All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+
+   * Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+
+   * Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in
+     the documentation and/or other materials provided with the
+     distribution.
+
+   * Neither the name of the copyright holders nor the names of
+     contributors may be used to endorse or promote products derived
+     from this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+  POSSIBILITY OF SUCH DAMAGE. */
+
+/* $Id: portpins.h 1936 2009-03-19 22:19:26Z arcanum $ */
+
+#ifndef _AVR_PORTPINS_H_
+#define _AVR_PORTPINS_H_ 1
+
+/* This file should only be included from <avr/io.h>, never directly. */
+
+#ifndef _AVR_IO_H_
+#  error "Include <avr/io.h> instead of this file."
+#endif
+
+/* Define Generic PORTn, DDn, and PINn values. */
+
+/* Port Data Register (generic) */
+#define    PORT7        7
+#define    PORT6        6
+#define    PORT5        5
+#define    PORT4        4
+#define    PORT3        3
+#define    PORT2        2
+#define    PORT1        1
+#define    PORT0        0
+
+/* Port Data Direction Register (generic) */
+#define    DD7          7
+#define    DD6          6
+#define    DD5          5
+#define    DD4          4
+#define    DD3          3
+#define    DD2          2
+#define    DD1          1
+#define    DD0          0
+
+/* Port Input Pins (generic) */
+#define    PIN7         7
+#define    PIN6         6
+#define    PIN5         5
+#define    PIN4         4
+#define    PIN3         3
+#define    PIN2         2
+#define    PIN1         1
+#define    PIN0         0
+
+/* Define PORTxn an Pxn values for all possible port pins if not defined already by io.h. */
+
+/* PORT A */
+
+#if defined(PA0) && !defined(PORTA0)
+#  define PORTA0 PA0
+#elif defined(PORTA0) && !defined(PA0)
+#  define PA0 PORTA0
+#endif
+#if defined(PA1) && !defined(PORTA1)
+#  define PORTA1 PA1
+#elif defined(PORTA1) && !defined(PA1)
+#  define PA1 PORTA1
+#endif
+#if defined(PA2) && !defined(PORTA2)
+#  define PORTA2 PA2
+#elif defined(PORTA2) && !defined(PA2)
+#  define PA2 PORTA2
+#endif
+#if defined(PA3) && !defined(PORTA3)
+#  define PORTA3 PA3
+#elif defined(PORTA3) && !defined(PA3)
+#  define PA3 PORTA3
+#endif
+#if defined(PA4) && !defined(PORTA4)
+#  define PORTA4 PA4
+#elif defined(PORTA4) && !defined(PA4)
+#  define PA4 PORTA4
+#endif
+#if defined(PA5) && !defined(PORTA5)
+#  define PORTA5 PA5
+#elif defined(PORTA5) && !defined(PA5)
+#  define PA5 PORTA5
+#endif
+#if defined(PA6) && !defined(PORTA6)
+#  define PORTA6 PA6
+#elif defined(PORTA6) && !defined(PA6)
+#  define PA6 PORTA6
+#endif
+#if defined(PA7) && !defined(PORTA7)
+#  define PORTA7 PA7
+#elif defined(PORTA7) && !defined(PA7)
+#  define PA7 PORTA7
+#endif
+
+/* PORT B */
+
+#if defined(PB0) && !defined(PORTB0)
+#  define PORTB0 PB0
+#elif defined(PORTB0) && !defined(PB0)
+#  define PB0 PORTB0
+#endif
+#if defined(PB1) && !defined(PORTB1)
+#  define PORTB1 PB1
+#elif defined(PORTB1) && !defined(PB1)
+#  define PB1 PORTB1
+#endif
+#if defined(PB2) && !defined(PORTB2)
+#  define PORTB2 PB2
+#elif defined(PORTB2) && !defined(PB2)
+#  define PB2 PORTB2
+#endif
+#if defined(PB3) && !defined(PORTB3)
+#  define PORTB3 PB3
+#elif defined(PORTB3) && !defined(PB3)
+#  define PB3 PORTB3
+#endif
+#if defined(PB4) && !defined(PORTB4)
+#  define PORTB4 PB4
+#elif defined(PORTB4) && !defined(PB4)
+#  define PB4 PORTB4
+#endif
+#if defined(PB5) && !defined(PORTB5)
+#  define PORTB5 PB5
+#elif defined(PORTB5) && !defined(PB5)
+#  define PB5 PORTB5
+#endif
+#if defined(PB6) && !defined(PORTB6)
+#  define PORTB6 PB6
+#elif defined(PORTB6) && !defined(PB6)
+#  define PB6 PORTB6
+#endif
+#if defined(PB7) && !defined(PORTB7)
+#  define PORTB7 PB7
+#elif defined(PORTB7) && !defined(PB7)
+#  define PB7 PORTB7
+#endif
+
+/* PORT C */
+
+#if defined(PC0) && !defined(PORTC0)
+#  define PORTC0 PC0
+#elif defined(PORTC0) && !defined(PC0)
+#  define PC0 PORTC0
+#endif
+#if defined(PC1) && !defined(PORTC1)
+#  define PORTC1 PC1
+#elif defined(PORTC1) && !defined(PC1)
+#  define PC1 PORTC1
+#endif
+#if defined(PC2) && !defined(PORTC2)
+#  define PORTC2 PC2
+#elif defined(PORTC2) && !defined(PC2)
+#  define PC2 PORTC2
+#endif
+#if defined(PC3) && !defined(PORTC3)
+#  define PORTC3 PC3
+#elif defined(PORTC3) && !defined(PC3)
+#  define PC3 PORTC3
+#endif
+#if defined(PC4) && !defined(PORTC4)
+#  define PORTC4 PC4
+#elif defined(PORTC4) && !defined(PC4)
+#  define PC4 PORTC4
+#endif
+#if defined(PC5) && !defined(PORTC5)
+#  define PORTC5 PC5
+#elif defined(PORTC5) && !defined(PC5)
+#  define PC5 PORTC5
+#endif
+#if defined(PC6) && !defined(PORTC6)
+#  define PORTC6 PC6
+#elif defined(PORTC6) && !defined(PC6)
+#  define PC6 PORTC6
+#endif
+#if defined(PC7) && !defined(PORTC7)
+#  define PORTC7 PC7
+#elif defined(PORTC7) && !defined(PC7)
+#  define PC7 PORTC7
+#endif
+
+/* PORT D */
+
+#if defined(PD0) && !defined(PORTD0)
+#  define PORTD0 PD0
+#elif defined(PORTD0) && !defined(PD0)
+#  define PD0 PORTD0
+#endif
+#if defined(PD1) && !defined(PORTD1)
+#  define PORTD1 PD1
+#elif defined(PORTD1) && !defined(PD1)
+#  define PD1 PORTD1
+#endif
+#if defined(PD2) && !defined(PORTD2)
+#  define PORTD2 PD2
+#elif defined(PORTD2) && !defined(PD2)
+#  define PD2 PORTD2
+#endif
+#if defined(PD3) && !defined(PORTD3)
+#  define PORTD3 PD3
+#elif defined(PORTD3) && !defined(PD3)
+#  define PD3 PORTD3
+#endif
+#if defined(PD4) && !defined(PORTD4)
+#  define PORTD4 PD4
+#elif defined(PORTD4) && !defined(PD4)
+#  define PD4 PORTD4
+#endif
+#if defined(PD5) && !defined(PORTD5)
+#  define PORTD5 PD5
+#elif defined(PORTD5) && !defined(PD5)
+#  define PD5 PORTD5
+#endif
+#if defined(PD6) && !defined(PORTD6)
+#  define PORTD6 PD6
+#elif defined(PORTD6) && !defined(PD6)
+#  define PD6 PORTD6
+#endif
+#if defined(PD7) && !defined(PORTD7)
+#  define PORTD7 PD7
+#elif defined(PORTD7) && !defined(PD7)
+#  define PD7 PORTD7
+#endif
+
+/* PORT E */
+
+#if defined(PE0) && !defined(PORTE0)
+#  define PORTE0 PE0
+#elif defined(PORTE0) && !defined(PE0)
+#  define PE0 PORTE0
+#endif
+#if defined(PE1) && !defined(PORTE1)
+#  define PORTE1 PE1
+#elif defined(PORTE1) && !defined(PE1)
+#  define PE1 PORTE1
+#endif
+#if defined(PE2) && !defined(PORTE2)
+#  define PORTE2 PE2
+#elif defined(PORTE2) && !defined(PE2)
+#  define PE2 PORTE2
+#endif
+#if defined(PE3) && !defined(PORTE3)
+#  define PORTE3 PE3
+#elif defined(PORTE3) && !defined(PE3)
+#  define PE3 PORTE3
+#endif
+#if defined(PE4) && !defined(PORTE4)
+#  define PORTE4 PE4
+#elif defined(PORTE4) && !defined(PE4)
+#  define PE4 PORTE4
+#endif
+#if defined(PE5) && !defined(PORTE5)
+#  define PORTE5 PE5
+#elif defined(PORTE5) && !defined(PE5)
+#  define PE5 PORTE5
+#endif
+#if defined(PE6) && !defined(PORTE6)
+#  define PORTE6 PE6
+#elif defined(PORTE6) && !defined(PE6)
+#  define PE6 PORTE6
+#endif
+#if defined(PE7) && !defined(PORTE7)
+#  define PORTE7 PE7
+#elif defined(PORTE7) && !defined(PE7)
+#  define PE7 PORTE7
+#endif
+
+/* PORT F */
+
+#if defined(PF0) && !defined(PORTF0)
+#  define PORTF0 PF0
+#elif defined(PORTF0) && !defined(PF0)
+#  define PF0 PORTF0
+#endif
+#if defined(PF1) && !defined(PORTF1)
+#  define PORTF1 PF1
+#elif defined(PORTF1) && !defined(PF1)
+#  define PF1 PORTF1
+#endif
+#if defined(PF2) && !defined(PORTF2)
+#  define PORTF2 PF2
+#elif defined(PORTF2) && !defined(PF2)
+#  define PF2 PORTF2
+#endif
+#if defined(PF3) && !defined(PORTF3)
+#  define PORTF3 PF3
+#elif defined(PORTF3) && !defined(PF3)
+#  define PF3 PORTF3
+#endif
+#if defined(PF4) && !defined(PORTF4)
+#  define PORTF4 PF4
+#elif defined(PORTF4) && !defined(PF4)
+#  define PF4 PORTF4
+#endif
+#if defined(PF5) && !defined(PORTF5)
+#  define PORTF5 PF5
+#elif defined(PORTF5) && !defined(PF5)
+#  define PF5 PORTF5
+#endif
+#if defined(PF6) && !defined(PORTF6)
+#  define PORTF6 PF6
+#elif defined(PORTF6) && !defined(PF6)
+#  define PF6 PORTF6
+#endif
+#if defined(PF7) && !defined(PORTF7)
+#  define PORTF7 PF7
+#elif defined(PORTF7) && !defined(PF7)
+#  define PF7 PORTF7
+#endif
+
+/* PORT G */
+
+#if defined(PG0) && !defined(PORTG0)
+#  define PORTG0 PG0
+#elif defined(PORTG0) && !defined(PG0)
+#  define PG0 PORTG0
+#endif
+#if defined(PG1) && !defined(PORTG1)
+#  define PORTG1 PG1
+#elif defined(PORTG1) && !defined(PG1)
+#  define PG1 PORTG1
+#endif
+#if defined(PG2) && !defined(PORTG2)
+#  define PORTG2 PG2
+#elif defined(PORTG2) && !defined(PG2)
+#  define PG2 PORTG2
+#endif
+#if defined(PG3) && !defined(PORTG3)
+#  define PORTG3 PG3
+#elif defined(PORTG3) && !defined(PG3)
+#  define PG3 PORTG3
+#endif
+#if defined(PG4) && !defined(PORTG4)
+#  define PORTG4 PG4
+#elif defined(PORTG4) && !defined(PG4)
+#  define PG4 PORTG4
+#endif
+#if defined(PG5) && !defined(PORTG5)
+#  define PORTG5 PG5
+#elif defined(PORTG5) && !defined(PG5)
+#  define PG5 PORTG5
+#endif
+#if defined(PG6) && !defined(PORTG6)
+#  define PORTG6 PG6
+#elif defined(PORTG6) && !defined(PG6)
+#  define PG6 PORTG6
+#endif
+#if defined(PG7) && !defined(PORTG7)
+#  define PORTG7 PG7
+#elif defined(PORTG7) && !defined(PG7)
+#  define PG7 PORTG7
+#endif
+
+/* PORT H */
+
+#if defined(PH0) && !defined(PORTH0)
+#  define PORTH0 PH0
+#elif defined(PORTH0) && !defined(PH0)
+#  define PH0 PORTH0
+#endif
+#if defined(PH1) && !defined(PORTH1)
+#  define PORTH1 PH1
+#elif defined(PORTH1) && !defined(PH1)
+#  define PH1 PORTH1
+#endif
+#if defined(PH2) && !defined(PORTH2)
+#  define PORTH2 PH2
+#elif defined(PORTH2) && !defined(PH2)
+#  define PH2 PORTH2
+#endif
+#if defined(PH3) && !defined(PORTH3)
+#  define PORTH3 PH3
+#elif defined(PORTH3) && !defined(PH3)
+#  define PH3 PORTH3
+#endif
+#if defined(PH4) && !defined(PORTH4)
+#  define PORTH4 PH4
+#elif defined(PORTH4) && !defined(PH4)
+#  define PH4 PORTH4
+#endif
+#if defined(PH5) && !defined(PORTH5)
+#  define PORTH5 PH5
+#elif defined(PORTH5) && !defined(PH5)
+#  define PH5 PORTH5
+#endif
+#if defined(PH6) && !defined(PORTH6)
+#  define PORTH6 PH6
+#elif defined(PORTH6) && !defined(PH6)
+#  define PH6 PORTH6
+#endif
+#if defined(PH7) && !defined(PORTH7)
+#  define PORTH7 PH7
+#elif defined(PORTH7) && !defined(PH7)
+#  define PH7 PORTH7
+#endif
+
+/* PORT J */
+
+#if defined(PJ0) && !defined(PORTJ0)
+#  define PORTJ0 PJ0
+#elif defined(PORTJ0) && !defined(PJ0)
+#  define PJ0 PORTJ0
+#endif
+#if defined(PJ1) && !defined(PORTJ1)
+#  define PORTJ1 PJ1
+#elif defined(PORTJ1) && !defined(PJ1)
+#  define PJ1 PORTJ1
+#endif
+#if defined(PJ2) && !defined(PORTJ2)
+#  define PORTJ2 PJ2
+#elif defined(PORTJ2) && !defined(PJ2)
+#  define PJ2 PORTJ2
+#endif
+#if defined(PJ3) && !defined(PORTJ3)
+#  define PORTJ3 PJ3
+#elif defined(PORTJ3) && !defined(PJ3)
+#  define PJ3 PORTJ3
+#endif
+#if defined(PJ4) && !defined(PORTJ4)
+#  define PORTJ4 PJ4
+#elif defined(PORTJ4) && !defined(PJ4)
+#  define PJ4 PORTJ4
+#endif
+#if defined(PJ5) && !defined(PORTJ5)
+#  define PORTJ5 PJ5
+#elif defined(PORTJ5) && !defined(PJ5)
+#  define PJ5 PORTJ5
+#endif
+#if defined(PJ6) && !defined(PORTJ6)
+#  define PORTJ6 PJ6
+#elif defined(PORTJ6) && !defined(PJ6)
+#  define PJ6 PORTJ6
+#endif
+#if defined(PJ7) && !defined(PORTJ7)
+#  define PORTJ7 PJ7
+#elif defined(PORTJ7) && !defined(PJ7)
+#  define PJ7 PORTJ7
+#endif
+
+/* PORT K */
+
+#if defined(PK0) && !defined(PORTK0)
+#  define PORTK0 PK0
+#elif defined(PORTK0) && !defined(PK0)
+#  define PK0 PORTK0
+#endif
+#if defined(PK1) && !defined(PORTK1)
+#  define PORTK1 PK1
+#elif defined(PORTK1) && !defined(PK1)
+#  define PK1 PORTK1
+#endif
+#if defined(PK2) && !defined(PORTK2)
+#  define PORTK2 PK2
+#elif defined(PORTK2) && !defined(PK2)
+#  define PK2 PORTK2
+#endif
+#if defined(PK3) && !defined(PORTK3)
+#  define PORTK3 PK3
+#elif defined(PORTK3) && !defined(PK3)
+#  define PK3 PORTK3
+#endif
+#if defined(PK4) && !defined(PORTK4)
+#  define PORTK4 PK4
+#elif defined(PORTK4) && !defined(PK4)
+#  define PK4 PORTK4
+#endif
+#if defined(PK5) && !defined(PORTK5)
+#  define PORTK5 PK5
+#elif defined(PORTK5) && !defined(PK5)
+#  define PK5 PORTK5
+#endif
+#if defined(PK6) && !defined(PORTK6)
+#  define PORTK6 PK6
+#elif defined(PORTK6) && !defined(PK6)
+#  define PK6 PORTK6
+#endif
+#if defined(PK7) && !defined(PORTK7)
+#  define PORTK7 PK7
+#elif defined(PORTK7) && !defined(PK7)
+#  define PK7 PORTK7
+#endif
+
+/* PORT L */
+
+#if defined(PL0) && !defined(PORTL0)
+#  define PORTL0 PL0
+#elif defined(PORTL0) && !defined(PL0)
+#  define PL0 PORTL0
+#endif
+#if defined(PL1) && !defined(PORTL1)
+#  define PORTL1 PL1
+#elif defined(PORTL1) && !defined(PL1)
+#  define PL1 PORTL1
+#endif
+#if defined(PL2) && !defined(PORTL2)
+#  define PORTL2 PL2
+#elif defined(PORTL2) && !defined(PL2)
+#  define PL2 PORTL2
+#endif
+#if defined(PL3) && !defined(PORTL3)
+#  define PORTL3 PL3
+#elif defined(PORTL3) && !defined(PL3)
+#  define PL3 PORTL3
+#endif
+#if defined(PL4) && !defined(PORTL4)
+#  define PORTL4 PL4
+#elif defined(PORTL4) && !defined(PL4)
+#  define PL4 PORTL4
+#endif
+#if defined(PL5) && !defined(PORTL5)
+#  define PORTL5 PL5
+#elif defined(PORTL5) && !defined(PL5)
+#  define PL5 PORTL5
+#endif
+#if defined(PL6) && !defined(PORTL6)
+#  define PORTL6 PL6
+#elif defined(PORTL6) && !defined(PL6)
+#  define PL6 PORTL6
+#endif
+#if defined(PL7) && !defined(PORTL7)
+#  define PORTL7 PL7
+#elif defined(PORTL7) && !defined(PL7)
+#  define PL7 PORTL7
+#endif
+
+#endif /* _AVR_PORTPINS_H_ */
diff --git a/Make AVR Examples/Chapter02_Programming-AVRs/blinkLED/Makefile b/Make AVR Examples/Chapter02_Programming-AVRs/blinkLED/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter02_Programming-AVRs/blinkLED/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter02_Programming-AVRs/blinkLED/blinkLED.c b/Make AVR Examples/Chapter02_Programming-AVRs/blinkLED/blinkLED.c
new file mode 100644
index 0000000..46a5e54
--- /dev/null
+++ b/Make AVR Examples/Chapter02_Programming-AVRs/blinkLED/blinkLED.c	
@@ -0,0 +1,26 @@
+                                                       /* Blinker Demo */
+
+// ------- Preamble -------- //
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#include <util/delay.h>                     /* Functions to waste time */
+
+
+int main(void) {
+
+  // -------- Inits --------- //
+  DDRB |= 0b00000001;            /* Data Direction Register B:
+                                   writing a one to the bit
+                                   enables output. */
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    PORTB = 0b00000001;          /* Turn on first LED bit/pin in PORTB */
+    _delay_ms(1000);                                           /* wait */
+
+    PORTB = 0b00000000;          /* Turn off all B pins, including LED */
+    _delay_ms(1000);                                           /* wait */
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter02_Programming-AVRs/blinkLED_AVR_style/Makefile b/Make AVR Examples/Chapter02_Programming-AVRs/blinkLED_AVR_style/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter02_Programming-AVRs/blinkLED_AVR_style/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter02_Programming-AVRs/blinkLED_AVR_style/blinkLED_AVRStyle.c b/Make AVR Examples/Chapter02_Programming-AVRs/blinkLED_AVR_style/blinkLED_AVRStyle.c
new file mode 100644
index 0000000..42d2e16
--- /dev/null
+++ b/Make AVR Examples/Chapter02_Programming-AVRs/blinkLED_AVR_style/blinkLED_AVRStyle.c	
@@ -0,0 +1,32 @@
+                                                    /* Blinker Demo II */
+
+#include <avr/io.h>
+#include <util/delay.h>
+
+#define LED      PB0
+#define LED_DDR  DDRB
+#define LED_PORT PORTB
+
+#define DELAYTIME 200
+
+#define setBit(sfr, bit)     (_SFR_BYTE(sfr) |= (1 << bit))
+#define clearBit(sfr, bit)   (_SFR_BYTE(sfr) &= ~(1 << bit))
+#define toggleBit(sfr, bit)  (_SFR_BYTE(sfr) ^= (1 << bit))
+
+int main(void) {
+
+  // Init
+  setBit(LED_DDR, LED);                      /* set LED pin for output */
+
+  // Mainloop
+  while (1) {
+
+    setBit(LED_PORT, LED);
+    _delay_ms(DELAYTIME);
+
+    clearBit(LED_PORT, LED);
+    _delay_ms(DELAYTIME);
+
+  }
+  return 0;                                          /* end mainloop */
+}
diff --git a/Make AVR Examples/Chapter03_Digital-Output/povToy/Makefile b/Make AVR Examples/Chapter03_Digital-Output/povToy/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter03_Digital-Output/povToy/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter03_Digital-Output/povToy/povToy.c b/Make AVR Examples/Chapter03_Digital-Output/povToy/povToy.c
new file mode 100644
index 0000000..88410ec
--- /dev/null
+++ b/Make AVR Examples/Chapter03_Digital-Output/povToy/povToy.c	
@@ -0,0 +1,34 @@
+// POV toy demo framework //
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+
+// -------- Functions --------- //
+void POVDisplay(uint8_t oneByte) {
+  PORTB = oneByte;
+  _delay_ms(2);
+}
+
+int main(void) {
+  // -------- Inits --------- //
+  DDRB = 0xff;                    /* Set up all of LED pins for output */
+  // ------ Event loop ------ //
+  while (1) {                                              /* mainloop */
+    POVDisplay(0b00001110);
+    POVDisplay(0b00011000);
+    POVDisplay(0b10111101);
+    POVDisplay(0b01110110);
+    POVDisplay(0b00111100);
+    POVDisplay(0b00111100);
+    POVDisplay(0b00111100);
+    POVDisplay(0b01110110);
+    POVDisplay(0b10111101);
+    POVDisplay(0b00011000);
+    POVDisplay(0b00001110);
+
+    PORTB = 0;
+    _delay_ms(10);
+  }                                                    /* end mainloop */
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter03_Digital-Output/povToy_1up/1up.c b/Make AVR Examples/Chapter03_Digital-Output/povToy_1up/1up.c
new file mode 100644
index 0000000..5a1f25a
--- /dev/null
+++ b/Make AVR Examples/Chapter03_Digital-Output/povToy_1up/1up.c	
@@ -0,0 +1,59 @@
+/*
+  POV demo by Patrick Roanhouse
+*/
+
+#include <avr/io.h>
+#include <util/delay.h>
+#define DELAYTIME 2                                              /* ms */
+
+uint8_t Star1UP[] = {
+  0b10000100,
+  0b01101100,
+  0b01111110,
+  0b00011111,
+  0b01111110,
+  0b01101100,
+  0b10000100,
+  0b00000000,
+  0b00000000,
+  0b00000000,
+  0b10000010,
+  0b11111111,
+  0b11111111,
+  0b10000000,
+  0b00000000,
+  0b00000000,
+  0b01111111,
+  0b11111111,
+  0b10000000,
+  0b11111111,
+  0b01111111,
+  0b00000000,
+  0b00000000,
+  0b11111111,
+  0b11111111,
+  0b00110011,
+  0b00110011,
+  0b00011110,
+  0b00011110,
+};
+
+
+int main(void) {
+  uint8_t i;
+
+  DDRB = 0xff;                                           /* all output */
+
+  while (1) {                                              /* mainloop */
+    for (i = 0; i < sizeof(Star1UP); i++) {
+           /* sizeof(Star1UP) returns the number of bytes in our array, */
+      PORTB = Star1UP[i];
+      _delay_ms(DELAYTIME);
+    }
+
+    PORTB = 0;                    /* blank for gap between repetitions */
+    _delay_ms(5 * DELAYTIME);
+
+  }                                                    /* end mainloop */
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter03_Digital-Output/povToy_1up/Makefile b/Make AVR Examples/Chapter03_Digital-Output/povToy_1up/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter03_Digital-Output/povToy_1up/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter03_Digital-Output/povToy_cylonEyes/Makefile b/Make AVR Examples/Chapter03_Digital-Output/povToy_cylonEyes/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter03_Digital-Output/povToy_cylonEyes/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter03_Digital-Output/povToy_cylonEyes/cylonEyes_POV.c b/Make AVR Examples/Chapter03_Digital-Output/povToy_cylonEyes/cylonEyes_POV.c
new file mode 100644
index 0000000..588efa6
--- /dev/null
+++ b/Make AVR Examples/Chapter03_Digital-Output/povToy_cylonEyes/cylonEyes_POV.c	
@@ -0,0 +1,34 @@
+/*
+
+Cylon eyes actually turns out to be a decent POV routine.
+The only change here is in DELAYTIME.
+
+ */
+
+
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#include <util/delay.h>                     /* Functions to waste time */
+
+#define DELAYTIME 2                                    /* milliseconds */
+
+int main(void) {
+  uint8_t i=0;
+  DDRB = 0b11111111;              /* Data Direction Register B: all on */
+
+  while (1) {
+
+    while (i < 7) {
+      PORTB = (1 << i);                    /* illuminate only i'th pin */
+      _delay_ms(DELAYTIME);                                    /* wait */
+      i = i + 1;                               /* move to the next LED */
+    }
+
+    while (i > 0) {
+      PORTB = (1 << i);                    /* illuminate only i'th pin */
+      _delay_ms(DELAYTIME);                                    /* wait */
+      i = i - 1;                           /* move to the previous LED */
+    }
+  }
+
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter03_Digital-Output/povToy_invaders/Makefile b/Make AVR Examples/Chapter03_Digital-Output/povToy_invaders/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter03_Digital-Output/povToy_invaders/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter03_Digital-Output/povToy_invaders/invaders.c b/Make AVR Examples/Chapter03_Digital-Output/povToy_invaders/invaders.c
new file mode 100644
index 0000000..99586a7
--- /dev/null
+++ b/Make AVR Examples/Chapter03_Digital-Output/povToy_invaders/invaders.c	
@@ -0,0 +1,70 @@
+/*
+  Space Invaders POV demo by Elliot Williams
+  This version stores the displays in arrays,
+  loops over their elements in a function.
+*/
+
+#include <avr/io.h>
+#include <util/delay.h>
+#define DELAYTIME 2                                              /* ms */
+
+#define LED_PORT                PORTB
+#define LED_DDR                 DDRB
+
+uint8_t invaderData1[] = {
+  0b01110000,
+  0b00011000,
+  0b11111101,
+  0b10110110,
+  0b00111100,
+  0b00111100,
+  0b00111100,
+  0b10110110,
+  0b11111101,
+  0b00011000,
+  0b01110000
+};
+
+uint8_t invaderData2[] = {
+  0b00001110,
+  0b00011000,
+  0b10111101,
+  0b01110110,
+  0b00111100,
+  0b00111100,
+  0b00111100,
+  0b01110110,
+  0b10111101,
+  0b00011000,
+  0b00001110
+};
+
+
+void pause(void){
+	uint8_t i;
+	for (i=0; i<5; i++){
+		_delay_ms(DELAYTIME);
+	}
+}
+
+void POVDisplay(uint8_t povData[], uint8_t numberRows) {
+  uint8_t i;
+  for (i = 0; i < numberRows; ++i) {
+    LED_PORT = povData[i];
+    _delay_ms(DELAYTIME);
+  }
+  pause();
+}
+
+int main(void) {
+
+  LED_DDR = 0xff;                            /* set all LEDs to output */ 
+
+  while (1) {                                              /* mainloop */
+
+      POVDisplay(invaderData1, sizeof(invaderData1));
+      POVDisplay(invaderData2, sizeof(invaderData2));
+
+  }                                                    /* end mainloop */
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes/Makefile b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes/cylonEyes.c b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes/cylonEyes.c
new file mode 100644
index 0000000..d60f293
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes/cylonEyes.c	
@@ -0,0 +1,36 @@
+                                                         /* Cylon Eyes */
+
+// ------- Preamble -------- //
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#include <util/delay.h>                     /* Functions to waste time */
+
+#define DELAYTIME 85                                   /* milliseconds */
+#define LED_PORT                PORTB
+#define LED_PIN                 PINB
+#define LED_DDR                 DDRB
+
+int main(void) {
+
+  // -------- Inits --------- //
+  uint8_t i=0;
+  LED_DDR = 0xff;               /* Data Direction Register B:
+                                   all set up for output */
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    while (i < 7) {
+      LED_PORT = (1 << i);                 /* illuminate only i'th pin */
+      _delay_ms(DELAYTIME);                                    /* wait */
+      i = i + 1;                               /* move to the next LED */
+    }
+
+    while (i > 0) {
+      LED_PORT = (1 << i);                 /* illuminate only i'th pin */
+      _delay_ms(DELAYTIME);                                    /* wait */
+      i = i - 1;                           /* move to the previous LED */
+    }
+
+  }                                                  /* End event loop */
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_16LFSR/16LFSR.c b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_16LFSR/16LFSR.c
new file mode 100644
index 0000000..64b987a
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_16LFSR/16LFSR.c	
@@ -0,0 +1,71 @@
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+
+#define DELAY     100                                            /* ms */
+
+static inline uint8_t LFSR8_step(uint8_t random);
+static inline uint16_t LFSR16(uint16_t random);
+
+int main(void) {
+
+  // -------- Inits --------- //
+
+  DDRB = 0xff;                                   /* output on all LEDs */
+  uint16_t random = 123;           /* can't init to 0, any other is ok */
+
+  // ------ Event loop ------ //
+  while (1) {
+
+                                                 /* Display and output */
+    random = LFSR16(random);
+    PORTB = (random >> 8);
+    _delay_ms(DELAY);
+
+  }                                                  /* End event loop */
+  return 0;
+}
+
+
+// ----------------- LFSR Routines ---------------- //
+
+inline uint8_t LFSR8_step(uint8_t random) {
+  /*
+     Takes an 8-bit number, takes one step in a () LFSR.
+     [3, 4, 5, 7] is the set of taps for 8-bits that goes through
+     the whole cycle before repeating.
+
+     If you're really serious about randomness, you'll want a different
+     algorithm.  In fact, this is a great demo of how "predictable"
+     the "pseudo-random" sequence is.
+
+     Note that this is not a very efficient way to code this up,
+     but it's meant mostly for teaching and is plenty fast
+     because the compiler does an OK job with it.
+   */
+  uint8_t tap1, tap2, tap3, tap4;
+  uint8_t newBit;
+  tap1 = 1 & (random >> 3);
+  tap2 = 1 & (random >> 4);
+  tap3 = 1 & (random >> 5);
+  tap4 = 1 & (random >> 7);
+
+  newBit = tap1 ^ tap2 ^ tap3 ^ tap4;
+  random = ((random << 1) | newBit);
+  return (random);
+}
+
+
+inline uint16_t LFSR16(uint16_t random) {
+  // 3, 12, 14, 15 are the maximal taps for 16 bits.
+  uint16_t tap1, tap2, tap3, tap4;
+  uint16_t newBit;
+  tap1 = 1 & (random >> 3);
+  tap2 = 1 & (random >> 12);
+  tap3 = 1 & (random >> 14);
+  tap4 = 1 & (random >> 15);
+
+  newBit = tap1 ^ tap2 ^ tap3 ^ tap4;
+  random = ((random << 1) | newBit);
+  return (random);
+}
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_16LFSR/Makefile b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_16LFSR/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_16LFSR/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_8LFSR/8LFSR.c b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_8LFSR/8LFSR.c
new file mode 100644
index 0000000..aa33648
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_8LFSR/8LFSR.c	
@@ -0,0 +1,70 @@
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+
+#define DELAY     100                                            /* ms */
+
+static inline uint8_t LFSR8_step(uint8_t random);
+
+int main(void) {
+
+  // -------- Inits --------- //
+
+  DDRB = 0xff;                                   /* output on all LEDs */
+  uint8_t random = 1;              /* can't init to 0, any other is ok */
+
+  // ------ Event loop ------ //
+  while (1) {
+
+                                                 /* Display and output */
+    random = LFSR8_step(random);
+    PORTB = random;
+    _delay_ms(DELAY);
+
+  }                                                  /* End event loop */
+  return 0;
+}
+
+
+// ----------------- LFSR Routines ---------------- //
+
+inline uint8_t LFSR8_step(uint8_t random) {
+  /*
+     Takes an 8-bit number, takes one step in a () LFSR.
+     [3, 4, 5, 7] is the set of taps for 8-bits that goes through
+     the whole cycle before repeating.
+
+     If you're really serious about randomness, you'll want a different
+     algorithm.  In fact, this is a great demo of how "predictable"
+     the "pseudo-random" sequence is.
+
+     Note that this is not a very efficient way to code this up,
+     but it's meant mostly for teaching and is plenty fast
+     because the compiler does an OK job with it.
+   */
+  uint8_t tap1, tap2, tap3, tap4;
+  uint8_t newBit;
+  tap1 = 1 & (random >> 3);
+  tap2 = 1 & (random >> 4);
+  tap3 = 1 & (random >> 5);
+  tap4 = 1 & (random >> 7);
+
+  newBit = tap1 ^ tap2 ^ tap3 ^ tap4;
+  random = ((random << 1) | newBit);
+  return (random);
+}
+
+
+inline uint16_t LFSR16(uint16_t random) {
+  // 3, 12, 14, 15 are the maximal taps for 16 bits.
+  uint16_t tap1, tap2, tap3, tap4;
+  uint16_t newBit;
+  tap1 = 1 & (random >> 3);
+  tap2 = 1 & (random >> 12);
+  tap3 = 1 & (random >> 14);
+  tap4 = 1 & (random >> 15);
+
+  newBit = tap1 ^ tap2 ^ tap3 ^ tap4;
+  random = ((random << 1) | newBit);
+  return (random);
+}
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_8LFSR/Makefile b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_8LFSR/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_8LFSR/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_counting/Makefile b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_counting/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_counting/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_counting/counting.c b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_counting/counting.c
new file mode 100644
index 0000000..018fe6c
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_counting/counting.c	
@@ -0,0 +1,15 @@
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#define F_CPU 1000000UL          /* Sets up the chip speed for delay.h */
+#include <util/delay.h>                     /* Functions to waste time */
+
+#define DELAYTIME 100
+
+int main(void) {
+  DDRB = 0b11111111;
+  PORTB = 0;
+
+  while (1) {
+    PORTB = PORTB + 1;
+    _delay_ms(DELAYTIME);
+  }
+}
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_halfStepping/Makefile b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_halfStepping/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_halfStepping/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_halfStepping/cylonEyes_halfStepping.c b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_halfStepping/cylonEyes_halfStepping.c
new file mode 100644
index 0000000..c1418ee
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_halfStepping/cylonEyes_halfStepping.c	
@@ -0,0 +1,45 @@
+/* Cylon Eyes
+   Half-stepping turns the next light on for a little bit,
+   makes the pattern visually smoother, improves overall
+   cylonity.
+*/
+
+// ------- Preamble -------- //
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#include <util/delay.h>                     /* Functions to waste time */
+
+#define DELAYTIME 85    /* milliseconds, 50-75 is good for smooth eyes */
+
+int main(void) {
+
+  // -------- Inits --------- //
+  uint8_t i;
+  DDRB = 0xff;                  /* Data Direction Register B:
+                                   all set up for output */
+
+  // ------ Event loop ------ //
+  while (1) {                                              /* mainloop */
+
+    for (i = 0; i < 7; i++) {                   /* count i from 0 to 6 */
+      PORTB |= (1 << i);                              /* turn on led i */
+      _delay_ms(DELAYTIME);                                    /* wait */
+
+      PORTB |= (1 << (i + 1));                 /* turn the next led on */
+      _delay_ms(DELAYTIME / 2);
+
+      PORTB &= ~(1 << i);                            /* turn off led i */
+    }
+
+    for (i = 7; i > 0; i--) {                   /* count i from 7 to 1 */
+      PORTB |= (1 << i);
+      _delay_ms(DELAYTIME);
+
+      PORTB |= (1 << (i - 1));                 /* turn the next led on */
+      _delay_ms(DELAYTIME / 2);
+
+      PORTB &= ~(1 << i);                            /* turn off led i */
+    }
+
+  }                                                  /* End event loop */
+  return 0;
+}                                                          /* end main */
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_naive/Makefile b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_naive/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_naive/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_naive/cylonEyes_naive.c b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_naive/cylonEyes_naive.c
new file mode 100644
index 0000000..434fa93
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_naive/cylonEyes_naive.c	
@@ -0,0 +1,42 @@
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#define F_CPU 1000000UL          /* Sets up the chip speed for delay.h */
+#include <util/delay.h>                     /* Functions to waste time */
+
+#define DELAYTIME 75                                   /* milliseconds */
+
+int main(void) {
+
+  DDRB = 0b11111111;           /* Data Direction Register B:
+                                   all set up for output */
+
+  while (1) {
+    PORTB = 0b00000001;
+    _delay_ms(DELAYTIME);
+    PORTB = 0b00000010;
+    _delay_ms(DELAYTIME);
+    PORTB = 0b00000100;
+    _delay_ms(DELAYTIME);
+    PORTB = 0b00001000;
+    _delay_ms(DELAYTIME);
+    PORTB = 0b00010000;
+    _delay_ms(DELAYTIME);
+    PORTB = 0b00100000;
+    _delay_ms(DELAYTIME);
+    PORTB = 0b01000000;
+    _delay_ms(DELAYTIME);
+    PORTB = 0b10000000;
+    _delay_ms(DELAYTIME);
+    PORTB = 0b01000000;
+    _delay_ms(DELAYTIME);
+    PORTB = 0b00100000;
+    _delay_ms(DELAYTIME);
+    PORTB = 0b00010000;
+    _delay_ms(DELAYTIME);
+    PORTB = 0b00001000;
+    _delay_ms(DELAYTIME);
+    PORTB = 0b00000100;
+    _delay_ms(DELAYTIME);
+    PORTB = 0b00000010;
+    _delay_ms(DELAYTIME);
+  }
+}
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_quasiRandomToggle/Makefile b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_quasiRandomToggle/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_quasiRandomToggle/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_quasiRandomToggle/quasiRandomToggle.c b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_quasiRandomToggle/quasiRandomToggle.c
new file mode 100644
index 0000000..2b0ff82
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/cylonEyes_quasiRandomToggle/quasiRandomToggle.c	
@@ -0,0 +1,30 @@
+                                                         /* Cylon Eyes */
+
+// ------- Preamble -------- //
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#include <util/delay.h>                     /* Functions to waste time */
+
+#define DELAYTIME 45                                   /* milliseconds */
+#define LED_PORT                PORTB
+#define LED_PIN                 PINB
+#define LED_DDR                 DDRB
+
+int main(void) {
+
+  // -------- Inits --------- //
+  uint16_t x = 0x1234;
+  uint8_t y;
+  LED_DDR = 0xff;               /* Data Direction Register B:
+                                   all set up for output */
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    x = 2053 * x + 13849;                 /* "random" number generator */
+    y = (x >> 8) & 0b00000111;       /* pick three bits from high byte */
+    LED_PORT ^= (1 << y);                            /* toggle one bit */
+    _delay_ms(100);
+
+  }                                                  /* End event loop */
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/showingOffBits/Makefile b/Make AVR Examples/Chapter04_Bit-Twiddling/showingOffBits/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/showingOffBits/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter04_Bit-Twiddling/showingOffBits/showingOffBits.c b/Make AVR Examples/Chapter04_Bit-Twiddling/showingOffBits/showingOffBits.c
new file mode 100644
index 0000000..2c1a7ca
--- /dev/null
+++ b/Make AVR Examples/Chapter04_Bit-Twiddling/showingOffBits/showingOffBits.c	
@@ -0,0 +1,59 @@
+            /* Showing off some patterns to practice our bit-twiddling */
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <avr/power.h>
+#include <util/delay.h>                     /* Functions to waste time */
+
+#define DELAYTIME 85                                   /* milliseconds */
+#define LED_PORT                PORTB
+#define LED_DDR                 DDRB
+
+int main(void) {
+
+  uint8_t i;
+  uint8_t repetitions;
+  uint8_t whichLED;
+  uint16_t randomNumber = 0x1234;
+
+  // -------- Inits --------- //
+  LED_DDR = 0xff;                    /* all LEDs configured for output */
+  // ------ Event loop ------ //
+  while (1) {
+                                                            /* Go Left */
+    for (i = 0; i < 8; i++) {
+      LED_PORT |= (1 << i);                    /* turn on the i'th pin */
+      _delay_ms(DELAYTIME);                                    /* wait */
+    }
+    for (i = 0; i < 8; i++) {
+      LED_PORT &= ~(1 << i);                  /* turn off the i'th pin */
+      _delay_ms(DELAYTIME);                                    /* wait */
+    }
+    _delay_ms(5 * DELAYTIME);                                 /* pause */
+
+                                                           /* Go Right */
+    for (i = 7; i < 255; i--) {
+      LED_PORT |= (1 << i);                    /* turn on the i'th pin */
+      _delay_ms(DELAYTIME);                                    /* wait */
+    }
+    for (i = 7; i < 255; i--) {
+      LED_PORT &= ~(1 << i);                  /* turn off the i'th pin */
+      _delay_ms(DELAYTIME);                                    /* wait */
+    }
+    _delay_ms(5 * DELAYTIME);                                 /* pause */
+
+                                   /* Toggle "random" bits for a while */
+    for (repetitions = 0; repetitions < 75; repetitions++) {
+                                          /* "random" number generator */
+      randomNumber = 2053 * randomNumber + 13849;
+                                      /* low three bits from high byte */
+      whichLED = (randomNumber >> 8) & 0b00000111;
+      LED_PORT ^= (1 << whichLED);                   /* toggle our LED */
+      _delay_ms(DELAYTIME);
+    }
+    LED_PORT = 0;                                      /* all LEDs off */
+    _delay_ms(5 * DELAYTIME);                                 /* pause */
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter05_Serial-IO/serialLoopback/Makefile b/Make AVR Examples/Chapter05_Serial-IO/serialLoopback/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter05_Serial-IO/serialLoopback/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter05_Serial-IO/serialLoopback/serialLoopback.c b/Make AVR Examples/Chapter05_Serial-IO/serialLoopback/serialLoopback.c
new file mode 100644
index 0000000..014cd96
--- /dev/null
+++ b/Make AVR Examples/Chapter05_Serial-IO/serialLoopback/serialLoopback.c	
@@ -0,0 +1,31 @@
+/*
+A simple test of serial-port functionality.
+Takes in a character at a time and sends it right back out,
+ displaying the ASCII value on the LEDs.
+*/
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include "pinDefines.h"
+#include "USART.h"
+
+int main(void) {
+  char serialCharacter;
+
+  // -------- Inits --------- //
+  LED_DDR = 0xff;                            /* set up LEDs for output */
+  initUSART();
+  printString("Hello World!\r\n");                          /* to test */
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    serialCharacter = receiveByte();
+    transmitByte(serialCharacter);
+    LED_PORT = serialCharacter;
+                           /* display ascii/numeric value of character */
+
+  }                                                  /* End event loop */
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/Makefile b/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/autoPlay.py b/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/autoPlay.py
new file mode 100644
index 0000000..8b0cadd
--- /dev/null
+++ b/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/autoPlay.py	
@@ -0,0 +1,50 @@
+## Scripting in python to drive the serial-port organ
+
+## So far, the "protocol" is simple.  
+## Python routine sends a note, waits for a return character, then sends next, etc.
+## Organ listens for notes, when it gets one sends an 'N' to say it's ready
+ 
+import serial
+
+def playString(noteString, serialPort):
+  for letter in noteString:
+    print(letter)
+    serialPort.write(letter.encode())
+    returnValue = serialPort.read(1)
+    
+if __name__ == "__main__":
+
+  import time
+  from urllib.request import urlopen
+
+  ## Need to consider alternatives for Mac / Windows
+  ## list all serial ports being used: python -m serial.tools.list_ports
+  PORT = "/dev/ttyUSB0" # Change this to the current serial port being used
+  BAUD = 9600
+
+  s = serial.Serial(PORT, BAUD)
+  s.flush()                     
+  ## flush clears the buffer so that we're starting fresh
+  ## More on serial buffers later.
+
+  ## An intentional example.  You can use this for playing music on purpose.
+  playString("f g h j k l ; ]'[", s)
+  input("Press enter for next demo\n")
+
+  ## A fun / stupid example.  You can just type stuff and see what comes out.
+  playString("hello there, this is a random string turned into 'music'", s)
+  input("Press enter for next demo\n")
+
+  ## Website no longer alive... skipping:
+  ## A really frivolous example.  Play websites!
+  ## Bonus points for first person to tweet themselves a song.
+  #print ("Downloading song data from http://serialorgansongs.jottit.com/...")
+  #import re
+  #contentFilter = re.compile(r'<p>(.*?)</p>')
+  #songSite = urlopen("http://serialorgansongs.jottit.com/").read()
+  #songText = contentFilter.findall(songSite)[0]
+  #playString(songText, s)
+ 
+  ## Or interactive
+  mySong = input("\nType in your own song: ")
+  playString(mySong, s)
diff --git a/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/organ.c b/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/organ.c
new file mode 100644
index 0000000..6041a5a
--- /dev/null
+++ b/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/organ.c	
@@ -0,0 +1,26 @@
+/*
+Simple routines to play notes out to a speaker
+*/
+
+#include <avr/io.h>
+#include <util/delay.h>
+#include "organ.h"
+#include "pinDefines.h"
+
+void playNote(uint16_t period, uint16_t duration) {
+  uint16_t elapsed;
+  uint16_t i;
+  for (elapsed = 0; elapsed < duration; elapsed += period) {
+                     /* For loop with variable delay selects the pitch */
+    for (i = 0; i < period; i++) {
+      _delay_us(1);
+    }
+    SPEAKER_PORT ^= (1 << SPEAKER);
+  }
+}
+
+void rest(uint16_t duration) {
+  do {
+    _delay_us(1);
+  } while (--duration);
+}
diff --git a/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/organ.h b/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/organ.h
new file mode 100644
index 0000000..a9c853d
--- /dev/null
+++ b/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/organ.h	
@@ -0,0 +1,9 @@
+
+// ------------- Function prototypes -------------- //
+
+// Plays a note for the given duration.  None of these times are
+//  calibrated to actual notes or tempi.  It's all relative to TIMEBASE.
+void playNote(uint16_t period, uint16_t duration);
+
+// Does nothing for a time equal to the passed duration.
+void rest(uint16_t duration);
diff --git a/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/scale16.h b/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/scale16.h
new file mode 100644
index 0000000..e317746
--- /dev/null
+++ b/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/scale16.h	
@@ -0,0 +1,99 @@
+// Scale in the key of 25000
+// Automatically generated by scaleGenerator.py
+
+#define  C0    25000
+#define  Cx0   23597
+#define  D0    22272
+#define  Dx0   21022
+#define  E0    19843
+#define  F0    18729
+#define  Fx0   17678
+#define  G0    16685
+#define  Gx0   15749
+#define  A0    14865
+#define  Ax0   14031
+#define  B0    13243
+#define  C1    12500
+#define  Cx1   11798
+#define  D1    11136
+#define  Dx1   10511
+#define  E1     9921
+#define  F1     9364
+#define  Fx1    8839
+#define  G1     8343
+#define  Gx1    7875
+#define  A1     7433
+#define  Ax1    7015
+#define  B1     6622
+#define  C2     6250
+#define  Cx2    5899
+#define  D2     5568
+#define  Dx2    5256
+#define  E2     4961
+#define  F2     4682
+#define  Fx2    4419
+#define  G2     4171
+#define  Gx2    3937
+#define  A2     3716
+#define  Ax2    3508
+#define  B2     3311
+#define  C3     3125
+#define  Cx3    2950
+#define  D3     2784
+#define  Dx3    2628
+#define  E3     2480
+#define  F3     2341
+#define  Fx3    2210
+#define  G3     2086
+#define  Gx3    1969
+#define  A3     1858
+#define  Ax3    1754
+#define  B3     1655
+#define  C4     1562
+#define  Cx4    1474
+#define  D4     1392
+#define  Dx4    1313
+#define  E4     1240
+#define  F4     1170
+#define  Fx4    1105
+#define  G4     1043
+#define  Gx4     984
+#define  A4      929
+#define  Ax4     877
+#define  B4      827
+#define  C5      781
+#define  Cx5     737
+#define  D5      696
+#define  Dx5     657
+#define  E5      620
+#define  F5      585
+#define  Fx5     552
+#define  G5      521
+#define  Gx5     492
+#define  A5      464
+#define  Ax5     438
+#define  B5      414
+#define  C6      390
+#define  Cx6     368
+#define  D6      347
+#define  Dx6     328
+#define  E6      310
+#define  F6      292
+#define  Fx6     276
+#define  G6      260
+#define  Gx6     246
+#define  A6      232
+#define  Ax6     219
+#define  B6      207
+#define  C7      195
+#define  Cx7     184
+#define  D7      174
+#define  Dx7     164
+#define  E7      155
+#define  F7      146
+#define  Fx7     138
+#define  G7      130
+#define  Gx7     123
+#define  A7      116
+#define  Ax7     109
+#define  B7      103
diff --git a/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/scaleGenerator.py b/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/scaleGenerator.py
new file mode 100644
index 0000000..f72a4da
--- /dev/null
+++ b/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/scaleGenerator.py	
@@ -0,0 +1,46 @@
+# scaleGenerator.py
+# Scales are in terms of times per cycle (period) rather
+#   than pitch.  
+# 
+
+import math
+
+SCALE = ['C', 'Cx', 'D', 'Dx', 'E', 'F', 'Fx', 'G', 'Gx', 'A', 'Ax', 'B']
+
+def calculateOctave(baseLength):
+    periods = [baseLength / math.exp(x*math.log(2)/12) for x in range(0, 12)]
+    periods = [int(round(x)) for x in periods]
+    return( zip(SCALE, periods) )
+
+def makePitches(basePitch, numOctaves):
+    pitchList = []
+    for octave in range(0, numOctaves):
+        for note, period in calculateOctave(basePitch / 2**octave):
+            if period < 65500:
+                noteString = note + str(octave)
+                pitchList.append((noteString,period))
+    return(pitchList)            
+    
+def makeDefines(basePitch, numOctaves):
+    pitchList = makePitches(basePitch, numOctaves)
+    defineString = "// Scale in the key of {} \n".format(basePitch)
+    defineString += "// Automatically generated by scaleGenerator.py \n\n"
+    for (note, length) in pitchList:
+        defineString += "#define  {:<5}{:>6}\n".format(note, length)
+    return(defineString)
+
+if __name__ == "__main__":
+    
+    ## Change these if you like
+    BASEPITCH = 25000
+    OCTAVES   = 8
+    OUTFILE   = "scale16.h"
+    
+    ## Write it out to a file
+    out = open(OUTFILE, "w")
+    out.write(makeDefines(BASEPITCH, OCTAVES))
+    out.close()
+
+    
+
+
diff --git a/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/serialOrgan.c b/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/serialOrgan.c
new file mode 100644
index 0000000..5dcb3b5
--- /dev/null
+++ b/Make AVR Examples/Chapter05_Serial-IO/serialOrgan/serialOrgan.c	
@@ -0,0 +1,74 @@
+/*
+
+serialOrgan.c
+
+Reads a character in serial from the keyboard, plays a note.
+
+See organ.h for pin defines and other macros
+See organ.c (and include it in the Makefile) for playNote() and rest()
+
+*/
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include "organ.h"
+#include "scale16.h"
+#include "pinDefines.h"
+#include "USART.h"
+
+#define NOTE_DURATION     0xF000        /* determines long note length */
+
+int main(void) {
+
+  // -------- Inits --------- //
+  SPEAKER_DDR |= (1 << SPEAKER);                 /* speaker for output */
+  initUSART();
+  printString("----- Serial Organ ------\r\n");
+
+  char fromCompy;                        /* used to store serial input */
+  uint16_t currentNoteLength = NOTE_DURATION / 2;
+  const uint8_t keys[] = { 'a', 'w', 's', 'e', 'd', 'f', 't',
+    'g', 'y', 'h', 'j', 'i', 'k', 'o',
+    'l', 'p', ';', '\''
+  };
+  const uint16_t notes[] = { G4, Gx4, A4, Ax4, B4, C5, Cx5,
+    D5, Dx5, E5, F5, Fx5, G5, Gx5,
+    A5, Ax5, B5, C6
+  };
+  uint8_t isNote;
+  uint8_t i;
+
+  // ------ Event loop ------ //
+  while (1) {
+
+                                                            /* Get Key */
+    fromCompy = receiveByte();      /* waits here until there is input */
+    transmitByte('N');     /* alert computer we're ready for next note */
+
+                                                         /* Play Notes */
+    isNote = 0;
+    for (i = 0; i < sizeof(keys); i++) {
+      if (fromCompy == keys[i]) {       /* found match in lookup table */
+        playNote(notes[i], currentNoteLength);
+        isNote = 1;                  /* record that we've found a note */
+        break;                               /* drop out of for() loop */
+      }
+    }
+
+                      /* Handle non-note keys: tempo changes and rests */
+    if (!isNote) {
+      if (fromCompy == '[') {                   /* code for short note */
+        currentNoteLength = NOTE_DURATION / 2;
+      }
+      else if (fromCompy == ']') {               /* code for long note */
+        currentNoteLength = NOTE_DURATION;
+      }
+      else {                                /* unrecognized, just rest */
+        rest(currentNoteLength);
+      }
+    }
+
+  }                                                  /* End event loop */
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/Makefile b/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/avrMusicBox.c b/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/avrMusicBox.c
new file mode 100644
index 0000000..2e1886d
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/avrMusicBox.c	
@@ -0,0 +1,48 @@
+// Music Box Input Demo
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include "organ.h"
+#include "scale16.h"
+#include "pinDefines.h"
+
+#define SONG_LENGTH  (sizeof(song) / sizeof(uint16_t))
+
+int main(void) {
+  const uint16_t song[] = {
+    E6, E6, E6, C6, E6, G6, G5,
+    C6, G5, E5, A5, B5, Ax5, A5,
+    G5, E6, G6, A6, F6, G6, E6, C6, D6, B5,
+    C6, G5, E5, A5, B5, Ax5, A5,
+    G5, E6, G6, A6, F6, G6, E6, C6, D6, B5,
+                                                                /* etc */
+  };
+  /* starting at end b/c routine starts by incrementing and then playing
+     this makes the song start at the beginning after reboot */
+  uint8_t whichNote = SONG_LENGTH - 1;
+  uint8_t wasButtonPressed = 0;
+
+  // -------- Inits --------- //
+  SPEAKER_DDR |= (1 << SPEAKER);                 /* speaker for output */
+  BUTTON_PORT |= (1 << BUTTON);                    /* pullup on button */
+
+  // ------ Event loop ------ //
+  while (1) {
+    if (bit_is_clear(BUTTON_PIN, BUTTON)) {
+      if (!wasButtonPressed) {              /* if it's a new press ... */
+        whichNote++;                           /* advance to next note */
+                                         /* but don't run over the end */
+        if (whichNote == SONG_LENGTH) {
+          whichNote = 0;
+        }
+        wasButtonPressed = 1;
+      }
+      playNote(song[whichNote], 1600);
+    }
+    else {
+      wasButtonPressed = 0;
+    }
+  }                                                  /* End event loop */
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/organ.c b/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/organ.c
new file mode 100644
index 0000000..6041a5a
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/organ.c	
@@ -0,0 +1,26 @@
+/*
+Simple routines to play notes out to a speaker
+*/
+
+#include <avr/io.h>
+#include <util/delay.h>
+#include "organ.h"
+#include "pinDefines.h"
+
+void playNote(uint16_t period, uint16_t duration) {
+  uint16_t elapsed;
+  uint16_t i;
+  for (elapsed = 0; elapsed < duration; elapsed += period) {
+                     /* For loop with variable delay selects the pitch */
+    for (i = 0; i < period; i++) {
+      _delay_us(1);
+    }
+    SPEAKER_PORT ^= (1 << SPEAKER);
+  }
+}
+
+void rest(uint16_t duration) {
+  do {
+    _delay_us(1);
+  } while (--duration);
+}
diff --git a/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/organ.h b/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/organ.h
new file mode 100644
index 0000000..a9c853d
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/organ.h	
@@ -0,0 +1,9 @@
+
+// ------------- Function prototypes -------------- //
+
+// Plays a note for the given duration.  None of these times are
+//  calibrated to actual notes or tempi.  It's all relative to TIMEBASE.
+void playNote(uint16_t period, uint16_t duration);
+
+// Does nothing for a time equal to the passed duration.
+void rest(uint16_t duration);
diff --git a/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/scale16.h b/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/scale16.h
new file mode 100644
index 0000000..c71928b
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/scale16.h	
@@ -0,0 +1,99 @@
+// Scale in the key of 12000
+// Automatically generated by scaleGenerator.py
+
+#define  C0    12000
+#define  Cx0   11326
+#define  D0    10691
+#define  Dx0   10091
+#define  E0     9524
+#define  F0     8990
+#define  Fx0    8485
+#define  G0     8009
+#define  Gx0    7560
+#define  A0     7135
+#define  Ax0    6735
+#define  B0     6357
+#define  C1     6000
+#define  Cx1    5663
+#define  D1     5345
+#define  Dx1    5045
+#define  E1     4762
+#define  F1     4495
+#define  Fx1    4243
+#define  G1     4005
+#define  Gx1    3780
+#define  A1     3568
+#define  Ax1    3367
+#define  B1     3178
+#define  C2     3000
+#define  Cx2    2832
+#define  D2     2673
+#define  Dx2    2523
+#define  E2     2381
+#define  F2     2247
+#define  Fx2    2121
+#define  G2     2002
+#define  Gx2    1890
+#define  A2     1784
+#define  Ax2    1684
+#define  B2     1589
+#define  C3     1500
+#define  Cx3    1416
+#define  D3     1336
+#define  Dx3    1261
+#define  E3     1191
+#define  F3     1124
+#define  Fx3    1061
+#define  G3     1001
+#define  Gx3     945
+#define  A3      892
+#define  Ax3     842
+#define  B3      795
+#define  C4      750
+#define  Cx4     708
+#define  D4      668
+#define  Dx4     631
+#define  E4      595
+#define  F4      562
+#define  Fx4     530
+#define  G4      501
+#define  Gx4     472
+#define  A4      446
+#define  Ax4     421
+#define  B4      397
+#define  C5      375
+#define  Cx5     354
+#define  D5      334
+#define  Dx5     315
+#define  E5      298
+#define  F5      281
+#define  Fx5     265
+#define  G5      250
+#define  Gx5     236
+#define  A5      223
+#define  Ax5     210
+#define  B5      199
+#define  C6      187
+#define  Cx6     177
+#define  D6      167
+#define  Dx6     157
+#define  E6      148
+#define  F6      140
+#define  Fx6     132
+#define  G6      125
+#define  Gx6     118
+#define  A6      111
+#define  Ax6     105
+#define  B6       99
+#define  C7       93
+#define  Cx7      88
+#define  D7       83
+#define  Dx7      78
+#define  E7       74
+#define  F7       70
+#define  Fx7      66
+#define  G7       62
+#define  Gx7      59
+#define  A7       55
+#define  Ax7      52
+#define  B7       49
diff --git a/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/scaleGenerator.py b/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/scaleGenerator.py
new file mode 100644
index 0000000..d4bd0cc
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/avrMusicBox/scaleGenerator.py	
@@ -0,0 +1,46 @@
+# scaleGenerator.py
+# Scales are in terms of times per cycle (period) rather
+#   than pitch.  
+# 
+
+import math
+
+SCALE = ['C', 'Cx', 'D', 'Dx', 'E', 'F', 'Fx', 'G', 'Gx', 'A', 'Ax', 'B']
+
+def calculateOctave(baseLength):
+    periods = [baseLength / math.exp(x*math.log(2)/12) for x in range(0, 12)]
+    periods = [int(round(x)) for x in periods]
+    return( zip(SCALE, periods) )
+
+def makePitches(basePitch, numOctaves):
+    pitchList = []
+    for octave in range(0, numOctaves):
+        for note, period in calculateOctave(basePitch / 2**octave):
+            if period < 65500:
+                noteString = note + str(octave)
+                pitchList.append((noteString,period))
+    return(pitchList)            
+    
+def makeDefines(basePitch, numOctaves):
+    pitchList = makePitches(basePitch, numOctaves)
+    defineString = "// Scale in the key of {} \n".format(basePitch)
+    defineString += "// Automatically generated by scaleGenerator.py \n\n"
+    for (note, length) in pitchList:
+        defineString += "#define  {:<5}{:>6}\n".format(note, length)
+    return(defineString)
+
+if __name__ == "__main__":
+    
+    ## Change these if you like
+    BASEPITCH = 10000
+    OCTAVES   = 8
+    OUTFILE   = "scale16.h"
+    
+    ## Write it out to a file
+    out = open(OUTFILE, "w")
+    out.write(makeDefines(BASEPITCH, OCTAVES))
+    out.close()
+
+    
+
+
diff --git a/Make AVR Examples/Chapter06_Digital-Input/bossButton/Makefile b/Make AVR Examples/Chapter06_Digital-Input/bossButton/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/bossButton/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter06_Digital-Input/bossButton/bossButton.c b/Make AVR Examples/Chapter06_Digital-Input/bossButton/bossButton.c
new file mode 100644
index 0000000..654e9fb
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/bossButton/bossButton.c	
@@ -0,0 +1,46 @@
+/*
+bossButton.c
+
+As long as we've got a button wired up to the AVR,
+might as well have some fun.
+
+Upload this code to your AVR, run bossButton.py.
+Press button.
+
+*/
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include "pinDefines.h"
+#include "USART.h"
+
+static inline void blinkLED(void) {
+  LED_PORT = (1 << LED0);
+  _delay_ms(1000);
+  LED_PORT &= ~(1 << LED0);
+}
+
+
+int main(void) {
+
+  // -------- Inits --------- //
+  BUTTON_PORT |= (1 << BUTTON);          /* input mode, turn on pullup */
+
+  LED_DDR = (1 << LED0);
+  blinkLED();
+
+  initUSART();
+  transmitByte('O');
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    if (bit_is_clear(BUTTON_PIN, BUTTON)) {
+      transmitByte('X');
+      blinkLED();
+    }
+
+  }                                                  /* End event loop */
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter06_Digital-Input/bossButton/bossButton.py b/Make AVR Examples/Chapter06_Digital-Input/bossButton/bossButton.py
new file mode 100644
index 0000000..c33409a
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/bossButton/bossButton.py	
@@ -0,0 +1,31 @@
+## Simple demo
+## Sits forever listening to serial port
+## When you press button, opens website of your choosing.
+## Extend this to many buttons and you'll have a physical
+##  web-launcher.  
+
+BOSS_SITE = "http://www.cartalk.com/content/boss-redirect"
+## or perhaps more topical...
+XKCD = "http://xkcd.com/353/"
+
+SERIAL_PORT = "/dev/ttyUSB0"
+BAUD_RATE = 9600
+
+import serial
+import webbrowser
+
+sp = serial.Serial(SERIAL_PORT, BAUD_RATE, timeout = 5)
+sp.flush()
+print ("Boss Button")
+
+while(1):                       # Sit and wait forever
+    response = sp.read(1)       # get one byte
+    if response == "O":
+        print ("Got OK Byte.  Waiting for button press.")
+    elif response == b"X":
+        print ("Got Boss Byte!  Alarm!")
+        webbrowser.open(BOSS_SITE)
+    else:
+        print ("Got nothing.  Still waiting.")
+
+
diff --git a/Make AVR Examples/Chapter06_Digital-Input/debouncer/Makefile b/Make AVR Examples/Chapter06_Digital-Input/debouncer/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/debouncer/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter06_Digital-Input/debouncer/debouncer.c b/Make AVR Examples/Chapter06_Digital-Input/debouncer/debouncer.c
new file mode 100644
index 0000000..a03a9fa
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/debouncer/debouncer.c	
@@ -0,0 +1,40 @@
+
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include "pinDefines.h"
+
+#include <util/delay.h>
+#define DEBOUNCE_TIME  1000                            /* microseconds */
+
+uint8_t debounce(void) {
+  if (bit_is_clear(BUTTON_PIN, BUTTON)) {      /* button is pressed now */
+    _delay_us(DEBOUNCE_TIME);
+    if (bit_is_clear(BUTTON_PIN, BUTTON)) {            /* still pressed */
+      return (1);
+    }
+  }
+  return 0;
+}
+
+int main(void) {
+  // -------- Inits --------- //
+  uint8_t buttonWasPressed=0;                                 /* state */
+  BUTTON_PORT |= (1 << BUTTON);     /* enable the pullup on the button */
+  LED_DDR = (1 << LED0);                      /* set up LED for output */
+
+  // ------ Event loop ------ //
+  while (1) {
+    if (debounce()) {                        /* debounced button press */
+      if (buttonWasPressed == 0) {     /* but wasn't last time through */
+        LED_PORT ^= (1 << LED0);                        /* do whatever */
+        buttonWasPressed = 1;                      /* update the state */
+      }
+    }
+    else {                                /* button is not pressed now */
+      buttonWasPressed = 0;                        /* update the state */
+    }
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter06_Digital-Input/simpleButton/Makefile b/Make AVR Examples/Chapter06_Digital-Input/simpleButton/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/simpleButton/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter06_Digital-Input/simpleButton/simpleButton.c b/Make AVR Examples/Chapter06_Digital-Input/simpleButton/simpleButton.c
new file mode 100644
index 0000000..aecbffe
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/simpleButton/simpleButton.c	
@@ -0,0 +1,27 @@
+/*
+   Demo of the simplest on/off button code
+   Button connected to PD2
+   LEDs connected to PB0..PB7
+*/
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+
+int main(void) {
+  // -------- Inits --------- //
+  PORTD |= (1 << PD2);  /* initialize pullup resistor on our input pin */
+  DDRB = 0xff;                           /* set up all LEDs for output */
+
+  // ------ Event loop ------ //
+  while (1) {
+    if (bit_is_clear(PIND, PD2)) {            /* look for button press */
+                      /* equivalent to if ((PIND & (1 << PD2)) == 0 ){ */
+      PORTB = 0b00111100;                                   /* pressed */
+    }
+    else {                                              /* not pressed */
+      PORTB = 0b11000011;
+    }
+  }                                                  /* End event loop */
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter06_Digital-Input/toggleButton/Makefile b/Make AVR Examples/Chapter06_Digital-Input/toggleButton/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/toggleButton/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter06_Digital-Input/toggleButton/toggleButton.c b/Make AVR Examples/Chapter06_Digital-Input/toggleButton/toggleButton.c
new file mode 100644
index 0000000..b9dbcd5
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/toggleButton/toggleButton.c	
@@ -0,0 +1,28 @@
+/*
+   Demonstrates using state to detect button presses
+*/
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include "pinDefines.h"
+
+int main(void) {
+  // -------- Inits --------- //
+  uint8_t buttonWasPressed;                                   /* state */
+  BUTTON_PORT |= (1 << BUTTON);     /* enable the pullup on the button */
+  LED_DDR = (1 << LED0);                      /* set up LED for output */
+
+  // ------ Event loop ------ //
+  while (1) {
+    if (bit_is_clear(BUTTON_PIN, BUTTON)) {    /* button is pressed now */
+      if (buttonWasPressed == 0) {     /* but wasn't last time through */
+        LED_PORT ^= (1 << LED0);                        /* do whatever */
+        buttonWasPressed = 1;                      /* update the state */
+      }
+    }
+    else {                                /* button is not pressed now */
+      buttonWasPressed = 0;                        /* update the state */
+    }
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter06_Digital-Input/toggleButton_debounced/Makefile b/Make AVR Examples/Chapter06_Digital-Input/toggleButton_debounced/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/toggleButton_debounced/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter06_Digital-Input/toggleButton_debounced/toggleButton_debounced.c b/Make AVR Examples/Chapter06_Digital-Input/toggleButton_debounced/toggleButton_debounced.c
new file mode 100644
index 0000000..d1b3d99
--- /dev/null
+++ b/Make AVR Examples/Chapter06_Digital-Input/toggleButton_debounced/toggleButton_debounced.c	
@@ -0,0 +1,42 @@
+/*
+   Demonstrates using state to detect button presses
+*/
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include "pinDefines.h"
+
+#include <util/delay.h>
+#define DEBOUNCE_TIME  5                               /* microseconds */
+
+uint8_t debouncePress(void) {
+  if (bit_is_clear(BUTTON_PIN, BUTTON)) {      /* button is pressed now */
+    _delay_ms(DEBOUNCE_TIME);
+    if (bit_is_clear(BUTTON_PIN, BUTTON)) {            /* still pressed */
+      return (1);
+    }
+  }
+  return 0;
+}
+
+int main(void) {
+  // -------- Inits --------- //
+  uint8_t buttonWasPressed=0;                                 /* state */
+  BUTTON_PORT |= (1 << BUTTON);     /* enable the pullup on the button */
+  LED_DDR = (1 << LED0);                      /* set up LED for output */
+
+  // ------ Event loop ------ //
+  while (1) {
+    if (debouncePress()) {
+      if (buttonWasPressed == 0) {     /* but wasn't last time through */
+        LED_PORT ^= (1 << LED0);                        /* do whatever */
+        buttonWasPressed = 1;                      /* update the state */
+      }
+    }
+    else {                                /* button is not pressed now */
+      buttonWasPressed = 0;                        /* update the state */
+    }
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/lightSensor/.gitignore b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/lightSensor/.gitignore
new file mode 100644
index 0000000..33cb8f6
--- /dev/null
+++ b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/lightSensor/.gitignore	
@@ -0,0 +1 @@
+lightSensor_50Hz.c
diff --git a/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/lightSensor/Makefile b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/lightSensor/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/lightSensor/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/lightSensor/lightSensor.c b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/lightSensor/lightSensor.c
new file mode 100644
index 0000000..6136b1e
--- /dev/null
+++ b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/lightSensor/lightSensor.c	
@@ -0,0 +1,41 @@
+// Quick Demo of light sensor
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include "pinDefines.h"
+
+// -------- Functions --------- //
+static inline void initADC0(void) {
+  ADMUX |= (1 << REFS0);                  /* reference voltage on AVCC */
+  ADCSRA |= (1 << ADPS2);                   /* ADC clock prescaler /16 */
+  ADCSRA |= (1 << ADEN);                                 /* enable ADC */
+}
+
+int main(void) {
+
+  // -------- Inits --------- //
+  uint8_t ledValue;
+  uint16_t adcValue;
+  uint8_t i;
+
+  initADC0();
+  LED_DDR = 0xff;
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    ADCSRA |= (1 << ADSC);                     /* start ADC conversion */
+    loop_until_bit_is_clear(ADCSRA, ADSC);          /* wait until done */
+    adcValue = ADC;                                     /* read ADC in */
+                        /* Have 10 bits, want 3 (eight LEDs after all) */
+    ledValue = (adcValue >> 7);
+                                   /* Light up all LEDs up to ledValue */
+    LED_PORT = 0;
+    for (i = 0; i <= ledValue; i++) {
+      LED_PORT |= (1 << i);
+    }
+    _delay_ms(50);
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/nightLight/Makefile b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/nightLight/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/nightLight/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/nightLight/nightLight.c b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/nightLight/nightLight.c
new file mode 100644
index 0000000..d20f3b6
--- /dev/null
+++ b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/nightLight/nightLight.c	
@@ -0,0 +1,39 @@
+// Quick and dirty adjustable-threshold night-light.
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include "pinDefines.h"
+
+uint16_t readADC(uint8_t channel) {
+  ADMUX = (0xf0 & ADMUX) | channel;
+  ADCSRA |= (1 << ADSC);
+  loop_until_bit_is_clear(ADCSRA, ADSC);
+  return (ADC);
+}
+
+int main(void) {
+  // -------- Inits --------- //
+  uint16_t lightThreshold;
+  uint16_t sensorValue;
+  // Set up ADC
+  ADMUX |= (1 << REFS0);                  /* reference voltage on AVCC */
+  ADCSRA |= (1 << ADPS1) | (1 << ADPS0);     /* ADC clock prescaler /8 */
+  ADCSRA |= (1 << ADEN);                                 /* enable ADC */
+
+  LED_DDR = 0xff;
+  // ------ Event loop ------ //
+  while (1) {
+
+    lightThreshold = readADC(POT);
+    sensorValue = readADC(LIGHT_SENSOR);
+
+    if (sensorValue < lightThreshold) {
+      LED_PORT = 0xff;
+    }
+    else {
+      LED_PORT = 0x00;
+    }
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/slowScope/Makefile b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/slowScope/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/slowScope/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/slowScope/serialScope.py b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/slowScope/serialScope.py
new file mode 100644
index 0000000..3f8828b
--- /dev/null
+++ b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/slowScope/serialScope.py	
@@ -0,0 +1,35 @@
+import serial
+
+def readValue(serialPort):
+    return(ord(serialPort.read(1)))
+
+def plotValue(value):
+    """ Displays the value on a scaled scrolling bargraph"""
+    leadingSpaces = "-" * int(value*(SCREEN_WIDTH-3) / 255)
+    print(f"{leadingSpaces} {value:03}")
+
+def cheapoScope(serialPort):
+    while(1):
+        newValue = readValue(serialPort)
+        plotValue(newValue)
+        
+
+if __name__ == "__main__":
+    ## list all serial ports being used: python -m serial.tools.list_ports
+    PORT = '/dev/ttyUSB0' # update to whatever port is listed in serial.tools.list_ports
+    BAUDRATE =  9600
+    TIMEOUT = None
+    SCREEN_WIDTH = 80
+
+    ## Take command-line arguments to override defaults above
+    import sys
+    if len(sys.argv) == 3:
+        port = sys.argv[1]
+        baudrate = int(sys.argv[2])
+    else:                        # nothing passed, use defaults 
+        print ("Optional arguments port, baudrate set to defaults.")
+        port, baudrate = (PORT, BAUDRATE)
+        
+    serialPort = serial.Serial(port, baudrate, timeout=TIMEOUT)
+    serialPort.flush()
+    cheapoScope(serialPort)
diff --git a/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/slowScope/slowScope.c b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/slowScope/slowScope.c
new file mode 100644
index 0000000..991892a
--- /dev/null
+++ b/Make AVR Examples/Chapter07_Analog-to-Digital-Conversion-I/slowScope/slowScope.c	
@@ -0,0 +1,33 @@
+// Slow-scope.  A free-running AVR / ADC "oscilloscope"
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include "pinDefines.h"
+#include "USART.h"
+
+#define SAMPLE_DELAY  20 /* ms, controls the scroll-speed of the scope */
+
+// -------- Functions --------- //
+static inline void initFreerunningADC(void) {
+  ADMUX |= (1 << REFS0);                  /* reference voltage on AVCC */
+  ADCSRA |= (1 << ADPS1) | (1 << ADPS0);    /* ADC clock prescaler /8 */
+
+  ADMUX |= (1 << ADLAR);     /* left-adjust result, return only 8 bits */
+
+  ADCSRA |= (1 << ADEN);                                 /* enable ADC */
+  ADCSRA |= (1 << ADATE);                       /* auto-trigger enable */
+  ADCSRA |= (1 << ADSC);                     /* start first conversion */
+}
+
+int main(void) {
+  // -------- Inits --------- //
+  initUSART();
+  initFreerunningADC();
+  // ------ Event loop ------ //
+  while (1) {
+    transmitByte(ADCH);       /* transmit the high byte, left-adjusted */
+    _delay_ms(SAMPLE_DELAY);
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter08_Hardware-Interrupts/capSense/Makefile b/Make AVR Examples/Chapter08_Hardware-Interrupts/capSense/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/Chapter08_Hardware-Interrupts/capSense/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter08_Hardware-Interrupts/capSense/capSense.c b/Make AVR Examples/Chapter08_Hardware-Interrupts/capSense/capSense.c
new file mode 100644
index 0000000..c90f657
--- /dev/null
+++ b/Make AVR Examples/Chapter08_Hardware-Interrupts/capSense/capSense.c	
@@ -0,0 +1,67 @@
+/*
+   Capacitive touch sensor demo
+*/
+
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+#include <avr/power.h>
+#include "pinDefines.h"
+#include "USART.h"
+
+#define SENSE_TIME   50
+#define THRESHOLD    12000
+
+// -------  Global Variables ---------- //
+volatile uint16_t chargeCycleCount;
+
+// ------- Functions -------- //
+
+void initPinChangeInterrupt(void) {
+  PCICR |= (1 << PCIE1);    /* enable Pin-change interrupts 1 (bank C) */
+  PCMSK1 |= (1 << PC1);   /* enable specific interrupt for our pin PC1 */
+}
+
+ISR(PCINT1_vect) {
+  chargeCycleCount++;                             /* count this change */
+
+  CAP_SENSOR_DDR |= (1 << CAP_SENSOR);                  /* output mode */
+  _delay_us(1);                                      /* charging delay */
+
+  CAP_SENSOR_DDR &= ~(1 << CAP_SENSOR);                /* set as input */
+  PCIFR |= (1 << PCIF1);             /* clear the pin-change interrupt */
+}
+
+
+int main(void) {
+  // -------- Inits --------- //
+  clock_prescale_set(clock_div_1);                       /* full speed */
+  initUSART();
+  printString("==[ Cap Sensor ]==\r\n\r\n");
+
+  LED_DDR = 0xff;
+  MCUCR |= (1 << PUD);                          /* disable all pullups */
+  CAP_SENSOR_PORT |= (1 << CAP_SENSOR);    /* we can leave output high */
+
+  initPinChangeInterrupt();
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    chargeCycleCount = 0;                             /* reset counter */
+    CAP_SENSOR_DDR |= (1 << CAP_SENSOR);     /* start with cap charged */
+    sei();                            /* start up interrupts, counting */
+    _delay_ms(SENSE_TIME);
+    cli();                                                     /* done */
+    if (chargeCycleCount < THRESHOLD) {
+      LED_PORT = 0xff;
+    }
+    else {
+      LED_PORT = 0;
+    }
+    printWord(chargeCycleCount);                    /* for fine tuning */
+    printString("\r\n");
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter08_Hardware-Interrupts/capSense/serialScope.py b/Make AVR Examples/Chapter08_Hardware-Interrupts/capSense/serialScope.py
new file mode 100644
index 0000000..3f8828b
--- /dev/null
+++ b/Make AVR Examples/Chapter08_Hardware-Interrupts/capSense/serialScope.py	
@@ -0,0 +1,35 @@
+import serial
+
+def readValue(serialPort):
+    return(ord(serialPort.read(1)))
+
+def plotValue(value):
+    """ Displays the value on a scaled scrolling bargraph"""
+    leadingSpaces = "-" * int(value*(SCREEN_WIDTH-3) / 255)
+    print(f"{leadingSpaces} {value:03}")
+
+def cheapoScope(serialPort):
+    while(1):
+        newValue = readValue(serialPort)
+        plotValue(newValue)
+        
+
+if __name__ == "__main__":
+    ## list all serial ports being used: python -m serial.tools.list_ports
+    PORT = '/dev/ttyUSB0' # update to whatever port is listed in serial.tools.list_ports
+    BAUDRATE =  9600
+    TIMEOUT = None
+    SCREEN_WIDTH = 80
+
+    ## Take command-line arguments to override defaults above
+    import sys
+    if len(sys.argv) == 3:
+        port = sys.argv[1]
+        baudrate = int(sys.argv[2])
+    else:                        # nothing passed, use defaults 
+        print ("Optional arguments port, baudrate set to defaults.")
+        port, baudrate = (PORT, BAUDRATE)
+        
+    serialPort = serial.Serial(port, baudrate, timeout=TIMEOUT)
+    serialPort.flush()
+    cheapoScope(serialPort)
diff --git a/Make AVR Examples/Chapter08_Hardware-Interrupts/helloInterrupt/Makefile b/Make AVR Examples/Chapter08_Hardware-Interrupts/helloInterrupt/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter08_Hardware-Interrupts/helloInterrupt/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter08_Hardware-Interrupts/helloInterrupt/helloInterrupt.c b/Make AVR Examples/Chapter08_Hardware-Interrupts/helloInterrupt/helloInterrupt.c
new file mode 100644
index 0000000..ab420c8
--- /dev/null
+++ b/Make AVR Examples/Chapter08_Hardware-Interrupts/helloInterrupt/helloInterrupt.c	
@@ -0,0 +1,45 @@
+/*
+
+Demo of using interrupts for doing what they do best --
+two things at once.
+
+Flashes LED0 at a fixed rate, interrupting whenever button is pressed.
+
+ */
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+#include "pinDefines.h"
+
+ISR(INT0_vect) {         /* Run every time there is a change on button */
+  if (bit_is_clear(BUTTON_PIN, BUTTON)) {
+    LED_PORT |= (1 << LED1);
+  }
+  else {
+    LED_PORT &= ~(1 << LED1);
+  }
+}
+
+void initInterrupt0(void) {
+  EIMSK |= (1 << INT0);                                 /* enable INT0 */
+  EICRA |= (1 << ISC00);                /* trigger when button changes */
+  sei();                          /* set (global) interrupt enable bit */
+}
+
+int main(void) {
+  // -------- Inits --------- //
+  LED_DDR = 0xff;                                   /* all LEDs active */
+  BUTTON_PORT |= (1 << BUTTON);                              /* pullup */
+  initInterrupt0();
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    _delay_ms(200);
+    LED_PORT ^= (1 << LED0);
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter08_Hardware-Interrupts/helloPinChangeInterrupt/Makefile b/Make AVR Examples/Chapter08_Hardware-Interrupts/helloPinChangeInterrupt/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter08_Hardware-Interrupts/helloPinChangeInterrupt/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter08_Hardware-Interrupts/helloPinChangeInterrupt/helloPinChangeInterrupt.c b/Make AVR Examples/Chapter08_Hardware-Interrupts/helloPinChangeInterrupt/helloPinChangeInterrupt.c
new file mode 100644
index 0000000..16951a5
--- /dev/null
+++ b/Make AVR Examples/Chapter08_Hardware-Interrupts/helloPinChangeInterrupt/helloPinChangeInterrupt.c	
@@ -0,0 +1,39 @@
+     /* Demo using pin-change interrupts and in-ISR debouncing routine */
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+#include "pinDefines.h"
+
+
+ISR(PCINT2_vect) {              /* Run every time button state changes */
+  if (bit_is_clear(BUTTON_PIN, BUTTON)) {
+    LED_PORT |= (1 << LED1);
+  }
+  else {
+    LED_PORT &= ~(1 << LED1);
+  }
+}
+
+void initPinChangeInterrupt18(void) {
+  PCICR |= (1 << PCIE2);        /* set pin-change interrupt for D pins */
+  PCMSK2 |= (1 << PCINT18);      /* set mask to look for PCINT18 / PD2 */
+  sei();                          /* set (global) interrupt enable bit */
+}
+
+int main(void) {
+  // -------- Inits --------- //
+  LED_DDR = 0xff;                                   /* all LEDs active */
+  BUTTON_PORT |= (1 << BUTTON);                              /* pullup */
+  initPinChangeInterrupt18();
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    _delay_ms(200);
+    LED_PORT ^= (1 << LED0);
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/amRadio/Makefile b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/amRadio/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/amRadio/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/amRadio/amRadio.c b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/amRadio/amRadio.c
new file mode 100644
index 0000000..f3f341d
--- /dev/null
+++ b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/amRadio/amRadio.c	
@@ -0,0 +1,81 @@
+/*
+Plays a simple tune, broadcasts it in the AM radio band.
+*/
+
+// ------- Preamble -------- //
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#include <util/delay.h>                     /* Functions to waste time */
+#include <avr/power.h>
+#include <avr/interrupt.h>
+#include "pinDefines.h"
+#include "scale16.h"
+
+#define COUNTER_VALUE   3              /* determines carrier frequency */
+
+// From f = f_cpu / ( 2* N* (1 + OCRnx) )
+// Good values for the AM band from 2 to 6: pick one that's clear
+// Divide by two b/c we're toggling on or off each loop;
+//  a full cycle of the carrier takes two loops.
+// 8Mhz / (2 * 1 * (1+2)) = 1333 kHz
+// 8Mhz / (2 * 1 * (1+3)) = 1000 kHz
+// 8Mhz / (2 * 1 * (1+4)) = 800 kHz
+// 8Mhz / (2 * 1 * (1+5)) = 670 kHz
+// 8Mhz / (2 * 1 * (1+6)) = 570 kHz
+// 8Mhz / (2 * 1 * (1+7)) = 500 kHz
+
+static inline void initTimer0(void) {
+  TCCR0A |= (1 << WGM01);                                  /* CTC mode */
+  TCCR0A |= (1 << COM0B0);            /* Toggles pin each time through */
+  TCCR0B |= (1 << CS00);              /* Clock at CPU frequency, ~8MHz */
+  OCR0A = COUNTER_VALUE;                          /* carrier frequency */
+}
+
+static inline void initTimer1(void) {
+  TCCR1B |= (1 << WGM12);                                  /* CTC mode */
+  TCCR1B |= (1 << CS11);            /* Clock at CPU/8 frequency, ~1MHz */
+  TIMSK1 |= (1 << OCIE1A);          /* enable output compare interrupt */
+}
+
+ISR(TIMER1_COMPA_vect) {                 /* ISR for audio-rate Timer 1 */
+  ANTENNA_DDR ^= (1 << ANTENNA);          /* toggle carrier on and off */
+}
+
+static inline void transmitBeep(uint16_t pitch, uint16_t duration) {
+  OCR1A = pitch;                               /* set pitch for timer1 */
+  sei();                                         /* turn on interrupts */
+  do {
+    _delay_ms(1);                            /* delay for pitch cycles */
+    duration--;
+  } while (duration > 0);
+  cli();                  /* and disable ISR so that it stops toggling */
+  ANTENNA_DDR |= (1 << ANTENNA);               /* back on full carrier */
+}
+
+int main(void) {
+  // -------- Inits --------- //
+
+  clock_prescale_set(clock_div_1);                  /* CPU clock 8 MHz */
+  initTimer0();
+  initTimer1();
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    transmitBeep(E3, 200);
+    _delay_ms(100);
+    transmitBeep(E3, 200);
+    _delay_ms(200);
+    transmitBeep(E3, 200);
+    _delay_ms(200);
+    transmitBeep(C3, 200);
+    transmitBeep(E3, 200);
+    _delay_ms(200);
+    transmitBeep(G3, 400);
+    _delay_ms(500);
+    transmitBeep(G2, 400);
+
+    _delay_ms(2500);
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/amRadio/scale16.h b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/amRadio/scale16.h
new file mode 100644
index 0000000..73d968c
--- /dev/null
+++ b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/amRadio/scale16.h	
@@ -0,0 +1,78 @@
+/* Scale in the key of 1/10000 */
+
+/* 
+   These are periods -- if you delay this long, 
+   then toggle the speaker pin, you'll get approximate
+   pitches.  
+
+   This is the 16-bit version.  The pitches get less accurate
+   as they get higher, but not as bad as the 8-bit one.
+   
+   "x" denotes sharp.
+   
+   Can be generated by Python:
+
+   import math
+   scale = ['C', 'Cx', 'D', 'Dx', 'E', 'F', 'Fx', 'G', 'Gx', 'A', 'Ax', 'B']
+   
+   def octave(baseLength):
+       periods = [baseLength / math.exp(x*math.log(2)/12) for x in range(0, 12)]
+       periods = [int(round(x)) for x in periods]
+       return( zip(scale, periods) )
+
+   for i in range(0,4):
+       for note, period in octave(10000 / 2**i):
+           if period < 65500:
+	       noteString = note + str(i)
+	       print "#define  {:<5}{:>6}".format(noteString, period)
+*/
+
+
+#define  C0    10000
+#define  Cx0    9439
+#define  D0     8909
+#define  Dx0    8409
+#define  E0     7937
+#define  F0     7492
+#define  Fx0    7071
+#define  G0     6674
+#define  Gx0    6300
+#define  A0     5946
+#define  Ax0    5612
+#define  B0     5297
+#define  C1     5000
+#define  Cx1    4719
+#define  D1     4454
+#define  Dx1    4204
+#define  E1     3969
+#define  F1     3746
+#define  Fx1    3536
+#define  G1     3337
+#define  Gx1    3150
+#define  A1     2973
+#define  Ax1    2806
+#define  B1     2649
+#define  C2     2500
+#define  Cx2    2360
+#define  D2     2227
+#define  Dx2    2102
+#define  E2     1984
+#define  F2     1873
+#define  Fx2    1768
+#define  G2     1669
+#define  Gx2    1575
+#define  A2     1487
+#define  Ax2    1403
+#define  B2     1324
+#define  C3     1250
+#define  Cx3    1180
+#define  D3     1114
+#define  Dx3    1051
+#define  E3      992
+#define  F3      936
+#define  Fx3     884
+#define  G3      834
+#define  Gx3     787
+#define  A3      743
+#define  Ax3     702
+#define  B3      662
diff --git a/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/reactionTimer/Makefile b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/reactionTimer/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/reactionTimer/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/reactionTimer/reactionTimer.c b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/reactionTimer/reactionTimer.c
new file mode 100644
index 0000000..c611b28
--- /dev/null
+++ b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/reactionTimer/reactionTimer.c	
@@ -0,0 +1,68 @@
+/*
+   Press the button as quickly as you can after the LEDs light up.
+   Your time is printed out over the serial port.
+*/
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+#include "pinDefines.h"
+#include "USART.h"
+
+#include "support.h"
+
+static inline void initTimer1(void) {
+                               /* Normal mode (default), just counting */
+  TCCR1B |= (1 << CS11) | (1 << CS10);
+  /* Clock speed: 1 MHz / 64,
+     each tick is 64 microseconds ~= 15.6 per ms  */
+                                            /* No special output modes */
+}
+
+int main(void) {
+  uint16_t timerValue;
+
+  // -------- Inits --------- //
+
+  initUSART();
+  initTimer1();
+  LED_DDR = 0xff;                               /* all LEDs for output */
+  BUTTON_PORT |= (1 << BUTTON);             /* enable internal pull-up */
+
+  printString("\r\nReaction Timer:\r\n");
+  printString("---------------\r\n");
+  printString("Press any key to start.\r\n");
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    receiveByte();                                    /* press any key */
+    printString("\r\nGet ready...");
+    randomDelay();
+
+    printString("\r\nGo!\r\n");
+    LED_PORT = 0xff;                                     /* light LEDs */
+    TCNT1 = 0;                                        /* reset counter */
+
+    if (bit_is_clear(BUTTON_PIN, BUTTON)) {
+            /* Button pressed _exactly_ as LEDs light up.  Suspicious. */
+      printString("You're only cheating yourself.\r\n");
+    }
+    else {
+      // Wait until button pressed, save timer value.
+      loop_until_bit_is_clear(BUTTON_PIN, BUTTON);
+      timerValue = TCNT1 >> 4;
+      /* each tick is approx 1/16 milliseconds, so we bit-shift divide */
+
+      printMilliseconds(timerValue);
+      printComments(timerValue);
+    }
+
+    // Clear LEDs and start again.
+    LED_PORT = 0x00;
+    printString("Press any key to try again.\r\n");
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/reactionTimer/support.c b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/reactionTimer/support.c
new file mode 100644
index 0000000..822601f
--- /dev/null
+++ b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/reactionTimer/support.c	
@@ -0,0 +1,92 @@
+
+#include "support.h"
+
+void printMilliseconds(uint16_t value) {
+  /* Given a value in milliseconds, prints out how many seconds
+     you took over the serial port.  Does ascii conversion, prints
+     decimal point, and drops extra leading zeros.
+   */
+  uint8_t digit;
+
+  printString("\r\nYou took ");
+                                               /* add up ten-thousands */
+  digit = 0;
+  while (value >= 10000) {
+    digit++;
+    value -= 10000;
+  }
+  if (digit) {
+    transmitByte('0' + digit);
+  }
+                                                   /* add up thousands */
+  digit = 0;
+  while (value >= 1000) {
+    digit++;
+    value -= 1000;
+  }
+  transmitByte('0' + digit);
+
+                            /* decimal point here b/c dividing by 1000 */
+  transmitByte('.');
+
+                                                    /* add up hundreds */
+  digit = 0;
+  while (value >= 100) {
+    digit++;
+    value -= 100;
+  }
+  transmitByte('0' + digit);
+                                                        /* add up tens */
+  digit = 0;
+  while (value >= 10) {
+    digit++;
+    value -= 10;
+  }
+  transmitByte('0' + digit);
+
+  // Ones digit is easy.
+  transmitByte('0' + value);
+
+  printString(" seconds.\r\n");
+}
+
+void printComments(uint16_t value) {
+            /* Given a value in milliseconds, rates your reaction time */
+  if (value > 2000) {
+    printString("---->  Ummm...this is a reaction timer...\r\n");
+  }
+  else if (value > 1000) {
+    printString("---->  Hello?\r\n");
+  }
+  else if (value > 500) {
+    printString("---->  Slow.\r\n");
+  }
+  else if (value > 250) {
+    printString("---->  Have another cup of coffee.\r\n");
+  }
+  else if (value > 200) {
+    printString("---->  Respectable.\r\n");
+  }
+  else if (value >= 150) {
+    printString("---->  Fast.\r\n");
+  }
+  else if (value < 150) {
+    printString("---->  Amazing!\r\n");
+  }
+}
+
+void randomDelay(void) {
+                        /* Waits for a "random" delay from 1 - 3.5 sec */
+                           /* Requires timer 1 initialized and running */
+  /* It's not really random, but very hard to control --
+     like coin-flipping. */
+  uint8_t randomTime;
+
+  _delay_ms(1000);                              /* wait at least 1 sec */
+  randomTime = (uint8_t) TCNT1;
+  /* type-casting the 16-bit TCNT1 as an 8-bit number keeps
+     only the 8 least-significant (fastest-changing) bits  */
+  while (--randomTime) {
+    _delay_ms(10);                      /* max value is 255 ~= 2.5 sec */
+  }
+}
diff --git a/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/reactionTimer/support.h b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/reactionTimer/support.h
new file mode 100644
index 0000000..5ec669b
--- /dev/null
+++ b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/reactionTimer/support.h	
@@ -0,0 +1,24 @@
+
+  /* Support functions that otherwise make the main code more readable */
+
+                                                           /* Includes */
+#include <util/delay.h>
+#include <avr/io.h>
+#include "USART.h"
+
+                                   /* Function Prototypes in support.c */
+
+void printMilliseconds(uint16_t value);
+  /* Given a value in milliseconds, prints out how many seconds
+     you took over the serial port.  Does ascii conversion, prints
+     decimal point, and drops extra leading zeros.
+   */
+
+void printComments(uint16_t value);
+            /* Given a value in milliseconds, rates your reaction time */
+
+void randomDelay(void);
+                        /* Waits for a "random" delay from 1 - 3.5 sec */
+                           /* Requires timer 1 initialized and running */
+  /* It's not really random, but very hard to control
+     like coin-flipping. */
diff --git a/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/timerAudio/Makefile b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/timerAudio/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/timerAudio/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/timerAudio/scale8.h b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/timerAudio/scale8.h
new file mode 100644
index 0000000..f6c1b3b
--- /dev/null
+++ b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/timerAudio/scale8.h	
@@ -0,0 +1,48 @@
+                                          /* Scale in the key of 1/200 */
+
+/*
+   These are periods -- if you delay this long,
+   then toggle the speaker pin, you'll get approximate
+   pitches.
+
+   This is the 8-bit version.  The pitches get less accurate
+   as they get higher.
+
+*/
+
+#define Gx0 252
+#define A0  238
+#define Ax0 224
+#define B0  212
+#define C1  200
+#define Cx0 189
+#define D1  178
+#define Dx0 168
+#define E1  159
+#define F1  150
+#define Fx1 141
+#define G1  133
+#define Gx1 126
+#define A1  119
+#define Ax1 112
+#define B1  106
+#define C2  100
+#define Cx2 94
+#define D2  89
+#define Dx2 84
+#define E2  79
+#define F2  75
+#define Fx2 71
+#define G2  67
+#define Gx2 63
+#define A2  59
+#define Ax2 56
+#define B2  53
+#define C3  50
+#define Cx3 47
+#define D3  44
+#define Dx3 42
+#define E3  40
+#define F3  37
+#define Fx3 35
+#define G3  33
diff --git a/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/timerAudio/timerAudio.c b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/timerAudio/timerAudio.c
new file mode 100644
index 0000000..f348d59
--- /dev/null
+++ b/Make AVR Examples/Chapter09_Introduction-to-Timer-Counter-Hardware/timerAudio/timerAudio.c	
@@ -0,0 +1,49 @@
+/*
+
+Quick audio demo using Timer 0 to generate audio frequencies directly.
+
+*/
+
+// ------- Preamble -------- //
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#include <util/delay.h>                     /* Functions to waste time */
+#include "pinDefines.h"
+#include "scale8.h"                                     /* 8-bit scale */
+
+static inline void initTimer(void) {
+  TCCR0A |= (1 << WGM01);                                  /* CTC mode */
+  TCCR0A |= (1 << COM0A0);           /* Toggles pin each cycle through */
+  TCCR0B |= (1 << CS00) | (1 << CS01);               /* CPU clock / 64 */
+}
+
+static inline void playNote(uint8_t period, uint16_t duration) {
+
+  TCNT0 = 0;                                      /* reset the counter */
+  OCR0A = period;                                     /* set pitch */
+  SPEAKER_DDR |= (1 << SPEAKER);           /* enable output on speaker */
+
+  while (duration) {                                 /* Variable delay */
+    _delay_ms(1);
+    duration--;
+  }
+  SPEAKER_DDR &= ~(1 << SPEAKER);                  /* turn speaker off */
+}
+
+int main(void) {
+  // -------- Inits --------- //
+  initTimer();
+  // ------ Event loop ------ //
+  while (1) {
+                                                    /* Play some notes */
+    playNote(C2, 200);
+    playNote(E2, 200);
+    playNote(G2, 200);
+    playNote(C3, 400);
+
+    _delay_ms(1000);
+    _delay_ms(1000);
+    _delay_ms(1000);
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter10_Pulse-Width-Modulation/bruteForcePWM/Makefile b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/bruteForcePWM/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/bruteForcePWM/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter10_Pulse-Width-Modulation/bruteForcePWM/pwm.c b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/bruteForcePWM/pwm.c
new file mode 100644
index 0000000..1031dcd
--- /dev/null
+++ b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/bruteForcePWM/pwm.c	
@@ -0,0 +1,47 @@
+/*
+ * Quick and dirty PWM Demo
+ */
+
+// ------- Preamble -------- //
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#include <util/delay.h>                     /* Functions to waste time */
+#include "pinDefines.h"
+
+#define LED_DELAY 2
+
+int main(void) {
+
+  uint8_t brightness = 0;
+  int8_t direction = 1;
+  uint8_t i;
+
+  // -------- Inits --------- //
+
+  LED_DDR = 0xff;                                     /* Init all LEDs */
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    // PWM
+    for (i = 0; i < 255; i++) {
+      if (i < brightness) {
+        LED_PORT = 0xff;                                    /* turn on */
+      }
+      else {
+        LED_PORT = 0;                                      /* turn off */
+      }
+      _delay_us(LED_DELAY);
+    }
+
+    // Brighten and dim
+    if (brightness == 0) {
+      direction = 1;
+    }
+    if (brightness == 255) {
+      direction = -1;
+    }
+    brightness += direction;
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm/Makefile b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm/pinDefines.h b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm/pinDefines.h
new file mode 100644
index 0000000..19eb378
--- /dev/null
+++ b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm/pinDefines.h	
@@ -0,0 +1,93 @@
+// ---------------
+//   Pin Defines
+// ---------------
+
+#define LED_PORT                PORTB
+#define LED_PIN                 PINB
+#define LED_DDR                 DDRB
+
+#define LED0                    PB0
+#define LED1                    PB1
+#define LED2                    PB2
+#define LED3                    PB3
+#define LED4                    PB4
+#define LED5                    PB5
+#define LED6                    PB6
+#define LED7                    PB7
+
+#define BUTTON                  PD2
+#define BUTTON_PORT             PORTD
+#define BUTTON_PIN              PIND
+#define BUTTON_DDR              DDRD
+
+#define BUTTON2                 PD3
+#define BUTTON_PORT             PORTD
+#define BUTTON_PIN              PIND
+#define BUTTON_DDR              DDRD
+
+#define BUTTON3                 PD4
+#define BUTTON_PORT             PORTD
+#define BUTTON_PIN              PIND
+#define BUTTON_DDR              DDRD
+
+#define SPEAKER                 PD6                            /* OC0A */
+#define SPEAKER_PORT            PORTD
+#define SPEAKER_PIN             PIND
+#define SPEAKER_DDR             DDRD
+
+#define ANTENNA                 PD5                            /* OC0B */
+#define ANTENNA_PORT            PORTD
+#define ANTENNA_PIN             PIND
+#define ANTENNA_DDR             DDRD
+
+#define MODULATION              PD3                            /* OC2B */
+#define MODULATION_PORT         PORTD
+#define MODULATION_PIN          PIND
+#define MODULATION_DDR          DDRD
+
+#define LIGHT_SENSOR            PC0                            /* ADC0 */
+#define LIGHT_SENSOR_PORT       PORTC
+#define LIGHT_SENSOR_PIN        PINC
+#define LIGHT_SENSOR_DDR        DDRC
+
+#define CAP_SENSOR              PC1                            /* ADC1 */
+#define CAP_SENSOR_PORT         PORTC
+#define CAP_SENSOR_PIN          PINC
+#define CAP_SENSOR_DDR          DDRC
+
+#define PIEZO                   PC2                            /* ADC2 */
+#define PIEZO_PORT              PORTC
+#define PIEZO_PIN               PINC
+#define PIEZO_DDR               DDRC
+
+//  SPI and I2C serial mode defines
+
+#define SPI_SS                     PB2
+#define SPI_SS_PORT                PORTB
+#define SPI_SS_PIN                 PINB
+#define SPI_SS_DDR                 DDRB
+
+#define SPI_MOSI                     PB3
+#define SPI_MOSI_PORT                PORTB
+#define SPI_MOSI_PIN                 PINB
+#define SPI_MOSI_DDR                 DDRB
+
+#define SPI_MISO                     PB4
+#define SPI_MISO_PORT                PORTB
+#define SPI_MISO_PIN                 PINB
+#define SPI_MISO_DDR                 DDRB
+
+#define SPI_SCK                     PB5
+#define SPI_SCK_PORT                PORTB
+#define SPI_SCK_PIN                 PINB
+#define SPI_SCK_DDR                 DDRB
+
+#define I2C_SDA                     PC4
+#define I2C_SDA_PORT                PORTC
+#define I2C_SDA_PIN                 PINC
+#define I2C_SDA_DDR                 DDRC
+
+#define I2C_SCL                     PC5
+#define I2C_SCL_PORT                PORTC
+#define I2C_SCL_PIN                 PINC
+#define I2C_SCL_DDR                 DDRC
diff --git a/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm/pwm.c b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm/pwm.c
new file mode 100644
index 0000000..04edd15
--- /dev/null
+++ b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm/pwm.c	
@@ -0,0 +1,45 @@
+                                           /* Quick and dirty PWM Demo */
+
+// ------- Preamble -------- //
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#include <util/delay.h>                     /* Functions to waste time */
+#include "pinDefines.h"
+
+#define LED_DELAY  20                                  /* microseconds */
+
+void pwmAllPins(uint8_t brightness) {
+  uint8_t i;
+  LED_PORT = 0xff;                                          /* turn on */
+  for (i = 0; i < 255; i++) {
+    if (i >= brightness) {            /* once it's been on long enough */
+      LED_PORT = 0;                                        /* turn off */
+    }
+    _delay_us(LED_DELAY);
+  }
+}
+
+int main(void) {
+
+  uint8_t brightness = 0;
+  int8_t direction = 1;
+
+  // -------- Inits --------- //
+
+  // Init all LEDs
+  LED_DDR = 0xff;
+  // ------ Event loop ------ //
+  while (1) {
+    // Brighten and dim
+    if (brightness == 0) {
+      direction = 1;
+    }
+    if (brightness == 255) {
+      direction = -1;
+    }
+    brightness += direction;
+    pwmAllPins(brightness);
+
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwmOnAnyPin/Makefile b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwmOnAnyPin/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwmOnAnyPin/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwmOnAnyPin/pwmOnAnyPin.c b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwmOnAnyPin/pwmOnAnyPin.c
new file mode 100644
index 0000000..729f506
--- /dev/null
+++ b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwmOnAnyPin/pwmOnAnyPin.c	
@@ -0,0 +1,59 @@
+// Quick and dirty demo of how to get PWM on any pin with interrupts
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+#include "pinDefines.h"
+
+#define DELAY 3
+
+volatile uint8_t brightnessA;
+volatile uint8_t brightnessB;
+
+// -------- Functions --------- //
+static inline void initTimer0(void) {
+                                 /* must be /64 or more for ISR timing */
+  TCCR0B |= (1 << CS01) | (1 << CS00);
+                                     /* both output compare interrupts */
+  TIMSK0 |= ((1 << OCIE0A) | (1 << OCIE1B));
+  TIMSK0 |= (1 << TOIE0);                 /* overflow interrupt enable */
+  sei();
+}
+
+ISR(TIMER0_OVF_vect) {
+  LED_PORT = 0xff;
+  OCR0A = brightnessA;
+  OCR0B = brightnessB;
+}
+ISR(TIMER0_COMPA_vect) {
+  LED_PORT &= 0b11110000;                    /* turn off low four LEDs */
+}
+ISR(TIMER0_COMPB_vect) {
+  LED_PORT &= 0b00001111;                   /* turn off high four LEDs */
+}
+
+int main(void) {
+  // -------- Inits --------- //
+
+  uint8_t i;
+  LED_DDR = 0xff;
+  initTimer0();
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    for (i = 0; i < 255; i++) {
+      _delay_ms(DELAY);
+      brightnessA = i;
+      brightnessB = 255 - i;
+    }
+
+    for (i = 254; i > 0; i--) {
+      _delay_ms(DELAY);
+      brightnessA = i;
+      brightnessB = 255 - i;
+    }
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwmTimers/Makefile b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwmTimers/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwmTimers/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwmTimers/pwmTimers.c b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwmTimers/pwmTimers.c
new file mode 100644
index 0000000..4c18946
--- /dev/null
+++ b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwmTimers/pwmTimers.c	
@@ -0,0 +1,50 @@
+                       /* PWM Demo with serial control over three LEDs */
+
+// ------- Preamble -------- //
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#include <util/delay.h>                     /* Functions to waste time */
+#include "pinDefines.h"
+#include "USART.h"
+
+static inline void initTimers(void) {
+  // Timer 1 A,B
+  TCCR1A |= (1 << WGM10);                      /* Fast PWM mode, 8-bit */
+  TCCR1B |= (1 << WGM12);                       /* Fast PWM mode, pt.2 */
+  TCCR1B |= (1 << CS11);                     /* PWM Freq = F_CPU/8/256 */
+  TCCR1A |= (1 << COM1A1);                      /* PWM output on OCR1A */
+  TCCR1A |= (1 << COM1B1);                      /* PWM output on OCR1B */
+
+  // Timer 2
+  TCCR2A |= (1 << WGM20);                             /* Fast PWM mode */
+  TCCR2A |= (1 << WGM21);                       /* Fast PWM mode, pt.2 */
+  TCCR2B |= (1 << CS21);                     /* PWM Freq = F_CPU/8/256 */
+  TCCR2A |= (1 << COM2A1);                      /* PWM output on OCR2A */
+}
+
+int main(void) {
+
+  uint8_t brightness;
+
+  // -------- Inits --------- //
+
+  initTimers();
+  initUSART();
+  printString("-- LED PWM Demo --\r\n");
+
+               /* enable output on LED pins, triggered by PWM hardware */
+  LED_DDR |= (1 << LED1);
+  LED_DDR |= (1 << LED2);
+  LED_DDR |= (1 << LED3);
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    printString("\r\nEnter (0-255) for PWM duty cycle: ");
+    brightness = getNumber();
+    OCR2A = OCR1B;
+    OCR1B = OCR1A;
+    OCR1A = brightness;
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm_cross-fading_cylons/Makefile b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm_cross-fading_cylons/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm_cross-fading_cylons/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm_cross-fading_cylons/cross-fading_cylons.c b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm_cross-fading_cylons/cross-fading_cylons.c
new file mode 100644
index 0000000..439873e
--- /dev/null
+++ b/Make AVR Examples/Chapter10_Pulse-Width-Modulation/pwm_cross-fading_cylons/cross-fading_cylons.c	
@@ -0,0 +1,60 @@
+/*
+
+Cross-fading Cylon Eyes
+A PWM demo
+
+*/
+
+// ------- Preamble -------- //
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#include <util/delay.h>                     /* Functions to waste time */
+#include "pinDefines.h"
+
+
+int main(void) {
+
+  uint8_t thisEye = 0;
+  uint8_t nextEye = 1;
+  uint8_t brightness = 0;
+  int8_t direction = 1;
+  uint8_t i;
+
+  // -------- Inits --------- //
+
+  // Init all LEDs
+  LED_DDR = 0xff;
+  SPEAKER_DDR |= (1 << SPEAKER);
+  // ------ Event loop ------ //
+  while (1) {
+
+    // PWM
+    for (brightness = 0; brightness < 255; brightness++) {
+      for (i = 0; i < 255; i++) {
+        if (i < brightness) {
+          LED_PORT &= ~(1 << thisEye);                     /* dimming */
+          LED_PORT |= (1 << nextEye);              /* getting brighter */
+        }
+        else {
+          LED_PORT |= (1 << thisEye);
+          LED_PORT &= ~(1 << nextEye);
+        }
+        LED_PORT &= ~(1 << thisEye);            /* make sure it's off */
+      }
+    }
+
+    // Cylon Scan
+    thisEye += direction;                       /* move on to next eye */
+
+    if (thisEye == 0) {
+      direction = 1;
+    }
+    if (thisEye == 7) {
+      direction = -1;
+    }
+
+    nextEye = thisEye + direction;
+
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/Makefile b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/_servoClockFunctions.c b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/_servoClockFunctions.c
new file mode 100644
index 0000000..632bd46
--- /dev/null
+++ b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/_servoClockFunctions.c	
@@ -0,0 +1,45 @@
+#include "_servoClockFunctions.h"
+
+// Realtime-clock handling functions
+void initTimer0_Clock(void) {
+                  /* Normal mode, just used for the overflow interrupt */
+  TCCR0B |= (1 << CS00);  /* 8 MHz clock = ~31250 overflows per second */
+  TIMSK0 |= (1 << TOIE0);           /* timer overflow interrupt enable */
+}
+
+void everySecond(void) {
+  seconds++;
+  if (seconds > 59) {
+    seconds = 0;
+    everyMinute();
+  }
+  LED_PORT ^= (1 << LED0);                                    /* blink */
+  printTime(hours, minutes, seconds);                 /* serial output */
+           /* Turn off servo motor after three seconds into new minute */
+  if (seconds == 3) {
+    disableServo();
+  }
+}
+void everyMinute(void) {
+  minutes++;
+  if (minutes > 59) {
+    minutes = 0;
+    everyHour();
+  }
+  // If during business hours, set servo to new minute
+  // Otherwise, don't need to move motor when laser is off
+  if ((hours >= START_TIME) && (hours < STOP_TIME)) {
+    setServoPosition();
+    enableServo();
+    LASER_PORT |= (1 << LASER);               /* make sure laser is on */
+  }
+  else {                                     /* make sure laser is off */
+    LASER_PORT &= ~(1 << LASER);
+  }
+}
+void everyHour(void) {
+  hours++;
+  if (hours > 23) {                       /* loop around at end of day */
+    hours = 0;
+  }
+}
diff --git a/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/_servoClockFunctions.h b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/_servoClockFunctions.h
new file mode 100644
index 0000000..3581829
--- /dev/null
+++ b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/_servoClockFunctions.h	
@@ -0,0 +1,18 @@
+
+
+#include "servoSundial.h"
+// Note: Global variables (ticks, seconds, minutes, hours)
+// are declared in servoSundial.h 
+// and defined in servoSundial.c
+
+// Realtime-clock handling functions
+
+// This sets up the interrupt clock
+void initTimer0_Clock(void); 
+
+// These functions are called periodically
+// to update the global time variables
+// They cascade when needed (second -> minute)
+void everySecond(void); 
+void everyMinute(void); 
+void everyHour(void); 
diff --git a/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/_servoSerialHelpers.c b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/_servoSerialHelpers.c
new file mode 100644
index 0000000..8760cf4
--- /dev/null
+++ b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/_servoSerialHelpers.c	
@@ -0,0 +1,34 @@
+              /* Functions for serial port output formatting and input */
+#include "_servoSerialHelpers.h"
+
+void printTime(uint8_t hours, uint8_t minutes, uint8_t seconds) {
+  printByte(hours);
+  transmitByte(':');
+  printByte(minutes);
+  transmitByte(':');
+  printByte(seconds);
+  transmitByte('\r');
+  transmitByte('\n');
+}
+
+void pollSerial(void) {
+                          /* Poll for serial input -- to set the time. */
+  char input;
+  if (bit_is_set(UCSR0A, RXC0)) {
+    input = UDR0;
+    if (input == 'S') {                         /* enter set-time mode */
+      printString("Setting time...\r\n");
+      printString("Hour: ");
+      hours = getNumber();
+      printString("\r\nMinutes: ");
+      minutes = getNumber();
+      printString("\r\nSeconds: ");
+      seconds = getNumber();
+      printString("\r\n");
+      ticks = 0;
+      if ((hours >= START_TIME) && (hours < STOP_TIME)) {
+        setServoPosition();
+      }
+    }
+  }
+}
diff --git a/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/_servoSerialHelpers.h b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/_servoSerialHelpers.h
new file mode 100644
index 0000000..5b86999
--- /dev/null
+++ b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/_servoSerialHelpers.h	
@@ -0,0 +1,8 @@
+              /* Functions for serial port output formatting and input */
+
+#include "servoSundial.h"
+// Prints out the time, nicely formatted
+void printTime(uint8_t hours, uint8_t minutes, uint8_t seconds); 
+// Polls for serial input
+// sets the time if receives an "S"
+void pollSerial(void); 
diff --git a/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/calibrateTime.py b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/calibrateTime.py
new file mode 100644
index 0000000..216207a
--- /dev/null
+++ b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/calibrateTime.py	
@@ -0,0 +1,86 @@
+
+
+import time
+import serial
+
+def readTime(serialPort):
+    '''Reads the time from the AVR over the serial port'''
+    serialPort.flushInput()
+    character = ""
+    while(not character == "\n"):     # loop until see end of line 
+        character = serialPort.read(1)
+    ## The time string looks something like '011:045:023\r\n'
+    timeString = serialPort.read(13) 
+    hms = timeString.split(":")
+    hms = [int(x) for x in hms] # make hour, minute, second numeric
+    return(hms)
+
+def setTime(serialPort, hours, minutes, seconds):
+    '''Sends the time over the serial port'''
+    serialPort.flushOutput()
+    serialPort.write("S")
+    time.sleep(0.1)             # delay while AVR sends
+    serialPort.write(str(hours) + "\r")
+    time.sleep(0.2)             # delay while AVR sends
+    serialPort.write(str(minutes) + "\r")
+    time.sleep(0.2)             # delay while AVR sends
+    serialPort.write(str(seconds) + "\r")
+    
+def setTimeNow(serialPort):
+    '''Sets the AVR clock to the current time'''
+    hours, minutes, seconds = time.localtime()[3:6]    
+    setTime(serialPort, hours, minutes, seconds)
+    return(time.time())
+
+def calculateTimeDelay(serialPort):
+    '''Gets AVR time and subtracts off actual (computer) time'''
+    avrHMS = readTime(serialPort)
+    hms = time.localtime()[3:6]
+    hmsDifference = [x - y for x,y in zip(avrHMS, hms)]
+    out = "AVR is fast by: {x[0]} hours, {x[1]} minutes, and {x[2]} seconds"
+    print out.format(x=hmsDifference)
+    return(hmsDifference)
+
+def calculateTimeDrift(serialPort, startTime):
+    '''Calculates the ratio to multiply OVERFLOWS_PER_SECOND 
+    given a start time and current error'''
+    h, m, s = calculateTimeDelay(serialPort)
+    driftSeconds = 60*60*h + 60*m + s
+    elapsed = time.time() - startTime
+    print "After {:.0f} seconds, ".format(elapsed)
+    return (driftSeconds / elapsed + 1)
+ 
+
+if __name__ == "__main__":
+    
+    ## Set time automatically, recording start time, 
+    ##  then periodically calculate multiplication factor
+    OVERFLOWS_PER_SECOND = 31250 # set this to equal the value in your code
+    
+    SLEEP_TIME = 10            
+    ratioLog = []
+
+    s = serial.Serial("/dev/ttyUSB0", 9600, timeout=5)
+    print "Setting time to current time...."
+    ratio = 0
+    while not ratio == 1:       # make sure starting time is right on
+        startTime = setTimeNow(s) 
+        ratio = calculateTimeDrift(s, startTime)
+
+    ## Note: you can either leave this running or 
+    ## you can re-run calculateTimeDrift() at any time in the future, 
+    ## as long as you don't overwrite the original startTime 
+    while(True):
+        ratio = calculateTimeDrift(s, startTime)
+        ratioLog.append([time.time()-startTime, ratio])
+        newOverflow = int(OVERFLOWS_PER_SECOND * ratio)
+        print "OVERFLOWS_PER_SECOND should be {}\n\n".format(newOverflow)
+        time.sleep(SLEEP_TIME)
+        
+    ## As you leave this routine running, you should see it bounce
+    ##  around a lot in the beginning and then settle down after
+    ##  running a few hours.  Ironically, it'll converge to a good
+    ##  number faster if it's initially very out of sync.  (If it
+    ##  drifts faster, you can figure out the drift rate sooner.)
+    ## Leave it running for 24 hours and you'll get one-second-per-day 
+    ##  accuracy.
diff --git a/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/justSetTime.py b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/justSetTime.py
new file mode 100644
index 0000000..f57be49
--- /dev/null
+++ b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/justSetTime.py	
@@ -0,0 +1,6 @@
+import serial
+import calibrateTime
+
+s = serial.Serial("/dev/ttyUSB0", 9600, timeout=5)
+calibrateTime.setTimeNow(s)
+s.close()
diff --git a/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/servoSundial.c b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/servoSundial.c
new file mode 100644
index 0000000..8c5f26f
--- /dev/null
+++ b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/servoSundial.c	
@@ -0,0 +1,81 @@
+                           /* Quasi-realtime-clock with servo sundial. */
+
+// ------- Includes -------- //
+#include "servoSundial.h"
+#include "_servoSerialHelpers.h"
+#include "_servoClockFunctions.h"
+
+// -------- Global Variables --------- //
+volatile uint16_t ticks;
+volatile uint8_t hours = 15;                 /* arbitrary default time */
+volatile uint8_t minutes = 42;
+volatile uint8_t seconds = 57;
+
+ISR(TIMER0_OVF_vect) {
+     /* This is going off very frequently, so we should make it speedy */
+  ticks++;
+}
+
+// -------- Functions --------- //
+// Servo setup and utility functions
+void initTimer1_Servo(void) {
+                   /* Set up Timer1 (16bit) to give a pulse every 20ms */
+  TCCR1A |= (1 << WGM11);                       /* Using Fast PWM mode */
+  TCCR1B |= (1 << WGM12);                       /* counter max in ICR1 */
+  TCCR1B |= (1 << WGM13);
+  TCCR1B |= (1 << CS11);         /* /8 prescaling -- microsecond steps */
+  TCCR1A |= (1 << COM1A1);       /* set output on PB1 / OC1A for servo */
+  ICR1 = 20000;                                    /* TOP value = 20ms */
+}
+
+void enableServo(void) {
+  while (TCNT1 < PULSE_OVER) {;
+  }                            /* delay until pulse part of cycle done */
+  SERVO_DDR |= (1 << SERVO);                    /* enable servo pulses */
+}
+
+void disableServo(void) {
+  while (TCNT1 < PULSE_OVER) {;
+  }                            /* delay until pulse part of cycle done */
+  SERVO_DDR &= ~(1 << SERVO);                  /* disable servo pulses */
+}
+
+void setServoPosition(void) {
+  uint32_t elapsedMinutes;
+/* using 32 bits b/c elapsedMinutes * PULSE_RANGE will overflow 16 bits */
+
+
+
+  elapsedMinutes = (hours - START_TIME) * 60 + minutes;
+  OCR1A = PULSE_MIN + elapsedMinutes * PULSE_RANGE / (HOURS_RANGE * 60);
+  enableServo();
+}
+
+int main(void) {
+
+  // -------- Inits --------- //
+  clock_prescale_set(clock_div_1);                  /* CPU clock 8 MHz */
+  initUSART();
+  printString("\r\nWelcome to the Servo Sundial.\r\n");
+  printString("Type S to set time.\r\n");
+
+  initTimer0_Clock();
+  initTimer1_Servo();
+  sei();                                   /* set enable interrupt bit */
+  LED_DDR |= (1 << LED0);                             /* blinky output */
+  LASER_DDR |= (1 << LASER);                    /* enable laser output */
+
+  // ------ Event loop ------ //
+  while (1) {
+
+                                                 /* Poll clock routine */
+    if (ticks == OVERFLOWS_PER_SECOND) {
+      ticks = 0;
+      everySecond();
+    }
+
+    pollSerial();
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/servoSundial.h b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/servoSundial.h
new file mode 100644
index 0000000..72d568c
--- /dev/null
+++ b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/servoSundial.h	
@@ -0,0 +1,53 @@
+                           /* Quasi-realtime-clock with servo sundial. */
+
+// ------- Includes -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+#include <avr/power.h>
+#include "pinDefines.h"
+#include "USART.h"
+
+// Global variables that take care of clock
+extern volatile uint16_t ticks;
+extern volatile uint8_t hours;                 /* arbitrary default time */
+extern volatile uint8_t minutes;
+extern volatile uint8_t seconds;
+
+// ------- Defines -------- //
+#define PULSE_MIN         1000         /* experiment with these values */
+#define PULSE_MAX         2000              /* to match your own servo */
+#define PULSE_RANGE       (PULSE_MAX - PULSE_MIN)
+#define PULSE_OVER        3000        /* Must be larger than PULSE_MAX */
+
+#define START_TIME        10                                  /* 10 am */
+#define STOP_TIME     22                                      /* 10 pm */
+#define HOURS_RANGE        (STOP_TIME - START_TIME - 1)
+
+#define LASER             PB2
+#define LASER_PORT        PORTB
+#define LASER_DDR         DDRB
+
+#define SERVO             PB1
+#define SERVO_PORT        PORTB
+#define SERVO_DDR         DDRB
+
+#define OVERFLOWS_PER_SECOND   31250      /* nominal, should calibrate */
+
+
+// Serial input and output functions
+void pollSerial(void);
+void printTime(uint8_t hours, uint8_t minutes, uint8_t seconds);
+
+// Servo setup and utility functions
+void initTimer1_Servo(void);
+void enableServo(void);
+void disableServo(void);
+void setServoPosition(void);
+
+// Realtime-clock handling functions
+// Use the globals ticks, hours, minutes, seconds
+void initTimer0_Clock(void);
+void everyHour(void);
+void everyMinute(void);
+void everySecond(void);
diff --git a/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/stepHours.py b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/stepHours.py
new file mode 100644
index 0000000..5c72e9e
--- /dev/null
+++ b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoSundial/stepHours.py	
@@ -0,0 +1,17 @@
+import serial
+import calibrateTime
+import time
+
+s = serial.Serial("/dev/ttyUSB0", 9600, timeout=5)
+
+for hour in range(11,25):
+    print "Moving to {}.".format(hour)
+    calibrateTime.setTime(s, hour-2, 59, 59)
+    time.sleep(2)
+    for i in range(0, 60, 5):        
+        calibrateTime.setTime(s, hour-1, i, 00)
+        time.sleep(0.5)         
+    calibrateTime.setTime(s, hour, 0, 0)
+    discardThisInput = raw_input("\tpress return to continue\n")
+
+s.close()
diff --git a/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoWorkout/Makefile b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoWorkout/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoWorkout/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoWorkout/servoWorkout.c b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoWorkout/servoWorkout.c
new file mode 100644
index 0000000..c6d7161
--- /dev/null
+++ b/Make AVR Examples/Chapter11_Driving-Servo-Motors/servoWorkout/servoWorkout.c	
@@ -0,0 +1,94 @@
+                  /* Quick interactive demo running servo with Timer 1 */
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+
+#include "pinDefines.h"
+#include "USART.h"
+
+#define PULSE_MIN         1000         /* experiment with these values */
+#define PULSE_MAX         2000              /* to match your own servo */
+#define PULSE_MID         1500
+
+static inline uint16_t getNumber16(void);
+
+static inline void initTimer1Servo(void) {
+                   /* Set up Timer1 (16bit) to give a pulse every 20ms */
+                             /* Use Fast PWM mode, counter max in ICR1 */
+  TCCR1A |= (1 << WGM11);
+  TCCR1B |= (1 << WGM12) | (1 << WGM13);
+  TCCR1B |= (1 << CS10);  /* /1 prescaling -- counting in microseconds */
+  ICR1 = 20000;                                    /* TOP value = 20ms */
+  TCCR1A |= (1 << COM1A1);              /* Direct output on PB1 / OC1A */
+  DDRB |= (1 << PB1);                            /* set pin for output */
+}
+
+static inline void showOff(void) {
+  printString("Center\r\n");
+  OCR1A = PULSE_MID;
+  _delay_ms(1500);
+  printString("Clockwise Max\r\n");
+  OCR1A = PULSE_MIN;
+  _delay_ms(1500);
+  printString("Counterclockwise Max\r\n");
+  OCR1A = PULSE_MAX;
+  _delay_ms(1500);
+  printString("Center\r\n");
+  OCR1A = PULSE_MID;
+  _delay_ms(1500);
+}
+
+int main(void) {
+
+  // -------- Inits --------- //
+  uint16_t servoPulseLength;
+  OCR1A = PULSE_MID;            /* set it to middle position initially */
+  initTimer1Servo();
+  initUSART();
+  printString("\r\nWelcome to the Servo Demo\r\n");
+  showOff();
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    printString("\r\nEnter a four-digit pulse length:\r\n");
+    servoPulseLength = getNumber16();
+
+    printString("On my way....\r\n");
+    OCR1A = servoPulseLength;
+    DDRB |= (1 << PB1);                        /* re-enable output pin */
+
+    _delay_ms(1000);
+    printString("Releasing...\r\n");
+    while (TCNT1 < 3000) {;
+    }                          /* delay until pulse part of cycle done */
+    DDRB &= ~(1 << PB1);                         /* disable output pin */
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
+
+static inline uint16_t getNumber16(void) {
+  // Gets a PWM value from the serial port.
+  // Reads in characters, turns them into a number
+  char thousands = '0';
+  char hundreds = '0';
+  char tens = '0';
+  char ones = '0';
+  char thisChar = '0';
+
+  do {
+    thousands = hundreds;                        /* shift numbers over */
+    hundreds = tens;
+    tens = ones;
+    ones = thisChar;
+    thisChar = receiveByte();                   /* get a new character */
+    transmitByte(thisChar);                                    /* echo */
+  } while (thisChar != '\r');
+
+  transmitByte('\n');                                       /* newline */
+  return (1000 * (thousands - '0') + 100 * (hundreds - '0') +
+          10 * (tens - '0') + ones - '0');
+}
diff --git a/Make AVR Examples/Chapter12_Analog-to-Digital-Conversion-II/footstepDetector/Makefile b/Make AVR Examples/Chapter12_Analog-to-Digital-Conversion-II/footstepDetector/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter12_Analog-to-Digital-Conversion-II/footstepDetector/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter12_Analog-to-Digital-Conversion-II/footstepDetector/footstepDetector.c b/Make AVR Examples/Chapter12_Analog-to-Digital-Conversion-II/footstepDetector/footstepDetector.c
new file mode 100644
index 0000000..270bb36
--- /dev/null
+++ b/Make AVR Examples/Chapter12_Analog-to-Digital-Conversion-II/footstepDetector/footstepDetector.c	
@@ -0,0 +1,98 @@
+/*
+ *      Sensitive footstep-detector and EWMA demo
+ */
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/sleep.h>
+#include "pinDefines.h"
+#include "USART.h"
+
+#define ON_TIME            2000                        /* milliseconds */
+#define CYCLE_DELAY          10                        /* milliseconds */
+#define INITIAL_PADDING  16                /* higher is less sensitive */
+
+#define SWITCH              PB7     /* Attach LED or switch relay here */
+
+#define USE_POT               0  /* define to 1 if using potentiometer */
+#if USE_POT
+#define POT               PC5                  /* optional padding pot */
+#endif
+
+// -------- Functions --------- //
+void initADC(void) {
+  ADMUX |= (1 << REFS0);                  /* reference voltage to AVCC */
+  ADCSRA |= (1 << ADPS1) | (1 << ADPS2);    /* ADC clock prescaler /64 */
+  ADCSRA |= (1 << ADEN);                                 /* enable ADC */
+}
+
+uint16_t readADC(uint8_t channel) {
+  ADMUX = (0b11110000 & ADMUX) | channel;
+  ADCSRA |= (1 << ADSC);
+  loop_until_bit_is_clear(ADCSRA, ADSC);
+  return (ADC);
+}
+
+int main(void) {
+  // -------- Inits --------- //
+  uint16_t lightsOutTimer = 0;                 /* timer for the switch */
+  uint16_t adcValue;
+  uint16_t middleValue = 511;
+  uint16_t highValue = 520;
+  uint16_t lowValue = 500;
+  uint16_t noiseVolume = 0;
+  uint8_t padding = INITIAL_PADDING;
+
+  LED_DDR = ((1 << LED0) | (1 << LED1) | (1 << SWITCH));
+  initADC();
+  initUSART();
+
+  // ------ Event loop ------ //
+  while (1) {
+    adcValue = readADC(PIEZO);
+
+                     /* moving average -- tracks sensor's bias voltage */
+    middleValue = adcValue + middleValue - ((middleValue - 8) >> 4);
+          /* moving averages for positive and negative parts of signal */
+    if (adcValue > (middleValue >> 4)) {
+      highValue = adcValue + highValue - ((highValue - 8) >> 4);
+    }
+    if (adcValue < (middleValue >> 4)) {
+      lowValue = adcValue + lowValue - ((lowValue - 8) >> 4);
+    }
+            /* "padding" provides a minimum value for the noise volume */
+    noiseVolume = highValue - lowValue + padding;
+
+            /* Now check to see if ADC value above or below thresholds */
+                /* Comparison with >> 4 b/c EWMA is on different scale */
+    if (adcValue < ((middleValue - noiseVolume) >> 4)) {
+      LED_PORT = (1 << LED0) | (1 << SWITCH);       /* one LED, switch */
+      lightsOutTimer = ON_TIME / CYCLE_DELAY;           /* reset timer */
+    }
+    else if (adcValue > ((middleValue + noiseVolume) >> 4)) {
+      LED_PORT = (1 << LED1) | (1 << SWITCH);     /* other LED, switch */
+      lightsOutTimer = ON_TIME / CYCLE_DELAY;           /* reset timer */
+    }
+    else {                            /* Nothing seen, turn off lights */
+      LED_PORT &= ~(1 << LED0);
+      LED_PORT &= ~(1 << LED1);                            /* Both off */
+      if (lightsOutTimer > 0) {                  /* time left on timer */
+        lightsOutTimer--;
+      }
+      else {                                              /* time's up */
+        LED_PORT &= ~(1 << SWITCH);                 /* turn switch off */
+      }
+    }
+#if USE_POT                          /* optional padding potentiometer */
+    padding = readADC(POT) >> 4;         /* scale down to useful range */
+#endif
+                                            /* Serial output and delay */
+           /* ADC is 10-bits, recenter around 127 for display purposes */
+    transmitByte(adcValue - 512 + 127);
+    transmitByte((lowValue >> 4) - 512 + 127);
+    transmitByte((highValue >> 4) - 512 + 127);
+    _delay_ms(CYCLE_DELAY);
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter12_Analog-to-Digital-Conversion-II/voltmeter/Makefile b/Make AVR Examples/Chapter12_Analog-to-Digital-Conversion-II/voltmeter/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter12_Analog-to-Digital-Conversion-II/voltmeter/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter12_Analog-to-Digital-Conversion-II/voltmeter/voltmeter.c b/Make AVR Examples/Chapter12_Analog-to-Digital-Conversion-II/voltmeter/voltmeter.c
new file mode 100644
index 0000000..810ad9a
--- /dev/null
+++ b/Make AVR Examples/Chapter12_Analog-to-Digital-Conversion-II/voltmeter/voltmeter.c	
@@ -0,0 +1,85 @@
+/* ADC Voltmeter
+ * Continuously outputs voltage over the serial line.
+ */
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+#include <avr/sleep.h>                           /* for ADC sleep mode */
+#include <math.h>                           /* for round() and floor() */
+
+#include "pinDefines.h"
+#include "USART.h"
+
+/* Note: This voltmeter is only as accurate as your reference voltage.
+ * If you want four digits of accuracy, need to measure your AVCC well.
+ * Measure either AVCC of the voltage on AREF and enter it here.
+*/
+#define REF_VCC 5.053
+                               /* measured division by voltage divider */
+#define VOLTAGE_DIV_FACTOR  3.114
+
+
+// -------- Functions --------- //
+void initADC(void) {
+  ADMUX |= (0b00001111 & PC5);                      /* set mux to ADC5 */
+  ADMUX |= (1 << REFS0);                  /* reference voltage on AVCC */
+  ADCSRA |= (1 << ADPS1) | (1 << ADPS2);    /* ADC clock prescaler /64 */
+  ADCSRA |= (1 << ADEN);                                 /* enable ADC */
+}
+
+void setupADCSleepmode(void) {
+  set_sleep_mode(SLEEP_MODE_ADC);            /* defined in avr/sleep.h */
+  ADCSRA |= (1 << ADIE);                       /* enable ADC interrupt */
+  sei();                                   /* enable global interrupts */
+}
+
+EMPTY_INTERRUPT(ADC_vect);
+
+uint16_t oversample16x(void) {
+  uint16_t oversampledValue = 0;
+  uint8_t i;
+  for (i = 0; i < 16; i++) {
+    sleep_mode();                   /* chip to sleep, takes ADC sample */
+    oversampledValue += ADC;                        /* add them up 16x */
+  }
+  return (oversampledValue >> 2);          /* divide back down by four */
+}
+
+void printFloat(float number) {
+  number = round(number * 100) / 100; /* round off to 2 decimal places */
+  transmitByte('0' + number / 10);                       /* tens place */
+  transmitByte('0' + number - 10 * floor(number / 10));        /* ones */
+  transmitByte('.');
+  transmitByte('0' + (number * 10) - floor(number) * 10);    /* tenths */
+                                                   /* hundredths place */
+  transmitByte('0' + (number * 100) - floor(number * 10) * 10);
+  printString("\r\n");
+}
+
+int main(void) {
+
+  float voltage;
+
+  // -------- Inits --------- //
+  initUSART();
+  printString("\r\nDigital Voltmeter\r\n\r\n");
+  initADC();
+  setupADCSleepmode();
+
+  // ------ Event loop ------ //
+
+  while (1) {
+
+    voltage = oversample16x() * VOLTAGE_DIV_FACTOR * REF_VCC / 4096;
+    printFloat(voltage);
+    /*  alternatively, just print it out:
+     *  printWord(voltage*100);
+     *  but then you have to remember the decimal place
+     */
+    _delay_ms(500);
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/Makefile b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/adsr.c b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/adsr.c
new file mode 100644
index 0000000..946adc2
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/adsr.c	
@@ -0,0 +1,86 @@
+/*
+   Direct-digital synthesis
+   ADSR Dynamic Volume Envelope Demo
+*/
+
+// ------- Preamble -------- //
+#include "adsr.h"             /* Defines, includes, and init functions */
+
+int main(void) {
+
+  // -------- Inits --------- //
+
+  uint16_t accumulator = 0;
+  uint8_t volume = 0;
+  uint16_t noteClock = 0;
+  uint16_t tuningWord = C1;
+
+  uint8_t waveStep;
+  int16_t mixer=0;
+  char serialInput;
+
+  clock_prescale_set(clock_div_1);                  /* CPU clock 8 MHz */
+  initTimer0();
+  initUSART();
+  printString("  Serial Synth\r\n");
+  printString("Notes: asdfghjkl;'\r\n");
+
+  SPEAKER_DDR |= (1 << SPEAKER);                     /* speaker output */
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    // Set PWM output
+    loop_until_bit_is_set(TIFR0, TOV0);    /* wait for timer0 overflow */
+    OCR0A = 128 + (uint8_t) mixer;
+    TIFR0 |= (1 << TOV0);                    /* reset the overflow bit */
+
+    // Update the DDS
+    accumulator += tuningWord;
+    waveStep = accumulator >> 8;
+    mixer = fullTriangle[waveStep] * volume;
+    mixer = mixer >> 5;
+
+                                  /* Input processed here: check USART */
+    if (bit_is_set(UCSR0A, RXC0)) {
+      serialInput = UDR0;                        /* read in from USART */
+      tuningWord = lookupPitch(serialInput);
+      noteClock = 1;
+    }
+
+                                          /* Dynamic Volume stuff here */
+    if (noteClock) {                   /* if noteClock already running */
+      noteClock++;
+      if (noteClock < ATTACK_TIME) {                         /* attack */
+                              /* wait until time to increase next step */
+        if (noteClock > ATTACK_RATE * volume) {
+          if (volume < 31) {
+            volume++;
+          }
+        }
+      }
+      else if (noteClock < DECAY_TIME) {                      /* decay */
+        if ((noteClock - ATTACK_TIME) >
+            (FULL_VOLUME - volume) * DECAY_RATE) {
+          if (volume > SUSTAIN_LEVEL) {
+            volume--;
+          }
+        }
+      }
+      else if (noteClock > RELEASE_TIME) {                  /* release */
+        if ((noteClock - RELEASE_TIME) >
+            (SUSTAIN_LEVEL - volume) * RELEASE_RATE) {
+          if (volume > 0) {
+            volume--;
+          }
+          else {
+            noteClock = 0;
+          }
+        }
+      }
+    }
+
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/adsr.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/adsr.h
new file mode 100644
index 0000000..24701ca
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/adsr.h	
@@ -0,0 +1,81 @@
+
+/*Include file for ADSR synth project. */
+
+#include <avr/io.h>		/* Defines pins, ports, etc */
+#include <util/delay.h>		/* Functions to waste time */
+#include <avr/power.h>
+#include <avr/interrupt.h>	
+#include "pinDefines.h"
+#include "macros.h"
+#include "scale.h"
+#include "fullSaw7.h"		/* a 7-harmonic bandlimited sawtooth */
+                   /* see generateWavetables.py if you're interested */
+#include "fullTriangle.h"
+#include "USART.h"
+
+#define FULL_VOLUME     31 	/* 5-bit volumes */
+
+// Default envelope values (slightly percussive)
+// Play around with these!  
+#define ATTACK_RATE    8	/* 0-255 */
+#define DECAY_RATE     120	/* 0-255 */
+#define SUSTAIN_LEVEL  25	/* 0-255 */
+#define SUSTAIN_TIME   4000	/* 0-65535 */
+#define RELEASE_RATE   200	/* 0-65535 */
+
+// Compute these constants
+#define ATTACK_TIME   ATTACK_RATE * FULL_VOLUME
+#define DECAY_TIME   (ATTACK_TIME + (FULL_VOLUME-SUSTAIN_LEVEL) * DECAY_RATE)
+#define RELEASE_TIME     DECAY_TIME + SUSTAIN_TIME
+
+// -------------- Init Routines --------------- //
+
+static inline void initTimer0(void){
+  set_bit(TCCR0A, COM0A1);	/* PWM output on OCR0A */
+  set_bit(SPEAKER_DDR, SPEAKER); /* enable output on pin */
+
+  set_bit(TCCR0A, WGM00);	/* Fast PWM mode */
+  set_bit(TCCR0A, WGM01);	/* Fast PWM mode, pt.2 */
+  
+  set_bit(TCCR0B, CS00);	/* Clock with /1 prescaler */
+}
+
+static inline void initLEDs(void){
+  uint8_t i;
+  LED_DDR = 0xff;	/* All LEDs for diagnostics */
+  for (i=0; i<8; i++){
+    set_bit(LED_PORT, i);
+    _delay_ms(100);
+    clear_bit(LED_PORT, i);
+  }
+}
+
+static inline uint16_t lookupPitch(char i){
+  switch(i){
+  case 'a':
+    return(G1);
+  case 's':
+    return(A1);
+  case 'd':
+    return(B1);
+  case 'f':
+    return(C2);
+  case 'g':
+    return(D2);
+  case 'h':
+    return(E2);
+  case 'j':
+    return(F2);
+  case 'k':
+    return(G2);
+  case 'l':
+    return(A2);
+  case ';':
+    return(B2);
+  case '\'':
+    return(C3);   
+  }	 
+  // Default value -- if press some other key
+  return(C1);
+}
+
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullSaw15.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullSaw15.h
new file mode 100644
index 0000000..69e64a3
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullSaw15.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw15[256] = {
+  0, 1, 3, 4, 5, 6, 7, 7,
+  7, 7, 7, 7, 8, 9, 10, 12,
+  13, 15, 17, 18, 20, 21, 21, 22,
+  22, 22, 22, 22, 22, 23, 24, 25,
+  27, 29, 31, 33, 34, 35, 36, 36,
+  36, 36, 36, 36, 36, 37, 38, 39,
+  41, 43, 45, 47, 48, 50, 51, 51,
+  51, 51, 51, 51, 51, 51, 52, 53,
+  54, 56, 58, 61, 63, 64, 66, 66,
+  67, 66, 66, 65, 65, 65, 65, 66,
+  68, 70, 72, 75, 77, 79, 81, 82,
+  82, 82, 81, 80, 79, 78, 78, 78,
+  80, 82, 85, 88, 92, 95, 97, 99,
+  100, 99, 98, 95, 93, 90, 88, 88,
+  89, 91, 96, 101, 108, 115, 121, 125,
+  127, 125, 119, 108, 93, 74, 51, 26,
+  0, -27, -52, -75, -94, -109, -120, -126,
+  -128, -126, -122, -116, -109, -102, -97, -92,
+  -90, -89, -89, -91, -94, -96, -99, -100,
+  -101, -100, -98, -96, -93, -89, -86, -83,
+  -81, -79, -79, -79, -80, -81, -82, -83,
+  -83, -83, -82, -80, -78, -76, -73, -71,
+  -69, -67, -66, -66, -66, -66, -67, -67,
+  -68, -67, -67, -65, -64, -62, -59, -57,
+  -55, -54, -53, -52, -52, -52, -52, -52,
+  -52, -52, -52, -51, -49, -48, -46, -44,
+  -42, -40, -39, -38, -37, -37, -37, -37,
+  -37, -37, -37, -36, -35, -34, -32, -30,
+  -28, -26, -25, -24, -23, -23, -23, -23,
+  -23, -23, -22, -22, -21, -19, -18, -16,
+  -14, -13, -11, -10, -9, -8, -8, -8,
+  -8, -8, -8, -7, -6, -5, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullSaw3.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullSaw3.h
new file mode 100644
index 0000000..c0c1877
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullSaw3.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw3[256] = {
+  0, 2, 4, 6, 8, 10, 12, 14,
+  16, 18, 20, 22, 23, 25, 27, 28,
+  29, 31, 32, 33, 34, 35, 35, 36,
+  37, 37, 38, 38, 38, 38, 39, 39,
+  39, 39, 39, 38, 38, 38, 38, 38,
+  38, 38, 38, 38, 38, 38, 38, 38,
+  39, 39, 40, 40, 41, 42, 43, 44,
+  45, 46, 47, 49, 51, 52, 54, 56,
+  58, 61, 63, 65, 68, 70, 73, 76,
+  79, 81, 84, 87, 90, 93, 96, 98,
+  101, 104, 106, 109, 111, 114, 116, 118,
+  120, 121, 123, 124, 125, 126, 126, 127,
+  127, 127, 126, 126, 125, 124, 122, 120,
+  118, 116, 113, 110, 107, 104, 100, 96,
+  92, 87, 83, 78, 72, 67, 62, 56,
+  50, 44, 38, 32, 25, 19, 12, 6,
+  0, -7, -13, -20, -26, -33, -39, -45,
+  -51, -57, -63, -68, -73, -79, -84, -88,
+  -93, -97, -101, -105, -108, -111, -114, -117,
+  -119, -121, -123, -125, -126, -127, -127, -128,
+  -128, -128, -127, -127, -126, -125, -124, -122,
+  -121, -119, -117, -115, -112, -110, -107, -105,
+  -102, -99, -97, -94, -91, -88, -85, -82,
+  -80, -77, -74, -71, -69, -66, -64, -62,
+  -59, -57, -55, -53, -52, -50, -48, -47,
+  -46, -45, -44, -43, -42, -41, -41, -40,
+  -40, -39, -39, -39, -39, -39, -39, -39,
+  -39, -39, -39, -39, -39, -39, -40, -40,
+  -40, -40, -40, -39, -39, -39, -39, -38,
+  -38, -37, -36, -36, -35, -34, -33, -32,
+  -30, -29, -28, -26, -24, -23, -21, -19,
+  -17, -15, -13, -11, -9, -7, -5, -3
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullSaw7.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullSaw7.h
new file mode 100644
index 0000000..ef38b9e
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullSaw7.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw7[256] = {
+  0, 1, 3, 5, 7, 8, 10, 11,
+  12, 13, 14, 15, 15, 15, 15, 16,
+  16, 16, 16, 16, 16, 16, 16, 17,
+  17, 18, 19, 20, 21, 23, 24, 26,
+  28, 30, 32, 34, 36, 38, 39, 41,
+  43, 44, 45, 46, 47, 47, 48, 48,
+  48, 48, 48, 48, 48, 47, 47, 47,
+  47, 47, 48, 49, 50, 51, 52, 54,
+  55, 57, 60, 62, 64, 66, 69, 71,
+  73, 75, 77, 79, 80, 81, 82, 82,
+  82, 82, 82, 81, 80, 80, 79, 78,
+  77, 76, 75, 75, 75, 76, 76, 78,
+  79, 81, 84, 87, 90, 94, 98, 102,
+  106, 110, 114, 117, 121, 123, 125, 127,
+  127, 127, 125, 122, 119, 114, 108, 101,
+  93, 84, 74, 63, 51, 39, 26, 13,
+  0, -14, -27, -40, -52, -64, -75, -85,
+  -94, -102, -109, -115, -120, -123, -126, -128,
+  -128, -128, -126, -124, -122, -118, -115, -111,
+  -107, -103, -99, -95, -91, -88, -85, -82,
+  -80, -79, -77, -77, -76, -76, -76, -77,
+  -78, -79, -80, -81, -81, -82, -83, -83,
+  -83, -83, -83, -82, -81, -80, -78, -76,
+  -74, -72, -70, -67, -65, -63, -61, -58,
+  -56, -55, -53, -52, -51, -50, -49, -48,
+  -48, -48, -48, -48, -49, -49, -49, -49,
+  -49, -49, -49, -48, -48, -47, -46, -45,
+  -44, -42, -40, -39, -37, -35, -33, -31,
+  -29, -27, -25, -24, -22, -21, -20, -19,
+  -18, -18, -17, -17, -17, -17, -17, -17,
+  -17, -17, -16, -16, -16, -16, -15, -14,
+  -13, -12, -11, -9, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullTri15.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullTri15.h
new file mode 100644
index 0000000..e227e64
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullTri15.h	
@@ -0,0 +1,34 @@
+int8_t fullTri15[256] = {
+  0, 1, 3, 4, 5, 6, 7, 7,
+  7, 7, 7, 7, 8, 9, 10, 12,
+  13, 15, 17, 18, 20, 21, 21, 22,
+  22, 22, 22, 22, 22, 23, 24, 25,
+  27, 29, 31, 33, 34, 35, 36, 36,
+  36, 36, 36, 36, 36, 37, 38, 39,
+  41, 43, 45, 47, 48, 50, 51, 51,
+  51, 51, 51, 51, 51, 51, 52, 53,
+  54, 56, 58, 61, 63, 64, 66, 66,
+  67, 66, 66, 65, 65, 65, 65, 66,
+  68, 70, 72, 75, 77, 79, 81, 82,
+  82, 82, 81, 80, 79, 78, 78, 78,
+  80, 82, 85, 88, 92, 95, 97, 99,
+  100, 99, 98, 95, 93, 90, 88, 88,
+  89, 91, 96, 101, 108, 115, 121, 125,
+  127, 125, 119, 108, 93, 74, 51, 26,
+  0, -27, -52, -75, -94, -109, -120, -126,
+  -128, -126, -122, -116, -109, -102, -97, -92,
+  -90, -89, -89, -91, -94, -96, -99, -100,
+  -101, -100, -98, -96, -93, -89, -86, -83,
+  -81, -79, -79, -79, -80, -81, -82, -83,
+  -83, -83, -82, -80, -78, -76, -73, -71,
+  -69, -67, -66, -66, -66, -66, -67, -67,
+  -68, -67, -67, -65, -64, -62, -59, -57,
+  -55, -54, -53, -52, -52, -52, -52, -52,
+  -52, -52, -52, -51, -49, -48, -46, -44,
+  -42, -40, -39, -38, -37, -37, -37, -37,
+  -37, -37, -37, -36, -35, -34, -32, -30,
+  -28, -26, -25, -24, -23, -23, -23, -23,
+  -23, -23, -22, -22, -21, -19, -18, -16,
+  -14, -13, -11, -10, -9, -8, -8, -8,
+  -8, -8, -8, -7, -6, -5, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullTri3.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullTri3.h
new file mode 100644
index 0000000..236e937
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullTri3.h	
@@ -0,0 +1,34 @@
+int8_t fullTri3[256] = {
+  0, 2, 4, 6, 8, 10, 12, 14,
+  16, 18, 20, 22, 23, 25, 27, 28,
+  29, 31, 32, 33, 34, 35, 35, 36,
+  37, 37, 38, 38, 38, 38, 39, 39,
+  39, 39, 39, 38, 38, 38, 38, 38,
+  38, 38, 38, 38, 38, 38, 38, 38,
+  39, 39, 40, 40, 41, 42, 43, 44,
+  45, 46, 47, 49, 51, 52, 54, 56,
+  58, 61, 63, 65, 68, 70, 73, 76,
+  79, 81, 84, 87, 90, 93, 96, 98,
+  101, 104, 106, 109, 111, 114, 116, 118,
+  120, 121, 123, 124, 125, 126, 126, 127,
+  127, 127, 126, 126, 125, 124, 122, 120,
+  118, 116, 113, 110, 107, 104, 100, 96,
+  92, 87, 83, 78, 72, 67, 62, 56,
+  50, 44, 38, 32, 25, 19, 12, 6,
+  0, -7, -13, -20, -26, -33, -39, -45,
+  -51, -57, -63, -68, -73, -79, -84, -88,
+  -93, -97, -101, -105, -108, -111, -114, -117,
+  -119, -121, -123, -125, -126, -127, -127, -128,
+  -128, -128, -127, -127, -126, -125, -124, -122,
+  -121, -119, -117, -115, -112, -110, -107, -105,
+  -102, -99, -97, -94, -91, -88, -85, -82,
+  -80, -77, -74, -71, -69, -66, -64, -62,
+  -59, -57, -55, -53, -52, -50, -48, -47,
+  -46, -45, -44, -43, -42, -41, -41, -40,
+  -40, -39, -39, -39, -39, -39, -39, -39,
+  -39, -39, -39, -39, -39, -39, -40, -40,
+  -40, -40, -40, -39, -39, -39, -39, -38,
+  -38, -37, -36, -36, -35, -34, -33, -32,
+  -30, -29, -28, -26, -24, -23, -21, -19,
+  -17, -15, -13, -11, -9, -7, -5, -3
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullTri7.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullTri7.h
new file mode 100644
index 0000000..ed0af55
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullTri7.h	
@@ -0,0 +1,34 @@
+int8_t fullTri7[256] = {
+  0, 1, 3, 5, 7, 8, 10, 11,
+  12, 13, 14, 15, 15, 15, 15, 16,
+  16, 16, 16, 16, 16, 16, 16, 17,
+  17, 18, 19, 20, 21, 23, 24, 26,
+  28, 30, 32, 34, 36, 38, 39, 41,
+  43, 44, 45, 46, 47, 47, 48, 48,
+  48, 48, 48, 48, 48, 47, 47, 47,
+  47, 47, 48, 49, 50, 51, 52, 54,
+  55, 57, 60, 62, 64, 66, 69, 71,
+  73, 75, 77, 79, 80, 81, 82, 82,
+  82, 82, 82, 81, 80, 80, 79, 78,
+  77, 76, 75, 75, 75, 76, 76, 78,
+  79, 81, 84, 87, 90, 94, 98, 102,
+  106, 110, 114, 117, 121, 123, 125, 127,
+  127, 127, 125, 122, 119, 114, 108, 101,
+  93, 84, 74, 63, 51, 39, 26, 13,
+  0, -14, -27, -40, -52, -64, -75, -85,
+  -94, -102, -109, -115, -120, -123, -126, -128,
+  -128, -128, -126, -124, -122, -118, -115, -111,
+  -107, -103, -99, -95, -91, -88, -85, -82,
+  -80, -79, -77, -77, -76, -76, -76, -77,
+  -78, -79, -80, -81, -81, -82, -83, -83,
+  -83, -83, -83, -82, -81, -80, -78, -76,
+  -74, -72, -70, -67, -65, -63, -61, -58,
+  -56, -55, -53, -52, -51, -50, -49, -48,
+  -48, -48, -48, -48, -49, -49, -49, -49,
+  -49, -49, -49, -48, -48, -47, -46, -45,
+  -44, -42, -40, -39, -37, -35, -33, -31,
+  -29, -27, -25, -24, -22, -21, -20, -19,
+  -18, -18, -17, -17, -17, -17, -17, -17,
+  -17, -17, -16, -16, -16, -16, -15, -14,
+  -13, -12, -11, -9, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullTriangle.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullTriangle.h
new file mode 100644
index 0000000..04cb022
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/fullTriangle.h	
@@ -0,0 +1,34 @@
+int8_t fullTriangle[256] = {
+  0, 1, 3, 5, 7, 9, 11, 13,
+  15, 17, 19, 21, 23, 25, 27, 29,
+  31, 33, 35, 37, 39, 41, 43, 45,
+  47, 49, 51, 53, 55, 57, 59, 61,
+  63, 65, 67, 69, 71, 73, 75, 77,
+  79, 81, 83, 85, 87, 89, 91, 93,
+  95, 97, 99, 101, 103, 105, 107, 109,
+  111, 113, 115, 117, 119, 121, 123, 125,
+  127, 125, 123, 121, 119, 117, 115, 113,
+  111, 109, 107, 105, 103, 101, 99, 97,
+  95, 93, 91, 89, 87, 85, 83, 81,
+  79, 77, 75, 73, 71, 69, 67, 65,
+  63, 61, 59, 57, 55, 53, 51, 49,
+  47, 45, 43, 41, 39, 37, 35, 33,
+  31, 29, 27, 25, 23, 21, 19, 17,
+  15, 13, 11, 9, 7, 5, 3, 1,
+  0, -2, -4, -6, -8, -10, -12, -14,
+  -16, -18, -20, -22, -24, -26, -28, -30,
+  -32, -34, -36, -38, -40, -42, -44, -46,
+  -48, -50, -52, -54, -56, -58, -60, -62,
+  -64, -66, -68, -70, -72, -74, -76, -78,
+  -80, -82, -84, -86, -88, -90, -92, -94,
+  -96, -98, -100, -102, -104, -106, -108, -110,
+  -112, -114, -116, -118, -120, -122, -124, -126,
+  -128, -126, -124, -122, -120, -118, -116, -114,
+  -112, -110, -108, -106, -104, -102, -100, -98,
+  -96, -94, -92, -90, -88, -86, -84, -82,
+  -80, -78, -76, -74, -72, -70, -68, -66,
+  -64, -62, -60, -58, -56, -54, -52, -50,
+  -48, -46, -44, -42, -40, -38, -36, -34,
+  -32, -30, -28, -26, -24, -22, -20, -18,
+  -16, -14, -12, -10, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/generateScale.py b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/generateScale.py
new file mode 100644
index 0000000..8e7dc3a
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/generateScale.py	
@@ -0,0 +1,44 @@
+
+## File to generate equal-tempered scale for use with DDS
+
+
+import math                     # because music is math
+
+scale = ['C', 'Cx', 'D', 'Dx', 'E', 'F', 'Fx', 'G', 'Gx', 'A', 'Ax', 'B']
+
+def octave(baseLength):
+    pitches = [baseLength * math.exp(x*math.log(2)/12) for x in range(0, 12)]
+    pitches = [int(round(x)) for x in pitches]
+    return( zip(scale, pitches) )
+
+
+def writeScaleHeader(basePitch, octaves, filename="scale.h"):
+    outfile = open(filename, "w")
+    outfile.write('''/*
+
+    Scales for use with DDS synthesis.  
+
+    Aimed roughly at having A2 be at 440Hz, 
+    when the chip is clocked at 8MHz and
+    using 8-bit resolution on the PWM.
+
+    Tune it by tweaking basePitch.
+
+    */
+
+    ''')
+    for i in range(0, octaves):
+        for note, pitch in octave(basePitch * 2**i):
+            if pitch < 30000:
+                noteString = note + str(i)
+                print("#define  {:<5}{:>6}").format(noteString, pitch)
+                outfile.write("#define  {:<5}{:>6}\n".format(noteString, pitch))
+    outfile.close()
+
+######################################################################
+
+if __name__ == "__main__":
+    
+    writeScaleHeader(basePitch=130, octaves=5)
+
+
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/generateWavetables.py b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/generateWavetables.py
new file mode 100644
index 0000000..905593f
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/generateWavetables.py	
@@ -0,0 +1,101 @@
+## This file generates headers with lookup tables for various waveforms
+## Add your own.
+
+import math
+
+def phaseSteps(maxPhase, length=256):
+    steps = range(0, length) 
+    steps = [1.0*x/length * 2.0*math.pi * (maxPhase/360.0) for x in steps]
+    return(steps)
+
+def scaleAndRound(data, scale=255, signedInt=True):
+    data = [0.0+x-min(data) for x in data]
+    data = [1.0*x/max(data)*scale for x in data]
+    data = [int(round(x)) for x in data]
+    if signedInt:
+        data = [x-(scale+1)/2 for x in data]
+    return(data)
+
+def makeSin(maxPhase, length=256):
+    sinus = [math.sin(x) for x in phaseSteps(maxPhase, length)]
+    return(sinus)
+
+def prettyPrint(data, perLine = 8):
+    outString = ""
+    for i in range(len(data) / perLine):
+        strings = [str(x) for x in data[perLine*i:(perLine*i+perLine)]]
+        outString += "\t" + ", ".join(strings) + ",\n"
+    outString = outString[:-2] + "\n" # drop the final comma
+    return(outString)
+
+def writeHeader(fileName, dataName, data, signedInt=True):
+    outfile = open(fileName, "w")
+    if signedInt:
+        outfile.write("int8_t {}[{:d}] = {{ \n".format(dataName, len(data)))
+    else:
+        outfile.write("uint8_t {}[{:d}] = {{ \n".format(dataName, len(data)))
+    outfile.write(prettyPrint(data))
+    outfile.write("};\n")
+    outfile.close()
+
+def bandlimitedSawtooth(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    sign = 1.0
+    for k in range(1, numberPartials+1):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] += sign * math.sin(phases[i]) / k
+        sign = sign * -1
+    return(wave)
+
+def bandlimitedSquare(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    for k in range(1, numberPartials*2, 2):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] +=  math.sin(phases[i]) / k
+    return(wave)
+
+def bandlimitedTriangle(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    sign = 1.0
+    for k in range(1, numberPartials*2, 2):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] += sign * math.sin(phases[i]) / k**2
+        sign = sign * -1
+    return(wave)
+
+
+
+if __name__ == "__main__":
+    
+    ## Full-waves, full 256 bytes, 0-255 range
+    writeHeader("fullSine.h", 'fullSine', scaleAndRound(makeSin(360)))
+
+    triangleWave = range(0,64)
+    triangleWave.extend(range(64, -64, -1))
+    triangleWave.extend(range(-64, 0, 1))
+    triangleWave = scaleAndRound(triangleWave)
+    writeHeader("fullTriangle.h", 'fullTriangle', triangleWave)
+
+    for numberFrequencies in [3,7,15]:
+        saw = scaleAndRound(bandlimitedSawtooth(360, numberFrequencies))
+        writeHeader("fullSaw{}.h".format(numberFrequencies), 
+                    'fullSaw{}'.format(numberFrequencies), saw)
+        tri = scaleAndRound(bandlimitedTriangle(360, numberFrequencies))
+        writeHeader("fullTri{}.h".format(numberFrequencies), 
+                    'fullTri{}'.format(numberFrequencies), tri)
+        square = scaleAndRound(bandlimitedSquare(360, numberFrequencies))
+        writeHeader("fullSquare{}.h".format(numberFrequencies), 
+                    'fullSquare{}'.format(numberFrequencies), square)
+
+    ## Note that if you define / use too many different waveforms, 
+    ## and you don't store them in PROGMEM in your AVR C routines,
+    ## you might run the chip out of RAM, which causes strange and
+    ## nearly impossible-to-diagnose glitches.
+    
+    ## So here we're breaking each waveform up into its own include file.
+    ## There are ways of storing them all in program memory, and we'll
+    ##  see examples of that in later chapters.
+    
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/scale.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/scale.h
new file mode 100644
index 0000000..6b12c73
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/adsr/scale.h	
@@ -0,0 +1,72 @@
+/*
+
+Scales for use with DDS synthesis.
+
+Aimed roughly at having A2 be at 440Hz,
+when the chip is clocked at 8MHz and
+using 8-bit resolution on the PWM.
+
+Tune it if you'd like.
+
+*/
+
+#define  C0      130
+#define  Cx0     138
+#define  D0      146
+#define  Dx0     155
+#define  E0      164
+#define  F0      174
+#define  Fx0     184
+#define  G0      195
+#define  Gx0     206
+#define  A0      219
+#define  Ax0     232
+#define  B0      245
+#define  C1      260
+#define  Cx1     275
+#define  D1      292
+#define  Dx1     309
+#define  E1      328
+#define  F1      347
+#define  Fx1     368
+#define  G1      390
+#define  Gx1     413
+#define  A1      437
+#define  Ax1     463
+#define  B1      491
+#define  C2      520
+#define  Cx2     551
+#define  D2      584
+#define  Dx2     618
+#define  E2      655
+#define  F2      694
+#define  Fx2     735
+#define  G2      779
+#define  Gx2     825
+#define  A2      875
+#define  Ax2     927
+#define  B2      982
+#define  C3     1040
+#define  Cx3    1102
+#define  D3     1167
+#define  Dx3    1237
+#define  E3     1310
+#define  F3     1388
+#define  Fx3    1471
+#define  G3     1558
+#define  Gx3    1651
+#define  A3     1749
+#define  Ax3    1853
+#define  B3     1963
+#define  C4     2080
+#define  Cx4    2204
+#define  D4     2335
+#define  Dx4    2474
+#define  E4     2621
+#define  F4     2776
+#define  Fx4    2942
+#define  G4     3116
+#define  Gx4    3302
+#define  A4     3498
+#define  Ax4    3706
+#define  B4     3927
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/arpeggiator/Makefile b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/arpeggiator/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/arpeggiator/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/arpeggiator/arpeggiator.c b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/arpeggiator/arpeggiator.c
new file mode 100644
index 0000000..d714194
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/arpeggiator/arpeggiator.c	
@@ -0,0 +1,78 @@
+/* 
+ *  "Algorithmic Symphonies"
+ *  When you combine modula arithmetic with a counter variable, 
+ *   you can get sequences that sound like 4-bit chiptunes.
+ *  Note that we're just outputting numerical values
+ *   directly as a voltage.  
+ *  Play around with these formulas defined here, or see others
+ *  in the attached file "music_formula_collection.txt".
+ * */
+
+// ------- Preamble -------- //
+#include <avr/io.h>		/* Defines pins, ports, etc */
+#include <util/delay.h>		/* Functions to waste time */
+#include <avr/power.h>
+#include "pinDefines.h"
+#include "macros.h"
+
+static inline void initTimer0(void){
+
+  set_bit(TCCR0A, COM0A1);	/* PWM output on OCR0A */
+  set_bit(SPEAKER_DDR, SPEAKER); /* enable output on pin */
+  set_bit(TCCR0A, WGM00);	/* Fast PWM mode */
+  set_bit(TCCR0A, WGM01);	/* Fast PWM mode, pt.2 */
+  set_bit(TCCR0B, CS00);	/* Clock with /1 prescaler */
+}
+
+static inline void pollButton(void){
+  if (bit_is_clear(BUTTON_PIN, BUTTON)) {
+    set_bit(SPEAKER_DDR, SPEAKER); /* enable output on pin */
+    clear_bit(LED_PORT, LED0);
+  }
+  else {
+    clear_bit(SPEAKER_DDR, SPEAKER); /* disable output on pin */
+    set_bit(LED_PORT, LED0);
+  }
+}
+
+int main(void){
+  uint16_t t=0;  
+
+  // -------- Inits --------- //
+  clock_prescale_set(clock_div_1);                  /* CPU clock 8 MHz */
+  initTimer0();
+   
+  set_bit(BUTTON_PORT, BUTTON);	/* pullup on button */
+
+  set_bit(LED_DDR, LED0);	/* LED on for diagnostics */
+  set_bit(LED_PORT, LED0);
+  _delay_ms(100);
+  clear_bit(LED_PORT, LED0);
+   
+  set_bit(SPEAKER_DDR, SPEAKER);
+  OCR0A = 210;
+  // ------ Event loop ------ //
+  while(1){	
+    
+    t++;
+	OCR0A = (uint8_t) ((t<<1)^((t<<1)+(t>>7)&t>>12))|t>>(4-(1^7&(t>>19)))|t>>7; /* "crowd" */ 
+	// OCR0A = (uint8_t) t;		  /* sawtooth */
+	// OCR0A = (uint8_t) t * (t >> 8);	/* rising pitch + aliases all over */
+	// OCR0A = (uint8_t) t & (t >> 8);     /* arpeggios */
+	// OCR0A = (uint8_t) t*( 42 & t >> 10 );  
+	// OCR0A = (uint8_t)  t*(t>>((t>>9)|(t>>8))&(63&(t>>4))); /* space invaders vs pong */
+	// OCR0A = (uint8_t) t*(t>>8*((t>>15)|(t>>8))&(20|(t>>19)*5>>t|(t>>3)));
+	// OCR0A = (uint8_t) (t*5&t>>7)|(t*3&t>>10);
+	// OCR0A = (uint8_t) (t*9 & t>>4 | t* 5 & t>> 7 | t * 3 & t/1024)-1; 
+	// OCR0A = (uint8_t) (t>>5)|(t>>4)|((t%42)*(t>>4)|(0x15483113)-(t>>4))/(t>>16)^(t|(t>>4)); 
+	// OCR0A = (uint8_t) t*(( (t>>12) | (t>>8)) & (63 & (t>>4)) );		  /* glitchy */
+    pollButton();
+    _delay_us(124);		/* Aiming for 8kHz sample rate */
+    
+  } /* End event loop */
+  return 0;		      /* This line is never reached  */
+}
+
+
+
+
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/arpeggiator/music_formula_collection.txt b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/arpeggiator/music_formula_collection.txt
new file mode 100644
index 0000000..a5aa852
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/arpeggiator/music_formula_collection.txt	
@@ -0,0 +1,320 @@
+Collection of oneliner music formulas. Version 2011-10-18
+
+I've tried to collect all the formulas in the related threads etc.
+(excluding those that clearly sound like random first experiments or total
+crap; when several variants are available, i've chosen the shortest one)
+
+If you think I've missed something that should be here, please let me know.
+
+====== 1ST ITERATION ======
+
+// viznut 2011-09-18 http://www.youtube.com/watch?v=GtQdIYUtAHg
+t*(((t>>12)|(t>>8))&(63&(t>>4)))
+
+// tejeez 2011-09-18 http://www.youtube.com/watch?v=GtQdIYUtAHg
+(t*(t>>5|t>>8))>>(t>>16)
+
+// visy 2011-09-18 http://www.youtube.com/watch?v=GtQdIYUtAHg
+t*(((t>>9)|(t>>13))&(25&(t>>6)))
+
+// tejeez 2011-09-18 http://www.youtube.com/watch?v=GtQdIYUtAHg
+t*(((t>>11)&(t>>8))&(123&(t>>3)))
+
+// visy 2011-09-18 http://www.youtube.com/watch?v=GtQdIYUtAHg
+t*(t>>8*((t>>15)|(t>>8))&(20|(t>>19)*5>>t|(t>>3)))
+
+// tejeez 2011-09-18 http://www.youtube.com/watch?v=GtQdIYUtAHg
+(-t&4095)*(255&t*(t&(t>>13)))>>12)+(127&t*(234&t>>8&t>>3)>>(3&t>>14))
+
+// visy 2011-09-18 http://www.youtube.com/watch?v=GtQdIYUtAHg "Space Invaders vs Pong"
+t*(t>>((t>>9)|(t>>8))&(63&(t>>4)))
+
+====== 2ND ITERATION ======
+
+// viznut 2011-09-30 http://www.youtube.com/watch?v=qlrs2Vorw2Y
+(t>>6|t|t>>(t>>16))*10+((t>>11)&7)
+
+// pyryp 2011-09-30 http://www.youtube.com/watch?v=qlrs2Vorw2Y
+v=(v>>1)+(v>>4)+t*(((t>>16)|(t>>6))&(69&(t>>9)))
+
+// red- 2011-09-30 http://www.youtube.com/watch?v=qlrs2Vorw2Y
+(t|(t>>9|t>>7))*t&(t>>11|t>>9)
+
+// miiro 2011-09-30 http://www.youtube.com/watch?v=qlrs2Vorw2Y
+t*5&(t>>7)|t*3&(t*4>>10)
+
+// viznut 2011-09-30 http://www.youtube.com/watch?v=qlrs2Vorw2Y (xpansive+varjohukka)
+(t>>7|t|t>>6)*10+4*(t&t>>13|t>>6)
+
+// skurk+raer 2011-09-30 http://www.youtube.com/watch?v=qlrs2Vorw2Y
+((t&4096)?((t*(t^t%255)|(t>>4))>>1):(t>>3)|((t&8192)?t<<2:t))
+
+// xpansive 2011-09-29 http://pouet.net/topic.php?which=8357&page=2 "Lost in Space"
+((t*(t>>8|t>>9)&46&t>>8))^(t&t>>13|t>>6)
+
+====== 3RD ITERATION ======
+
+// viznut 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o
+(t*5&t>>7)|(t*3&t>>10)
+
+// bst 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o
+(int)(t/1e7*t*t+t)%127|t>>4|t>>5|t%127+(t>>16)|t
+
+// kb 2011-10-04 http://pouet.net/topic.php?which=8357&page=8 44kHz
+((t/2*(15&(0x234568a0>>(t>>8&28))))|t/2>>(t>>11)^t>>12)+(t/16&t&24)
+
+// viznut 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o  
+(t&t%255)-(t*3&t>>13&t>>6)
+
+// droid 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o
+t>>4|t&((t>>5)/(t>>7-(t>>15)&-t>>7-(t>>15)))
+
+// ryg 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o 44.1 kHz
+((t*("36364689"[t>>13&7]&15))/12&128)+(((((t>>12)^(t>>12)-2)%11*t)/4|t>>13)&127)
+
+// stephth 2011-10-03 http://news.ycombinator.com/item?id=3063359
+(t*9&t>>4|t*5&t>>7|t*3&t/1024)-1
+
+// viznut+oasiz 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o "Dante's Inferno" short version
+((t*(t>>12)&(201*t/100)&(199*t/100))&(t*(t>>14)&(t*301/100)&(t*399/100)))+((t*(t>>16)&(t*202/100)&(t*198/100))-(t*(t>>17)&(t*302/100)&(t*298/100)))
+
+// viznut+oasiz 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o "Dante's Inferno" long version
+((t*(t>>12)&(201*t/100)&(199*t/100))&(t*(t>>14)&(t*301/100)&(t*399/100)))+((t*(t>>16)&(t*202/100)&(t*198/100))-(t*(t>>18)&(t*302/100)&(t*298/100)))
+
+// mu6k 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o "Long-line Theory", Chaos Theory cover, optimized by ryg, p01 et al., JS-only
+w=t>>9,k=32,m=2048,a=1-t/m%1,d=(14*t*t^t)%m*a,y=[3,3,4.7,2][p=w/k&3]*t/4,h="IQNNNN!!]]!Q!IW]WQNN??!!W]WQNNN?".charCodeAt(w/2&15|p/3<<4)/33*t-t,s=y*.98%80+y%80+(w>>7&&a*((5*t%m*a&128)*(0x53232323>>w/4&1)+(d&127)*(0xa444c444>>w/4&1)*1.5+(d*w&1)+(h%k+h*1.99%k+h*.49%k+h*.97%k-64)*(4-a-a))),s*s>>14?127:s
+
+// 216 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o
+t*(t^t+(t>>15|1)^(t-1280^t)>>10)
+
+// mu6k http://www.youtube.com/watch?v=tCRPUv8V22o 32.0 kHz
+(3e3/(y=t&16383)&1)*35 +(x=t*"6689"[t>>16&3]/24&127)*y/4e4 +((t>>8^t>>10|t>>14|x)&63)
+
+====== 0XA VIDEOS ======
+
+// harism 2011-10-09 http://0xa.kuri.mu/2011/10/09/bitop-videos/
+((t>>1%128)+20)*3*t>>14*t>>18 
+
+// tangent128 2011-10-09 http://0xa.kuri.mu/2011/10/09/bitop-videos/
+t*(((t>>9)&10)|((t>>11)&24)^((t>>10)&15&(t>>15)))
+
+// ultrageranium 2011-10-12 http://0xa.kuri.mu/2011/10/09/bitop-videos/
+(t*t/256)&(t>>((t/1024)%16))^t%64*(0xC0D3DE4D69>>(t>>9&30)&t%32)*t>>18
+
+====== ALL COLLECTED FORMULAS (length order) ======
+
+// trivial minimum: plain sawtooth
+t
+
+// minimal sierpinski harmony
+t&t>>8
+
+// "the 42 melody", separately discovered by several people on irc etc
+t*(42&t>>10)
+
+// danharaj 2011-10-03 http://www.reddit.com/r/programming/comments/kyj77/algorithmic_symphonies_from_one_line_of_code_how/ "fractal trees", 216's version
+t|t%255|t%257
+
+// droid 2011-10-05 http://pouet.net/topic.php?which=8357&page=10
+t>>6&1?t>>5:-t>>4
+
+// Niklas_Roy 2011-10-14 http://countercomplex.blogspot.com/2011/10/algorithmic-symphonies-from-one-line-of.html
+t*(t>>9|t>>13)&16
+
+// krcko 2011-10-04 http://rafforum.rs/index.php/topic,123.0.html
+(t&t>>12)*(t>>4|t>>8)
+
+// viznut 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o
+(t*5&t>>7)|(t*3&t>>10)
+
+// tejeez 2011-09-18 http://www.youtube.com/watch?v=GtQdIYUtAHg
+(t*(t>>5|t>>8))>>(t>>16)
+
+// miiro 2011-09-30 http://www.youtube.com/watch?v=qlrs2Vorw2Y
+t*5&(t>>7)|t*3&(t*4>>10)
+
+// robert 2011-10-11 http://countercomplex.blogspot.com/2011/10/algorithmic-symphonies-from-one-line-of.html
+(t>>13|t%24)&(t>>7|t%19)
+
+// Niklas_Roy 2011-10-14 http://countercomplex.blogspot.com/2011/10/algorithmic-symphonies-from-one-line-of.html
+(t*((t>>9|t>>13)&15))&129
+
+// viznut 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o  
+(t&t%255)-(t*3&t>>13&t>>6)
+
+// krcko 2011-10-04 http://rafforum.rs/index.php/topic,123.0.html
+(t&t>>12)*(t>>4|t>>8)^t>>6
+
+// blueberry 2011-10-05 http://pouet.net/topic.php?which=8357&page=12 11kHz
+t*(((t>>9)^((t>>9)-1)^1)%13)
+
+// rrola 2011-10-04 http://pouet.net/topic.php?which=8357&page=9 optimized by ryg
+t*(0xCA98>>(t>>9&14)&15)|t>>8
+
+// tonic 2011-10-01 http://pouet.net/topic.php?which=8357&page=5 "mr. arpeggiator playing a solo"
+(t/8)>>(t>>9)*t/((t>>14&3)+4)
+
+// FreeFull 2011-10-12 http://countercomplex.blogspot.com/2011/10/algorithmic-symphonies-from-one-line-of.html
+(~t/100|(t*3))^(t*3&(t>>5))&t
+
+// red- 2011-09-30 http://www.youtube.com/watch?v=qlrs2Vorw2Y
+(t|(t>>9|t>>7))*t&(t>>11|t>>9)
+
+// harism 2011-10-09 http://0xa.kuri.mu/2011/10/09/bitop-videos/
+((t>>1%128)+20)*3*t>>14*t>>18 
+
+// droid 2011-10-04 http://pouet.net/topic.php?which=8357&page=9
+t&(sin(t&t&3)*t>>5)/(t>>3&t>>6)
+
+// viznut 2011-09-18 http://www.youtube.com/watch?v=GtQdIYUtAHg
+t*(((t>>12)|(t>>8))&(63&(t>>4)))
+
+// visy 2011-09-18 http://www.youtube.com/watch?v=GtQdIYUtAHg
+t*(((t>>9)|(t>>13))&(25&(t>>6)))
+
+// 216 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o
+t*(t^t+(t>>15|1)^(t-1280^t)>>10)
+
+// tejeez 2011-09-18 http://www.youtube.com/watch?v=GtQdIYUtAHg
+t*(((t>>11)&(t>>8))&(123&(t>>3)))
+
+// viznut 2011-09-30 http://www.youtube.com/watch?v=qlrs2Vorw2Y (xpansive+varjohukka)
+(t>>7|t|t>>6)*10+4*(t&t>>13|t>>6)
+
+// stephth 2011-10-03 http://news.ycombinator.com/item?id=3063359
+(t*9&t>>4|t*5&t>>7|t*3&t/1024)-1
+
+// visy 2011-09-18 http://www.youtube.com/watch?v=GtQdIYUtAHg "Space Invaders vs Pong"
+t*(t>>((t>>9)|(t>>8))&(63&(t>>4)))
+
+// viznut 2011-09-30 http://www.youtube.com/watch?v=qlrs2Vorw2Y
+(t>>6|t|t>>(t>>16))*10+((t>>11)&7)
+
+// yumeji 2011-10-04 http://pouet.net/topic.php?which=8357&page=9
+(t>>1)*(0xbad2dea1>>(t>>13)&3)|t>>5
+
+// ryg 2011-10-04 http://pouet.net/topic.php?which=8357&page=8
+(t>>4)*(13&(0x8898a989>>(t>>11&30)))
+
+// marmakoide 2011-10-04 http://pouet.net/topic.php?which=8357&page=8
+(t>>(t&7))|(t<<(t&42))|(t>>7)|(t<<5)
+
+// robert 2011-10-11 http://countercomplex.blogspot.com/2011/10/algorithmic-symphonies-from-one-line-of.html
+(t>>7|t%45)&(t>>8|t%35)&(t>>11|t%20)
+
+// lucasvb 2011-10-03 http://www.reddit.com/r/programming/comments/kyj77/algorithmic_symphonies_from_one_line_of_code_how/
+(t>>6|t<<1)+(t>>5|t<<3|t>>3)|t>>2|t<<1
+
+// bear @ celephais
+t+(t&t^t>>6)-t*((t>>9)&(t%16?2:6)&t>>9)
+
+// xpansive 2011-09-29 http://pouet.net/topic.php?which=8357&page=2 "Lost in Space"
+((t*(t>>8|t>>9)&46&t>>8))^(t&t>>13|t>>6)
+
+// rez 2011-10-05 http://pouet.net/topic.php?which=8357&page=11 js-only optimized by ryg
+t*(1+"4451"[t>>13&3]/10)&t>>9+(t*0.003&3)
+
+// marmakoide 2011-10-03 http://pouet.net/topic.php?which=8357&page=7 "Lemmings March"
+(t>>5)|(t<<4)|((t&1023)^1981)|((t-67)>>4)
+
+// droid 2011-10-04 http://pouet.net/topic.php?which=8357&page=9
+t>>4|t&(t>>5)/(t>>7-(t>>15)&-t>>7-(t>>15))
+
+// rez 2011-10-03 http://pouet.net/topic.php?which=8357&page=7
+t*(t/256)-t*(t/255)+t*(t>>5|t>>6|t<<2&t>>1)
+
+// viznut 2011-10-06 #countercomplex "moon scanner generalization", based on jaffa's formula
+((t>>5&t)-(t>>5)+(t>>5&t))+(t*((t>>14)&14))
+
+// viznut 2011-10-04 http://pouet.net/topic.php?which=8357&page=9
+(t*((3+(1^t>>10&5))*(5+(3&t>>14))))>>(t>>8&3)
+
+// droid 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o
+t>>4|t&DIV((t>>5),(t>>7-(t>>15)&-t>>7-(t>>15)))
+
+// pyryp 2011-09-30 http://www.youtube.com/watch?v=qlrs2Vorw2Y
+v=(v>>1)+(v>>4)+t*(((t>>16)|(t>>6))&(69&(t>>9)))
+
+// bst 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o
+(int)(t/1e7*t*t+t)%127|t>>4|t>>5|t%127+(t>>16)|t
+
+// tangent128 2011-10-09 http://0xa.kuri.mu/2011/10/09/bitop-videos/
+t*(((t>>9)&10)|((t>>11)&24)^((t>>10)&15&(t>>15)))
+
+// tejeez 2011-10-05 #countercomplex
+(~t>>2)*((127&t*(7&t>>10))<(245&t*(2+(5&t>>14))))
+
+// lokori 2011-10-04 #suomiscene
+(t+(t>>2)|(t>>5))+(t>>3)|((t>>13)|(t>>7)|(t>>11))
+
+// visy 2011-09-18 http://www.youtube.com/watch?v=GtQdIYUtAHg
+t*(t>>8*((t>>15)|(t>>8))&(20|(t>>19)*5>>t|(t>>3)))
+
+// Aaron_Krister_Johnson 2011-10-14 http://countercomplex.blogspot.com/2011/10/algorithmic-symphonies-from-one-line-of.html
+(t>>4)|(t%10)|(((t%101)|(t>>14))&((t>>7)|(t*t%17)))
+
+// jounim 2011-10-04 #suomiscene
+((t&((t>>5)))+(t|((t>>7))))&(t>>6)|(t>>5)&(t*(t>>7))
+
+// spikey 2011-10-04 #suomiscene based on jounim's formula
+((t&((t>>23)))+(t|(t>>2)))&(t>>3)|(t>>5)&(t*(t>>7))
+
+// akx 2011-10-05 http://twitter.com/#!/akx
+(((((t*((t>>9|t>>13)&15))&255/15)*9)%(1<<7))<<2)%6<<4
+
+// bst 2011-10-05 http://pouet.net/topic.php?which=8357&page=10
+((t%42)*(t>>4)|(0x15483113)-(t>>4))/(t>>16)^(t|(t>>4))
+
+// skurk 2011-10-04 http://pouet.net/topic.php?which=8357&page=8
+t*(t>>((t&4096)?((t*t)/4096):(t/4096)))|(t<<(t/256))|(t>>4)
+
+// skurk+raer 2011-09-30 http://www.youtube.com/watch?v=qlrs2Vorw2Y
+((t&4096)?((t*(t^t%255)|(t>>4))>>1):(t>>3)|((t&8192)?t<<2:t))
+
+// yumeji 2011-10-06 http://pouet.net/topic.php?which=8357&page=12 "badbeats & safe"
+t*((0xbadbea75>>((t>>12)&30)&3)*0.25*(0x5afe5>>((t>>16)&28)&3))
+
+// bst 2011-10-11 http://pouet.net/topic.php?which=8357&page=18
+t>>16|((t>>4)%16)|((t>>4)%192)|(t*t%64)|(t*t%96)|(t>>16)*(t|t>>5)
+
+// bear @ celephais
+t>>6^t&37|t+(t^t>>11)-t*((t%24?2:6)&t>>11)^t<<1&(t&598?t>>4:t>>10) 
+
+// kb 2011-10-04 http://pouet.net/topic.php?which=8357&page=8 44kHz
+((t/2*(15&(0x234568a0>>(t>>8&28))))|t/2>>(t>>11)^t>>12)+(t/16&t&24)
+
+// bst 2011-10-05 http://pouet.net/topic.php?which=8357&page=12
+(t>>5)|(t>>4)|((t%42)*(t>>4)|(0x15483113)-(t>>4))/(t>>16)^(t|(t>>4))
+
+// tejeez 2011-09-18 http://www.youtube.com/watch?v=GtQdIYUtAHg
+(-t&4095)*(255&t*(t&(t>>13)))>>12)+(127&t*(234&t>>8&t>>3)>>(3&t>>14))
+
+// ultrageranium 2011-10-12 http://0xa.kuri.mu/2011/10/09/bitop-videos/
+(t*t/256)&(t>>((t/1024)%16))^t%64*(0xC0D3DE4D69>>(t>>9&30)&t%32)*t>>18
+
+// visy 2011-10-06 http://pouet.net/topic.php?which=8357&page=13
+(t%25-(t>>2|t*15|t%227)-t>>3)|((t>>5)&(t<<5)*1663|(t>>3)%1544)/(t%17|t%2048)
+
+// ryg 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o 44.1 kHz
+((t*("36364689"[t>>13&7]&15))/12&128)+(((((t>>12)^(t>>12)-2)%11*t)/4|t>>13)&127)
+
+// mu6k http://www.youtube.com/watch?v=tCRPUv8V22o 32.0 kHz
+(3e3/(y=t&16383)&1)*35 +(x=t*"6689"[t>>16&3]/24&127)*y/4e4 +((t>>8^t>>10|t>>14|x)&63)
+
+// Ola 2011-10-11 http://countercomplex.blogspot.com/2011/10/algorithmic-symphonies-from-one-line-of.html
+((1-(((t+10)>>((t>>9)&((t>>14))))&(t>>4&-2)))*2)*(((t>>10)^((t+((t>>6)&127))>>10))&1)*32+128
+
+// raer 2011-10-07 http://pouet.net/topic.php?which=8357&page=16 stereo 11kHz
+L: ((t&4096)?((t*(t^t%255)|(t>>4))>>1):(t>>3)|((t&8192)?t<<2:t)) R: t*(((t>>9)^((t>>9)-1)^1)%13)
+
+// ryg 2011-10-04 http://pouet.net/topic.php?which=8357&page=8
+((t>>4)*(13&(0x8898a989>>(t>>11&30)))&255)+((((t>>9|(t>>2)|t>>8)*10+4*((t>>2)&t>>15|t>>8))&255)>>1)
+
+// gasman 2011-10-05 http://pouet.net/topic.php?which=8357&page=12 js-only
+(t<<3)*[8/9,1,9/8,6/5,4/3,3/2,0][[0xd2d2c8,0xce4088,0xca32c8,0x8e4009][t>>14&3]>>(0x3dbe4688>>((t>>10&15)>9?18:t>>10&15)*3&7)*3&7]
+
+// a1k0n http://news.ycombinator.com/item?id=3063359 js-only
+SS=function(s,o,r,p){var c=s.charCodeAt((t>>r)%p);return c==32?0:31&t*Math.pow(2,c/12-o)},SS("0 0     7 7     037:<<",6,10,32) + (t&4096?SS("037",4,8,3)*(4096-(t&4095))>>12 : 0)
+
+// mu6k 2011-10-10 http://www.youtube.com/watch?v=tCRPUv8V22o "Long-line Theory", Chaos Theory cover, optimized by ryg, p01 et al., JS-only
+w=t>>9,k=32,m=2048,a=1-t/m%1,d=(14*t*t^t)%m*a,y=[3,3,4.7,2][p=w/k&3]*t/4,h="IQNNNN!!]]!Q!IW]WQNN??!!W]WQNNN?".charCodeAt(w/2&15|p/3<<4)/33*t-t,s=y*.98%80+y%80+(w>>7&&a*((5*t%m*a&128)*(0x53232323>>w/4&1)+(d&127)*(0xa444c444>>w/4&1)*1.5+(d*w&1)+(h%k+h*1.99%k+h*.49%k+h*.97%k-64)*(4-a-a))),s*s>>14?127:s
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/Makefile b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/dds.c b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/dds.c
new file mode 100644
index 0000000..1a8ea58
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/dds.c	
@@ -0,0 +1,56 @@
+                                           /* Direct-digital synthesis */
+
+// ------- Preamble -------- //
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#include <util/delay.h>                     /* Functions to waste time */
+#include <avr/power.h>
+
+#include "pinDefines.h"
+
+#include "fullSine.h"
+
+static inline void initTimer0(void) {
+  TCCR0A |= (1 << COM0A1);                      /* PWM output on OCR0A */
+  SPEAKER_DDR |= (1 << SPEAKER);               /* enable output on pin */
+
+  TCCR0A |= (1 << WGM00);                             /* Fast PWM mode */
+  TCCR0A |= (1 << WGM01);                       /* Fast PWM mode, pt.2 */
+
+  TCCR0B |= (1 << CS00);                    /* Clock with /1 prescaler */
+}
+
+int main(void) {
+
+  uint16_t accumulator = 0;
+  uint16_t accumulatorSteps = 880;                    /* approx 440 Hz */
+  uint8_t waveStep;
+  int8_t pwmValue;
+
+  // -------- Inits --------- //
+
+  clock_prescale_set(clock_div_1);                  /* CPU clock 8 MHz */
+  initTimer0();
+  BUTTON_PORT |= (1 << BUTTON);                    /* pullup on button */
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    if (bit_is_clear(BUTTON_PIN, BUTTON)) {
+
+      SPEAKER_DDR |= (1 << SPEAKER);                 /* enable speaker */
+      accumulator += accumulatorSteps;          /* advance accumulator */
+      waveStep = accumulator >> 8;           /* which entry in lookup? */
+      pwmValue = fullSine[waveStep];                 /* lookup voltage */
+
+      loop_until_bit_is_set(TIFR0, TOV0);        /* wait for PWM cycle */
+      OCR0A = 128 + pwmValue;                     /* set new PWM value */
+      TIFR0 |= (1 << TOV0);                  /* reset PWM overflow bit */
+    }
+
+    else {                                       /* button not pressed */
+      SPEAKER_DDR &= ~(1 << SPEAKER);              /* disable speaker */
+    }
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSaw15.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSaw15.h
new file mode 100644
index 0000000..69e64a3
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSaw15.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw15[256] = {
+  0, 1, 3, 4, 5, 6, 7, 7,
+  7, 7, 7, 7, 8, 9, 10, 12,
+  13, 15, 17, 18, 20, 21, 21, 22,
+  22, 22, 22, 22, 22, 23, 24, 25,
+  27, 29, 31, 33, 34, 35, 36, 36,
+  36, 36, 36, 36, 36, 37, 38, 39,
+  41, 43, 45, 47, 48, 50, 51, 51,
+  51, 51, 51, 51, 51, 51, 52, 53,
+  54, 56, 58, 61, 63, 64, 66, 66,
+  67, 66, 66, 65, 65, 65, 65, 66,
+  68, 70, 72, 75, 77, 79, 81, 82,
+  82, 82, 81, 80, 79, 78, 78, 78,
+  80, 82, 85, 88, 92, 95, 97, 99,
+  100, 99, 98, 95, 93, 90, 88, 88,
+  89, 91, 96, 101, 108, 115, 121, 125,
+  127, 125, 119, 108, 93, 74, 51, 26,
+  0, -27, -52, -75, -94, -109, -120, -126,
+  -128, -126, -122, -116, -109, -102, -97, -92,
+  -90, -89, -89, -91, -94, -96, -99, -100,
+  -101, -100, -98, -96, -93, -89, -86, -83,
+  -81, -79, -79, -79, -80, -81, -82, -83,
+  -83, -83, -82, -80, -78, -76, -73, -71,
+  -69, -67, -66, -66, -66, -66, -67, -67,
+  -68, -67, -67, -65, -64, -62, -59, -57,
+  -55, -54, -53, -52, -52, -52, -52, -52,
+  -52, -52, -52, -51, -49, -48, -46, -44,
+  -42, -40, -39, -38, -37, -37, -37, -37,
+  -37, -37, -37, -36, -35, -34, -32, -30,
+  -28, -26, -25, -24, -23, -23, -23, -23,
+  -23, -23, -22, -22, -21, -19, -18, -16,
+  -14, -13, -11, -10, -9, -8, -8, -8,
+  -8, -8, -8, -7, -6, -5, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSaw3.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSaw3.h
new file mode 100644
index 0000000..c0c1877
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSaw3.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw3[256] = {
+  0, 2, 4, 6, 8, 10, 12, 14,
+  16, 18, 20, 22, 23, 25, 27, 28,
+  29, 31, 32, 33, 34, 35, 35, 36,
+  37, 37, 38, 38, 38, 38, 39, 39,
+  39, 39, 39, 38, 38, 38, 38, 38,
+  38, 38, 38, 38, 38, 38, 38, 38,
+  39, 39, 40, 40, 41, 42, 43, 44,
+  45, 46, 47, 49, 51, 52, 54, 56,
+  58, 61, 63, 65, 68, 70, 73, 76,
+  79, 81, 84, 87, 90, 93, 96, 98,
+  101, 104, 106, 109, 111, 114, 116, 118,
+  120, 121, 123, 124, 125, 126, 126, 127,
+  127, 127, 126, 126, 125, 124, 122, 120,
+  118, 116, 113, 110, 107, 104, 100, 96,
+  92, 87, 83, 78, 72, 67, 62, 56,
+  50, 44, 38, 32, 25, 19, 12, 6,
+  0, -7, -13, -20, -26, -33, -39, -45,
+  -51, -57, -63, -68, -73, -79, -84, -88,
+  -93, -97, -101, -105, -108, -111, -114, -117,
+  -119, -121, -123, -125, -126, -127, -127, -128,
+  -128, -128, -127, -127, -126, -125, -124, -122,
+  -121, -119, -117, -115, -112, -110, -107, -105,
+  -102, -99, -97, -94, -91, -88, -85, -82,
+  -80, -77, -74, -71, -69, -66, -64, -62,
+  -59, -57, -55, -53, -52, -50, -48, -47,
+  -46, -45, -44, -43, -42, -41, -41, -40,
+  -40, -39, -39, -39, -39, -39, -39, -39,
+  -39, -39, -39, -39, -39, -39, -40, -40,
+  -40, -40, -40, -39, -39, -39, -39, -38,
+  -38, -37, -36, -36, -35, -34, -33, -32,
+  -30, -29, -28, -26, -24, -23, -21, -19,
+  -17, -15, -13, -11, -9, -7, -5, -3
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSaw7.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSaw7.h
new file mode 100644
index 0000000..ef38b9e
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSaw7.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw7[256] = {
+  0, 1, 3, 5, 7, 8, 10, 11,
+  12, 13, 14, 15, 15, 15, 15, 16,
+  16, 16, 16, 16, 16, 16, 16, 17,
+  17, 18, 19, 20, 21, 23, 24, 26,
+  28, 30, 32, 34, 36, 38, 39, 41,
+  43, 44, 45, 46, 47, 47, 48, 48,
+  48, 48, 48, 48, 48, 47, 47, 47,
+  47, 47, 48, 49, 50, 51, 52, 54,
+  55, 57, 60, 62, 64, 66, 69, 71,
+  73, 75, 77, 79, 80, 81, 82, 82,
+  82, 82, 82, 81, 80, 80, 79, 78,
+  77, 76, 75, 75, 75, 76, 76, 78,
+  79, 81, 84, 87, 90, 94, 98, 102,
+  106, 110, 114, 117, 121, 123, 125, 127,
+  127, 127, 125, 122, 119, 114, 108, 101,
+  93, 84, 74, 63, 51, 39, 26, 13,
+  0, -14, -27, -40, -52, -64, -75, -85,
+  -94, -102, -109, -115, -120, -123, -126, -128,
+  -128, -128, -126, -124, -122, -118, -115, -111,
+  -107, -103, -99, -95, -91, -88, -85, -82,
+  -80, -79, -77, -77, -76, -76, -76, -77,
+  -78, -79, -80, -81, -81, -82, -83, -83,
+  -83, -83, -83, -82, -81, -80, -78, -76,
+  -74, -72, -70, -67, -65, -63, -61, -58,
+  -56, -55, -53, -52, -51, -50, -49, -48,
+  -48, -48, -48, -48, -49, -49, -49, -49,
+  -49, -49, -49, -48, -48, -47, -46, -45,
+  -44, -42, -40, -39, -37, -35, -33, -31,
+  -29, -27, -25, -24, -22, -21, -20, -19,
+  -18, -18, -17, -17, -17, -17, -17, -17,
+  -17, -17, -16, -16, -16, -16, -15, -14,
+  -13, -12, -11, -9, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSine.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSine.h
new file mode 100644
index 0000000..430d305
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSine.h	
@@ -0,0 +1,34 @@
+int8_t fullSine[256] = {
+  0, 3, 6, 9, 12, 15, 18, 21,
+  24, 27, 30, 34, 37, 39, 42, 45,
+  48, 51, 54, 57, 60, 62, 65, 68,
+  70, 73, 75, 78, 80, 83, 85, 87,
+  90, 92, 94, 96, 98, 100, 102, 104,
+  106, 107, 109, 110, 112, 113, 115, 116,
+  117, 118, 120, 121, 122, 122, 123, 124,
+  125, 125, 126, 126, 126, 127, 127, 127,
+  127, 127, 127, 127, 126, 126, 126, 125,
+  125, 124, 123, 122, 122, 121, 120, 118,
+  117, 116, 115, 113, 112, 110, 109, 107,
+  106, 104, 102, 100, 98, 96, 94, 92,
+  90, 87, 85, 83, 80, 78, 75, 73,
+  70, 68, 65, 62, 60, 57, 54, 51,
+  48, 45, 42, 39, 37, 34, 30, 27,
+  24, 21, 18, 15, 12, 9, 6, 3,
+  0, -4, -7, -10, -13, -16, -19, -22,
+  -25, -28, -31, -35, -38, -40, -43, -46,
+  -49, -52, -55, -58, -61, -63, -66, -69,
+  -71, -74, -76, -79, -81, -84, -86, -88,
+  -91, -93, -95, -97, -99, -101, -103, -105,
+  -107, -108, -110, -111, -113, -114, -116, -117,
+  -118, -119, -121, -122, -123, -123, -124, -125,
+  -126, -126, -127, -127, -127, -128, -128, -128,
+  -128, -128, -128, -128, -127, -127, -127, -126,
+  -126, -125, -124, -123, -123, -122, -121, -119,
+  -118, -117, -116, -114, -113, -111, -110, -108,
+  -107, -105, -103, -101, -99, -97, -95, -93,
+  -91, -88, -86, -84, -81, -79, -76, -74,
+  -71, -69, -66, -63, -61, -58, -55, -52,
+  -49, -46, -43, -40, -38, -35, -31, -28,
+  -25, -22, -19, -16, -13, -10, -7, -4
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSquare15.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSquare15.h
new file mode 100644
index 0000000..94a3515
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSquare15.h	
@@ -0,0 +1,34 @@
+int8_t fullSquare15[256] = {
+  0, 1, 3, 4, 5, 6, 7, 7,
+  7, 7, 7, 7, 8, 9, 10, 12,
+  13, 15, 17, 18, 20, 21, 21, 22,
+  22, 22, 22, 22, 22, 23, 24, 25,
+  27, 29, 31, 33, 34, 35, 36, 36,
+  36, 36, 36, 36, 36, 37, 38, 39,
+  41, 43, 45, 47, 48, 50, 51, 51,
+  51, 51, 51, 51, 51, 51, 52, 53,
+  54, 56, 58, 61, 63, 64, 66, 66,
+  67, 66, 66, 65, 65, 65, 65, 66,
+  68, 70, 72, 75, 77, 79, 81, 82,
+  82, 82, 81, 80, 79, 78, 78, 78,
+  80, 82, 85, 88, 92, 95, 97, 99,
+  100, 99, 98, 95, 93, 90, 88, 88,
+  89, 91, 96, 101, 108, 115, 121, 125,
+  127, 125, 119, 108, 93, 74, 51, 26,
+  0, -27, -52, -75, -94, -109, -120, -126,
+  -128, -126, -122, -116, -109, -102, -97, -92,
+  -90, -89, -89, -91, -94, -96, -99, -100,
+  -101, -100, -98, -96, -93, -89, -86, -83,
+  -81, -79, -79, -79, -80, -81, -82, -83,
+  -83, -83, -82, -80, -78, -76, -73, -71,
+  -69, -67, -66, -66, -66, -66, -67, -67,
+  -68, -67, -67, -65, -64, -62, -59, -57,
+  -55, -54, -53, -52, -52, -52, -52, -52,
+  -52, -52, -52, -51, -49, -48, -46, -44,
+  -42, -40, -39, -38, -37, -37, -37, -37,
+  -37, -37, -37, -36, -35, -34, -32, -30,
+  -28, -26, -25, -24, -23, -23, -23, -23,
+  -23, -23, -22, -22, -21, -19, -18, -16,
+  -14, -13, -11, -10, -9, -8, -8, -8,
+  -8, -8, -8, -7, -6, -5, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSquare3.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSquare3.h
new file mode 100644
index 0000000..c20fa0a
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSquare3.h	
@@ -0,0 +1,34 @@
+int8_t fullSquare3[256] = {
+  0, 2, 4, 6, 8, 10, 12, 14,
+  16, 18, 20, 22, 23, 25, 27, 28,
+  29, 31, 32, 33, 34, 35, 35, 36,
+  37, 37, 38, 38, 38, 38, 39, 39,
+  39, 39, 39, 38, 38, 38, 38, 38,
+  38, 38, 38, 38, 38, 38, 38, 38,
+  39, 39, 40, 40, 41, 42, 43, 44,
+  45, 46, 47, 49, 51, 52, 54, 56,
+  58, 61, 63, 65, 68, 70, 73, 76,
+  79, 81, 84, 87, 90, 93, 96, 98,
+  101, 104, 106, 109, 111, 114, 116, 118,
+  120, 121, 123, 124, 125, 126, 126, 127,
+  127, 127, 126, 126, 125, 124, 122, 120,
+  118, 116, 113, 110, 107, 104, 100, 96,
+  92, 87, 83, 78, 72, 67, 62, 56,
+  50, 44, 38, 32, 25, 19, 12, 6,
+  0, -7, -13, -20, -26, -33, -39, -45,
+  -51, -57, -63, -68, -73, -79, -84, -88,
+  -93, -97, -101, -105, -108, -111, -114, -117,
+  -119, -121, -123, -125, -126, -127, -127, -128,
+  -128, -128, -127, -127, -126, -125, -124, -122,
+  -121, -119, -117, -115, -112, -110, -107, -105,
+  -102, -99, -97, -94, -91, -88, -85, -82,
+  -80, -77, -74, -71, -69, -66, -64, -62,
+  -59, -57, -55, -53, -52, -50, -48, -47,
+  -46, -45, -44, -43, -42, -41, -41, -40,
+  -40, -39, -39, -39, -39, -39, -39, -39,
+  -39, -39, -39, -39, -39, -39, -40, -40,
+  -40, -40, -40, -39, -39, -39, -39, -38,
+  -38, -37, -36, -36, -35, -34, -33, -32,
+  -30, -29, -28, -26, -24, -23, -21, -19,
+  -17, -15, -13, -11, -9, -7, -5, -3
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSquare7.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSquare7.h
new file mode 100644
index 0000000..43a679e
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullSquare7.h	
@@ -0,0 +1,34 @@
+int8_t fullSquare7[256] = {
+  0, 1, 3, 5, 7, 8, 10, 11,
+  12, 13, 14, 15, 15, 15, 15, 16,
+  16, 16, 16, 16, 16, 16, 16, 17,
+  17, 18, 19, 20, 21, 23, 24, 26,
+  28, 30, 32, 34, 36, 38, 39, 41,
+  43, 44, 45, 46, 47, 47, 48, 48,
+  48, 48, 48, 48, 48, 47, 47, 47,
+  47, 47, 48, 49, 50, 51, 52, 54,
+  55, 57, 60, 62, 64, 66, 69, 71,
+  73, 75, 77, 79, 80, 81, 82, 82,
+  82, 82, 82, 81, 80, 80, 79, 78,
+  77, 76, 75, 75, 75, 76, 76, 78,
+  79, 81, 84, 87, 90, 94, 98, 102,
+  106, 110, 114, 117, 121, 123, 125, 127,
+  127, 127, 125, 122, 119, 114, 108, 101,
+  93, 84, 74, 63, 51, 39, 26, 13,
+  0, -14, -27, -40, -52, -64, -75, -85,
+  -94, -102, -109, -115, -120, -123, -126, -128,
+  -128, -128, -126, -124, -122, -118, -115, -111,
+  -107, -103, -99, -95, -91, -88, -85, -82,
+  -80, -79, -77, -77, -76, -76, -76, -77,
+  -78, -79, -80, -81, -81, -82, -83, -83,
+  -83, -83, -83, -82, -81, -80, -78, -76,
+  -74, -72, -70, -67, -65, -63, -61, -58,
+  -56, -55, -53, -52, -51, -50, -49, -48,
+  -48, -48, -48, -48, -49, -49, -49, -49,
+  -49, -49, -49, -48, -48, -47, -46, -45,
+  -44, -42, -40, -39, -37, -35, -33, -31,
+  -29, -27, -25, -24, -22, -21, -20, -19,
+  -18, -18, -17, -17, -17, -17, -17, -17,
+  -17, -17, -16, -16, -16, -16, -15, -14,
+  -13, -12, -11, -9, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullTri15.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullTri15.h
new file mode 100644
index 0000000..e227e64
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullTri15.h	
@@ -0,0 +1,34 @@
+int8_t fullTri15[256] = {
+  0, 1, 3, 4, 5, 6, 7, 7,
+  7, 7, 7, 7, 8, 9, 10, 12,
+  13, 15, 17, 18, 20, 21, 21, 22,
+  22, 22, 22, 22, 22, 23, 24, 25,
+  27, 29, 31, 33, 34, 35, 36, 36,
+  36, 36, 36, 36, 36, 37, 38, 39,
+  41, 43, 45, 47, 48, 50, 51, 51,
+  51, 51, 51, 51, 51, 51, 52, 53,
+  54, 56, 58, 61, 63, 64, 66, 66,
+  67, 66, 66, 65, 65, 65, 65, 66,
+  68, 70, 72, 75, 77, 79, 81, 82,
+  82, 82, 81, 80, 79, 78, 78, 78,
+  80, 82, 85, 88, 92, 95, 97, 99,
+  100, 99, 98, 95, 93, 90, 88, 88,
+  89, 91, 96, 101, 108, 115, 121, 125,
+  127, 125, 119, 108, 93, 74, 51, 26,
+  0, -27, -52, -75, -94, -109, -120, -126,
+  -128, -126, -122, -116, -109, -102, -97, -92,
+  -90, -89, -89, -91, -94, -96, -99, -100,
+  -101, -100, -98, -96, -93, -89, -86, -83,
+  -81, -79, -79, -79, -80, -81, -82, -83,
+  -83, -83, -82, -80, -78, -76, -73, -71,
+  -69, -67, -66, -66, -66, -66, -67, -67,
+  -68, -67, -67, -65, -64, -62, -59, -57,
+  -55, -54, -53, -52, -52, -52, -52, -52,
+  -52, -52, -52, -51, -49, -48, -46, -44,
+  -42, -40, -39, -38, -37, -37, -37, -37,
+  -37, -37, -37, -36, -35, -34, -32, -30,
+  -28, -26, -25, -24, -23, -23, -23, -23,
+  -23, -23, -22, -22, -21, -19, -18, -16,
+  -14, -13, -11, -10, -9, -8, -8, -8,
+  -8, -8, -8, -7, -6, -5, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullTri3.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullTri3.h
new file mode 100644
index 0000000..236e937
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullTri3.h	
@@ -0,0 +1,34 @@
+int8_t fullTri3[256] = {
+  0, 2, 4, 6, 8, 10, 12, 14,
+  16, 18, 20, 22, 23, 25, 27, 28,
+  29, 31, 32, 33, 34, 35, 35, 36,
+  37, 37, 38, 38, 38, 38, 39, 39,
+  39, 39, 39, 38, 38, 38, 38, 38,
+  38, 38, 38, 38, 38, 38, 38, 38,
+  39, 39, 40, 40, 41, 42, 43, 44,
+  45, 46, 47, 49, 51, 52, 54, 56,
+  58, 61, 63, 65, 68, 70, 73, 76,
+  79, 81, 84, 87, 90, 93, 96, 98,
+  101, 104, 106, 109, 111, 114, 116, 118,
+  120, 121, 123, 124, 125, 126, 126, 127,
+  127, 127, 126, 126, 125, 124, 122, 120,
+  118, 116, 113, 110, 107, 104, 100, 96,
+  92, 87, 83, 78, 72, 67, 62, 56,
+  50, 44, 38, 32, 25, 19, 12, 6,
+  0, -7, -13, -20, -26, -33, -39, -45,
+  -51, -57, -63, -68, -73, -79, -84, -88,
+  -93, -97, -101, -105, -108, -111, -114, -117,
+  -119, -121, -123, -125, -126, -127, -127, -128,
+  -128, -128, -127, -127, -126, -125, -124, -122,
+  -121, -119, -117, -115, -112, -110, -107, -105,
+  -102, -99, -97, -94, -91, -88, -85, -82,
+  -80, -77, -74, -71, -69, -66, -64, -62,
+  -59, -57, -55, -53, -52, -50, -48, -47,
+  -46, -45, -44, -43, -42, -41, -41, -40,
+  -40, -39, -39, -39, -39, -39, -39, -39,
+  -39, -39, -39, -39, -39, -39, -40, -40,
+  -40, -40, -40, -39, -39, -39, -39, -38,
+  -38, -37, -36, -36, -35, -34, -33, -32,
+  -30, -29, -28, -26, -24, -23, -21, -19,
+  -17, -15, -13, -11, -9, -7, -5, -3
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullTri7.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullTri7.h
new file mode 100644
index 0000000..ed0af55
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullTri7.h	
@@ -0,0 +1,34 @@
+int8_t fullTri7[256] = {
+  0, 1, 3, 5, 7, 8, 10, 11,
+  12, 13, 14, 15, 15, 15, 15, 16,
+  16, 16, 16, 16, 16, 16, 16, 17,
+  17, 18, 19, 20, 21, 23, 24, 26,
+  28, 30, 32, 34, 36, 38, 39, 41,
+  43, 44, 45, 46, 47, 47, 48, 48,
+  48, 48, 48, 48, 48, 47, 47, 47,
+  47, 47, 48, 49, 50, 51, 52, 54,
+  55, 57, 60, 62, 64, 66, 69, 71,
+  73, 75, 77, 79, 80, 81, 82, 82,
+  82, 82, 82, 81, 80, 80, 79, 78,
+  77, 76, 75, 75, 75, 76, 76, 78,
+  79, 81, 84, 87, 90, 94, 98, 102,
+  106, 110, 114, 117, 121, 123, 125, 127,
+  127, 127, 125, 122, 119, 114, 108, 101,
+  93, 84, 74, 63, 51, 39, 26, 13,
+  0, -14, -27, -40, -52, -64, -75, -85,
+  -94, -102, -109, -115, -120, -123, -126, -128,
+  -128, -128, -126, -124, -122, -118, -115, -111,
+  -107, -103, -99, -95, -91, -88, -85, -82,
+  -80, -79, -77, -77, -76, -76, -76, -77,
+  -78, -79, -80, -81, -81, -82, -83, -83,
+  -83, -83, -83, -82, -81, -80, -78, -76,
+  -74, -72, -70, -67, -65, -63, -61, -58,
+  -56, -55, -53, -52, -51, -50, -49, -48,
+  -48, -48, -48, -48, -49, -49, -49, -49,
+  -49, -49, -49, -48, -48, -47, -46, -45,
+  -44, -42, -40, -39, -37, -35, -33, -31,
+  -29, -27, -25, -24, -22, -21, -20, -19,
+  -18, -18, -17, -17, -17, -17, -17, -17,
+  -17, -17, -16, -16, -16, -16, -15, -14,
+  -13, -12, -11, -9, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullTriangle.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullTriangle.h
new file mode 100644
index 0000000..04cb022
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/fullTriangle.h	
@@ -0,0 +1,34 @@
+int8_t fullTriangle[256] = {
+  0, 1, 3, 5, 7, 9, 11, 13,
+  15, 17, 19, 21, 23, 25, 27, 29,
+  31, 33, 35, 37, 39, 41, 43, 45,
+  47, 49, 51, 53, 55, 57, 59, 61,
+  63, 65, 67, 69, 71, 73, 75, 77,
+  79, 81, 83, 85, 87, 89, 91, 93,
+  95, 97, 99, 101, 103, 105, 107, 109,
+  111, 113, 115, 117, 119, 121, 123, 125,
+  127, 125, 123, 121, 119, 117, 115, 113,
+  111, 109, 107, 105, 103, 101, 99, 97,
+  95, 93, 91, 89, 87, 85, 83, 81,
+  79, 77, 75, 73, 71, 69, 67, 65,
+  63, 61, 59, 57, 55, 53, 51, 49,
+  47, 45, 43, 41, 39, 37, 35, 33,
+  31, 29, 27, 25, 23, 21, 19, 17,
+  15, 13, 11, 9, 7, 5, 3, 1,
+  0, -2, -4, -6, -8, -10, -12, -14,
+  -16, -18, -20, -22, -24, -26, -28, -30,
+  -32, -34, -36, -38, -40, -42, -44, -46,
+  -48, -50, -52, -54, -56, -58, -60, -62,
+  -64, -66, -68, -70, -72, -74, -76, -78,
+  -80, -82, -84, -86, -88, -90, -92, -94,
+  -96, -98, -100, -102, -104, -106, -108, -110,
+  -112, -114, -116, -118, -120, -122, -124, -126,
+  -128, -126, -124, -122, -120, -118, -116, -114,
+  -112, -110, -108, -106, -104, -102, -100, -98,
+  -96, -94, -92, -90, -88, -86, -84, -82,
+  -80, -78, -76, -74, -72, -70, -68, -66,
+  -64, -62, -60, -58, -56, -54, -52, -50,
+  -48, -46, -44, -42, -40, -38, -36, -34,
+  -32, -30, -28, -26, -24, -22, -20, -18,
+  -16, -14, -12, -10, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/generateWavetables.py b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/generateWavetables.py
new file mode 100644
index 0000000..905593f
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds/generateWavetables.py	
@@ -0,0 +1,101 @@
+## This file generates headers with lookup tables for various waveforms
+## Add your own.
+
+import math
+
+def phaseSteps(maxPhase, length=256):
+    steps = range(0, length) 
+    steps = [1.0*x/length * 2.0*math.pi * (maxPhase/360.0) for x in steps]
+    return(steps)
+
+def scaleAndRound(data, scale=255, signedInt=True):
+    data = [0.0+x-min(data) for x in data]
+    data = [1.0*x/max(data)*scale for x in data]
+    data = [int(round(x)) for x in data]
+    if signedInt:
+        data = [x-(scale+1)/2 for x in data]
+    return(data)
+
+def makeSin(maxPhase, length=256):
+    sinus = [math.sin(x) for x in phaseSteps(maxPhase, length)]
+    return(sinus)
+
+def prettyPrint(data, perLine = 8):
+    outString = ""
+    for i in range(len(data) / perLine):
+        strings = [str(x) for x in data[perLine*i:(perLine*i+perLine)]]
+        outString += "\t" + ", ".join(strings) + ",\n"
+    outString = outString[:-2] + "\n" # drop the final comma
+    return(outString)
+
+def writeHeader(fileName, dataName, data, signedInt=True):
+    outfile = open(fileName, "w")
+    if signedInt:
+        outfile.write("int8_t {}[{:d}] = {{ \n".format(dataName, len(data)))
+    else:
+        outfile.write("uint8_t {}[{:d}] = {{ \n".format(dataName, len(data)))
+    outfile.write(prettyPrint(data))
+    outfile.write("};\n")
+    outfile.close()
+
+def bandlimitedSawtooth(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    sign = 1.0
+    for k in range(1, numberPartials+1):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] += sign * math.sin(phases[i]) / k
+        sign = sign * -1
+    return(wave)
+
+def bandlimitedSquare(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    for k in range(1, numberPartials*2, 2):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] +=  math.sin(phases[i]) / k
+    return(wave)
+
+def bandlimitedTriangle(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    sign = 1.0
+    for k in range(1, numberPartials*2, 2):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] += sign * math.sin(phases[i]) / k**2
+        sign = sign * -1
+    return(wave)
+
+
+
+if __name__ == "__main__":
+    
+    ## Full-waves, full 256 bytes, 0-255 range
+    writeHeader("fullSine.h", 'fullSine', scaleAndRound(makeSin(360)))
+
+    triangleWave = range(0,64)
+    triangleWave.extend(range(64, -64, -1))
+    triangleWave.extend(range(-64, 0, 1))
+    triangleWave = scaleAndRound(triangleWave)
+    writeHeader("fullTriangle.h", 'fullTriangle', triangleWave)
+
+    for numberFrequencies in [3,7,15]:
+        saw = scaleAndRound(bandlimitedSawtooth(360, numberFrequencies))
+        writeHeader("fullSaw{}.h".format(numberFrequencies), 
+                    'fullSaw{}'.format(numberFrequencies), saw)
+        tri = scaleAndRound(bandlimitedTriangle(360, numberFrequencies))
+        writeHeader("fullTri{}.h".format(numberFrequencies), 
+                    'fullTri{}'.format(numberFrequencies), tri)
+        square = scaleAndRound(bandlimitedSquare(360, numberFrequencies))
+        writeHeader("fullSquare{}.h".format(numberFrequencies), 
+                    'fullSquare{}'.format(numberFrequencies), square)
+
+    ## Note that if you define / use too many different waveforms, 
+    ## and you don't store them in PROGMEM in your AVR C routines,
+    ## you might run the chip out of RAM, which causes strange and
+    ## nearly impossible-to-diagnose glitches.
+    
+    ## So here we're breaking each waveform up into its own include file.
+    ## There are ways of storing them all in program memory, and we'll
+    ##  see examples of that in later chapters.
+    
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/Makefile b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/dds_interrupts.c b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/dds_interrupts.c
new file mode 100644
index 0000000..cdffa3e
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/dds_interrupts.c	
@@ -0,0 +1,74 @@
+                                           /* Direct-digital synthesis */
+
+// ------- Preamble -------- //
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#include <util/delay.h>                     /* Functions to waste time */
+#include <avr/interrupt.h>
+#include <avr/power.h>
+#include "pinDefines.h"
+
+#include "fullSine.h"
+#include "USART.h"
+
+volatile uint16_t accumulator;
+volatile uint16_t tuningWord;
+
+static inline void initTimer0(void) {
+  TCCR0A |= (1 << COM0A1);                      /* PWM output on OCR0A */
+  SPEAKER_DDR |= (1 << SPEAKER);               /* enable output on pin */
+
+  TCCR0A |= (1 << WGM00);                             /* Fast PWM mode */
+  TCCR0A |= (1 << WGM01);                       /* Fast PWM mode, pt.2 */
+
+  TCCR0B |= (1 << CS00);                    /* Clock with /1 prescaler */
+  TIMSK0 |= (1 << TOIE0);                        /* Overflow interrupt */
+  sei();                                           /* Enable interrupt */
+}
+
+ISR(TIMER0_OVF_vect) {
+
+  accumulator += tuningWord;          /* take tuningWord steps forward */
+                                              /* lookup and set output */
+  OCR0A = 128 + fullSine[(uint8_t) (accumulator >> 8)];
+
+}
+
+static inline void pollButton(void) {
+  if (bit_is_clear(BUTTON_PIN, BUTTON)) {
+    SPEAKER_DDR |= (1 << SPEAKER);             /* enable output on pin */
+    LED_PORT &= ~(1 << LED0);
+  }
+  else {
+    SPEAKER_DDR &= ~(1 << SPEAKER);          /* disable output on pin */
+    LED_PORT |= (1 << LED0);
+  }
+}
+
+int main(void) {
+
+  // -------- Inits --------- //
+
+  clock_prescale_set(clock_div_1);                  /* CPU clock 8 MHz */
+  initTimer0();
+  initUSART();
+
+  BUTTON_PORT |= (1 << BUTTON);                    /* pullup on button */
+
+  LED_DDR |= (1 << LED0);                    /* LED on for diagnostics */
+  LED_PORT |= (1 << LED0);
+  _delay_ms(100);
+  LED_PORT &= ~(1 << LED0);
+
+  SPEAKER_DDR |= (1 << SPEAKER);
+
+  tuningWord = 880;
+  transmitByte((uint8_t) tuningWord >> 2);       /* approx value in Hz */
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    pollButton();
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSaw15.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSaw15.h
new file mode 100644
index 0000000..69e64a3
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSaw15.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw15[256] = {
+  0, 1, 3, 4, 5, 6, 7, 7,
+  7, 7, 7, 7, 8, 9, 10, 12,
+  13, 15, 17, 18, 20, 21, 21, 22,
+  22, 22, 22, 22, 22, 23, 24, 25,
+  27, 29, 31, 33, 34, 35, 36, 36,
+  36, 36, 36, 36, 36, 37, 38, 39,
+  41, 43, 45, 47, 48, 50, 51, 51,
+  51, 51, 51, 51, 51, 51, 52, 53,
+  54, 56, 58, 61, 63, 64, 66, 66,
+  67, 66, 66, 65, 65, 65, 65, 66,
+  68, 70, 72, 75, 77, 79, 81, 82,
+  82, 82, 81, 80, 79, 78, 78, 78,
+  80, 82, 85, 88, 92, 95, 97, 99,
+  100, 99, 98, 95, 93, 90, 88, 88,
+  89, 91, 96, 101, 108, 115, 121, 125,
+  127, 125, 119, 108, 93, 74, 51, 26,
+  0, -27, -52, -75, -94, -109, -120, -126,
+  -128, -126, -122, -116, -109, -102, -97, -92,
+  -90, -89, -89, -91, -94, -96, -99, -100,
+  -101, -100, -98, -96, -93, -89, -86, -83,
+  -81, -79, -79, -79, -80, -81, -82, -83,
+  -83, -83, -82, -80, -78, -76, -73, -71,
+  -69, -67, -66, -66, -66, -66, -67, -67,
+  -68, -67, -67, -65, -64, -62, -59, -57,
+  -55, -54, -53, -52, -52, -52, -52, -52,
+  -52, -52, -52, -51, -49, -48, -46, -44,
+  -42, -40, -39, -38, -37, -37, -37, -37,
+  -37, -37, -37, -36, -35, -34, -32, -30,
+  -28, -26, -25, -24, -23, -23, -23, -23,
+  -23, -23, -22, -22, -21, -19, -18, -16,
+  -14, -13, -11, -10, -9, -8, -8, -8,
+  -8, -8, -8, -7, -6, -5, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSaw3.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSaw3.h
new file mode 100644
index 0000000..c0c1877
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSaw3.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw3[256] = {
+  0, 2, 4, 6, 8, 10, 12, 14,
+  16, 18, 20, 22, 23, 25, 27, 28,
+  29, 31, 32, 33, 34, 35, 35, 36,
+  37, 37, 38, 38, 38, 38, 39, 39,
+  39, 39, 39, 38, 38, 38, 38, 38,
+  38, 38, 38, 38, 38, 38, 38, 38,
+  39, 39, 40, 40, 41, 42, 43, 44,
+  45, 46, 47, 49, 51, 52, 54, 56,
+  58, 61, 63, 65, 68, 70, 73, 76,
+  79, 81, 84, 87, 90, 93, 96, 98,
+  101, 104, 106, 109, 111, 114, 116, 118,
+  120, 121, 123, 124, 125, 126, 126, 127,
+  127, 127, 126, 126, 125, 124, 122, 120,
+  118, 116, 113, 110, 107, 104, 100, 96,
+  92, 87, 83, 78, 72, 67, 62, 56,
+  50, 44, 38, 32, 25, 19, 12, 6,
+  0, -7, -13, -20, -26, -33, -39, -45,
+  -51, -57, -63, -68, -73, -79, -84, -88,
+  -93, -97, -101, -105, -108, -111, -114, -117,
+  -119, -121, -123, -125, -126, -127, -127, -128,
+  -128, -128, -127, -127, -126, -125, -124, -122,
+  -121, -119, -117, -115, -112, -110, -107, -105,
+  -102, -99, -97, -94, -91, -88, -85, -82,
+  -80, -77, -74, -71, -69, -66, -64, -62,
+  -59, -57, -55, -53, -52, -50, -48, -47,
+  -46, -45, -44, -43, -42, -41, -41, -40,
+  -40, -39, -39, -39, -39, -39, -39, -39,
+  -39, -39, -39, -39, -39, -39, -40, -40,
+  -40, -40, -40, -39, -39, -39, -39, -38,
+  -38, -37, -36, -36, -35, -34, -33, -32,
+  -30, -29, -28, -26, -24, -23, -21, -19,
+  -17, -15, -13, -11, -9, -7, -5, -3
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSaw7.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSaw7.h
new file mode 100644
index 0000000..ef38b9e
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSaw7.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw7[256] = {
+  0, 1, 3, 5, 7, 8, 10, 11,
+  12, 13, 14, 15, 15, 15, 15, 16,
+  16, 16, 16, 16, 16, 16, 16, 17,
+  17, 18, 19, 20, 21, 23, 24, 26,
+  28, 30, 32, 34, 36, 38, 39, 41,
+  43, 44, 45, 46, 47, 47, 48, 48,
+  48, 48, 48, 48, 48, 47, 47, 47,
+  47, 47, 48, 49, 50, 51, 52, 54,
+  55, 57, 60, 62, 64, 66, 69, 71,
+  73, 75, 77, 79, 80, 81, 82, 82,
+  82, 82, 82, 81, 80, 80, 79, 78,
+  77, 76, 75, 75, 75, 76, 76, 78,
+  79, 81, 84, 87, 90, 94, 98, 102,
+  106, 110, 114, 117, 121, 123, 125, 127,
+  127, 127, 125, 122, 119, 114, 108, 101,
+  93, 84, 74, 63, 51, 39, 26, 13,
+  0, -14, -27, -40, -52, -64, -75, -85,
+  -94, -102, -109, -115, -120, -123, -126, -128,
+  -128, -128, -126, -124, -122, -118, -115, -111,
+  -107, -103, -99, -95, -91, -88, -85, -82,
+  -80, -79, -77, -77, -76, -76, -76, -77,
+  -78, -79, -80, -81, -81, -82, -83, -83,
+  -83, -83, -83, -82, -81, -80, -78, -76,
+  -74, -72, -70, -67, -65, -63, -61, -58,
+  -56, -55, -53, -52, -51, -50, -49, -48,
+  -48, -48, -48, -48, -49, -49, -49, -49,
+  -49, -49, -49, -48, -48, -47, -46, -45,
+  -44, -42, -40, -39, -37, -35, -33, -31,
+  -29, -27, -25, -24, -22, -21, -20, -19,
+  -18, -18, -17, -17, -17, -17, -17, -17,
+  -17, -17, -16, -16, -16, -16, -15, -14,
+  -13, -12, -11, -9, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSine.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSine.h
new file mode 100644
index 0000000..430d305
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSine.h	
@@ -0,0 +1,34 @@
+int8_t fullSine[256] = {
+  0, 3, 6, 9, 12, 15, 18, 21,
+  24, 27, 30, 34, 37, 39, 42, 45,
+  48, 51, 54, 57, 60, 62, 65, 68,
+  70, 73, 75, 78, 80, 83, 85, 87,
+  90, 92, 94, 96, 98, 100, 102, 104,
+  106, 107, 109, 110, 112, 113, 115, 116,
+  117, 118, 120, 121, 122, 122, 123, 124,
+  125, 125, 126, 126, 126, 127, 127, 127,
+  127, 127, 127, 127, 126, 126, 126, 125,
+  125, 124, 123, 122, 122, 121, 120, 118,
+  117, 116, 115, 113, 112, 110, 109, 107,
+  106, 104, 102, 100, 98, 96, 94, 92,
+  90, 87, 85, 83, 80, 78, 75, 73,
+  70, 68, 65, 62, 60, 57, 54, 51,
+  48, 45, 42, 39, 37, 34, 30, 27,
+  24, 21, 18, 15, 12, 9, 6, 3,
+  0, -4, -7, -10, -13, -16, -19, -22,
+  -25, -28, -31, -35, -38, -40, -43, -46,
+  -49, -52, -55, -58, -61, -63, -66, -69,
+  -71, -74, -76, -79, -81, -84, -86, -88,
+  -91, -93, -95, -97, -99, -101, -103, -105,
+  -107, -108, -110, -111, -113, -114, -116, -117,
+  -118, -119, -121, -122, -123, -123, -124, -125,
+  -126, -126, -127, -127, -127, -128, -128, -128,
+  -128, -128, -128, -128, -127, -127, -127, -126,
+  -126, -125, -124, -123, -123, -122, -121, -119,
+  -118, -117, -116, -114, -113, -111, -110, -108,
+  -107, -105, -103, -101, -99, -97, -95, -93,
+  -91, -88, -86, -84, -81, -79, -76, -74,
+  -71, -69, -66, -63, -61, -58, -55, -52,
+  -49, -46, -43, -40, -38, -35, -31, -28,
+  -25, -22, -19, -16, -13, -10, -7, -4
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSquare15.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSquare15.h
new file mode 100644
index 0000000..94a3515
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSquare15.h	
@@ -0,0 +1,34 @@
+int8_t fullSquare15[256] = {
+  0, 1, 3, 4, 5, 6, 7, 7,
+  7, 7, 7, 7, 8, 9, 10, 12,
+  13, 15, 17, 18, 20, 21, 21, 22,
+  22, 22, 22, 22, 22, 23, 24, 25,
+  27, 29, 31, 33, 34, 35, 36, 36,
+  36, 36, 36, 36, 36, 37, 38, 39,
+  41, 43, 45, 47, 48, 50, 51, 51,
+  51, 51, 51, 51, 51, 51, 52, 53,
+  54, 56, 58, 61, 63, 64, 66, 66,
+  67, 66, 66, 65, 65, 65, 65, 66,
+  68, 70, 72, 75, 77, 79, 81, 82,
+  82, 82, 81, 80, 79, 78, 78, 78,
+  80, 82, 85, 88, 92, 95, 97, 99,
+  100, 99, 98, 95, 93, 90, 88, 88,
+  89, 91, 96, 101, 108, 115, 121, 125,
+  127, 125, 119, 108, 93, 74, 51, 26,
+  0, -27, -52, -75, -94, -109, -120, -126,
+  -128, -126, -122, -116, -109, -102, -97, -92,
+  -90, -89, -89, -91, -94, -96, -99, -100,
+  -101, -100, -98, -96, -93, -89, -86, -83,
+  -81, -79, -79, -79, -80, -81, -82, -83,
+  -83, -83, -82, -80, -78, -76, -73, -71,
+  -69, -67, -66, -66, -66, -66, -67, -67,
+  -68, -67, -67, -65, -64, -62, -59, -57,
+  -55, -54, -53, -52, -52, -52, -52, -52,
+  -52, -52, -52, -51, -49, -48, -46, -44,
+  -42, -40, -39, -38, -37, -37, -37, -37,
+  -37, -37, -37, -36, -35, -34, -32, -30,
+  -28, -26, -25, -24, -23, -23, -23, -23,
+  -23, -23, -22, -22, -21, -19, -18, -16,
+  -14, -13, -11, -10, -9, -8, -8, -8,
+  -8, -8, -8, -7, -6, -5, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSquare3.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSquare3.h
new file mode 100644
index 0000000..c20fa0a
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSquare3.h	
@@ -0,0 +1,34 @@
+int8_t fullSquare3[256] = {
+  0, 2, 4, 6, 8, 10, 12, 14,
+  16, 18, 20, 22, 23, 25, 27, 28,
+  29, 31, 32, 33, 34, 35, 35, 36,
+  37, 37, 38, 38, 38, 38, 39, 39,
+  39, 39, 39, 38, 38, 38, 38, 38,
+  38, 38, 38, 38, 38, 38, 38, 38,
+  39, 39, 40, 40, 41, 42, 43, 44,
+  45, 46, 47, 49, 51, 52, 54, 56,
+  58, 61, 63, 65, 68, 70, 73, 76,
+  79, 81, 84, 87, 90, 93, 96, 98,
+  101, 104, 106, 109, 111, 114, 116, 118,
+  120, 121, 123, 124, 125, 126, 126, 127,
+  127, 127, 126, 126, 125, 124, 122, 120,
+  118, 116, 113, 110, 107, 104, 100, 96,
+  92, 87, 83, 78, 72, 67, 62, 56,
+  50, 44, 38, 32, 25, 19, 12, 6,
+  0, -7, -13, -20, -26, -33, -39, -45,
+  -51, -57, -63, -68, -73, -79, -84, -88,
+  -93, -97, -101, -105, -108, -111, -114, -117,
+  -119, -121, -123, -125, -126, -127, -127, -128,
+  -128, -128, -127, -127, -126, -125, -124, -122,
+  -121, -119, -117, -115, -112, -110, -107, -105,
+  -102, -99, -97, -94, -91, -88, -85, -82,
+  -80, -77, -74, -71, -69, -66, -64, -62,
+  -59, -57, -55, -53, -52, -50, -48, -47,
+  -46, -45, -44, -43, -42, -41, -41, -40,
+  -40, -39, -39, -39, -39, -39, -39, -39,
+  -39, -39, -39, -39, -39, -39, -40, -40,
+  -40, -40, -40, -39, -39, -39, -39, -38,
+  -38, -37, -36, -36, -35, -34, -33, -32,
+  -30, -29, -28, -26, -24, -23, -21, -19,
+  -17, -15, -13, -11, -9, -7, -5, -3
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSquare7.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSquare7.h
new file mode 100644
index 0000000..43a679e
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullSquare7.h	
@@ -0,0 +1,34 @@
+int8_t fullSquare7[256] = {
+  0, 1, 3, 5, 7, 8, 10, 11,
+  12, 13, 14, 15, 15, 15, 15, 16,
+  16, 16, 16, 16, 16, 16, 16, 17,
+  17, 18, 19, 20, 21, 23, 24, 26,
+  28, 30, 32, 34, 36, 38, 39, 41,
+  43, 44, 45, 46, 47, 47, 48, 48,
+  48, 48, 48, 48, 48, 47, 47, 47,
+  47, 47, 48, 49, 50, 51, 52, 54,
+  55, 57, 60, 62, 64, 66, 69, 71,
+  73, 75, 77, 79, 80, 81, 82, 82,
+  82, 82, 82, 81, 80, 80, 79, 78,
+  77, 76, 75, 75, 75, 76, 76, 78,
+  79, 81, 84, 87, 90, 94, 98, 102,
+  106, 110, 114, 117, 121, 123, 125, 127,
+  127, 127, 125, 122, 119, 114, 108, 101,
+  93, 84, 74, 63, 51, 39, 26, 13,
+  0, -14, -27, -40, -52, -64, -75, -85,
+  -94, -102, -109, -115, -120, -123, -126, -128,
+  -128, -128, -126, -124, -122, -118, -115, -111,
+  -107, -103, -99, -95, -91, -88, -85, -82,
+  -80, -79, -77, -77, -76, -76, -76, -77,
+  -78, -79, -80, -81, -81, -82, -83, -83,
+  -83, -83, -83, -82, -81, -80, -78, -76,
+  -74, -72, -70, -67, -65, -63, -61, -58,
+  -56, -55, -53, -52, -51, -50, -49, -48,
+  -48, -48, -48, -48, -49, -49, -49, -49,
+  -49, -49, -49, -48, -48, -47, -46, -45,
+  -44, -42, -40, -39, -37, -35, -33, -31,
+  -29, -27, -25, -24, -22, -21, -20, -19,
+  -18, -18, -17, -17, -17, -17, -17, -17,
+  -17, -17, -16, -16, -16, -16, -15, -14,
+  -13, -12, -11, -9, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullTri15.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullTri15.h
new file mode 100644
index 0000000..e227e64
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullTri15.h	
@@ -0,0 +1,34 @@
+int8_t fullTri15[256] = {
+  0, 1, 3, 4, 5, 6, 7, 7,
+  7, 7, 7, 7, 8, 9, 10, 12,
+  13, 15, 17, 18, 20, 21, 21, 22,
+  22, 22, 22, 22, 22, 23, 24, 25,
+  27, 29, 31, 33, 34, 35, 36, 36,
+  36, 36, 36, 36, 36, 37, 38, 39,
+  41, 43, 45, 47, 48, 50, 51, 51,
+  51, 51, 51, 51, 51, 51, 52, 53,
+  54, 56, 58, 61, 63, 64, 66, 66,
+  67, 66, 66, 65, 65, 65, 65, 66,
+  68, 70, 72, 75, 77, 79, 81, 82,
+  82, 82, 81, 80, 79, 78, 78, 78,
+  80, 82, 85, 88, 92, 95, 97, 99,
+  100, 99, 98, 95, 93, 90, 88, 88,
+  89, 91, 96, 101, 108, 115, 121, 125,
+  127, 125, 119, 108, 93, 74, 51, 26,
+  0, -27, -52, -75, -94, -109, -120, -126,
+  -128, -126, -122, -116, -109, -102, -97, -92,
+  -90, -89, -89, -91, -94, -96, -99, -100,
+  -101, -100, -98, -96, -93, -89, -86, -83,
+  -81, -79, -79, -79, -80, -81, -82, -83,
+  -83, -83, -82, -80, -78, -76, -73, -71,
+  -69, -67, -66, -66, -66, -66, -67, -67,
+  -68, -67, -67, -65, -64, -62, -59, -57,
+  -55, -54, -53, -52, -52, -52, -52, -52,
+  -52, -52, -52, -51, -49, -48, -46, -44,
+  -42, -40, -39, -38, -37, -37, -37, -37,
+  -37, -37, -37, -36, -35, -34, -32, -30,
+  -28, -26, -25, -24, -23, -23, -23, -23,
+  -23, -23, -22, -22, -21, -19, -18, -16,
+  -14, -13, -11, -10, -9, -8, -8, -8,
+  -8, -8, -8, -7, -6, -5, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullTri3.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullTri3.h
new file mode 100644
index 0000000..236e937
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullTri3.h	
@@ -0,0 +1,34 @@
+int8_t fullTri3[256] = {
+  0, 2, 4, 6, 8, 10, 12, 14,
+  16, 18, 20, 22, 23, 25, 27, 28,
+  29, 31, 32, 33, 34, 35, 35, 36,
+  37, 37, 38, 38, 38, 38, 39, 39,
+  39, 39, 39, 38, 38, 38, 38, 38,
+  38, 38, 38, 38, 38, 38, 38, 38,
+  39, 39, 40, 40, 41, 42, 43, 44,
+  45, 46, 47, 49, 51, 52, 54, 56,
+  58, 61, 63, 65, 68, 70, 73, 76,
+  79, 81, 84, 87, 90, 93, 96, 98,
+  101, 104, 106, 109, 111, 114, 116, 118,
+  120, 121, 123, 124, 125, 126, 126, 127,
+  127, 127, 126, 126, 125, 124, 122, 120,
+  118, 116, 113, 110, 107, 104, 100, 96,
+  92, 87, 83, 78, 72, 67, 62, 56,
+  50, 44, 38, 32, 25, 19, 12, 6,
+  0, -7, -13, -20, -26, -33, -39, -45,
+  -51, -57, -63, -68, -73, -79, -84, -88,
+  -93, -97, -101, -105, -108, -111, -114, -117,
+  -119, -121, -123, -125, -126, -127, -127, -128,
+  -128, -128, -127, -127, -126, -125, -124, -122,
+  -121, -119, -117, -115, -112, -110, -107, -105,
+  -102, -99, -97, -94, -91, -88, -85, -82,
+  -80, -77, -74, -71, -69, -66, -64, -62,
+  -59, -57, -55, -53, -52, -50, -48, -47,
+  -46, -45, -44, -43, -42, -41, -41, -40,
+  -40, -39, -39, -39, -39, -39, -39, -39,
+  -39, -39, -39, -39, -39, -39, -40, -40,
+  -40, -40, -40, -39, -39, -39, -39, -38,
+  -38, -37, -36, -36, -35, -34, -33, -32,
+  -30, -29, -28, -26, -24, -23, -21, -19,
+  -17, -15, -13, -11, -9, -7, -5, -3
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullTri7.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullTri7.h
new file mode 100644
index 0000000..ed0af55
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullTri7.h	
@@ -0,0 +1,34 @@
+int8_t fullTri7[256] = {
+  0, 1, 3, 5, 7, 8, 10, 11,
+  12, 13, 14, 15, 15, 15, 15, 16,
+  16, 16, 16, 16, 16, 16, 16, 17,
+  17, 18, 19, 20, 21, 23, 24, 26,
+  28, 30, 32, 34, 36, 38, 39, 41,
+  43, 44, 45, 46, 47, 47, 48, 48,
+  48, 48, 48, 48, 48, 47, 47, 47,
+  47, 47, 48, 49, 50, 51, 52, 54,
+  55, 57, 60, 62, 64, 66, 69, 71,
+  73, 75, 77, 79, 80, 81, 82, 82,
+  82, 82, 82, 81, 80, 80, 79, 78,
+  77, 76, 75, 75, 75, 76, 76, 78,
+  79, 81, 84, 87, 90, 94, 98, 102,
+  106, 110, 114, 117, 121, 123, 125, 127,
+  127, 127, 125, 122, 119, 114, 108, 101,
+  93, 84, 74, 63, 51, 39, 26, 13,
+  0, -14, -27, -40, -52, -64, -75, -85,
+  -94, -102, -109, -115, -120, -123, -126, -128,
+  -128, -128, -126, -124, -122, -118, -115, -111,
+  -107, -103, -99, -95, -91, -88, -85, -82,
+  -80, -79, -77, -77, -76, -76, -76, -77,
+  -78, -79, -80, -81, -81, -82, -83, -83,
+  -83, -83, -83, -82, -81, -80, -78, -76,
+  -74, -72, -70, -67, -65, -63, -61, -58,
+  -56, -55, -53, -52, -51, -50, -49, -48,
+  -48, -48, -48, -48, -49, -49, -49, -49,
+  -49, -49, -49, -48, -48, -47, -46, -45,
+  -44, -42, -40, -39, -37, -35, -33, -31,
+  -29, -27, -25, -24, -22, -21, -20, -19,
+  -18, -18, -17, -17, -17, -17, -17, -17,
+  -17, -17, -16, -16, -16, -16, -15, -14,
+  -13, -12, -11, -9, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullTriangle.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullTriangle.h
new file mode 100644
index 0000000..04cb022
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/fullTriangle.h	
@@ -0,0 +1,34 @@
+int8_t fullTriangle[256] = {
+  0, 1, 3, 5, 7, 9, 11, 13,
+  15, 17, 19, 21, 23, 25, 27, 29,
+  31, 33, 35, 37, 39, 41, 43, 45,
+  47, 49, 51, 53, 55, 57, 59, 61,
+  63, 65, 67, 69, 71, 73, 75, 77,
+  79, 81, 83, 85, 87, 89, 91, 93,
+  95, 97, 99, 101, 103, 105, 107, 109,
+  111, 113, 115, 117, 119, 121, 123, 125,
+  127, 125, 123, 121, 119, 117, 115, 113,
+  111, 109, 107, 105, 103, 101, 99, 97,
+  95, 93, 91, 89, 87, 85, 83, 81,
+  79, 77, 75, 73, 71, 69, 67, 65,
+  63, 61, 59, 57, 55, 53, 51, 49,
+  47, 45, 43, 41, 39, 37, 35, 33,
+  31, 29, 27, 25, 23, 21, 19, 17,
+  15, 13, 11, 9, 7, 5, 3, 1,
+  0, -2, -4, -6, -8, -10, -12, -14,
+  -16, -18, -20, -22, -24, -26, -28, -30,
+  -32, -34, -36, -38, -40, -42, -44, -46,
+  -48, -50, -52, -54, -56, -58, -60, -62,
+  -64, -66, -68, -70, -72, -74, -76, -78,
+  -80, -82, -84, -86, -88, -90, -92, -94,
+  -96, -98, -100, -102, -104, -106, -108, -110,
+  -112, -114, -116, -118, -120, -122, -124, -126,
+  -128, -126, -124, -122, -120, -118, -116, -114,
+  -112, -110, -108, -106, -104, -102, -100, -98,
+  -96, -94, -92, -90, -88, -86, -84, -82,
+  -80, -78, -76, -74, -72, -70, -68, -66,
+  -64, -62, -60, -58, -56, -54, -52, -50,
+  -48, -46, -44, -42, -40, -38, -36, -34,
+  -32, -30, -28, -26, -24, -22, -20, -18,
+  -16, -14, -12, -10, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/generateWavetables.py b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/generateWavetables.py
new file mode 100644
index 0000000..905593f
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_interrupts/generateWavetables.py	
@@ -0,0 +1,101 @@
+## This file generates headers with lookup tables for various waveforms
+## Add your own.
+
+import math
+
+def phaseSteps(maxPhase, length=256):
+    steps = range(0, length) 
+    steps = [1.0*x/length * 2.0*math.pi * (maxPhase/360.0) for x in steps]
+    return(steps)
+
+def scaleAndRound(data, scale=255, signedInt=True):
+    data = [0.0+x-min(data) for x in data]
+    data = [1.0*x/max(data)*scale for x in data]
+    data = [int(round(x)) for x in data]
+    if signedInt:
+        data = [x-(scale+1)/2 for x in data]
+    return(data)
+
+def makeSin(maxPhase, length=256):
+    sinus = [math.sin(x) for x in phaseSteps(maxPhase, length)]
+    return(sinus)
+
+def prettyPrint(data, perLine = 8):
+    outString = ""
+    for i in range(len(data) / perLine):
+        strings = [str(x) for x in data[perLine*i:(perLine*i+perLine)]]
+        outString += "\t" + ", ".join(strings) + ",\n"
+    outString = outString[:-2] + "\n" # drop the final comma
+    return(outString)
+
+def writeHeader(fileName, dataName, data, signedInt=True):
+    outfile = open(fileName, "w")
+    if signedInt:
+        outfile.write("int8_t {}[{:d}] = {{ \n".format(dataName, len(data)))
+    else:
+        outfile.write("uint8_t {}[{:d}] = {{ \n".format(dataName, len(data)))
+    outfile.write(prettyPrint(data))
+    outfile.write("};\n")
+    outfile.close()
+
+def bandlimitedSawtooth(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    sign = 1.0
+    for k in range(1, numberPartials+1):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] += sign * math.sin(phases[i]) / k
+        sign = sign * -1
+    return(wave)
+
+def bandlimitedSquare(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    for k in range(1, numberPartials*2, 2):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] +=  math.sin(phases[i]) / k
+    return(wave)
+
+def bandlimitedTriangle(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    sign = 1.0
+    for k in range(1, numberPartials*2, 2):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] += sign * math.sin(phases[i]) / k**2
+        sign = sign * -1
+    return(wave)
+
+
+
+if __name__ == "__main__":
+    
+    ## Full-waves, full 256 bytes, 0-255 range
+    writeHeader("fullSine.h", 'fullSine', scaleAndRound(makeSin(360)))
+
+    triangleWave = range(0,64)
+    triangleWave.extend(range(64, -64, -1))
+    triangleWave.extend(range(-64, 0, 1))
+    triangleWave = scaleAndRound(triangleWave)
+    writeHeader("fullTriangle.h", 'fullTriangle', triangleWave)
+
+    for numberFrequencies in [3,7,15]:
+        saw = scaleAndRound(bandlimitedSawtooth(360, numberFrequencies))
+        writeHeader("fullSaw{}.h".format(numberFrequencies), 
+                    'fullSaw{}'.format(numberFrequencies), saw)
+        tri = scaleAndRound(bandlimitedTriangle(360, numberFrequencies))
+        writeHeader("fullTri{}.h".format(numberFrequencies), 
+                    'fullTri{}'.format(numberFrequencies), tri)
+        square = scaleAndRound(bandlimitedSquare(360, numberFrequencies))
+        writeHeader("fullSquare{}.h".format(numberFrequencies), 
+                    'fullSquare{}'.format(numberFrequencies), square)
+
+    ## Note that if you define / use too many different waveforms, 
+    ## and you don't store them in PROGMEM in your AVR C routines,
+    ## you might run the chip out of RAM, which causes strange and
+    ## nearly impossible-to-diagnose glitches.
+    
+    ## So here we're breaking each waveform up into its own include file.
+    ## There are ways of storing them all in program memory, and we'll
+    ##  see examples of that in later chapters.
+    
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/Makefile b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/dds_saw15.c b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/dds_saw15.c
new file mode 100644
index 0000000..35216e0
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/dds_saw15.c	
@@ -0,0 +1,56 @@
+                                           /* Direct-digital synthesis */
+
+// ------- Preamble -------- //
+#include <avr/io.h>                        /* Defines pins, ports, etc */
+#include <util/delay.h>                     /* Functions to waste time */
+#include <avr/power.h>
+
+#include "pinDefines.h"
+
+#include "fullSaw15.h"
+
+static inline void initTimer0(void) {
+  TCCR0A |= (1 << COM0A1);                      /* PWM output on OCR0A */
+  SPEAKER_DDR |= (1 << SPEAKER);               /* enable output on pin */
+
+  TCCR0A |= (1 << WGM00);                             /* Fast PWM mode */
+  TCCR0A |= (1 << WGM01);                       /* Fast PWM mode, pt.2 */
+
+  TCCR0B |= (1 << CS00);                    /* Clock with /1 prescaler */
+}
+
+int main(void) {
+
+  uint16_t accumulator = 0;
+  uint16_t accumulatorSteps = 880;                    /* approx 440 Hz */
+  uint8_t waveStep;
+  int8_t pwmValue;
+
+  // -------- Inits --------- //
+
+  clock_prescale_set(clock_div_1);                  /* CPU clock 8 MHz */
+  initTimer0();
+  BUTTON_PORT |= (1 << BUTTON);                    /* pullup on button */
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    if (bit_is_clear(BUTTON_PIN, BUTTON)) {
+
+      SPEAKER_DDR |= (1 << SPEAKER);                 /* enable speaker */
+      accumulator += accumulatorSteps;          /* advance accumulator */
+      waveStep = accumulator >> 8;           /* which entry in lookup? */
+      pwmValue = fullSaw15[waveStep];                 /* lookup voltage */
+
+      loop_until_bit_is_set(TIFR0, TOV0);        /* wait for PWM cycle */
+      OCR0A = 128 + pwmValue;                     /* set new PWM value */
+      TIFR0 |= (1 << TOV0);                  /* reset PWM overflow bit */
+    }
+
+    else {                                       /* button not pressed */
+      SPEAKER_DDR &= ~(1 << SPEAKER);              /* disable speaker */
+    }
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSaw15.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSaw15.h
new file mode 100644
index 0000000..69e64a3
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSaw15.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw15[256] = {
+  0, 1, 3, 4, 5, 6, 7, 7,
+  7, 7, 7, 7, 8, 9, 10, 12,
+  13, 15, 17, 18, 20, 21, 21, 22,
+  22, 22, 22, 22, 22, 23, 24, 25,
+  27, 29, 31, 33, 34, 35, 36, 36,
+  36, 36, 36, 36, 36, 37, 38, 39,
+  41, 43, 45, 47, 48, 50, 51, 51,
+  51, 51, 51, 51, 51, 51, 52, 53,
+  54, 56, 58, 61, 63, 64, 66, 66,
+  67, 66, 66, 65, 65, 65, 65, 66,
+  68, 70, 72, 75, 77, 79, 81, 82,
+  82, 82, 81, 80, 79, 78, 78, 78,
+  80, 82, 85, 88, 92, 95, 97, 99,
+  100, 99, 98, 95, 93, 90, 88, 88,
+  89, 91, 96, 101, 108, 115, 121, 125,
+  127, 125, 119, 108, 93, 74, 51, 26,
+  0, -27, -52, -75, -94, -109, -120, -126,
+  -128, -126, -122, -116, -109, -102, -97, -92,
+  -90, -89, -89, -91, -94, -96, -99, -100,
+  -101, -100, -98, -96, -93, -89, -86, -83,
+  -81, -79, -79, -79, -80, -81, -82, -83,
+  -83, -83, -82, -80, -78, -76, -73, -71,
+  -69, -67, -66, -66, -66, -66, -67, -67,
+  -68, -67, -67, -65, -64, -62, -59, -57,
+  -55, -54, -53, -52, -52, -52, -52, -52,
+  -52, -52, -52, -51, -49, -48, -46, -44,
+  -42, -40, -39, -38, -37, -37, -37, -37,
+  -37, -37, -37, -36, -35, -34, -32, -30,
+  -28, -26, -25, -24, -23, -23, -23, -23,
+  -23, -23, -22, -22, -21, -19, -18, -16,
+  -14, -13, -11, -10, -9, -8, -8, -8,
+  -8, -8, -8, -7, -6, -5, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSaw3.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSaw3.h
new file mode 100644
index 0000000..c0c1877
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSaw3.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw3[256] = {
+  0, 2, 4, 6, 8, 10, 12, 14,
+  16, 18, 20, 22, 23, 25, 27, 28,
+  29, 31, 32, 33, 34, 35, 35, 36,
+  37, 37, 38, 38, 38, 38, 39, 39,
+  39, 39, 39, 38, 38, 38, 38, 38,
+  38, 38, 38, 38, 38, 38, 38, 38,
+  39, 39, 40, 40, 41, 42, 43, 44,
+  45, 46, 47, 49, 51, 52, 54, 56,
+  58, 61, 63, 65, 68, 70, 73, 76,
+  79, 81, 84, 87, 90, 93, 96, 98,
+  101, 104, 106, 109, 111, 114, 116, 118,
+  120, 121, 123, 124, 125, 126, 126, 127,
+  127, 127, 126, 126, 125, 124, 122, 120,
+  118, 116, 113, 110, 107, 104, 100, 96,
+  92, 87, 83, 78, 72, 67, 62, 56,
+  50, 44, 38, 32, 25, 19, 12, 6,
+  0, -7, -13, -20, -26, -33, -39, -45,
+  -51, -57, -63, -68, -73, -79, -84, -88,
+  -93, -97, -101, -105, -108, -111, -114, -117,
+  -119, -121, -123, -125, -126, -127, -127, -128,
+  -128, -128, -127, -127, -126, -125, -124, -122,
+  -121, -119, -117, -115, -112, -110, -107, -105,
+  -102, -99, -97, -94, -91, -88, -85, -82,
+  -80, -77, -74, -71, -69, -66, -64, -62,
+  -59, -57, -55, -53, -52, -50, -48, -47,
+  -46, -45, -44, -43, -42, -41, -41, -40,
+  -40, -39, -39, -39, -39, -39, -39, -39,
+  -39, -39, -39, -39, -39, -39, -40, -40,
+  -40, -40, -40, -39, -39, -39, -39, -38,
+  -38, -37, -36, -36, -35, -34, -33, -32,
+  -30, -29, -28, -26, -24, -23, -21, -19,
+  -17, -15, -13, -11, -9, -7, -5, -3
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSaw7.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSaw7.h
new file mode 100644
index 0000000..ef38b9e
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSaw7.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw7[256] = {
+  0, 1, 3, 5, 7, 8, 10, 11,
+  12, 13, 14, 15, 15, 15, 15, 16,
+  16, 16, 16, 16, 16, 16, 16, 17,
+  17, 18, 19, 20, 21, 23, 24, 26,
+  28, 30, 32, 34, 36, 38, 39, 41,
+  43, 44, 45, 46, 47, 47, 48, 48,
+  48, 48, 48, 48, 48, 47, 47, 47,
+  47, 47, 48, 49, 50, 51, 52, 54,
+  55, 57, 60, 62, 64, 66, 69, 71,
+  73, 75, 77, 79, 80, 81, 82, 82,
+  82, 82, 82, 81, 80, 80, 79, 78,
+  77, 76, 75, 75, 75, 76, 76, 78,
+  79, 81, 84, 87, 90, 94, 98, 102,
+  106, 110, 114, 117, 121, 123, 125, 127,
+  127, 127, 125, 122, 119, 114, 108, 101,
+  93, 84, 74, 63, 51, 39, 26, 13,
+  0, -14, -27, -40, -52, -64, -75, -85,
+  -94, -102, -109, -115, -120, -123, -126, -128,
+  -128, -128, -126, -124, -122, -118, -115, -111,
+  -107, -103, -99, -95, -91, -88, -85, -82,
+  -80, -79, -77, -77, -76, -76, -76, -77,
+  -78, -79, -80, -81, -81, -82, -83, -83,
+  -83, -83, -83, -82, -81, -80, -78, -76,
+  -74, -72, -70, -67, -65, -63, -61, -58,
+  -56, -55, -53, -52, -51, -50, -49, -48,
+  -48, -48, -48, -48, -49, -49, -49, -49,
+  -49, -49, -49, -48, -48, -47, -46, -45,
+  -44, -42, -40, -39, -37, -35, -33, -31,
+  -29, -27, -25, -24, -22, -21, -20, -19,
+  -18, -18, -17, -17, -17, -17, -17, -17,
+  -17, -17, -16, -16, -16, -16, -15, -14,
+  -13, -12, -11, -9, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSine.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSine.h
new file mode 100644
index 0000000..430d305
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSine.h	
@@ -0,0 +1,34 @@
+int8_t fullSine[256] = {
+  0, 3, 6, 9, 12, 15, 18, 21,
+  24, 27, 30, 34, 37, 39, 42, 45,
+  48, 51, 54, 57, 60, 62, 65, 68,
+  70, 73, 75, 78, 80, 83, 85, 87,
+  90, 92, 94, 96, 98, 100, 102, 104,
+  106, 107, 109, 110, 112, 113, 115, 116,
+  117, 118, 120, 121, 122, 122, 123, 124,
+  125, 125, 126, 126, 126, 127, 127, 127,
+  127, 127, 127, 127, 126, 126, 126, 125,
+  125, 124, 123, 122, 122, 121, 120, 118,
+  117, 116, 115, 113, 112, 110, 109, 107,
+  106, 104, 102, 100, 98, 96, 94, 92,
+  90, 87, 85, 83, 80, 78, 75, 73,
+  70, 68, 65, 62, 60, 57, 54, 51,
+  48, 45, 42, 39, 37, 34, 30, 27,
+  24, 21, 18, 15, 12, 9, 6, 3,
+  0, -4, -7, -10, -13, -16, -19, -22,
+  -25, -28, -31, -35, -38, -40, -43, -46,
+  -49, -52, -55, -58, -61, -63, -66, -69,
+  -71, -74, -76, -79, -81, -84, -86, -88,
+  -91, -93, -95, -97, -99, -101, -103, -105,
+  -107, -108, -110, -111, -113, -114, -116, -117,
+  -118, -119, -121, -122, -123, -123, -124, -125,
+  -126, -126, -127, -127, -127, -128, -128, -128,
+  -128, -128, -128, -128, -127, -127, -127, -126,
+  -126, -125, -124, -123, -123, -122, -121, -119,
+  -118, -117, -116, -114, -113, -111, -110, -108,
+  -107, -105, -103, -101, -99, -97, -95, -93,
+  -91, -88, -86, -84, -81, -79, -76, -74,
+  -71, -69, -66, -63, -61, -58, -55, -52,
+  -49, -46, -43, -40, -38, -35, -31, -28,
+  -25, -22, -19, -16, -13, -10, -7, -4
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSquare15.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSquare15.h
new file mode 100644
index 0000000..94a3515
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSquare15.h	
@@ -0,0 +1,34 @@
+int8_t fullSquare15[256] = {
+  0, 1, 3, 4, 5, 6, 7, 7,
+  7, 7, 7, 7, 8, 9, 10, 12,
+  13, 15, 17, 18, 20, 21, 21, 22,
+  22, 22, 22, 22, 22, 23, 24, 25,
+  27, 29, 31, 33, 34, 35, 36, 36,
+  36, 36, 36, 36, 36, 37, 38, 39,
+  41, 43, 45, 47, 48, 50, 51, 51,
+  51, 51, 51, 51, 51, 51, 52, 53,
+  54, 56, 58, 61, 63, 64, 66, 66,
+  67, 66, 66, 65, 65, 65, 65, 66,
+  68, 70, 72, 75, 77, 79, 81, 82,
+  82, 82, 81, 80, 79, 78, 78, 78,
+  80, 82, 85, 88, 92, 95, 97, 99,
+  100, 99, 98, 95, 93, 90, 88, 88,
+  89, 91, 96, 101, 108, 115, 121, 125,
+  127, 125, 119, 108, 93, 74, 51, 26,
+  0, -27, -52, -75, -94, -109, -120, -126,
+  -128, -126, -122, -116, -109, -102, -97, -92,
+  -90, -89, -89, -91, -94, -96, -99, -100,
+  -101, -100, -98, -96, -93, -89, -86, -83,
+  -81, -79, -79, -79, -80, -81, -82, -83,
+  -83, -83, -82, -80, -78, -76, -73, -71,
+  -69, -67, -66, -66, -66, -66, -67, -67,
+  -68, -67, -67, -65, -64, -62, -59, -57,
+  -55, -54, -53, -52, -52, -52, -52, -52,
+  -52, -52, -52, -51, -49, -48, -46, -44,
+  -42, -40, -39, -38, -37, -37, -37, -37,
+  -37, -37, -37, -36, -35, -34, -32, -30,
+  -28, -26, -25, -24, -23, -23, -23, -23,
+  -23, -23, -22, -22, -21, -19, -18, -16,
+  -14, -13, -11, -10, -9, -8, -8, -8,
+  -8, -8, -8, -7, -6, -5, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSquare3.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSquare3.h
new file mode 100644
index 0000000..c20fa0a
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSquare3.h	
@@ -0,0 +1,34 @@
+int8_t fullSquare3[256] = {
+  0, 2, 4, 6, 8, 10, 12, 14,
+  16, 18, 20, 22, 23, 25, 27, 28,
+  29, 31, 32, 33, 34, 35, 35, 36,
+  37, 37, 38, 38, 38, 38, 39, 39,
+  39, 39, 39, 38, 38, 38, 38, 38,
+  38, 38, 38, 38, 38, 38, 38, 38,
+  39, 39, 40, 40, 41, 42, 43, 44,
+  45, 46, 47, 49, 51, 52, 54, 56,
+  58, 61, 63, 65, 68, 70, 73, 76,
+  79, 81, 84, 87, 90, 93, 96, 98,
+  101, 104, 106, 109, 111, 114, 116, 118,
+  120, 121, 123, 124, 125, 126, 126, 127,
+  127, 127, 126, 126, 125, 124, 122, 120,
+  118, 116, 113, 110, 107, 104, 100, 96,
+  92, 87, 83, 78, 72, 67, 62, 56,
+  50, 44, 38, 32, 25, 19, 12, 6,
+  0, -7, -13, -20, -26, -33, -39, -45,
+  -51, -57, -63, -68, -73, -79, -84, -88,
+  -93, -97, -101, -105, -108, -111, -114, -117,
+  -119, -121, -123, -125, -126, -127, -127, -128,
+  -128, -128, -127, -127, -126, -125, -124, -122,
+  -121, -119, -117, -115, -112, -110, -107, -105,
+  -102, -99, -97, -94, -91, -88, -85, -82,
+  -80, -77, -74, -71, -69, -66, -64, -62,
+  -59, -57, -55, -53, -52, -50, -48, -47,
+  -46, -45, -44, -43, -42, -41, -41, -40,
+  -40, -39, -39, -39, -39, -39, -39, -39,
+  -39, -39, -39, -39, -39, -39, -40, -40,
+  -40, -40, -40, -39, -39, -39, -39, -38,
+  -38, -37, -36, -36, -35, -34, -33, -32,
+  -30, -29, -28, -26, -24, -23, -21, -19,
+  -17, -15, -13, -11, -9, -7, -5, -3
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSquare7.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSquare7.h
new file mode 100644
index 0000000..43a679e
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullSquare7.h	
@@ -0,0 +1,34 @@
+int8_t fullSquare7[256] = {
+  0, 1, 3, 5, 7, 8, 10, 11,
+  12, 13, 14, 15, 15, 15, 15, 16,
+  16, 16, 16, 16, 16, 16, 16, 17,
+  17, 18, 19, 20, 21, 23, 24, 26,
+  28, 30, 32, 34, 36, 38, 39, 41,
+  43, 44, 45, 46, 47, 47, 48, 48,
+  48, 48, 48, 48, 48, 47, 47, 47,
+  47, 47, 48, 49, 50, 51, 52, 54,
+  55, 57, 60, 62, 64, 66, 69, 71,
+  73, 75, 77, 79, 80, 81, 82, 82,
+  82, 82, 82, 81, 80, 80, 79, 78,
+  77, 76, 75, 75, 75, 76, 76, 78,
+  79, 81, 84, 87, 90, 94, 98, 102,
+  106, 110, 114, 117, 121, 123, 125, 127,
+  127, 127, 125, 122, 119, 114, 108, 101,
+  93, 84, 74, 63, 51, 39, 26, 13,
+  0, -14, -27, -40, -52, -64, -75, -85,
+  -94, -102, -109, -115, -120, -123, -126, -128,
+  -128, -128, -126, -124, -122, -118, -115, -111,
+  -107, -103, -99, -95, -91, -88, -85, -82,
+  -80, -79, -77, -77, -76, -76, -76, -77,
+  -78, -79, -80, -81, -81, -82, -83, -83,
+  -83, -83, -83, -82, -81, -80, -78, -76,
+  -74, -72, -70, -67, -65, -63, -61, -58,
+  -56, -55, -53, -52, -51, -50, -49, -48,
+  -48, -48, -48, -48, -49, -49, -49, -49,
+  -49, -49, -49, -48, -48, -47, -46, -45,
+  -44, -42, -40, -39, -37, -35, -33, -31,
+  -29, -27, -25, -24, -22, -21, -20, -19,
+  -18, -18, -17, -17, -17, -17, -17, -17,
+  -17, -17, -16, -16, -16, -16, -15, -14,
+  -13, -12, -11, -9, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullTri15.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullTri15.h
new file mode 100644
index 0000000..e227e64
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullTri15.h	
@@ -0,0 +1,34 @@
+int8_t fullTri15[256] = {
+  0, 1, 3, 4, 5, 6, 7, 7,
+  7, 7, 7, 7, 8, 9, 10, 12,
+  13, 15, 17, 18, 20, 21, 21, 22,
+  22, 22, 22, 22, 22, 23, 24, 25,
+  27, 29, 31, 33, 34, 35, 36, 36,
+  36, 36, 36, 36, 36, 37, 38, 39,
+  41, 43, 45, 47, 48, 50, 51, 51,
+  51, 51, 51, 51, 51, 51, 52, 53,
+  54, 56, 58, 61, 63, 64, 66, 66,
+  67, 66, 66, 65, 65, 65, 65, 66,
+  68, 70, 72, 75, 77, 79, 81, 82,
+  82, 82, 81, 80, 79, 78, 78, 78,
+  80, 82, 85, 88, 92, 95, 97, 99,
+  100, 99, 98, 95, 93, 90, 88, 88,
+  89, 91, 96, 101, 108, 115, 121, 125,
+  127, 125, 119, 108, 93, 74, 51, 26,
+  0, -27, -52, -75, -94, -109, -120, -126,
+  -128, -126, -122, -116, -109, -102, -97, -92,
+  -90, -89, -89, -91, -94, -96, -99, -100,
+  -101, -100, -98, -96, -93, -89, -86, -83,
+  -81, -79, -79, -79, -80, -81, -82, -83,
+  -83, -83, -82, -80, -78, -76, -73, -71,
+  -69, -67, -66, -66, -66, -66, -67, -67,
+  -68, -67, -67, -65, -64, -62, -59, -57,
+  -55, -54, -53, -52, -52, -52, -52, -52,
+  -52, -52, -52, -51, -49, -48, -46, -44,
+  -42, -40, -39, -38, -37, -37, -37, -37,
+  -37, -37, -37, -36, -35, -34, -32, -30,
+  -28, -26, -25, -24, -23, -23, -23, -23,
+  -23, -23, -22, -22, -21, -19, -18, -16,
+  -14, -13, -11, -10, -9, -8, -8, -8,
+  -8, -8, -8, -7, -6, -5, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullTri3.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullTri3.h
new file mode 100644
index 0000000..236e937
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullTri3.h	
@@ -0,0 +1,34 @@
+int8_t fullTri3[256] = {
+  0, 2, 4, 6, 8, 10, 12, 14,
+  16, 18, 20, 22, 23, 25, 27, 28,
+  29, 31, 32, 33, 34, 35, 35, 36,
+  37, 37, 38, 38, 38, 38, 39, 39,
+  39, 39, 39, 38, 38, 38, 38, 38,
+  38, 38, 38, 38, 38, 38, 38, 38,
+  39, 39, 40, 40, 41, 42, 43, 44,
+  45, 46, 47, 49, 51, 52, 54, 56,
+  58, 61, 63, 65, 68, 70, 73, 76,
+  79, 81, 84, 87, 90, 93, 96, 98,
+  101, 104, 106, 109, 111, 114, 116, 118,
+  120, 121, 123, 124, 125, 126, 126, 127,
+  127, 127, 126, 126, 125, 124, 122, 120,
+  118, 116, 113, 110, 107, 104, 100, 96,
+  92, 87, 83, 78, 72, 67, 62, 56,
+  50, 44, 38, 32, 25, 19, 12, 6,
+  0, -7, -13, -20, -26, -33, -39, -45,
+  -51, -57, -63, -68, -73, -79, -84, -88,
+  -93, -97, -101, -105, -108, -111, -114, -117,
+  -119, -121, -123, -125, -126, -127, -127, -128,
+  -128, -128, -127, -127, -126, -125, -124, -122,
+  -121, -119, -117, -115, -112, -110, -107, -105,
+  -102, -99, -97, -94, -91, -88, -85, -82,
+  -80, -77, -74, -71, -69, -66, -64, -62,
+  -59, -57, -55, -53, -52, -50, -48, -47,
+  -46, -45, -44, -43, -42, -41, -41, -40,
+  -40, -39, -39, -39, -39, -39, -39, -39,
+  -39, -39, -39, -39, -39, -39, -40, -40,
+  -40, -40, -40, -39, -39, -39, -39, -38,
+  -38, -37, -36, -36, -35, -34, -33, -32,
+  -30, -29, -28, -26, -24, -23, -21, -19,
+  -17, -15, -13, -11, -9, -7, -5, -3
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullTri7.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullTri7.h
new file mode 100644
index 0000000..ed0af55
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullTri7.h	
@@ -0,0 +1,34 @@
+int8_t fullTri7[256] = {
+  0, 1, 3, 5, 7, 8, 10, 11,
+  12, 13, 14, 15, 15, 15, 15, 16,
+  16, 16, 16, 16, 16, 16, 16, 17,
+  17, 18, 19, 20, 21, 23, 24, 26,
+  28, 30, 32, 34, 36, 38, 39, 41,
+  43, 44, 45, 46, 47, 47, 48, 48,
+  48, 48, 48, 48, 48, 47, 47, 47,
+  47, 47, 48, 49, 50, 51, 52, 54,
+  55, 57, 60, 62, 64, 66, 69, 71,
+  73, 75, 77, 79, 80, 81, 82, 82,
+  82, 82, 82, 81, 80, 80, 79, 78,
+  77, 76, 75, 75, 75, 76, 76, 78,
+  79, 81, 84, 87, 90, 94, 98, 102,
+  106, 110, 114, 117, 121, 123, 125, 127,
+  127, 127, 125, 122, 119, 114, 108, 101,
+  93, 84, 74, 63, 51, 39, 26, 13,
+  0, -14, -27, -40, -52, -64, -75, -85,
+  -94, -102, -109, -115, -120, -123, -126, -128,
+  -128, -128, -126, -124, -122, -118, -115, -111,
+  -107, -103, -99, -95, -91, -88, -85, -82,
+  -80, -79, -77, -77, -76, -76, -76, -77,
+  -78, -79, -80, -81, -81, -82, -83, -83,
+  -83, -83, -83, -82, -81, -80, -78, -76,
+  -74, -72, -70, -67, -65, -63, -61, -58,
+  -56, -55, -53, -52, -51, -50, -49, -48,
+  -48, -48, -48, -48, -49, -49, -49, -49,
+  -49, -49, -49, -48, -48, -47, -46, -45,
+  -44, -42, -40, -39, -37, -35, -33, -31,
+  -29, -27, -25, -24, -22, -21, -20, -19,
+  -18, -18, -17, -17, -17, -17, -17, -17,
+  -17, -17, -16, -16, -16, -16, -15, -14,
+  -13, -12, -11, -9, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullTriangle.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullTriangle.h
new file mode 100644
index 0000000..04cb022
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/fullTriangle.h	
@@ -0,0 +1,34 @@
+int8_t fullTriangle[256] = {
+  0, 1, 3, 5, 7, 9, 11, 13,
+  15, 17, 19, 21, 23, 25, 27, 29,
+  31, 33, 35, 37, 39, 41, 43, 45,
+  47, 49, 51, 53, 55, 57, 59, 61,
+  63, 65, 67, 69, 71, 73, 75, 77,
+  79, 81, 83, 85, 87, 89, 91, 93,
+  95, 97, 99, 101, 103, 105, 107, 109,
+  111, 113, 115, 117, 119, 121, 123, 125,
+  127, 125, 123, 121, 119, 117, 115, 113,
+  111, 109, 107, 105, 103, 101, 99, 97,
+  95, 93, 91, 89, 87, 85, 83, 81,
+  79, 77, 75, 73, 71, 69, 67, 65,
+  63, 61, 59, 57, 55, 53, 51, 49,
+  47, 45, 43, 41, 39, 37, 35, 33,
+  31, 29, 27, 25, 23, 21, 19, 17,
+  15, 13, 11, 9, 7, 5, 3, 1,
+  0, -2, -4, -6, -8, -10, -12, -14,
+  -16, -18, -20, -22, -24, -26, -28, -30,
+  -32, -34, -36, -38, -40, -42, -44, -46,
+  -48, -50, -52, -54, -56, -58, -60, -62,
+  -64, -66, -68, -70, -72, -74, -76, -78,
+  -80, -82, -84, -86, -88, -90, -92, -94,
+  -96, -98, -100, -102, -104, -106, -108, -110,
+  -112, -114, -116, -118, -120, -122, -124, -126,
+  -128, -126, -124, -122, -120, -118, -116, -114,
+  -112, -110, -108, -106, -104, -102, -100, -98,
+  -96, -94, -92, -90, -88, -86, -84, -82,
+  -80, -78, -76, -74, -72, -70, -68, -66,
+  -64, -62, -60, -58, -56, -54, -52, -50,
+  -48, -46, -44, -42, -40, -38, -36, -34,
+  -32, -30, -28, -26, -24, -22, -20, -18,
+  -16, -14, -12, -10, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/generateWavetables.py b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/generateWavetables.py
new file mode 100644
index 0000000..905593f
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dds_saw15/generateWavetables.py	
@@ -0,0 +1,101 @@
+## This file generates headers with lookup tables for various waveforms
+## Add your own.
+
+import math
+
+def phaseSteps(maxPhase, length=256):
+    steps = range(0, length) 
+    steps = [1.0*x/length * 2.0*math.pi * (maxPhase/360.0) for x in steps]
+    return(steps)
+
+def scaleAndRound(data, scale=255, signedInt=True):
+    data = [0.0+x-min(data) for x in data]
+    data = [1.0*x/max(data)*scale for x in data]
+    data = [int(round(x)) for x in data]
+    if signedInt:
+        data = [x-(scale+1)/2 for x in data]
+    return(data)
+
+def makeSin(maxPhase, length=256):
+    sinus = [math.sin(x) for x in phaseSteps(maxPhase, length)]
+    return(sinus)
+
+def prettyPrint(data, perLine = 8):
+    outString = ""
+    for i in range(len(data) / perLine):
+        strings = [str(x) for x in data[perLine*i:(perLine*i+perLine)]]
+        outString += "\t" + ", ".join(strings) + ",\n"
+    outString = outString[:-2] + "\n" # drop the final comma
+    return(outString)
+
+def writeHeader(fileName, dataName, data, signedInt=True):
+    outfile = open(fileName, "w")
+    if signedInt:
+        outfile.write("int8_t {}[{:d}] = {{ \n".format(dataName, len(data)))
+    else:
+        outfile.write("uint8_t {}[{:d}] = {{ \n".format(dataName, len(data)))
+    outfile.write(prettyPrint(data))
+    outfile.write("};\n")
+    outfile.close()
+
+def bandlimitedSawtooth(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    sign = 1.0
+    for k in range(1, numberPartials+1):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] += sign * math.sin(phases[i]) / k
+        sign = sign * -1
+    return(wave)
+
+def bandlimitedSquare(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    for k in range(1, numberPartials*2, 2):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] +=  math.sin(phases[i]) / k
+    return(wave)
+
+def bandlimitedTriangle(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    sign = 1.0
+    for k in range(1, numberPartials*2, 2):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] += sign * math.sin(phases[i]) / k**2
+        sign = sign * -1
+    return(wave)
+
+
+
+if __name__ == "__main__":
+    
+    ## Full-waves, full 256 bytes, 0-255 range
+    writeHeader("fullSine.h", 'fullSine', scaleAndRound(makeSin(360)))
+
+    triangleWave = range(0,64)
+    triangleWave.extend(range(64, -64, -1))
+    triangleWave.extend(range(-64, 0, 1))
+    triangleWave = scaleAndRound(triangleWave)
+    writeHeader("fullTriangle.h", 'fullTriangle', triangleWave)
+
+    for numberFrequencies in [3,7,15]:
+        saw = scaleAndRound(bandlimitedSawtooth(360, numberFrequencies))
+        writeHeader("fullSaw{}.h".format(numberFrequencies), 
+                    'fullSaw{}'.format(numberFrequencies), saw)
+        tri = scaleAndRound(bandlimitedTriangle(360, numberFrequencies))
+        writeHeader("fullTri{}.h".format(numberFrequencies), 
+                    'fullTri{}'.format(numberFrequencies), tri)
+        square = scaleAndRound(bandlimitedSquare(360, numberFrequencies))
+        writeHeader("fullSquare{}.h".format(numberFrequencies), 
+                    'fullSquare{}'.format(numberFrequencies), square)
+
+    ## Note that if you define / use too many different waveforms, 
+    ## and you don't store them in PROGMEM in your AVR C routines,
+    ## you might run the chip out of RAM, which causes strange and
+    ## nearly impossible-to-diagnose glitches.
+    
+    ## So here we're breaking each waveform up into its own include file.
+    ## There are ways of storing them all in program memory, and we'll
+    ##  see examples of that in later chapters.
+    
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dialTone/Makefile b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dialTone/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dialTone/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dialTone/dialTone.c b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dialTone/dialTone.c
new file mode 100644
index 0000000..eb22e8a
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dialTone/dialTone.c	
@@ -0,0 +1,85 @@
+/* Direct-digital synthesis */
+
+// ------- Preamble -------- //
+#include <avr/io.h>		/* Defines pins, ports, etc */
+#include <util/delay.h>		/* Functions to waste time */
+#include <avr/interrupt.h>	
+#include <avr/power.h>
+#include "pinDefines.h"
+#include "macros.h"
+#include "fullSine.h"
+
+
+static inline void initTimer0(void){
+  set_bit(TCCR0A, COM0A1);	/* PWM output on OCR0A */
+  set_bit(SPEAKER_DDR, SPEAKER); /* enable output on pin */
+
+  set_bit(TCCR0A, WGM00);	/* Fast PWM mode */
+  set_bit(TCCR0A, WGM01);	/* Fast PWM mode, pt.2 */
+  
+  set_bit(TCCR0B, CS00);	/* Clock with /1 prescaler */
+}
+
+static inline void pollButton(void){
+  if (bit_is_clear(BUTTON_PIN, BUTTON)) {
+    set_bit(SPEAKER_DDR, SPEAKER); /* enable output on pin */
+    clear_bit(LED_PORT, LED0);
+  }
+  else {
+    clear_bit(SPEAKER_DDR, SPEAKER); /* disable output on pin */
+    set_bit(LED_PORT, LED0);
+  }
+}
+
+static inline void initLED(void){
+  set_bit(LED_DDR, LED0);	/* LED on for diagnostics */
+  set_bit(LED_PORT, LED0);
+  _delay_ms(100);
+  clear_bit(LED_PORT, LED0);
+}
+
+int main(void){
+
+  volatile  uint16_t accumulator0;  
+  volatile  uint16_t accumulator1;  
+  volatile  uint16_t tuningWord0;
+  volatile  uint16_t tuningWord1;
+  volatile  uint16_t mixer;
+
+  // -------- Inits --------- //
+  
+  clock_prescale_set(clock_div_1);                  /* CPU clock 8 MHz */
+  initLED();
+  initTimer0();
+  
+  set_bit(BUTTON_PORT, BUTTON);	/* pullup on button */
+  set_bit(SPEAKER_DDR, SPEAKER); /* speaker output */
+  
+  tuningWord0 = 440*2;		/* Dial tone frequencies */
+  tuningWord1 = 350*2;
+  
+  // ------ Event loop ------ //
+  while(1){		       
+    
+    loop_until_bit_is_set(TIFR0, TOV0); /* wait until overflow bit set */
+    set_bit(TIFR0, TOV0);		/* writing set should reset... */
+
+    //  Note that this bit has to be pretty fast... we have only 256 cycles to
+    //  set the next value in OCR0A, or we may hear a glitch
+
+    accumulator0 += tuningWord0;	/* take tuningWord steps forward */
+    accumulator1 += tuningWord1;	/* take tuningWord steps forward */
+
+    mixer = fullSine[(uint8_t) (accumulator0 >> 8)]; /* add together */
+    mixer += fullSine[(uint8_t) (accumulator1 >> 8)];
+    OCR0A = 128 + (mixer >> 1);		/* divide by 2, the fast way */
+    
+    pollButton();
+    
+
+  } /* End event loop */
+  return 0;		      /* This line is never reached  */
+}
+
+
+
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dialTone/fullSine.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dialTone/fullSine.h
new file mode 100644
index 0000000..099a701
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dialTone/fullSine.h	
@@ -0,0 +1,34 @@
+int8_t fullSine[256] = { 
+	0, 3, 6, 9, 12, 15, 18, 21,
+	24, 27, 30, 34, 37, 39, 42, 45,
+	48, 51, 54, 57, 60, 62, 65, 68,
+	70, 73, 75, 78, 80, 83, 85, 87,
+	90, 92, 94, 96, 98, 100, 102, 104,
+	106, 107, 109, 110, 112, 113, 115, 116,
+	117, 118, 120, 121, 122, 122, 123, 124,
+	125, 125, 126, 126, 126, 127, 127, 127,
+	127, 127, 127, 127, 126, 126, 126, 125,
+	125, 124, 123, 122, 122, 121, 120, 118,
+	117, 116, 115, 113, 112, 110, 109, 107,
+	106, 104, 102, 100, 98, 96, 94, 92,
+	90, 87, 85, 83, 80, 78, 75, 73,
+	70, 68, 65, 62, 60, 57, 54, 51,
+	48, 45, 42, 39, 37, 34, 30, 27,
+	24, 21, 18, 15, 12, 9, 6, 3,
+	0, -4, -7, -10, -13, -16, -19, -22,
+	-25, -28, -31, -35, -38, -40, -43, -46,
+	-49, -52, -55, -58, -61, -63, -66, -69,
+	-71, -74, -76, -79, -81, -84, -86, -88,
+	-91, -93, -95, -97, -99, -101, -103, -105,
+	-107, -108, -110, -111, -113, -114, -116, -117,
+	-118, -119, -121, -122, -123, -123, -124, -125,
+	-126, -126, -127, -127, -127, -128, -128, -128,
+	-128, -128, -128, -128, -127, -127, -127, -126,
+	-126, -125, -124, -123, -123, -122, -121, -119,
+	-118, -117, -116, -114, -113, -111, -110, -108,
+	-107, -105, -103, -101, -99, -97, -95, -93,
+	-91, -88, -86, -84, -81, -79, -76, -74,
+	-71, -69, -66, -63, -61, -58, -55, -52,
+	-49, -46, -43, -40, -38, -35, -31, -28,
+	-25, -22, -19, -16, -13, -10, -7, -4
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dialTone/generateWavetables.py b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dialTone/generateWavetables.py
new file mode 100644
index 0000000..905593f
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/dialTone/generateWavetables.py	
@@ -0,0 +1,101 @@
+## This file generates headers with lookup tables for various waveforms
+## Add your own.
+
+import math
+
+def phaseSteps(maxPhase, length=256):
+    steps = range(0, length) 
+    steps = [1.0*x/length * 2.0*math.pi * (maxPhase/360.0) for x in steps]
+    return(steps)
+
+def scaleAndRound(data, scale=255, signedInt=True):
+    data = [0.0+x-min(data) for x in data]
+    data = [1.0*x/max(data)*scale for x in data]
+    data = [int(round(x)) for x in data]
+    if signedInt:
+        data = [x-(scale+1)/2 for x in data]
+    return(data)
+
+def makeSin(maxPhase, length=256):
+    sinus = [math.sin(x) for x in phaseSteps(maxPhase, length)]
+    return(sinus)
+
+def prettyPrint(data, perLine = 8):
+    outString = ""
+    for i in range(len(data) / perLine):
+        strings = [str(x) for x in data[perLine*i:(perLine*i+perLine)]]
+        outString += "\t" + ", ".join(strings) + ",\n"
+    outString = outString[:-2] + "\n" # drop the final comma
+    return(outString)
+
+def writeHeader(fileName, dataName, data, signedInt=True):
+    outfile = open(fileName, "w")
+    if signedInt:
+        outfile.write("int8_t {}[{:d}] = {{ \n".format(dataName, len(data)))
+    else:
+        outfile.write("uint8_t {}[{:d}] = {{ \n".format(dataName, len(data)))
+    outfile.write(prettyPrint(data))
+    outfile.write("};\n")
+    outfile.close()
+
+def bandlimitedSawtooth(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    sign = 1.0
+    for k in range(1, numberPartials+1):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] += sign * math.sin(phases[i]) / k
+        sign = sign * -1
+    return(wave)
+
+def bandlimitedSquare(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    for k in range(1, numberPartials*2, 2):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] +=  math.sin(phases[i]) / k
+    return(wave)
+
+def bandlimitedTriangle(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    sign = 1.0
+    for k in range(1, numberPartials*2, 2):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] += sign * math.sin(phases[i]) / k**2
+        sign = sign * -1
+    return(wave)
+
+
+
+if __name__ == "__main__":
+    
+    ## Full-waves, full 256 bytes, 0-255 range
+    writeHeader("fullSine.h", 'fullSine', scaleAndRound(makeSin(360)))
+
+    triangleWave = range(0,64)
+    triangleWave.extend(range(64, -64, -1))
+    triangleWave.extend(range(-64, 0, 1))
+    triangleWave = scaleAndRound(triangleWave)
+    writeHeader("fullTriangle.h", 'fullTriangle', triangleWave)
+
+    for numberFrequencies in [3,7,15]:
+        saw = scaleAndRound(bandlimitedSawtooth(360, numberFrequencies))
+        writeHeader("fullSaw{}.h".format(numberFrequencies), 
+                    'fullSaw{}'.format(numberFrequencies), saw)
+        tri = scaleAndRound(bandlimitedTriangle(360, numberFrequencies))
+        writeHeader("fullTri{}.h".format(numberFrequencies), 
+                    'fullTri{}'.format(numberFrequencies), tri)
+        square = scaleAndRound(bandlimitedSquare(360, numberFrequencies))
+        writeHeader("fullSquare{}.h".format(numberFrequencies), 
+                    'fullSquare{}'.format(numberFrequencies), square)
+
+    ## Note that if you define / use too many different waveforms, 
+    ## and you don't store them in PROGMEM in your AVR C routines,
+    ## you might run the chip out of RAM, which causes strange and
+    ## nearly impossible-to-diagnose glitches.
+    
+    ## So here we're breaking each waveform up into its own include file.
+    ## There are ways of storing them all in program memory, and we'll
+    ##  see examples of that in later chapters.
+    
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/Makefile b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fatSaw.c b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fatSaw.c
new file mode 100644
index 0000000..4b978b2
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fatSaw.c	
@@ -0,0 +1,56 @@
+/*
+   Direct-digital synthesis
+   Phasing saw waves demo
+
+*/
+
+#include "fatSaw.h"
+
+int main(void) {
+
+  uint16_t accumulators[NUMBER_OSCILLATORS];
+  uint8_t waveStep;
+  int16_t mixer = 0;
+  uint8_t i;
+
+  // -------- Inits --------- //
+
+  clock_prescale_set(clock_div_1);                  /* CPU clock 8 MHz */
+  initTimer0();
+  SPEAKER_DDR |= (1 << SPEAKER);                     /* speaker output */
+  LED_DDR |= (1 << LED0);
+
+  // Init all to same phase
+  for (i = 0; i < NUMBER_OSCILLATORS; i++) {
+    accumulators[i] = 0;
+  }
+
+  // ------ Event loop ------ //
+  while (1) {
+
+                                   /* Load in the PWM value when ready */
+    loop_until_bit_is_set(TIFR0, TOV0); /* wait until overflow bit set */
+    OCR0A = 128 + mixer;           /* signed-integers need shifting up */
+    TIFR0 |= (1 << TOV0);                   /* re-set the overflow bit */
+
+                              /* Update all accumulators, mix together */
+    mixer = 0;
+    for (i = 0; i < NUMBER_OSCILLATORS; i++) {
+      accumulators[i] += BASEPITCH;
+      waveStep = accumulators[i] >> 8;
+
+      // Add extra phase increment.
+      // Makes shifting overtones when
+      // different frequency components add, subtract
+      if (waveStep == 0) {                   /* roughly once per cycle */
+        accumulators[i] += PHASE_RATE * i;          /* add extra phase */
+      }
+
+      mixer += fullSaw15[waveStep];
+    }
+    mixer = mixer >> OSCILLATOR_SHIFT;
+                                 /* Dividing by bitshift is very fast. */
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fatSaw.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fatSaw.h
new file mode 100644
index 0000000..6bb7665
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fatSaw.h	
@@ -0,0 +1,36 @@
+
+// ------- Preamble -------- //
+#include <avr/io.h>		/* Defines pins, ports, etc */
+#include <util/delay.h>		/* Functions to waste time */
+#include <avr/interrupt.h>	
+#include <avr/power.h>
+#include "pinDefines.h"
+#include "macros.h"
+#include "fullSaw15.h"
+
+#define BASEPITCH       220 /* in tuningWord steps, which are ~1/2 Hz */
+#define PHASE_RATE      7   /* controls speed of phasing effect */
+
+#define NUMBER_OSCILLATORS  4
+/* 2 and 4 work just fine.
+   8 and 16 take too long to maintain our 31.25kHz sample rate
+   so the pitch shifts downwards and there's all sorts of aliasing.  
+   If you're just after scary sounds, 8 and 16 are awesome, but you may want 
+   to increase the BASEPITCH to compensate. */
+
+#define  OSCILLATOR_SHIFT   2
+/* This is the number of bits to shift when volume mixing. 
+   2**OSCILLATOR_SHIFT = NUMBER_OSCILLATORS 
+   If you don't change this to match the number of oscillators, you'll
+   get clipping and digital distortion.  */
+
+
+static inline void initTimer0(void){
+  set_bit(TCCR0A, WGM00);	/* Fast PWM mode */
+  set_bit(TCCR0A, WGM01);	/* Fast PWM mode */
+
+  set_bit(TCCR0A, COM0A1);	/* PWM output on OCR0A */
+  set_bit(SPEAKER_DDR, SPEAKER); /* enable output on pin */
+
+  set_bit(TCCR0B, CS00);	/* Clock with /1 prescaler */
+}
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fullSaw15.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fullSaw15.h
new file mode 100644
index 0000000..69e64a3
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fullSaw15.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw15[256] = {
+  0, 1, 3, 4, 5, 6, 7, 7,
+  7, 7, 7, 7, 8, 9, 10, 12,
+  13, 15, 17, 18, 20, 21, 21, 22,
+  22, 22, 22, 22, 22, 23, 24, 25,
+  27, 29, 31, 33, 34, 35, 36, 36,
+  36, 36, 36, 36, 36, 37, 38, 39,
+  41, 43, 45, 47, 48, 50, 51, 51,
+  51, 51, 51, 51, 51, 51, 52, 53,
+  54, 56, 58, 61, 63, 64, 66, 66,
+  67, 66, 66, 65, 65, 65, 65, 66,
+  68, 70, 72, 75, 77, 79, 81, 82,
+  82, 82, 81, 80, 79, 78, 78, 78,
+  80, 82, 85, 88, 92, 95, 97, 99,
+  100, 99, 98, 95, 93, 90, 88, 88,
+  89, 91, 96, 101, 108, 115, 121, 125,
+  127, 125, 119, 108, 93, 74, 51, 26,
+  0, -27, -52, -75, -94, -109, -120, -126,
+  -128, -126, -122, -116, -109, -102, -97, -92,
+  -90, -89, -89, -91, -94, -96, -99, -100,
+  -101, -100, -98, -96, -93, -89, -86, -83,
+  -81, -79, -79, -79, -80, -81, -82, -83,
+  -83, -83, -82, -80, -78, -76, -73, -71,
+  -69, -67, -66, -66, -66, -66, -67, -67,
+  -68, -67, -67, -65, -64, -62, -59, -57,
+  -55, -54, -53, -52, -52, -52, -52, -52,
+  -52, -52, -52, -51, -49, -48, -46, -44,
+  -42, -40, -39, -38, -37, -37, -37, -37,
+  -37, -37, -37, -36, -35, -34, -32, -30,
+  -28, -26, -25, -24, -23, -23, -23, -23,
+  -23, -23, -22, -22, -21, -19, -18, -16,
+  -14, -13, -11, -10, -9, -8, -8, -8,
+  -8, -8, -8, -7, -6, -5, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fullSaw3.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fullSaw3.h
new file mode 100644
index 0000000..c0c1877
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fullSaw3.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw3[256] = {
+  0, 2, 4, 6, 8, 10, 12, 14,
+  16, 18, 20, 22, 23, 25, 27, 28,
+  29, 31, 32, 33, 34, 35, 35, 36,
+  37, 37, 38, 38, 38, 38, 39, 39,
+  39, 39, 39, 38, 38, 38, 38, 38,
+  38, 38, 38, 38, 38, 38, 38, 38,
+  39, 39, 40, 40, 41, 42, 43, 44,
+  45, 46, 47, 49, 51, 52, 54, 56,
+  58, 61, 63, 65, 68, 70, 73, 76,
+  79, 81, 84, 87, 90, 93, 96, 98,
+  101, 104, 106, 109, 111, 114, 116, 118,
+  120, 121, 123, 124, 125, 126, 126, 127,
+  127, 127, 126, 126, 125, 124, 122, 120,
+  118, 116, 113, 110, 107, 104, 100, 96,
+  92, 87, 83, 78, 72, 67, 62, 56,
+  50, 44, 38, 32, 25, 19, 12, 6,
+  0, -7, -13, -20, -26, -33, -39, -45,
+  -51, -57, -63, -68, -73, -79, -84, -88,
+  -93, -97, -101, -105, -108, -111, -114, -117,
+  -119, -121, -123, -125, -126, -127, -127, -128,
+  -128, -128, -127, -127, -126, -125, -124, -122,
+  -121, -119, -117, -115, -112, -110, -107, -105,
+  -102, -99, -97, -94, -91, -88, -85, -82,
+  -80, -77, -74, -71, -69, -66, -64, -62,
+  -59, -57, -55, -53, -52, -50, -48, -47,
+  -46, -45, -44, -43, -42, -41, -41, -40,
+  -40, -39, -39, -39, -39, -39, -39, -39,
+  -39, -39, -39, -39, -39, -39, -40, -40,
+  -40, -40, -40, -39, -39, -39, -39, -38,
+  -38, -37, -36, -36, -35, -34, -33, -32,
+  -30, -29, -28, -26, -24, -23, -21, -19,
+  -17, -15, -13, -11, -9, -7, -5, -3
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fullSaw7.h b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fullSaw7.h
new file mode 100644
index 0000000..ef38b9e
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/fullSaw7.h	
@@ -0,0 +1,34 @@
+int8_t fullSaw7[256] = {
+  0, 1, 3, 5, 7, 8, 10, 11,
+  12, 13, 14, 15, 15, 15, 15, 16,
+  16, 16, 16, 16, 16, 16, 16, 17,
+  17, 18, 19, 20, 21, 23, 24, 26,
+  28, 30, 32, 34, 36, 38, 39, 41,
+  43, 44, 45, 46, 47, 47, 48, 48,
+  48, 48, 48, 48, 48, 47, 47, 47,
+  47, 47, 48, 49, 50, 51, 52, 54,
+  55, 57, 60, 62, 64, 66, 69, 71,
+  73, 75, 77, 79, 80, 81, 82, 82,
+  82, 82, 82, 81, 80, 80, 79, 78,
+  77, 76, 75, 75, 75, 76, 76, 78,
+  79, 81, 84, 87, 90, 94, 98, 102,
+  106, 110, 114, 117, 121, 123, 125, 127,
+  127, 127, 125, 122, 119, 114, 108, 101,
+  93, 84, 74, 63, 51, 39, 26, 13,
+  0, -14, -27, -40, -52, -64, -75, -85,
+  -94, -102, -109, -115, -120, -123, -126, -128,
+  -128, -128, -126, -124, -122, -118, -115, -111,
+  -107, -103, -99, -95, -91, -88, -85, -82,
+  -80, -79, -77, -77, -76, -76, -76, -77,
+  -78, -79, -80, -81, -81, -82, -83, -83,
+  -83, -83, -83, -82, -81, -80, -78, -76,
+  -74, -72, -70, -67, -65, -63, -61, -58,
+  -56, -55, -53, -52, -51, -50, -49, -48,
+  -48, -48, -48, -48, -49, -49, -49, -49,
+  -49, -49, -49, -48, -48, -47, -46, -45,
+  -44, -42, -40, -39, -37, -35, -33, -31,
+  -29, -27, -25, -24, -22, -21, -20, -19,
+  -18, -18, -17, -17, -17, -17, -17, -17,
+  -17, -17, -16, -16, -16, -16, -15, -14,
+  -13, -12, -11, -9, -8, -6, -4, -2
+};
diff --git a/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/generateWavetables.py b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/generateWavetables.py
new file mode 100644
index 0000000..905593f
--- /dev/null
+++ b/Make AVR Examples/Chapter13_Advanced-PWM-Tricks/fatSaw/generateWavetables.py	
@@ -0,0 +1,101 @@
+## This file generates headers with lookup tables for various waveforms
+## Add your own.
+
+import math
+
+def phaseSteps(maxPhase, length=256):
+    steps = range(0, length) 
+    steps = [1.0*x/length * 2.0*math.pi * (maxPhase/360.0) for x in steps]
+    return(steps)
+
+def scaleAndRound(data, scale=255, signedInt=True):
+    data = [0.0+x-min(data) for x in data]
+    data = [1.0*x/max(data)*scale for x in data]
+    data = [int(round(x)) for x in data]
+    if signedInt:
+        data = [x-(scale+1)/2 for x in data]
+    return(data)
+
+def makeSin(maxPhase, length=256):
+    sinus = [math.sin(x) for x in phaseSteps(maxPhase, length)]
+    return(sinus)
+
+def prettyPrint(data, perLine = 8):
+    outString = ""
+    for i in range(len(data) / perLine):
+        strings = [str(x) for x in data[perLine*i:(perLine*i+perLine)]]
+        outString += "\t" + ", ".join(strings) + ",\n"
+    outString = outString[:-2] + "\n" # drop the final comma
+    return(outString)
+
+def writeHeader(fileName, dataName, data, signedInt=True):
+    outfile = open(fileName, "w")
+    if signedInt:
+        outfile.write("int8_t {}[{:d}] = {{ \n".format(dataName, len(data)))
+    else:
+        outfile.write("uint8_t {}[{:d}] = {{ \n".format(dataName, len(data)))
+    outfile.write(prettyPrint(data))
+    outfile.write("};\n")
+    outfile.close()
+
+def bandlimitedSawtooth(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    sign = 1.0
+    for k in range(1, numberPartials+1):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] += sign * math.sin(phases[i]) / k
+        sign = sign * -1
+    return(wave)
+
+def bandlimitedSquare(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    for k in range(1, numberPartials*2, 2):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] +=  math.sin(phases[i]) / k
+    return(wave)
+
+def bandlimitedTriangle(maxPhase, numberPartials, length=256):
+    wave = [0]*length
+    sign = 1.0
+    for k in range(1, numberPartials*2, 2):
+        phases = phaseSteps(maxPhase*k, length)
+        for i in range(length):
+            wave[i] += sign * math.sin(phases[i]) / k**2
+        sign = sign * -1
+    return(wave)
+
+
+
+if __name__ == "__main__":
+    
+    ## Full-waves, full 256 bytes, 0-255 range
+    writeHeader("fullSine.h", 'fullSine', scaleAndRound(makeSin(360)))
+
+    triangleWave = range(0,64)
+    triangleWave.extend(range(64, -64, -1))
+    triangleWave.extend(range(-64, 0, 1))
+    triangleWave = scaleAndRound(triangleWave)
+    writeHeader("fullTriangle.h", 'fullTriangle', triangleWave)
+
+    for numberFrequencies in [3,7,15]:
+        saw = scaleAndRound(bandlimitedSawtooth(360, numberFrequencies))
+        writeHeader("fullSaw{}.h".format(numberFrequencies), 
+                    'fullSaw{}'.format(numberFrequencies), saw)
+        tri = scaleAndRound(bandlimitedTriangle(360, numberFrequencies))
+        writeHeader("fullTri{}.h".format(numberFrequencies), 
+                    'fullTri{}'.format(numberFrequencies), tri)
+        square = scaleAndRound(bandlimitedSquare(360, numberFrequencies))
+        writeHeader("fullSquare{}.h".format(numberFrequencies), 
+                    'fullSquare{}'.format(numberFrequencies), square)
+
+    ## Note that if you define / use too many different waveforms, 
+    ## and you don't store them in PROGMEM in your AVR C routines,
+    ## you might run the chip out of RAM, which causes strange and
+    ## nearly impossible-to-diagnose glitches.
+    
+    ## So here we're breaking each waveform up into its own include file.
+    ## There are ways of storing them all in program memory, and we'll
+    ##  see examples of that in later chapters.
+    
diff --git a/Make AVR Examples/Chapter14_Switches/dcMotorWorkout/Makefile b/Make AVR Examples/Chapter14_Switches/dcMotorWorkout/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter14_Switches/dcMotorWorkout/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter14_Switches/dcMotorWorkout/dcMotorWorkout.c b/Make AVR Examples/Chapter14_Switches/dcMotorWorkout/dcMotorWorkout.c
new file mode 100644
index 0000000..934040e
--- /dev/null
+++ b/Make AVR Examples/Chapter14_Switches/dcMotorWorkout/dcMotorWorkout.c	
@@ -0,0 +1,61 @@
+                                    /* Demos PWM control of a DC motor */
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+#include "pinDefines.h"
+#include "USART.h"
+
+#define SPEED_STEP_DELAY 2                             /* milliseconds */
+
+// -------- Functions --------- //
+static inline void initTimer0(void) {
+  TCCR0A |= (1 << WGM00);                             /* Fast PWM mode */
+  TCCR0A |= (1 << WGM01);                       /* Fast PWM mode, pt.2 */
+  TCCR0A |= (1 << COM0B1);                        /* output PWM to pin */
+  TCCR0B |= (1 << CS02);                 /* Clock with /1024 prescaler */
+  //TCCR0B |= (1 << CS00);         /* Clock with /1024 prescaler, pt.2 */
+}
+
+
+int main(void) {
+
+  uint8_t updateSpeed;
+
+  // -------- Inits --------- //
+  initTimer0();
+  OCR0B = 0;
+
+  ANTENNA_DDR |= (1 << ANTENNA);    /* now hooked up to MOSFET, output */
+  LED_DDR |= (1 << LED0);
+  LED_DDR |= (1 << LED1);
+
+  initUSART();
+	printString("DC Motor Workout\r\n");
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    updateSpeed = getNumber();
+
+                                      /* Ramp up/down to desired speed */
+    if (OCR0B < updateSpeed) {
+      LED_PORT |= (1 << LED0);
+      while (OCR0B < updateSpeed) {
+        OCR0B++;
+        _delay_ms(SPEED_STEP_DELAY);
+      }
+    }
+    else {
+      LED_PORT |= (1 << LED1);
+      while (OCR0B > updateSpeed) {
+        OCR0B--;
+        _delay_ms(SPEED_STEP_DELAY);
+      }
+    }
+    LED_PORT = 0;                                           /* all off */
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter15_Advanced-Motors/hBridgeWorkout/Makefile b/Make AVR Examples/Chapter15_Advanced-Motors/hBridgeWorkout/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter15_Advanced-Motors/hBridgeWorkout/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter15_Advanced-Motors/hBridgeWorkout/hBridgeWorkout.c b/Make AVR Examples/Chapter15_Advanced-Motors/hBridgeWorkout/hBridgeWorkout.c
new file mode 100644
index 0000000..a1178d9
--- /dev/null
+++ b/Make AVR Examples/Chapter15_Advanced-Motors/hBridgeWorkout/hBridgeWorkout.c	
@@ -0,0 +1,63 @@
+// Simple demo of an h-bridge
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+#include "pinDefines.h"
+
+static inline void setBridgeState(uint8_t bridgeA, uint8_t bridgeB) {
+  /* Utility function that lights LEDs when it energizes a bridge side */
+  if (bridgeA) {
+    PORTD |= (1 << PD6);
+    LED_PORT |= (1 << LED0);
+  }
+  else {
+    PORTD &= ~(1 << PD6);
+    LED_PORT &= ~(1 << LED0);
+  }
+  if (bridgeB) {
+    PORTD |= (1 << PD5);
+    LED_PORT |= (1 << LED1);
+  }
+  else {
+    PORTD &= ~(1 << PD5);
+    LED_PORT &= ~(1 << LED1);
+  }
+}
+
+
+int main(void) {
+  // -------- Inits --------- //
+
+  DDRD |= (1 << PD6);               /* now hooked up to bridge, input1 */
+  DDRD |= (1 << PD5);               /* now hooked up to bridge, input2 */
+  LED_DDR |= (1 << LED0);
+  LED_DDR |= (1 << LED1);
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    setBridgeState(1, 0);                                 /* "forward" */
+    _delay_ms(2000);
+
+    setBridgeState(0, 0);                      /* both low stops motor */
+    _delay_ms(2000);
+
+    setBridgeState(0, 1);                                 /* "reverse" */
+    _delay_ms(2000);
+
+    setBridgeState(1, 1);                /* both high also stops motor */
+    _delay_ms(2000);
+
+    // For extra-quick braking, energize the motor backwards
+    setBridgeState(1, 0);
+    _delay_ms(2000);
+    setBridgeState(0, 1);
+    _delay_ms(75);              /* tune this time to match your system */
+    setBridgeState(0, 0);
+    _delay_ms(2000);
+
+  }                                                  /* End event loop */
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter15_Advanced-Motors/stepperWorkout/Makefile b/Make AVR Examples/Chapter15_Advanced-Motors/stepperWorkout/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/Chapter15_Advanced-Motors/stepperWorkout/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter15_Advanced-Motors/stepperWorkout/half_stepping.h b/Make AVR Examples/Chapter15_Advanced-Motors/stepperWorkout/half_stepping.h
new file mode 100644
index 0000000..a030b16
--- /dev/null
+++ b/Make AVR Examples/Chapter15_Advanced-Motors/stepperWorkout/half_stepping.h	
@@ -0,0 +1,17 @@
+
+// Include file for half-stepping order
+// You may need to change the software pinouts around to match your motor
+//   or change your motor connections around to match the software.
+
+const uint8_t stepOrder[] = {
+  (1 << PB0) | (1 << PB2),
+  (1 << PB0),
+  (1 << PB0) | (1 << PB3),
+  (1 << PB3),
+  (1 << PB1) | (1 << PB3),
+  (1 << PB1),
+  (1 << PB1) | (1 << PB2),
+  (1 << PB2)
+};
+
+#define LAST_PHASE_IN_CYCLE  7
diff --git a/Make AVR Examples/Chapter15_Advanced-Motors/stepperWorkout/stepperWorkout.c b/Make AVR Examples/Chapter15_Advanced-Motors/stepperWorkout/stepperWorkout.c
new file mode 100644
index 0000000..c79d057
--- /dev/null
+++ b/Make AVR Examples/Chapter15_Advanced-Motors/stepperWorkout/stepperWorkout.c	
@@ -0,0 +1,137 @@
+                          /* Stepper Motor Demo with Accelerated Moves */
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+#include <avr/power.h>
+#include "USART.h"
+
+      /* Set these to +/- 1 for half-stepping, +/- 2 for full-stepping */
+#define FORWARD    1
+#define BACKWARD  -1
+#define TURN       400          /* steps per rotation,
+                                   depends on stepping & motor */
+
+      /* These parameters will depend on your motor, what it's driving */
+#define MAX_DELAY    255               /* determines min startup speed */
+#define MIN_DELAY     10                /* determines max cruise speed */
+#define ACCELERATION  16          /* lower = smoother but slower accel */
+
+#define RAMP_STEPS    (MAX_DELAY - MIN_DELAY) / ACCELERATION
+
+// -------- Global Variables --------- //
+const uint8_t motorPhases[] = {
+  (1 << PB0) | (1 << PB2),                                     /* full */
+  (1 << PB0),                                                  /* half */
+  (1 << PB0) | (1 << PB3),                                     /* full */
+  (1 << PB3),                                                  /* half */
+  (1 << PB1) | (1 << PB3),                                     /* etc. */
+  (1 << PB1),
+  (1 << PB1) | (1 << PB2),
+  (1 << PB2)
+};
+
+volatile uint8_t stepPhase = 0;
+volatile int8_t direction = FORWARD;
+volatile uint16_t stepCounter = 0;
+
+// -------- Functions --------- //
+void initTimer(void) {
+  TCCR0A |= (1 << WGM01);                                  /* CTC mode */
+  TCCR0B |= (1 << CS00) | (1 << CS02);
+  OCR0A = MAX_DELAY;                   /* set default speed as slowest */
+  sei();                                   /* enable global interrupts */
+               /* Notice we haven't set the timer0 interrupt flag yet. */
+}
+
+ISR(TIMER0_COMPA_vect) {
+  stepPhase += direction;              /* take step in right direction */
+  stepPhase &= 0b00000111;                  /* keep phase in range 0-7 */
+  PORTB = motorPhases[stepPhase];          /* write phase out to motor */
+  stepCounter++;                                   /* count step taken */
+}
+
+void takeSteps(uint16_t howManySteps, uint8_t delay) {
+  UDR0 = delay;          /* send speed/delay over serial, non-blocking */
+  OCR0A = delay;                  /* delay in counter compare register */
+  stepCounter = 0;            /* initialize to zero steps taken so far */
+  TIMSK0 |= (1 << OCIE0A);             /* turn on interrupts, stepping */
+  while (!(stepCounter == howManySteps)) {;
+  }                                                            /* wait */
+  TIMSK0 &= ~(1 << OCIE0A);                           /* turn back off */
+}
+
+void trapezoidMove(int16_t howManySteps) {
+  uint8_t delay = MAX_DELAY;
+  uint16_t stepsTaken = 0;
+
+                               /* set direction, make howManySteps > 0 */
+  if (howManySteps > 0) {
+    direction = FORWARD;
+  }
+  else {
+    direction = BACKWARD;
+    howManySteps = -howManySteps;
+  }
+
+  if (howManySteps > (RAMP_STEPS * 2)) {
+                             /* Have enough steps for a full trapezoid */
+                                                         /* Accelerate */
+    while (stepsTaken < RAMP_STEPS) {
+      takeSteps(1, delay);
+      delay -= ACCELERATION;
+      stepsTaken++;
+    }
+                                                             /* Cruise */
+    delay = MIN_DELAY;
+    takeSteps((howManySteps - 2 * RAMP_STEPS), delay);
+    stepsTaken += (howManySteps - 2 * RAMP_STEPS);
+                                                         /* Decelerate */
+    while (stepsTaken < howManySteps) {
+      takeSteps(1, delay);
+      delay += ACCELERATION;
+      stepsTaken++;
+    }
+  }
+  else {
+                                               /* Partial ramp up/down */
+    while (stepsTaken <= howManySteps / 2) {
+      takeSteps(1, delay);
+      delay -= ACCELERATION;
+      stepsTaken++;
+    }
+    delay += ACCELERATION;
+    while (stepsTaken < howManySteps) {
+      takeSteps(1, delay);
+      delay += ACCELERATION;
+      stepsTaken++;
+    }
+  }
+}
+
+int main(void) {
+  // -------- Inits --------- //
+  clock_prescale_set(clock_div_1);                  /* CPU clock 8 MHz */
+  initUSART();
+  _delay_ms(1000);
+  initTimer();
+  DDRB = (1 << PB0) | (1 << PB1) | (1 << PB2) | (1 << PB3);
+
+  // ------ Event loop ------ //
+  while (1) {
+
+                         /* Smooth movements, trapezoidal acceleration */
+    trapezoidMove(2 * TURN);                         /* two full turns */
+    trapezoidMove(-TURN / 2);                             /* half turn */
+    trapezoidMove(TURN / 4);                           /* quarter turn */
+    trapezoidMove(-TURN / 8);                                /* eighth */
+    _delay_ms(TURN);
+    trapezoidMove(-TURN / 4);                         /* the other way */
+    trapezoidMove(TURN / 8);
+    trapezoidMove(TURN / 2);                /* half turn back to start */
+    _delay_ms(1000);
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter16_SPI/spiEEPROMDemo/25LC256.c b/Make AVR Examples/Chapter16_SPI/spiEEPROMDemo/25LC256.c
new file mode 100644
index 0000000..f08ee38
--- /dev/null
+++ b/Make AVR Examples/Chapter16_SPI/spiEEPROMDemo/25LC256.c	
@@ -0,0 +1,105 @@
+#include "25LC256.h"
+
+void initSPI(void) {
+  SPI_SS_DDR |= (1 << SPI_SS);                        /* set SS output */
+  SPI_SS_PORT |= (1 << SPI_SS);       /* start off not selected (high) */
+
+  SPI_MOSI_DDR |= (1 << SPI_MOSI);                   /* output on MOSI */
+  SPI_MISO_PORT |= (1 << SPI_MISO);                  /* pullup on MISO */
+  SPI_SCK_DDR |= (1 << SPI_SCK);                      /* output on SCK */
+
+  /* Don't have to set phase, polarity b/c
+   * default works with 25LCxxx chips */
+  SPCR |= (1 << SPR1);                /* div 16, safer for breadboards */
+  SPCR |= (1 << MSTR);                                  /* clockmaster */
+  SPCR |= (1 << SPE);                                        /* enable */
+}
+
+void SPI_tradeByte(uint8_t byte) {
+  SPDR = byte;                       /* SPI starts sending immediately */
+  loop_until_bit_is_set(SPSR, SPIF);                /* wait until done */
+                                /* SPDR now contains the received byte */
+}
+
+void EEPROM_send16BitAddress(uint16_t address) {
+  SPI_tradeByte((uint8_t) (address >> 8));    /* most significant byte */
+  SPI_tradeByte((uint8_t) address);          /* least significant byte */
+}
+
+uint8_t EEPROM_readStatus(void) {
+  SLAVE_SELECT;
+  SPI_tradeByte(EEPROM_RDSR);
+  SPI_tradeByte(0);                            /* clock out eight bits */
+  SLAVE_DESELECT;
+  return (SPDR);                                  /* return the result */
+}
+
+void EEPROM_writeEnable(void) {
+  SLAVE_SELECT;
+  SPI_tradeByte(EEPROM_WREN);
+  SLAVE_DESELECT;
+}
+
+uint8_t EEPROM_readByte(uint16_t address) {
+  SLAVE_SELECT;
+  SPI_tradeByte(EEPROM_READ);
+  EEPROM_send16BitAddress(address);
+  SPI_tradeByte(0);
+  SLAVE_DESELECT;
+  return (SPDR);
+}
+
+uint16_t EEPROM_readWord(uint16_t address) {
+  uint16_t eepromWord;
+  SLAVE_SELECT;
+  SPI_tradeByte(EEPROM_READ);
+  EEPROM_send16BitAddress(address);
+  SPI_tradeByte(0);
+  eepromWord = SPDR;
+  eepromWord = (eepromWord << 8);                      /* most-sig bit */
+  SPI_tradeByte(0);
+  eepromWord += SPDR;                                 /* least-sig bit */
+  SLAVE_DESELECT;
+  return (eepromWord);
+}
+
+void EEPROM_writeByte(uint16_t address, uint8_t byte) {
+  EEPROM_writeEnable();
+  SLAVE_SELECT;
+  SPI_tradeByte(EEPROM_WRITE);
+  EEPROM_send16BitAddress(address);
+  SPI_tradeByte(byte);
+  SLAVE_DESELECT;
+  while (EEPROM_readStatus() & _BV(EEPROM_WRITE_IN_PROGRESS)) {;
+  }
+}
+
+void EEPROM_writeWord(uint16_t address, uint16_t word) {
+  EEPROM_writeEnable();
+  SLAVE_SELECT;
+  SPI_tradeByte(EEPROM_WRITE);
+  EEPROM_send16BitAddress(address);
+  SPI_tradeByte((uint8_t) (word >> 8));
+  SPI_tradeByte((uint8_t) word);
+  SLAVE_DESELECT;
+  while (EEPROM_readStatus() & _BV(EEPROM_WRITE_IN_PROGRESS)) {;
+  }
+}
+
+void EEPROM_clearAll(void) {
+  uint8_t i;
+  uint16_t pageAddress = 0;
+  while (pageAddress < EEPROM_BYTES_MAX) {
+    EEPROM_writeEnable();
+    SLAVE_SELECT;
+    SPI_tradeByte(EEPROM_WRITE);
+    EEPROM_send16BitAddress(pageAddress);
+    for (i = 0; i < EEPROM_BYTES_PER_PAGE; i++) {
+      SPI_tradeByte(0);
+    }
+    SLAVE_DESELECT;
+    pageAddress += EEPROM_BYTES_PER_PAGE;
+    while (EEPROM_readStatus() & _BV(EEPROM_WRITE_IN_PROGRESS)) {;
+    }
+  }
+}
diff --git a/Make AVR Examples/Chapter16_SPI/spiEEPROMDemo/25LC256.h b/Make AVR Examples/Chapter16_SPI/spiEEPROMDemo/25LC256.h
new file mode 100644
index 0000000..01b793e
--- /dev/null
+++ b/Make AVR Examples/Chapter16_SPI/spiEEPROMDemo/25LC256.h	
@@ -0,0 +1,60 @@
+                                         /* SPI EEPROM 25LC256 Library */
+#include <avr/io.h>
+#include "pinDefines.h"
+
+
+                                 /* Which pin selects EEPROM as slave? */
+#define SLAVE_SELECT    SPI_SS_PORT &= ~(1 << SPI_SS)
+#define SLAVE_DESELECT  SPI_SS_PORT |= (1 << SPI_SS)
+
+// Instruction Set -- from data sheet
+#define EEPROM_READ      0b00000011                     /* read memory */
+#define EEPROM_WRITE     0b00000010                 /* write to memory */
+
+#define EEPROM_WRDI      0b00000100                   /* write disable */
+#define EEPROM_WREN      0b00000110                    /* write enable */
+
+#define EEPROM_RDSR      0b00000101            /* read status register */
+#define EEPROM_WRSR      0b00000001           /* write status register */
+
+// EEPROM Status Register Bits -- from data sheet
+// Use these to parse status register
+#define EEPROM_WRITE_IN_PROGRESS    0
+#define EEPROM_WRITE_ENABLE_LATCH   1
+#define EEPROM_BLOCK_PROTECT_0      2
+#define EEPROM_BLOCK_PROTECT_1      3
+
+#define EEPROM_BYTES_PER_PAGE       64
+#define EEPROM_BYTES_MAX            0x7FFF
+
+// Functions
+
+                  /* Init SPI to run EEPROM with phase, polarity = 0,0 */
+void initSPI(void);
+
+                  /* Generic.  Just loads up HW SPI register and waits */
+void SPI_tradeByte(uint8_t byte);
+
+                     /* splits 16-bit address into 2 bytes, sends both */
+void EEPROM_send16BitAddress(uint16_t address);
+
+                                   /* reads the EEPROM status register */
+uint8_t EEPROM_readStatus(void);
+
+                                   /* helper: sets EEPROM write enable */
+void EEPROM_writeEnable(void);
+
+                           /* gets a byte from a given memory location */
+uint8_t EEPROM_readByte(uint16_t address);
+
+                        /* gets two bytes from a given memory location */
+uint16_t EEPROM_readWord(uint16_t address);
+
+                           /* writes a byte to a given memory location */
+void EEPROM_writeByte(uint16_t address, uint8_t byte);
+
+                          /* gets two bytes to a given memory location */
+void EEPROM_writeWord(uint16_t address, uint16_t word);
+
+                                  /* sets every byte in memory to zero */
+void EEPROM_clearAll(void);
diff --git a/Make AVR Examples/Chapter16_SPI/spiEEPROMDemo/Makefile b/Make AVR Examples/Chapter16_SPI/spiEEPROMDemo/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter16_SPI/spiEEPROMDemo/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter16_SPI/spiEEPROMDemo/spiEEPROMDemo.c b/Make AVR Examples/Chapter16_SPI/spiEEPROMDemo/spiEEPROMDemo.c
new file mode 100644
index 0000000..ba56d63
--- /dev/null
+++ b/Make AVR Examples/Chapter16_SPI/spiEEPROMDemo/spiEEPROMDemo.c	
@@ -0,0 +1,55 @@
+                                            /* SPI EEPROM 25LC256 Demo */
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+
+#include "pinDefines.h"
+
+#include "USART.h"
+#include "25LC256.h"
+
+int main(void) {
+  uint8_t i;
+  uint8_t address;
+
+  // -------- Inits --------- //
+  initSPI();
+  initUSART();
+
+  // ------ Event loop ------ //
+  while (1) {
+    printString("\r\n====  EEPROM Memory Playground ====\r\n");
+    printString("Address  Value\r\n");
+
+    for (i = 0; i < 10; i++) {  /* print out first ten bytes of memory */
+      printString("  ");
+      printByte(i);
+      printString("     ");
+      printByte(EEPROM_readByte(i));
+      printString("\r\n");
+    }
+    printString(" [e] to erase all memory\r\n");
+    printString(" [w] to write byte to memory\r\n\r\n");
+
+    switch (receiveByte()) {                             /* take input */
+    case 'e':
+      printString("Clearing EEPROM, this could take a few seconds.\r\n");
+      EEPROM_clearAll();
+      break;
+    case 'w':
+      printString("Which memory slot would you like to write to?\r\n");
+      address = getNumber();
+      printString("\r\nWhat number would you like to store there?\r\n");
+      i = getNumber();
+      EEPROM_writeByte(address, i);
+      printString("\r\n");
+      break;
+    default:
+      printString("What??\r\n");
+    }
+
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter17_I2C/i2cThermometer/Makefile b/Make AVR Examples/Chapter17_I2C/i2cThermometer/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/Chapter17_I2C/i2cThermometer/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter17_I2C/i2cThermometer/i2c.c b/Make AVR Examples/Chapter17_I2C/i2cThermometer/i2c.c
new file mode 100644
index 0000000..17fa934
--- /dev/null
+++ b/Make AVR Examples/Chapter17_I2C/i2cThermometer/i2c.c	
@@ -0,0 +1,38 @@
+#include "i2c.h"
+
+void initI2C(void) {
+  TWBR = 32;                               /* set bit rate, see p. 242 */
+                                     /* 8MHz / (16+2*TWBR*1) ~= 100kHz */
+  TWCR |= (1 << TWEN);                                       /* enable */
+}
+
+void i2cWaitForComplete(void) {
+  loop_until_bit_is_set(TWCR, TWINT);
+}
+
+void i2cStart(void) {
+  TWCR = (_BV(TWINT) | _BV(TWEN) | _BV(TWSTA));
+  i2cWaitForComplete();
+}
+
+void i2cStop(void) {
+  TWCR = (_BV(TWINT) | _BV(TWEN) | _BV(TWSTO));
+}
+
+uint8_t i2cReadAck(void) {
+  TWCR = (_BV(TWINT) | _BV(TWEN) | _BV(TWEA));
+  i2cWaitForComplete();
+  return (TWDR);
+}
+
+uint8_t i2cReadNoAck(void) {
+  TWCR = (_BV(TWINT) | _BV(TWEN));
+  i2cWaitForComplete();
+  return (TWDR);
+}
+
+void i2cSend(uint8_t data) {
+  TWDR = data;
+  TWCR = (_BV(TWINT) | _BV(TWEN));                  /* init and enable */
+  i2cWaitForComplete();
+}
diff --git a/Make AVR Examples/Chapter17_I2C/i2cThermometer/i2c.h b/Make AVR Examples/Chapter17_I2C/i2cThermometer/i2c.h
new file mode 100644
index 0000000..21b4c4c
--- /dev/null
+++ b/Make AVR Examples/Chapter17_I2C/i2cThermometer/i2c.h	
@@ -0,0 +1,22 @@
+// Functions for i2c communication
+#include <avr/io.h>
+#include "pinDefines.h"
+
+void initI2C(void);
+    /* Sets pullups and initializes bus speed to 100kHz (at FCPU=8MHz) */
+
+void i2cWaitForComplete(void);
+                       /* Waits until the hardware sets the TWINT flag */
+
+void i2cStart(void);
+                               /* Sends a start condition (sets TWSTA) */
+void i2cStop(void);
+                                /* Sends a stop condition (sets TWSTO) */
+
+void i2cSend(uint8_t data);
+                   /* Loads data, sends it out, waiting for completion */
+
+uint8_t i2cReadAck(void);
+              /* Read in from slave, sending ACK when done (sets TWEA) */
+uint8_t i2cReadNoAck(void);
+              /* Read in from slave, sending NOACK when done (no TWEA) */
diff --git a/Make AVR Examples/Chapter17_I2C/i2cThermometer/i2cThermometer.c b/Make AVR Examples/Chapter17_I2C/i2cThermometer/i2cThermometer.c
new file mode 100644
index 0000000..c02a514
--- /dev/null
+++ b/Make AVR Examples/Chapter17_I2C/i2cThermometer/i2cThermometer.c	
@@ -0,0 +1,60 @@
+                /* Reads LM75 Thermometer and Prints Value over Serial */
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/power.h>
+
+#include "pinDefines.h"
+#include "USART.h"
+#include "i2c.h"
+
+// -------- Defines -------- //
+
+#define LM75_ADDRESS_W               0b10010000
+#define LM75_ADDRESS_R               0b10010001
+#define LM75_TEMP_REGISTER           0b00000000
+#define LM75_CONFIG_REGISTER         0b00000001
+#define LM75_THYST_REGISTER          0b00000010
+#define LM75_TOS_REGISTER            0b00000011
+// -------- Functions --------- //
+
+int main(void) {
+
+  uint8_t tempHighByte, tempLowByte;
+
+  // -------- Inits --------- //
+  clock_prescale_set(clock_div_1);                             /* 8MHz */
+  initUSART();
+  printString("\r\n====  i2c Thermometer  ====\r\n");
+  initI2C();
+
+  // ------ Event loop ------ //
+  while (1) {
+                        /* To set register, address LM75 in write mode */
+    i2cStart();
+    i2cSend(LM75_ADDRESS_W);
+    i2cSend(LM75_TEMP_REGISTER);
+    i2cStart();                      /* restart, just send start again */
+                              /* Setup and send address, with read bit */
+    i2cSend(LM75_ADDRESS_R);
+                               /* Now receive two bytes of temperature */
+    tempHighByte = i2cReadAck();
+    tempLowByte = i2cReadNoAck();
+    i2cStop();
+
+    // Print it out nicely over serial for now...
+    printByte(tempHighByte);
+    if (tempLowByte & _BV(7)) {
+      printString(".5\r\n");
+    }
+    else {
+      printString(".0\r\n");
+    }
+
+                                                    /* Once per second */
+    _delay_ms(1000);
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter17_I2C/loggingThermometer/25LC256.c b/Make AVR Examples/Chapter17_I2C/loggingThermometer/25LC256.c
new file mode 100644
index 0000000..ade4746
--- /dev/null
+++ b/Make AVR Examples/Chapter17_I2C/loggingThermometer/25LC256.c	
@@ -0,0 +1,105 @@
+#include "25LC256.h"
+
+void initSPI(void) {
+  SPI_SS_DDR |= (1 << SPI_SS);                        /* set SS output */
+  SPI_SS_PORT |= (1 << SPI_SS);       /* start off not selected (high) */
+
+  SPI_MOSI_DDR |= (1 << SPI_MOSI);                   /* output on MOSI */
+  SPI_MISO_PORT |= (1 << SPI_MISO);                  /* pullup on MISO */
+  SPI_SCK_DDR |= (1 << SPI_SCK);                      /* output on SCK */
+
+  /* Don't have to set phase, polarity b/c
+     default works with 25LCxxx chips */
+  SPCR |= (1 << SPR1);                /* div 16, safer for breadboards */
+  SPCR |= (1 << MSTR);                                  /* clockmaster */
+  SPCR |= (1 << SPE);                                        /* enable */
+}
+
+void SPI_tradeByte(uint8_t byte) {
+  SPDR = byte;                       /* SPI starts sending immediately */
+  loop_until_bit_is_set(SPSR, SPIF);                /* wait until done */
+                                /* SPDR now contains the received byte */
+}
+
+void EEPROM_send16BitAddress(uint16_t address) {
+  SPI_tradeByte((uint8_t) (address >> 8));    /* most significant byte */
+  SPI_tradeByte((uint8_t) address);          /* least significant byte */
+}
+
+uint8_t EEPROM_readStatus(void) {
+  SLAVE_SELECT;
+  SPI_tradeByte(EEPROM_RDSR);
+  SPI_tradeByte(0);                            /* clock out eight bits */
+  SLAVE_DESELECT;
+  return (SPDR);                                  /* return the result */
+}
+
+void EEPROM_writeEnable(void) {
+  SLAVE_SELECT;
+  SPI_tradeByte(EEPROM_WREN);
+  SLAVE_DESELECT;
+}
+
+uint8_t EEPROM_readByte(uint16_t address) {
+  SLAVE_SELECT;
+  SPI_tradeByte(EEPROM_READ);
+  EEPROM_send16BitAddress(address);
+  SPI_tradeByte(0);
+  SLAVE_DESELECT;
+  return (SPDR);
+}
+
+uint16_t EEPROM_readWord(uint16_t address) {
+  uint16_t eepromWord;
+  SLAVE_SELECT;
+  SPI_tradeByte(EEPROM_READ);
+  EEPROM_send16BitAddress(address);
+  SPI_tradeByte(0);
+  eepromWord = SPDR;
+  eepromWord = (eepromWord << 8);                      /* most-sig bit */
+  SPI_tradeByte(0);
+  eepromWord += SPDR;                                 /* least-sig bit */
+  SLAVE_DESELECT;
+  return (eepromWord);
+}
+
+void EEPROM_writeByte(uint16_t address, uint8_t byte) {
+  EEPROM_writeEnable();
+  SLAVE_SELECT;
+  SPI_tradeByte(EEPROM_WRITE);
+  EEPROM_send16BitAddress(address);
+  SPI_tradeByte(byte);
+  SLAVE_DESELECT;
+  while (EEPROM_readStatus() & _BV(EEPROM_WRITE_IN_PROGRESS)) {;
+  }
+}
+
+void EEPROM_writeWord(uint16_t address, uint16_t word) {
+  EEPROM_writeEnable();
+  SLAVE_SELECT;
+  SPI_tradeByte(EEPROM_WRITE);
+  EEPROM_send16BitAddress(address);
+  SPI_tradeByte((uint8_t) (word >> 8));
+  SPI_tradeByte((uint8_t) word);
+  SLAVE_DESELECT;
+  while (EEPROM_readStatus() & _BV(EEPROM_WRITE_IN_PROGRESS)) {;
+  }
+}
+
+void EEPROM_clearAll(void) {
+  uint8_t i;
+  uint16_t pageAddress = 0;
+  while (pageAddress < EEPROM_BYTES_MAX) {
+    EEPROM_writeEnable();
+    SLAVE_SELECT;
+    SPI_tradeByte(EEPROM_WRITE);
+    EEPROM_send16BitAddress(pageAddress);
+    for (i = 0; i < EEPROM_BYTES_PER_PAGE; i++) {
+      SPI_tradeByte(0);
+    }
+    SLAVE_DESELECT;
+    pageAddress += EEPROM_BYTES_PER_PAGE;
+    while (EEPROM_readStatus() & _BV(EEPROM_WRITE_IN_PROGRESS)) {;
+    }
+  }
+}
diff --git a/Make AVR Examples/Chapter17_I2C/loggingThermometer/25LC256.h b/Make AVR Examples/Chapter17_I2C/loggingThermometer/25LC256.h
new file mode 100644
index 0000000..c8ef4fc
--- /dev/null
+++ b/Make AVR Examples/Chapter17_I2C/loggingThermometer/25LC256.h	
@@ -0,0 +1,60 @@
+                                         /* SPI EEPROM 25LC256 Library */
+#include <avr/io.h>
+#include "pinDefines.h"
+
+
+                                 /* Which pin selects EEPROM as slave? */
+#define SLAVE_SELECT    SPI_SS_PORT &= ~(1 << SPI_SS)
+#define SLAVE_DESELECT  SPI_SS_PORT |= (1 << SPI_SS)
+
+// Instruction Set -- from data sheet
+#define EEPROM_READ      0b00000011                     /* read memory */
+#define EEPROM_WRITE     0b00000010                 /* write to memory */
+
+#define EEPROM_WRDI      0b00000100                   /* write disable */
+#define EEPROM_WREN      0b00000110                    /* write enable */
+
+#define EEPROM_RDSR      0b00000101            /* read status register */
+#define EEPROM_WRSR      0b00000001           /* write status register */
+
+// EEPROM Status Register Bits -- from data sheet
+// Use these to parse status register
+#define EEPROM_WRITE_IN_PROGRESS    0
+#define EEPROM_WRITE_ENABLE_LATCH   1
+#define EEPROM_BLOCK_PROTECT_0      2
+#define EEPROM_BLOCK_PROTECT_1      3
+
+#define EEPROM_BYTES_PER_PAGE       64
+#define EEPROM_BYTES_MAX            0x7FFF
+
+// Functions
+
+void initSPI(void);
+                  /* Init SPI to run EEPROM with phase, polarity = 0,0 */
+
+void SPI_tradeByte(uint8_t byte);
+                  /* Generic.  Just loads up HW SPI register and waits */
+
+void EEPROM_send16BitAddress(uint16_t address);
+                     /* splits 16-bit address into 2 bytes, sends both */
+
+uint8_t EEPROM_readStatus(void);
+                                   /* reads the EEPROM status register */
+
+void EEPROM_writeEnable(void);
+                                   /* helper: sets EEPROM write enable */
+
+uint8_t EEPROM_readByte(uint16_t address);
+                           /* gets a byte from a given memory location */
+
+uint16_t EEPROM_readWord(uint16_t address);
+                        /* gets two bytes from a given memory location */
+
+void EEPROM_writeByte(uint16_t address, uint8_t byte);
+                           /* writes a byte to a given memory location */
+
+void EEPROM_writeWord(uint16_t address, uint16_t word);
+                          /* gets two bytes to a given memory location */
+
+void EEPROM_clearAll(void);
+                                  /* sets every byte in memory to zero */
diff --git a/Make AVR Examples/Chapter17_I2C/loggingThermometer/Makefile b/Make AVR Examples/Chapter17_I2C/loggingThermometer/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/Chapter17_I2C/loggingThermometer/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter17_I2C/loggingThermometer/i2c.c b/Make AVR Examples/Chapter17_I2C/loggingThermometer/i2c.c
new file mode 100644
index 0000000..18d06e5
--- /dev/null
+++ b/Make AVR Examples/Chapter17_I2C/loggingThermometer/i2c.c	
@@ -0,0 +1,39 @@
+#include "i2c.h"
+
+void initI2C(void) {
+                                     /* set pullups for SDA, SCL lines */
+  I2C_SDA_PORT |= ((1 << I2C_SDA) | (1 << I2C_SCL));
+  TWBR = 32;   /* set bit rate (p.242): 8MHz / (16+2*TWBR*1) ~= 100kHz */
+  TWCR |= (1 << TWEN);                                       /* enable */
+}
+
+void i2cWaitForComplete(void) {
+  loop_until_bit_is_set(TWCR, TWINT);
+}
+
+void i2cStart(void) {
+  TWCR = (_BV(TWINT) | _BV(TWEN) | _BV(TWSTA));
+  i2cWaitForComplete();
+}
+
+void i2cStop(void) {
+  TWCR = (_BV(TWINT) | _BV(TWEN) | _BV(TWSTO));
+}
+
+uint8_t i2cReadAck(void) {
+  TWCR = (_BV(TWINT) | _BV(TWEN) | _BV(TWEA));
+  i2cWaitForComplete();
+  return (TWDR);
+}
+
+uint8_t i2cReadNoAck(void) {
+  TWCR = (_BV(TWINT) | _BV(TWEN));
+  i2cWaitForComplete();
+  return (TWDR);
+}
+
+void i2cSend(uint8_t data) {
+  TWDR = data;
+  TWCR = (_BV(TWINT) | _BV(TWEN));                  /* init and enable */
+  i2cWaitForComplete();
+}
diff --git a/Make AVR Examples/Chapter17_I2C/loggingThermometer/i2c.h b/Make AVR Examples/Chapter17_I2C/loggingThermometer/i2c.h
new file mode 100644
index 0000000..21b4c4c
--- /dev/null
+++ b/Make AVR Examples/Chapter17_I2C/loggingThermometer/i2c.h	
@@ -0,0 +1,22 @@
+// Functions for i2c communication
+#include <avr/io.h>
+#include "pinDefines.h"
+
+void initI2C(void);
+    /* Sets pullups and initializes bus speed to 100kHz (at FCPU=8MHz) */
+
+void i2cWaitForComplete(void);
+                       /* Waits until the hardware sets the TWINT flag */
+
+void i2cStart(void);
+                               /* Sends a start condition (sets TWSTA) */
+void i2cStop(void);
+                                /* Sends a stop condition (sets TWSTO) */
+
+void i2cSend(uint8_t data);
+                   /* Loads data, sends it out, waiting for completion */
+
+uint8_t i2cReadAck(void);
+              /* Read in from slave, sending ACK when done (sets TWEA) */
+uint8_t i2cReadNoAck(void);
+              /* Read in from slave, sending NOACK when done (no TWEA) */
diff --git a/Make AVR Examples/Chapter17_I2C/loggingThermometer/loggingThermometer.c b/Make AVR Examples/Chapter17_I2C/loggingThermometer/loggingThermometer.c
new file mode 100644
index 0000000..0efbb35
--- /dev/null
+++ b/Make AVR Examples/Chapter17_I2C/loggingThermometer/loggingThermometer.c	
@@ -0,0 +1,172 @@
+
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+#include <avr/power.h>
+
+#include "pinDefines.h"
+#include "USART.h"
+
+#include "i2c.h"                                  /* for i2c functions */
+#include "25LC256.h"                            /* for EEPROM specific */
+
+// -------- Defines --------- //
+
+#define LM75_ADDRESS_W 0b10010000
+#define LM75_ADDRESS_R 0b10010001
+#define LM75_TEMP_REGISTER           0b00000000
+#define LM75_CONFIG_REGISTER         0b00000001
+#define LM75_THYST_REGISTER          0b00000010
+#define LM75_TOS_REGISTER            0b00000011
+
+#define CURRENT_LOCATION_POINTER  0
+          /* where to store a pointer to the current reading in EEPROM */
+#define SECONDS_POINTER           2
+                                     /* store seconds-delay value here */
+#define MEMORY_START              4
+                          /* where to start logging temperature values */
+#define MENU_DELAY                5
+                         /* seconds to wait before bypassing main menu */
+
+// -------- Functions --------- //
+
+static inline void printTemperature(uint8_t tempReading) {
+                                   /* temperature stored as 2x Celcius */
+  printByte((tempReading >> 1));
+  if (tempReading & 1) {
+    printString(".5\r\n");
+  }
+  else {
+    printString(".0\r\n");
+  }
+}
+
+int main(void) {
+  uint16_t secondsDelay;          /* how long to wait between readings */
+  uint16_t currentMemoryLocation;           /* where are we in EEPROM? */
+  uint16_t i;                        /* used to count memory locations */
+  uint8_t tempHighByte, tempLowByte, temperatureByte;     /* from LM75 */
+  uint8_t enterMenu;                                   /* logical flag */
+
+  // -------- Inits --------- //
+  clock_prescale_set(clock_div_1);                            /* 8 MHz */
+  initSPI();
+  initI2C();
+  initUSART();
+  LED_DDR |= (1 << LED0);
+
+                                    /* Load up last values from EEPROM */
+  secondsDelay = EEPROM_readWord(SECONDS_POINTER);
+
+                            /* Delay to allow input to enter main menu */
+  printString("*** Press [m] within ");
+  printByte(MENU_DELAY);
+  printString(" seconds to enter menu. ***\r\n ");
+
+  for (i = 0; i < MENU_DELAY; i++) {
+    _delay_ms(1000);
+  }
+
+  if (bit_is_set(UCSR0A, RXC0) && (UDR0 == 'm')) {
+    enterMenu = 1;
+  }
+  else {
+    enterMenu = 0;
+  }
+
+  while (enterMenu) {
+    printString("\r\n====[  Logging Thermometer ]====\r\n  ");
+    currentMemoryLocation = EEPROM_readWord(CURRENT_LOCATION_POINTER);
+    printWord(currentMemoryLocation - MEMORY_START);
+    printString(" readings in log.\r\n  ");
+    printWord(secondsDelay);
+    printString(" seconds between readings.\r\n");
+    printString(" [<] to shorten sample delay time\r\n");
+    printString(" [>] to increase sample delay time\r\n");
+    printString(" [?] to reset delay time to 60 sec\r\n");
+    printString(" [d] to print out log over serial\r\n");
+    printString(" [e] to erase memory\r\n");
+    printString(" [s] to start logging\r\n\r\n");
+
+    switch (receiveByte()) {
+    case 'd':
+      SLAVE_SELECT;
+      SPI_tradeByte(EEPROM_READ);
+      EEPROM_send16BitAddress(MEMORY_START);
+      for (i = MEMORY_START; i < currentMemoryLocation; i++) {
+        SPI_tradeByte(0);
+        printTemperature(SPDR);
+      }
+      SLAVE_DESELECT;
+      break;
+    case '<':
+      if (secondsDelay >= 10) {
+        secondsDelay -= 5;
+        EEPROM_writeWord(SECONDS_POINTER, secondsDelay);
+      }
+      break;
+    case '>':
+      if (secondsDelay < 65000) {
+        secondsDelay += 5;
+        EEPROM_writeWord(SECONDS_POINTER, secondsDelay);
+      }
+      break;
+    case '?':
+      secondsDelay = 60;
+      EEPROM_writeWord(SECONDS_POINTER, secondsDelay);
+      break;
+    case 'e':
+      printString("Clearing EEPROM, this could take a few seconds.\r\n");
+      EEPROM_clearAll();
+      EEPROM_writeWord(CURRENT_LOCATION_POINTER, MEMORY_START);
+      EEPROM_writeWord(SECONDS_POINTER, secondsDelay);
+      break;
+    case 's':
+      printString("OK, logging...\r\n");
+      enterMenu = 0;
+      break;
+    default:
+      printString("Sorry, didn't understand that.\r\n");
+    }
+  }
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    currentMemoryLocation = EEPROM_readWord(CURRENT_LOCATION_POINTER);
+
+                                      /* Make sure in temperature mode */
+    i2cStart();
+    i2cSend(LM75_ADDRESS_W);
+    i2cSend(LM75_TEMP_REGISTER);
+                                          /* Get Temp from thermometer */
+    i2cStart();               /* Setup and send address, with read bit */
+    i2cSend(LM75_ADDRESS_R);
+    tempHighByte = i2cReadAck();           /* two bytes of temperature */
+    tempLowByte = i2cReadNoAck();
+    i2cStop();
+    temperatureByte = (tempHighByte << 1) | (tempLowByte >> 7);
+         /* temperatureByte now contains 2x the temperature in Celcius */
+    printTemperature(temperatureByte);                /* serial output */
+
+                                     /* Save the new temperature value */
+    EEPROM_writeByte(currentMemoryLocation, temperatureByte);
+
+    /* move on to next location and record new position
+       if not already at the end of memory */
+    if (currentMemoryLocation < EEPROM_BYTES_MAX) {
+      currentMemoryLocation++;
+      EEPROM_writeWord(CURRENT_LOCATION_POINTER, currentMemoryLocation);
+    }
+
+                                                              /* delay */
+    for (i = 0; i < secondsDelay; i++) {
+      _delay_ms(1000);
+      LED_PORT ^= (1 << LED0);             /* blink to show working */
+    }
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo1/Makefile b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo1/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo1/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo1/progmemDemo1.c b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo1/progmemDemo1.c
new file mode 100644
index 0000000..effff1b
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo1/progmemDemo1.c	
@@ -0,0 +1,32 @@
+                              /* First steps into using program memory */
+
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/pgmspace.h>
+#include "USART.h"
+
+const char myVeryLongString[] PROGMEM = "\r\nHi there, \
+this is an example of a long string.\r\n\
+The kind that you wouldn't want to store in RAM.\r\n";
+const uint16_t sixteenBits PROGMEM = 12345;
+
+int main(void) {
+  initUSART();
+  char oneLetter;
+  uint8_t i;
+
+  while (1) {
+    for (i = 0; i < sizeof(myVeryLongString); i++) {
+      oneLetter = pgm_read_byte(&(myVeryLongString[i]));
+      transmitByte(oneLetter);
+      _delay_ms(100);     /* slow it down to simulate typing effect :) */
+    }
+    _delay_ms(1000);
+
+    printWord(&sixteenBits);      /* this throws a compiler warning... */
+    transmitByte('\r');
+    transmitByte('\n');
+    printWord(pgm_read_word(&sixteenBits));
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo2/Makefile b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo2/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo2/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo2/progmemDemo2.c b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo2/progmemDemo2.c
new file mode 100644
index 0000000..c2748d7
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo2/progmemDemo2.c	
@@ -0,0 +1,37 @@
+                             /* Second steps into using program memory */
+                                  /* Storing the addresses in pointers */
+
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/pgmspace.h>
+#include "USART.h"
+
+const char myVeryLongString[] PROGMEM = "\r\nHi there, \
+this is an example of a long string.\r\n\
+The kind that you wouldn't want to store in RAM.\r\n";
+const uint16_t sixteenBits PROGMEM = 12345;
+
+int main(void) {
+  initUSART();
+
+  const char *stringPointer;
+  const uint16_t *wordPointer;
+  uint8_t i;
+  char oneLetter;
+
+  stringPointer = &myVeryLongString[0];       /* address of first char */
+  // stringPointer = myVeryLongString;                /* same as above */
+  wordPointer = &sixteenBits;                 /* address of first byte */
+
+  while (1) {
+    for (i = 0; i < sizeof(myVeryLongString); i++) {
+      oneLetter = pgm_read_byte(stringPointer + i);
+      transmitByte(oneLetter);
+      _delay_ms(100);     /* slow it down to simulate typing effect :) */
+    }
+    _delay_ms(1000);
+
+    printWord(pgm_read_word(wordPointer));
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo3/Makefile b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo3/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo3/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo3/progmemDemo3.c b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo3/progmemDemo3.c
new file mode 100644
index 0000000..31df8cb
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo3/progmemDemo3.c	
@@ -0,0 +1,33 @@
+                               /* Third step into using program memory */
+                                      /* Passing pointers to functions */
+
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/pgmspace.h>
+#include "USART.h"
+
+const char myVeryLongString1[] PROGMEM = "\r\nHi there, \
+this is an example of a long string.\r\n\
+The kind that you wouldn't want to store in RAM.\r\n";
+const char myVeryLongString2[] PROGMEM = "All work and no play \
+makes Jack something something.\r\n";
+
+void printString_Progmem(const char *stringP) {
+  char oneLetter;
+  while ((oneLetter = pgm_read_byte(stringP))) {
+    transmitByte(oneLetter);
+    stringP++;
+    _delay_ms(100);                              /* only b/c it's cute */
+  }
+}
+
+int main(void) {
+  initUSART();
+  while (1) {
+    printString_Progmem(&myVeryLongString1[0]);
+    printString_Progmem(&myVeryLongString1[50]);
+    printString_Progmem(myVeryLongString2);
+    _delay_ms(1000);
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo4/Makefile b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo4/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo4/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo4/progmemDemo4.c b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo4/progmemDemo4.c
new file mode 100644
index 0000000..46b62fd
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo4/progmemDemo4.c	
@@ -0,0 +1,36 @@
+                              /* Fourth step into using program memory */
+                           /* Passing data array pointers to functions */
+
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/pgmspace.h>
+#include "USART.h"
+
+const uint16_t myData[] PROGMEM =
+    { 1111, 2222, 3333, 4444, 5555, 6666, 7777, 8888, 9999, 10000 };
+const uint16_t myData2[] PROGMEM = { 123, 456, 789, 012, 345, 678, 999 };
+
+void printData_Progmem(const uint16_t * dataPointer, uint8_t length) {
+  while (length) {
+    printWord((uint16_t) dataPointer);            /* print out address */
+    printString(":  ");
+    printWord(pgm_read_word(dataPointer));           /* print out data */
+    printString("\r\n");
+    dataPointer++;                                /* move to next byte */
+    length--;                                   /* one less byte to go */
+    _delay_ms(100);
+  }
+}
+
+int main(void) {
+  initUSART();
+  while (1) {
+    printData_Progmem(myData, sizeof(myData) / 2);
+    printString("\r\n");
+    _delay_ms(1000);
+    printData_Progmem(myData2, sizeof(myData2) / sizeof(myData2[0]));
+    printString("\r\n");
+    _delay_ms(1000);
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo5/Makefile b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo5/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo5/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo5/progmemDemo5.c b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo5/progmemDemo5.c
new file mode 100644
index 0000000..98c7d0e
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo5/progmemDemo5.c	
@@ -0,0 +1,68 @@
+                              /* Fourth step into using program memory */
+                           /* Passing data array pointers to functions */
+
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/pgmspace.h>
+#include "USART.h"
+
+const uint16_t myData[] PROGMEM =
+    { 1111, 2222, 3333, 4444, 5555, 6666, 7777, 8888, 9999, 10000 };
+
+const char string1[] PROGMEM = "Hey, string one!\r\n";
+const char string2[] PROGMEM = "Oh my, string two!\r\n";
+const char *const stringIndex[] PROGMEM = { string1, string2 };
+
+
+void printData_Progmem(const uint16_t * dataPointer, uint8_t length) {
+  while (length) {
+    printWord((uint16_t) dataPointer);            /* print out address */
+    printString(":  ");
+    printWord(pgm_read_word(dataPointer));           /* print out data */
+    printString("\r\n");
+    dataPointer++;                                /* move to next byte */
+    length--;                                   /* one less byte to go */
+    _delay_ms(100);
+  }
+}
+void printString_Progmem(const char *stringP) {
+  char oneLetter;
+  while ((oneLetter = pgm_read_byte(stringP))) {
+    transmitByte(oneLetter);
+    stringP++;
+  }
+}
+
+int main(void) {
+  initUSART();
+
+  uint8_t myArray[] = { 10, 11, 12 };
+  uint8_t *p;
+  uint8_t i;
+  p = &myArray[0];
+  for (i = 0; i < sizeof(myArray); i++) {
+    printByte(*(p + i));
+    printString("\r\n");
+    _delay_ms(1000);
+  }
+
+
+                                                       /* To use them: */
+  char *stringPointer;
+                /* Get the pointer to the string you want from PROGMEM */
+
+  stringPointer = (char *) pgm_read_word(&stringIndex[0]);
+  printString_Progmem(stringPointer);
+                                                                 /* or */
+  stringPointer = (char *) pgm_read_word(&stringIndex[1]);
+  printString_Progmem(&stringPointer[0]);
+                                                                 /* or */
+  printString_Progmem(PSTR("And this string got inlined.\r\n"));
+
+  while (1) {
+    printData_Progmem(myData, sizeof(myData) / sizeof(myData[0]));
+    printString("\r\n");
+    _delay_ms(1000);
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/Makefile b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/allDigits.h b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/allDigits.h
new file mode 100644
index 0000000..da176f5
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/allDigits.h	
@@ -0,0 +1,14923 @@
+const uint8_t DPCM_one_8000[] PROGMEM = {
+  153,
+  90,
+  106,
+  150,
+  105,
+  86,
+  150,
+  106,
+  150,
+  85,
+  165,
+  150,
+  165,
+  169,
+  90,
+  85,
+  102,
+  149,
+  166,
+  105,
+  153,
+  165,
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+  165,
+  105,
+  105,
+  105,
+  85,
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+  89,
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+  169,
+  150,
+  150,
+  105,
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+  105,
+  90,
+  85,
+  150,
+  105,
+  106,
+  90,
+  165,
+  105,
+  90,
+  90,
+  89,
+  90,
+  105,
+  106,
+  154,
+  153,
+  165,
+  149,
+  105,
+  105,
+  149,
+  105,
+  102,
+  154,
+  105,
+  105,
+  170,
+  102,
+  150,
+  154,
+  101,
+  154,
+  85,
+  102,
+  154,
+  149,
+  170,
+  149,
+  165,
+  169,
+  154,
+  105,
+  106,
+  89,
+  101,
+  165,
+  89,
+  169,
+  106,
+  105,
+  102,
+  89,
+  150,
+  101,
+  169,
+  101,
+  86,
+  165,
+  106,
+  150,
+  149,
+  101,
+  165,
+  169,
+  86,
+  169,
+  102,
+  170,
+  150,
+  153,
+  105,
+  154,
+  89,
+  165,
+  102,
+  86,
+  150,
+  105,
+  149,
+  150,
+  150,
+  149,
+  165,
+  169,
+  106,
+  165,
+  105,
+  149,
+  105,
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+  85,
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+  86,
+  150,
+  165,
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+  150,
+  105,
+  154,
+  89,
+  149,
+};
+const uint8_t DPCM_two_8000[] PROGMEM = {
+  153,
+  105,
+  154,
+  102,
+  101,
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+  133,
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+  85,
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+  106,
+  150,
+  89,
+  105,
+  154,
+  165,
+  165,
+  150,
+  105,
+  106,
+  150,
+  153,
+  90,
+  85,
+  106,
+  149,
+  86,
+  89,
+  102,
+  154,
+  85,
+  169,
+  105,
+  170,
+  85,
+  105,
+  102,
+  153,
+  153,
+  86,
+  153,
+  106,
+  90,
+  149,
+  165,
+};
+const uint8_t DPCM_three_8000[] PROGMEM = {
+  153,
+  149,
+  169,
+  89,
+  150,
+  89,
+  166,
+  102,
+  102,
+  165,
+  153,
+  102,
+  90,
+  90,
+  101,
+  154,
+  149,
+  166,
+  105,
+  106,
+  102,
+  154,
+  105,
+  150,
+  153,
+  102,
+  166,
+  149,
+  150,
+  150,
+  89,
+  166,
+  90,
+  149,
+  105,
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+};
+const uint8_t DPCM_four_8000[] PROGMEM = {
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+  153,
+  101,
+};
+const uint8_t DPCM_six_8000[] PROGMEM = {
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+  106,
+  90,
+  86,
+  102,
+};
+const uint8_t DPCM_seven_8000[] PROGMEM = {
+  154,
+  149,
+  169,
+  101,
+  86,
+  165,
+  106,
+  101,
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+  150,
+  150,
+  165,
+  150,
+  166,
+  154,
+  89,
+  169,
+  153,
+  105,
+  106,
+  105,
+  90,
+  105,
+  154,
+  105,
+  153,
+  105,
+  89,
+  169,
+  165,
+  153,
+  86,
+  169,
+  105,
+  85,
+  165,
+  169,
+  105,
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+  89,
+  90,
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+  149,
+  102,
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+  106,
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+  153,
+  165,
+  86,
+  166,
+  101,
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+  165,
+  150,
+  165,
+  165,
+  169,
+  165,
+  90,
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+  154,
+  105,
+  170,
+  106,
+  89,
+  90,
+  105,
+  154,
+  85,
+  154,
+  102,
+  154,
+  102,
+  150,
+  169,
+  86,
+  90,
+  154,
+  101,
+  165,
+  169,
+  101,
+  150,
+  150,
+  169,
+  102,
+  153,
+  105,
+  90,
+  154,
+  86,
+  166,
+  105,
+  150,
+  154,
+  149,
+  154,
+  106,
+  150,
+  150,
+  169,
+  85,
+  169,
+  101,
+  165,
+  105,
+  105,
+  89,
+  165,
+  90,
+  106,
+  85,
+  169,
+  106,
+  85,
+  106,
+  90,
+  169,
+  150,
+  90,
+  149,
+  165,
+  153,
+  169,
+  106,
+  105,
+  165,
+  169,
+  105,
+  149,
+  105,
+  102,
+  90,
+  150,
+  154,
+  89,
+  150,
+  165,
+  154,
+  102,
+  169,
+  102,
+  149,
+  166,
+  101,
+  101,
+  169,
+  150,
+  165,
+  165,
+  90,
+  101,
+  153,
+  105,
+  150,
+  106,
+  85,
+  170,
+  90,
+  153,
+  86,
+  90,
+  102,
+  105,
+  101,
+  166,
+  85,
+  150,
+  165,
+  154,
+  105,
+  166,
+  154,
+  106,
+  90,
+  86,
+  101,
+  90,
+  86,
+  150,
+  150,
+  154,
+  150,
+  154,
+  86,
+  149,
+  165,
+  106,
+  105,
+  149,
+  165,
+  166,
+  106,
+  86,
+  106,
+  89,
+  170,
+  90,
+  102,
+  154,
+  90,
+  89,
+  101,
+  90,
+  89,
+  150,
+  165,
+  105,
+  149,
+};
+const uint8_t DPCM_zero_8000[] PROGMEM = {
+  153,
+  153,
+  106,
+  89,
+  154,
+  101,
+  90,
+  105,
+  106,
+  89,
+  165,
+  101,
+  150,
+  153,
+  101,
+  90,
+  154,
+  86,
+  165,
+  89,
+  150,
+  102,
+  153,
+  165,
+  153,
+  105,
+  86,
+  169,
+  106,
+  86,
+  90,
+  90,
+  149,
+  170,
+  165,
+  150,
+  85,
+  90,
+  102,
+  150,
+  149,
+  90,
+  165,
+  165,
+  105,
+  166,
+  90,
+  106,
+  149,
+  169,
+  106,
+  150,
+  105,
+  105,
+  85,
+  101,
+  150,
+  154,
+  166,
+  90,
+  102,
+  106,
+  150,
+  149,
+  169,
+  86,
+  149,
+  106,
+  105,
+  169,
+  150,
+  165,
+  169,
+  169,
+  166,
+  102,
+  105,
+  153,
+  85,
+  89,
+  153,
+  166,
+  105,
+  102,
+  90,
+  150,
+  165,
+  101,
+  106,
+  102,
+  101,
+  105,
+  169,
+  153,
+  153,
+  165,
+  165,
+  106,
+  101,
+  166,
+  101,
+  150,
+  153,
+  169,
+  166,
+  105,
+  154,
+  85,
+  101,
+  102,
+  86,
+  105,
+  154,
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+  105,
+  166,
+  106,
+  105,
+  149,
+  154,
+  105,
+  102,
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+  86,
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+  150,
+  90,
+  101,
+  170,
+  89,
+  150,
+  149,
+  165,
+  106,
+  101,
+  105,
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+  166,
+  86,
+  90,
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+  169,
+  153,
+  153,
+  150,
+  166,
+  102,
+  105,
+  153,
+  150,
+  101,
+  169,
+  102,
+  153,
+  150,
+  102,
+  102,
+  153,
+  153,
+  153,
+  166,
+  166,
+  106,
+  106,
+  89,
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+  105,
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+  153,
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+  102,
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+  102,
+  89,
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+  101,
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+  101,
+  153,
+  102,
+  102,
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+  102,
+  102,
+  101,
+  153,
+  153,
+  150,
+  90,
+  105,
+  86,
+  153,
+  150,
+  102,
+  102,
+  89,
+  89,
+  153,
+  166,
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+  89,
+  105,
+  153,
+  86,
+  106,
+  89,
+  102,
+  102,
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+  170,
+  101,
+  153,
+  153,
+  154,
+  102,
+  166,
+  102,
+  106,
+  105,
+  85,
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+  153,
+  105,
+  101,
+  90,
+  90,
+  106,
+  105,
+  130,
+  163,
+  169,
+  173,
+  106,
+  86,
+  74,
+  86,
+  165,
+  169,
+  165,
+  102,
+  105,
+  150,
+  150,
+  90,
+  86,
+  162,
+  154,
+  176,
+  193,
+  243,
+  60,
+  44,
+  50,
+  2,
+  199,
+  150,
+  184,
+  244,
+  164,
+  101,
+  105,
+  106,
+  106,
+  90,
+  9,
+  90,
+  154,
+  15,
+  63,
+  60,
+  195,
+  211,
+  200,
+  120,
+  60,
+  253,
+  119,
+  13,
+  6,
+  22,
+  151,
+  231,
+  214,
+  145,
+  149,
+  233,
+  224,
+  243,
+  242,
+  206,
+  60,
+  60,
+  54,
+  27,
+  207,
+  195,
+  132,
+  144,
+  161,
+  230,
+  245,
+  232,
+  100,
+  24,
+  157,
+  190,
+  79,
+  15,
+  15,
+  51,
+  192,
+  226,
+  208,
+  234,
+  61,
+  60,
+  40,
+  25,
+  95,
+  111,
+  143,
+  83,
+  69,
+  150,
+  235,
+  208,
+  243,
+  240,
+  226,
+  48,
+  12,
+  61,
+  30,
+  111,
+  139,
+  195,
+  131,
+  195,
+  231,
+  245,
+  164,
+  112,
+  120,
+  125,
+  189,
+  15,
+  15,
+  15,
+  11,
+  0,
+  192,
+  176,
+  252,
+  252,
+  124,
+  25,
+  10,
+  95,
+  171,
+  149,
+  130,
+  65,
+  170,
+  250,
+  180,
+  60,
+  60,
+  63,
+  15,
+  7,
+  0,
+  240,
+  248,
+  188,
+  60,
+  28,
+  74,
+  247,
+  229,
+  224,
+  96,
+  165,
+  186,
+  182,
+  144,
+  240,
+  240,
+  252,
+  60,
+  8,
+  3,
+  242,
+  248,
+  244,
+  56,
+  30,
+  107,
+  244,
+  240,
+  112,
+  124,
+  107,
+  151,
+  214,
+  194,
+  240,
+  248,
+  60,
+  12,
+  2,
+  164,
+  253,
+  61,
+  8,
+  2,
+  107,
+  239,
+  166,
+  65,
+  86,
+  170,
+  174,
+  90,
+  86,
+  192,
+  240,
+  252,
+  63,
+  0,
+  80,
+  63,
+  15,
+  131,
+  128,
+  105,
+  111,
+  195,
+  208,
+  180,
+  47,
+  154,
+  224,
+  180,
+  110,
+  128,
+  252,
+  63,
+  15,
+  64,
+  125,
+  15,
+  195,
+  240,
+  21,
+  7,
+  249,
+  249,
+  20,
+  85,
+  186,
+  106,
+  85,
+  90,
+  111,
+  144,
+  188,
+  31,
+  130,
+  208,
+  15,
+  195,
+  244,
+  61,
+  1,
+  229,
+  191,
+  150,
+  144,
+  26,
+  91,
+  213,
+  101,
+  26,
+  155,
+  164,
+  15,
+  195,
+  240,
+  56,
+  1,
+  252,
+  63,
+  2,
+  128,
+  43,
+  234,
+  248,
+  6,
+  66,
+  249,
+  169,
+  85,
+  86,
+  174,
+  170,
+  64,
+  252,
+  63,
+  0,
+  144,
+  15,
+  241,
+  252,
+  5,
+  65,
+  191,
+  91,
+  192,
+  105,
+  111,
+  165,
+  89,
+  10,
+  150,
+  170,
+  149,
+  3,
+  240,
+  252,
+  1,
+  64,
+  127,
+  195,
+  240,
+  25,
+  27,
+  253,
+  11,
+  65,
+  249,
+  190,
+  85,
+  89,
+  91,
+  150,
+  165,
+  104,
+  7,
+  240,
+  252,
+  2,
+  64,
+  191,
+  71,
+  192,
+  42,
+  107,
+  244,
+  45,
+  11,
+  230,
+  249,
+  5,
+  165,
+  185,
+  106,
+  85,
+  160,
+  15,
+  195,
+  240,
+  6,
+  82,
+  254,
+  15,
+  0,
+  175,
+  155,
+  208,
+  164,
+  47,
+  170,
+  148,
+  6,
+  154,
+  229,
+  105,
+  101,
+  96,
+  31,
+  195,
+  224,
+  7,
+  227,
+  252,
+  25,
+  1,
+  190,
+  95,
+  64,
+  110,
+  75,
+  209,
+  228,
+  26,
+  166,
+  244,
+  41,
+  106,
+  112,
+  63,
+  199,
+  208,
+  11,
+  211,
+  248,
+  5,
+  65,
+  254,
+  105,
+  64,
+  110,
+  170,
+  165,
+  85,
+  90,
+  170,
+  164,
+  85,
+  170,
+  172,
+  7,
+  249,
+  228,
+  2,
+  249,
+  255,
+  64,
+  84,
+  127,
+  165,
+  84,
+  106,
+  170,
+  90,
+  85,
+  106,
+  154,
+  165,
+  69,
+  170,
+  253,
+  128,
+  127,
+  238,
+  128,
+  62,
+  175,
+  244,
+  5,
+  90,
+  254,
+  85,
+  85,
+  110,
+  164,
+  105,
+  90,
+  165,
+  106,
+  85,
+  86,
+  190,
+  86,
+  0,
+  255,
+  86,
+  0,
+  127,
+  255,
+  208,
+  6,
+  171,
+  245,
+  69,
+  86,
+  171,
+  149,
+  101,
+  106,
+  149,
+  165,
+  90,
+  149,
+  186,
+  149,
+  128,
+  191,
+  209,
+  64,
+  31,
+  251,
+  240,
+  2,
+  171,
+  254,
+  65,
+  86,
+  171,
+  229,
+  70,
+  170,
+  153,
+  86,
+  150,
+  153,
+  90,
+  165,
+  168,
+  7,
+  253,
+  16,
+  0,
+  255,
+  190,
+  64,
+  42,
+  190,
+  164,
+  21,
+  170,
+  170,
+  80,
+  110,
+  170,
+  149,
+  106,
+  149,
+  165,
+  106,
+  165,
+  100,
+  31,
+  252,
+  64,
+  0,
+  255,
+  229,
+  64,
+  27,
+  234,
+  165,
+  6,
+  170,
+  90,
+  85,
+  110,
+  149,
+  85,
+  106,
+  165,
+  101,
+  90,
+  165,
+  164,
+  27,
+  253,
+  64,
+  1,
+  255,
+  229,
+  65,
+  91,
+  234,
+  90,
+  85,
+  90,
+  170,
+  165,
+  85,
+  102,
+  170,
+  166,
+  149,
+  86,
+  169,
+  90,
+  168,
+  6,
+  255,
+  164,
+  0,
+  107,
+  249,
+  85,
+  86,
+  170,
+  150,
+  85,
+  90,
+  170,
+  169,
+  85,
+  105,
+  166,
+  170,
+  85,
+  106,
+  170,
+  85,
+  102,
+  128,
+  111,
+  250,
+  0,
+  5,
+  190,
+  169,
+  85,
+  85,
+  170,
+  150,
+  165,
+  90,
+  165,
+  86,
+  170,
+  85,
+  149,
+  106,
+  149,
+  165,
+  85,
+  106,
+  160,
+  27,
+  254,
+  144,
+  5,
+  111,
+  165,
+  85,
+  101,
+  170,
+  149,
+  90,
+  150,
+  170,
+  85,
+  170,
+  165,
+  85,
+  106,
+  165,
+  86,
+  86,
+  170,
+  164,
+  6,
+  255,
+  144,
+  5,
+  90,
+  169,
+  85,
+  170,
+  150,
+  169,
+  86,
+  170,
+  101,
+  86,
+  170,
+  149,
+  86,
+  170,
+  149,
+  86,
+  169,
+  86,
+  170,
+  65,
+  111,
+  229,
+  85,
+  85,
+  170,
+  149,
+  90,
+  149,
+  106,
+  149,
+  106,
+  149,
+  90,
+  165,
+  85,
+  150,
+  170,
+  149,
+  90,
+  166,
+  106,
+  101,
+  85,
+  170,
+  165,
+  90,
+  149,
+  106,
+  165,
+  86,
+  169,
+  86,
+  169,
+  86,
+  169,
+  86,
+  165,
+  149,
+  170,
+  85,
+  86,
+  105,
+  86,
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+  89,
+  86,
+  170,
+  149,
+  90,
+  170,
+  89,
+  85,
+  106,
+  169,
+  86,
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+  106,
+  165,
+  86,
+  169,
+  86,
+  170,
+  85,
+  170,
+  149,
+  90,
+  165,
+  90,
+  165,
+  90,
+  169,
+  86,
+  90,
+  150,
+  149,
+  90,
+  165,
+  85,
+  170,
+  105,
+  169,
+  85,
+  170,
+  149,
+  90,
+  169,
+  85,
+  170,
+  85,
+  170,
+  85,
+  106,
+  149,
+  90,
+  170,
+  86,
+  169,
+  106,
+  85,
+  90,
+  170,
+  85,
+  170,
+  165,
+  85,
+  170,
+  169,
+  86,
+  170,
+  101,
+  86,
+  169,
+  86,
+  169,
+  85,
+  106,
+  149,
+  86,
+  170,
+  85,
+  102,
+  170,
+  90,
+  150,
+  101,
+  86,
+  170,
+  165,
+  86,
+  170,
+  105,
+  102,
+  165,
+  90,
+  169,
+  85,
+  106,
+  149,
+  90,
+  169,
+  85,
+  106,
+  165,
+  85,
+  90,
+  165,
+  85,
+  170,
+  149,
+  106,
+  169,
+  85,
+  106,
+  170,
+  85,
+  106,
+  106,
+  153,
+  85,
+  170,
+  165,
+  86,
+  170,
+  165,
+  154,
+  170,
+  85,
+  85,
+  170,
+  149,
+  165,
+  169,
+  86,
+  106,
+  169,
+  86,
+  106,
+  149,
+  89,
+  169,
+  90,
+  165,
+  90,
+  169,
+  85,
+  154,
+  165,
+  85,
+  154,
+  169,
+  85,
+  106,
+  165,
+  89,
+  106,
+  165,
+  101,
+  170,
+  165,
+  86,
+  106,
+  165,
+  90,
+  153,
+  90,
+  170,
+  90,
+  105,
+  165,
+  90,
+  150,
+  85,
+  170,
+  149,
+  90,
+  169,
+  85,
+  166,
+  169,
+  85,
+  170,
+  149,
+  86,
+  90,
+  149,
+  89,
+  170,
+  105,
+  89,
+  149,
+  170,
+  166,
+  86,
+};
+const uint8_t DPCM_point_8000[] PROGMEM = {
+  153,
+  169,
+  90,
+  89,
+  154,
+  90,
+  149,
+  154,
+  102,
+  150,
+  165,
+  150,
+  149,
+  165,
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+};
+const uint8_t DPCM_volts_8000[] PROGMEM = {
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+};
+const uint8_t DPCM_talkingvoltmeter_8000[] PROGMEM = {
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+  105,
+  101,
+  106,
+  90,
+  153,
+  106,
+  90,
+  149,
+  169,
+  86,
+  169,
+  166,
+  89,
+  149,
+  106,
+};
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/Makefile b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/Makefile
new file mode 100644
index 0000000..609e6e2
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/Makefile	
@@ -0,0 +1,186 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168
+F_CPU = 8000000
+BAUD = 9600
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## This is where your main() routine lives (without .c extension)
+TARGET = speech_1_bit_diff
+## If you've split your program into multiple .c / .h files, 
+## include the additional source here (without the .c or .h extension)
+LOCAL_SOURCE = 
+
+EXTRA_SOURCE_DIR = ../../../learningAVR/
+EXTRA_SOURCE_FILES = USART
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## Defined programs / locations
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+## Compilation options, type man avr-gcc if you're curious.
+CFLAGS = -mmcu=$(MCU) -DF_CPU=$(F_CPU)UL -DBAUD=$(BAUD) -Os -I. -I$(EXTRA_SOURCE_DIR)
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+CFLAGS += -Wall -Wstrict-prototypes
+CFLAGS += -g -ggdb
+CFLAGS += -ffunction-sections -fdata-sections -Wl,--gc-sections -Wl,--relax
+CFLAGS += -std=gnu99
+## CFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## CFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+
+## Lump target and extra source files together
+TARGET = $(strip $(basename $(MAIN)))
+SRC = $(TARGET).c
+EXTRA_SOURCE = $(addprefix $(EXTRA_SOURCE_DIR), $(EXTRA_SOURCE_FILES))
+SRC += $(EXTRA_SOURCE) 
+SRC += $(LOCAL_SOURCE) 
+
+## List of all header files
+HEADERS = $(SRC:.c=.h) 
+
+## For every .c file, compile an .o object file
+OBJ = $(SRC:.c=.o) 
+
+## Generic Makefile targets.  (Only .hex file is necessary)
+all: $(TARGET).hex
+
+%.hex: %.elf
+	$(OBJCOPY) -R .eeprom -O ihex $< $@
+
+%.elf: $(SRC)
+	$(CC) $(CFLAGS) $(SRC) --output $@ 
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SRC)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+eeprom: $(TARGET).eeprom
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/Speech_1_bit_diff.m b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/Speech_1_bit_diff.m
new file mode 100644
index 0000000..843a9cb
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/Speech_1_bit_diff.m	
@@ -0,0 +1,84 @@
+
+% Speech encoder for Mega644/GCC decoder
+clear all
+
+%===================================%the Encoder
+[d,r] = wavread('mega644small.wav'); %4
+%scale to about unity
+res = 1/(max(max(d),abs(min(d)) ));
+dd = diff(d * res);
+%init the code vector
+ddcode = zeros(1,length(dd));
+
+brkpt1= 0 ;
+%quantize the first derivative
+ddcode(find(dd<brkpt1)) = 0;
+ddcode(find(dd>=brkpt1)) = 1;
+
+%make the length of ddcode a multiple of 8
+ddcode = [ddcode,zeros(1,8-mod(length(ddcode),8))];
+length(ddcode)
+index=1;
+for i=1:8:length(ddcode)
+    packed(index)= ...
+        ddcode(i)*128 + ddcode(i+1)*64 + ...
+        ddcode(i+2)*32 + ddcode(i+3)*16 + ...
+        ddcode(i+4)*8 + ddcode(i+5)*4 + ...
+        ddcode(i+6)*2 + ddcode(i+7) ;
+    index=index+1;
+end
+%make a textfile with GCC source code in it.
+fname='mega644_1_bit.h';
+fid = fopen(fname,'w');
+fprintf(fid,'const prog_uint8_t mega644[%d]={\r',length(packed));
+for i=1:length(packed)-1
+    fprintf(fid,' %5d,\r',packed(i));
+end
+fprintf(fid,' %5d};\r',packed(end));
+fclose(fid);
+
+%===================================%the Decoder
+%value based on quantizer
+value = [-.16, .16];
+dl(1)=0;
+j=2;
+highpassfactor = 1/8;
+for i=1:length(packed)
+    p1 = round(bitand(packed(i),128)/128);
+    p2 = round(bitand(packed(i),64)/64);
+    p3 = round(bitand(packed(i),32)/32);
+    p4 = round(bitand(packed(i),16)/16);
+    p5 = round(bitand(packed(i),8)/8);
+    p6 = round(bitand(packed(i),4)/4);
+    p7 = round(bitand(packed(i),2)/2);
+    p8 = round(bitand(packed(i),1)/1);
+    
+    %note that a bit of highpass has been added to reduce drift
+    dl(j) = dl(j-1)+ value(p1+1) - highpassfactor * dl(j-1);
+    j=j+1;
+    dl(j) = dl(j-1)+ value(p2+1) - highpassfactor * dl(j-1);
+    j=j+1;
+    dl(j) = dl(j-1)+ value(p3+1) - highpassfactor * dl(j-1);
+    j=j+1;
+    dl(j) = dl(j-1)+ value(p4+1) - highpassfactor * dl(j-1);
+    j=j+1;
+    dl(j) = dl(j-1)+ value(p5+1) - highpassfactor * dl(j-1);
+    j=j+1;
+    dl(j) = dl(j-1)+ value(p6+1) - highpassfactor * dl(j-1);
+    j=j+1;
+    dl(j) = dl(j-1)+ value(p7+1) - highpassfactor * dl(j-1);
+    j=j+1;
+    dl(j) = dl(j-1)+ value(p8+1) - highpassfactor * dl(j-1);
+    j=j+1;
+end
+% dl(1)=0;
+% for i=1:length(ddcode)
+%     dl(i) = dl(i-1)+ value(ddcode(i)+1) - .125*dl(i-1); % .* w';
+% end
+
+%return
+%====================================%playback and graphing
+% sound(dl,r);
+dl = dl/(max(abs(dl))+.001);
+wavwrite(dl', 'mega644_1_bit.wav');
+
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/Welcome4760small.wav b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/Welcome4760small.wav
new file mode 100644
index 0000000..bc26990
Binary files /dev/null and b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/Welcome4760small.wav differ
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/mega644_1_bit.h b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/mega644_1_bit.h
new file mode 100644
index 0000000..106cfc6
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/mega644_1_bit.h	
@@ -0,0 +1 @@
+const uint8_t mega644[3280] PROGMEM ={
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   255,
   253,
   255,
   255,
   255,
   255,
   255,
   255,
   253,
   255,
   239,
   238,
   127,
   159,
   187,
   223,
   109,
   255,
   185,
   238,
   109,
   158,
   238,
   230,
   127,
   182,
   204,
   230,
   118,
   185,
   249,
   111,
   118,
   255,
   172,
   227,
   123,
   188,
   231,
    56,
   207,
   166,
   121,
   190,
   239,
   251,
   227,
   188,
     0,
     2,
   255,
   252,
   255,
   128,
     0,
    12,
   241,
    30,
   241,
   238,
    24,
    64,
    31,
    48,
   255,
    30,
   241,
   198,
     5,
   224,
    31,
    32,
   243,
    14,
     0,
    30,
     1,
   240,
    15,
   128,
     0,
     3,
   193,
   175,
   135,
   220,
    56,
    32,
   120,
    53,
   248,
    56,
   241,
   128,
    15,
   193,
   135,
   240,
    65,
   224,
     1,
   252,
    48,
    63,
   136,
    12,
     0,
    63,
   135,
   131,
   248,
     0,
   128,
     7,
   240,
   240,
   127,
     0,
    16,
     1,
   252,
    60,
    31,
   192,
    32,
     0,
   254,
    30,
    15,
   135,
     2,
     0,
   254,
    10,
    63,
   135,
   128,
     1,
   248,
    48,
   252,
    60,
    32,
     7,
   193,
   199,
   193,
   199,
     0,
    60,
    28,
   124,
    56,
   224,
     3,
   193,
   207,
   135,
    28,
     0,
   124,
    49,
   240,
   199,
   128,
    15,
   134,
    62,
    25,
   224,
     1,
   240,
    79,
   199,
    60,
     0,
    62,
     9,
   248,
   231,
   192,
     7,
   193,
    63,
    24,
   240,
     0,
   240,
    47,
   199,
   158,
     0,
    30,
     5,
   248,
   243,
   192,
     3,
   193,
   190,
    31,
   112,
     0,
   248,
    55,
   195,
   231,
     0,
    15,
     2,
   252,
    62,
     0,
     1,
   240,
   111,
   195,
   224,
   128,
    15,
     2,
   252,
    31,
     0,
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   255,
   255,
   255,
   254};
\ No newline at end of file
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/speech_1_bit_diff.c b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/speech_1_bit_diff.c
new file mode 100644
index 0000000..881954b
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_1bit/speech_1_bit_diff.c	
@@ -0,0 +1,113 @@
+//Voice decompressor example
+#include <inttypes.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include <avr/pgmspace.h>
+#include "USART.h"
+
+#define TableSize 3280 //refers to the following incl file
+//Contains the packed 1-bit codes for syntehsis
+#include "mega644_1_bit.h" 
+
+//reconstruction differentials 
+//volatile signed char PCMvalue[4] = {-78, -16, 16, 78};
+volatile signed char PCMvalue[2] = {-10, 10};
+
+volatile unsigned int outI, tableI;     //indexes
+volatile unsigned char cycle ;  		//decode phase counter
+volatile signed char out, lastout, newvalue;		//output values
+volatile unsigned char p1,p2,p3,p4,p5,p6,p7,p8;	//hold 8 differentials
+volatile unsigned char packed	;		//byte containing 4 2-bit values	
+volatile uint8_t speaking;			/* flag for whether currently speaking or not */
+
+//generate waveform at 7812 scamples/sec
+ISR (TIMER2_COMPA_vect){ 
+  //compute next sample
+  cycle = outI & 7;  // outI modulo 8
+  if (cycle==0)      //do we need to unpack more data?
+    {
+      if (tableI<TableSize)  //} of stored wave?
+        {
+	  //unpack a table entry into 2-bit indexs
+	  // pgm_read_byte (address_short) 
+	  packed = pgm_read_byte(&mega644[tableI]) ;
+	  //packed = DPCMAllDigits[tableI];
+	  p1 = (packed & 128) == 128 ;
+	  p2 = (packed & 64) == 64 ;
+	  p3 = (packed & 32) == 32 ;
+	  p4 = (packed & 16) == 16 ; 
+	  p5 = (packed & 8) == 8 ; 
+	  p6 = (packed & 4) == 4 ; 
+	  p7 = (packed & 2) == 2 ; 
+	  p8 = (packed & 1) == 1 ; 
+	  tableI++ ; 
+        } //end unpack table entry 
+      //compute the output and send to PWM
+      newvalue = PCMvalue[p1] ;  	
+    }
+  else if (cycle==1)    //don't need to unpack yet--just ouput
+    newvalue = PCMvalue[p2] ; 
+  else if (cycle==2)
+    newvalue = PCMvalue[p3] ; 
+  else if (cycle==3) 
+    newvalue = PCMvalue[p4] ; 
+  else if (cycle==4) 
+    newvalue = PCMvalue[p5] ; 
+  else if (cycle==5) 
+    newvalue = PCMvalue[p6] ; 
+  else if (cycle==6) 
+    newvalue = PCMvalue[p7] ; 
+  else if (cycle==7) 
+    newvalue = PCMvalue[p8] ; 
+  
+  out = lastout + newvalue - (lastout>>3);
+  //update outputs
+  OCR0A = out + 128;
+  lastout = out;
+  outI++;
+  //at end, turn off TCCRO
+  if (tableI==TableSize) TCCR2B = 0;	  
+} //ISR
+
+int main(void){ 
+  DDRD |= (1<<PD6); 
+  DDRB |= (1<<PB0); 
+  // turn on pwm with period= 256 cycles 
+  // (62,500 samples/sec) in fast PWM mode.
+  // BUT OCR0A update is done using timer2 at 7800/sec
+  // timer 0 runs at full rate set in MAIN loop; TCCR0B = 1 ;
+  // turn on fast PWM and OC0A output
+  // 16 microsec per PWM cycle sample time
+  TCCR0A = (1<<COM0A0) | (1<<COM0A1) | (1<<WGM00) | (1<<WGM01) ; 
+  OCR0A = 128 ; // initialize PWM to half full scale
+  TCCR0B = (1<<CS00);	 /* full speed */
+  // turn on timer2 set to overflow at 7812 Hz 
+  // (prescaler set to divide by 8)
+  TCCR2A = (1<<WGM21);		/* CTC, count to OCR2A */
+  OCR2A = 128;			/* control sample playback frequency */
+  TCCR2B = (1<<CS21); 		/* clock source / 8 = 1MHz */
+  TIMSK2 = (1<<OCIE2A);   // turn on compare interrupt
+
+  sei();
+  
+  while(1) {  
+    
+    //init the output indexes
+    outI = 0; 
+    tableI = 0; 
+    //init the ouptut value
+    lastout = 0; 
+    // turn on PWM
+    TCCR2B = (1<<CS21);
+    //wait until the speech is done then
+    //time delay the next utterance.
+    while (TCCR2B>0){}; 
+    OCR0A = 128 ;
+    _delay_ms(500);
+    PORTB ^= (1<<PB0); 
+    
+  } // end while  
+}  //end main
+
+
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/.gitignore b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/.gitignore
new file mode 100644
index 0000000..83e16f7
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/.gitignore	
@@ -0,0 +1,3 @@
+*.wav
+DPCM*.h
+
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/Find2Code476.m b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/Find2Code476.m
new file mode 100644
index 0000000..f5cc5f1
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/Find2Code476.m	
@@ -0,0 +1,24 @@
+clear all
+%use an optimizer to find the best parameters
+%for an utterance
+%The encoder/decoder go into an iterative scheme to find the
+%best 3 break points and 4 reconstruction values
+%===================================%the Encoder
+[d,r] = wavread('C:\Documents and Settings\bruce land\My Documents\Matlab\Speech\SineSynth\test4small.WAV'); %4
+%scale to about unity
+res = 1/(max(max(d),abs(min(d)) ));
+dd = diff(d * res);
+
+%parameters
+value = [-.16, -.026 .026 .16];
+brkpt1=-0.05; brkpt2=0 ; brkpt3=0.05;
+%initial parameter guess
+p0 = [brkpt1, brkpt2, brkpt3, ...
+    value(1),value(2),value(3),value(4) ];
+
+p = fminsearch(@FindOpt,p0,[],d,dd);
+%ChiMin = fmins ('chisq', density0, options, [], smat, observed,
+%fixdensity);
+
+%=================================%print parameters
+p
\ No newline at end of file
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/FindOpt.m b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/FindOpt.m
new file mode 100644
index 0000000..3077e8a
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/FindOpt.m	
@@ -0,0 +1,16 @@
+function fit = FindOpt(p,d,dd)
+p
+%init the code vector
+ddcode = zeros(1,length(dd));
+%quantize the first derivative
+ddcode(find(dd<p(1)))=0;
+ddcode(find(dd>=p(1) & dd<p(2)))=1;
+ddcode(find(dd>=p(2) & dd<p(3)))=2;
+ddcode(find(dd>=p(3)))=3;
+
+dl = zeros(1,length(ddcode));
+for i=2:length(ddcode)
+    dl(i) = dl(i-1)+ p(ddcode(i)+4) - .125*dl(i-1); % .* w';
+end
+
+fit = mean((d(2:end)-dl').^2);
\ No newline at end of file
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/Makefile b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/Makefile
new file mode 100644
index 0000000..09f3b4d
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/Makefile	
@@ -0,0 +1,186 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168
+F_CPU = 8000000
+BAUD = 9600
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## This is where your main() routine lives (without .c extension)
+TARGET = speech_644_GCC
+## If you've split your program into multiple .c / .h files, 
+## include the additional source here (without the .c or .h extension)
+LOCAL_SOURCE = 
+
+EXTRA_SOURCE_DIR = ../../../learningAVR/
+EXTRA_SOURCE_FILES = USART
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## Defined programs / locations
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+## Compilation options, type man avr-gcc if you're curious.
+CFLAGS = -mmcu=$(MCU) -DF_CPU=$(F_CPU)UL -DBAUD=$(BAUD) -Os -I. -I$(EXTRA_SOURCE_DIR)
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+CFLAGS += -Wall -Wstrict-prototypes
+CFLAGS += -g -ggdb
+CFLAGS += -ffunction-sections -fdata-sections -Wl,--gc-sections -Wl,--relax
+CFLAGS += -std=gnu99
+## CFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## CFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+
+## Lump target and extra source files together
+TARGET = $(strip $(basename $(MAIN)))
+SRC = $(TARGET).c
+EXTRA_SOURCE = $(addprefix $(EXTRA_SOURCE_DIR), $(EXTRA_SOURCE_FILES))
+SRC += $(EXTRA_SOURCE) 
+SRC += $(LOCAL_SOURCE) 
+
+## List of all header files
+HEADERS = $(SRC:.c=.h) 
+
+## For every .c file, compile an .o object file
+OBJ = $(SRC:.c=.o) 
+
+## Generic Makefile targets.  (Only .hex file is necessary)
+all: $(TARGET).hex
+
+%.hex: %.elf
+	$(OBJCOPY) -R .eeprom -O ihex $< $@
+
+%.elf: $(SRC)
+	$(CC) $(CFLAGS) $(SRC) --output $@ 
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SRC)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+eeprom: $(TARGET).eeprom
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/Speech_encode_GCC.m b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/Speech_encode_GCC.m
new file mode 100644
index 0000000..f7a6eab
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/Speech_encode_GCC.m	
@@ -0,0 +1,83 @@
+
+% Speech encoder for Mega644/GCC decoder
+clear all
+
+%===================================%the Encoder
+[d,r] = wavread('Z:\EEdocs\4760\ece4760labstuff\GCCmega644\Speech\AllDigits8khz.WAV'); %4
+%scale to about unity
+res = 1/(max(max(d),abs(min(d)) ));
+dd = diff(d * res);
+%init the code vector
+ddcode = zeros(1,length(dd));
+
+% brkpt1=-0.5; brkpt2=0 ; brkpt3=0.5;
+% value = [-.75, -.25 .25 .75];
+%breakpoints are changeable
+brkpt1=-0.05; brkpt2=0 ; brkpt3=0.05;
+%quantize the first derivative
+ddcode(find(dd<brkpt1))=0;
+ddcode(find(dd>=brkpt1 & dd<brkpt2))=1;
+ddcode(find(dd>=brkpt2 & dd<brkpt3))=2;
+ddcode(find(dd>=brkpt3))=3;
+
+%make the length of ddcode a multiple of 4
+ddcode = [ddcode,zeros(1,4-mod(length(ddcode),4))];
+length(ddcode)
+index=1;
+for i=1:4:length(ddcode)
+    packed(index)=ddcode(i)*64 + ddcode(i+1)*16 + ...
+        ddcode(i+2)*4 + ddcode(i+3) ;
+    index=index+1;
+end
+%make a textfile with GCC source code in it.
+fname='DPCMAllDigits.h';
+fid = fopen(fname,'w');
+fprintf(fid,'const prog_uint8_t DPCMAllDigits[%d]={\r',length(packed));
+for i=1:length(packed)-1
+    fprintf(fid,' %5d,\r',packed(i));
+end
+fprintf(fid,' %5d};\r',packed(end));
+fclose(fid);
+
+%===================================%the Decoder
+%value based on quantizer
+value = [-.16, -.026 .026 .16];
+dl(1)=0;
+j=2;
+for i=1:length(packed)
+    p1 = fix(bitand(packed(i),192)/64);
+    p2 = fix(bitand(packed(i),48)/16);
+    p3 = fix(bitand(packed(i), 12)/4);
+    p4 = fix(bitand(packed(i),3));
+    %note that a bit of highpass has been added to reduce drift
+    dl(j) = dl(j-1)+ value(p1+1) - .125*dl(j-1);
+    j=j+1;
+    dl(j) = dl(j-1)+ value(p2+1) - .125*dl(j-1);
+    j=j+1;
+    dl(j) = dl(j-1)+ value(p3+1) - .125*dl(j-1);
+    j=j+1;
+    dl(j) = dl(j-1)+ value(p4+1) - .125*dl(j-1);
+    j=j+1;
+end
+% dl(1)=0;
+% for i=1:length(ddcode)
+%     dl(i) = dl(i-1)+ value(ddcode(i)+1) - .125*dl(i-1); % .* w';
+% end
+
+%====================================%playback and graphing
+soundsc(dl,r);
+% Compare the spectrograms
+figure(1);clf
+
+subplot(211)
+spectrogram(d,256,r);
+colormap gray
+title('Original');
+
+subplot(212)
+spectrogram(dl,256,r);
+colormap gray
+title('synth');
+
+
+
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/downsample.m b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/downsample.m
new file mode 100644
index 0000000..b175c87
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/downsample.m	
@@ -0,0 +1,5 @@
+clear all
+%reads a file at 16kHz and outputs it a 8kHz, 8 bits
+[d,r] = wavread('test6.WAV');
+y = resample(d,1,2);
+wavwrite(y,8000,8,'test6small.wav')
\ No newline at end of file
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/sineWave.py b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/sineWave.py
new file mode 100644
index 0000000..ed0c618
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/sineWave.py	
@@ -0,0 +1,38 @@
+## Demo python program to create sine wave
+
+from struct import pack, unpack
+from math import sin, pi
+import wave
+import os
+import random
+
+
+RATE = 44100
+
+## GENERATE MONO FILE ##
+wv = wave.open('test_mono.wav', 'w')
+wv.setparams((1, 2, RATE, 0, 'NONE', 'not compressed'))
+maxVol=2**15-1.0 #maximum amplitude
+wvData=""
+for i in range(0, RATE*3):
+    wvData+=pack('h', maxVol*sin(2*pi*i*440.0/RATE))
+
+wv.writeframes(wvData)
+wv.close()
+os.system("mplayer test_mono.wav")
+
+## GENERATE STEREO FILE ##
+wv = wave.open('test_stereo.wav', 'w')
+wv.setparams((2, 2, RATE, 0, 'NONE', 'not compressed'))
+maxVol=2**15-1.0 #maximum amplitude
+waveData = ""
+for i in range(0, RATE*3):
+    t = 2*pi*i/RATE             # time-step in radians*sec
+    waveData+=pack('h', maxVol*sin(t*440.0)) #440Hz left
+    waveData+=pack('h', maxVol*sin(t*220.0)) #220Hz right
+    
+
+wv.writeframes(waveData)
+wv.close()
+os.system("mplayer test_stereo.wav")
+
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/speech_644_GCC.c b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/speech_644_GCC.c
new file mode 100644
index 0000000..130fddb
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/speech_644_GCC.c	
@@ -0,0 +1,109 @@
+//  Talking Voltmeter Example
+
+#include <inttypes.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include <avr/pgmspace.h>
+#include "pinDefines.h"
+
+#include "DPCM_rich_hello_world_8000.h"
+#define TABLE_NAME  DPCM_rich_hello_world_8000
+
+volatile uint16_t sampleNumber;         // sample index
+volatile int8_t   out, lastout;		// output values
+volatile uint8_t  p1, p2, p3, p4;	// hold 4 differentials
+const int8_t      PCMvalue[4] = {-20, -4, 4, 20};
+
+ISR (TIMER2_COMPA_vect){ 
+  /* Timer 2 controls sampling speed -- 
+     ISR reads new data, loads PWM output, OCR0A */
+  /* Since we can decode 4 2-bit values at once, need to know where
+     we are in the 4-step mini-cycle. */
+  uint8_t cycle = sampleNumber & 0b00000011; 	/* our 4 steps */
+  uint16_t tableEntry = sampleNumber >> 2;	/* 4 steps per table byte */
+  uint8_t  packedData;				/* the new byte */
+  switch(cycle){
+  case 0:  // Start of the cycle, unpack next byte of samples
+    if (tableEntry < sizeof(TABLE_NAME)){  
+      packedData = pgm_read_byte(&TABLE_NAME[tableEntry]) ;
+      p1 = (packedData>>6) & 3 ;
+      p2 = (packedData>>4) & 3 ;
+      p3 = (packedData>>2) & 3 ;
+      p4 = (packedData & 3); 
+    }
+    /* Add in the next PCM differential value */
+    out = lastout + PCMvalue[p1] - (lastout>>3) ;  	
+    break;
+  case 1:
+    out = lastout + PCMvalue[p2] - (lastout>>3) ;
+    break;
+  case 2:
+    out = lastout + PCMvalue[p3] - (lastout>>3) ; 
+    break;
+  case 3:
+    out = lastout + PCMvalue[p4] - (lastout>>3) ;
+    break;
+  }
+  /* Update PWM audio output */
+  OCR0A = out + 128;		/* re-center for 0-255 PWM */
+  lastout = out;		/* update last value */
+  sampleNumber++;		/* on to next sample */
+  
+  /* When done, turn off PWM, Timer0 */
+  if (sampleNumber == 4*sizeof(TABLE_NAME)-1) {
+    TCCR2B = 0;			/* disable sample-playback clock */
+    OCR0A = 128;	       	/* idle at mid-voltage */
+    lastout = 0;		/* start at 0 next time */
+  }
+} // end ISR
+
+void initTimer0(void){
+  // Timer 0 Configured for free-running PWM Audio Output
+  TCCR0A |= (1<<WGM00) | (1<<WGM01); /* fast PWM mode */
+  TCCR0A |= (1<<COM0A0) | (1<<COM0A1); /* output on PD6/OC0A */
+  TCCR0B = (1<<CS00);		       /* fastest clock */
+  OCR0A = 128 ;			       /* initialize mid-value */
+  SPEAKER_DDR |= (1<<SPEAKER);	       /* output PD6 / OC0A */
+}
+
+void initTimer2(void){
+  // Timer 2 loads OCR0A, defines sampling frequency
+  // Aiming for around 8kHz
+  TCCR2A = (1<<WGM21);	      /* CTC, count to OCR2A */
+  OCR2A = 128;		      /* controls sample playback frequency */
+  TCCR2B = (1<<CS21);	      /* clock source / 8 = 1MHz */
+  TIMSK2 = (1<<OCIE2A);	      /* turn on compare interrupt */
+  sei();
+}
+
+void initADC(void){
+  // ADC for Voltmeter function
+  ADMUX  |= (0b00001111 & PC5);  /* set mux to ADC5 */
+  DIDR0 |= _BV(ADC5D);		 /* turn off digital circuitry on PC5 */
+  ADMUX  |= (1 << REFS0);        /* reference voltage is AVCC, 5V */
+  ADCSRA |= (1 << ADPS1) | (1 << ADPS2); /* ADC clock prescaler /64 */
+  ADCSRA |= (1 << ADEN);        /* enable ADC */
+}
+
+int main(void){ 
+  uint8_t adcValue;
+  
+  initTimer0();
+  initTimer2();
+  initADC();
+
+  while(1) {  
+    sampleNumber = 0;		/* back to start of sample table */
+    TCCR2B = (1<<CS21);		/* start loading samples */
+    
+    /* Wait until done speaking, then delay some more. */
+    loop_until_bit_is_clear(TCCR2B, CS21);
+    _delay_ms(1000);
+    
+  } /*  end while  */
+  return(0);
+}  
+
+
+
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/wave2DPCM.py b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/wave2DPCM.py
new file mode 100644
index 0000000..cc4cefb
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/cornell/dpcm_2bit/wave2DPCM.py	
@@ -0,0 +1,128 @@
+## Given a .wav audio file, downsamples it to 8000 Hz and writes it out
+##  as a ADPCM file suitable for use with AVRs.
+
+from struct import unpack
+import wave
+import os
+import sys
+
+
+def unpackMono(waveFile):
+    w = wave.Wave_read(waveFile)
+    data = []
+    for i in range(w.getnframes()):
+        data.append(unpack("h", w.readframes(1))[0])
+    return(data)
+
+def scaleData(data):
+    scale = max(max(data), abs(min(data))) * 1.0
+    return([x/scale for x in data])
+
+def getDifferences(data):
+    differences = []
+    for i in range(len(data)-1):
+        differences.append(data[i+1]-data[i])
+    return(differences)
+
+def quantize(data, thresholds):
+    quantized = []
+    n = len(thresholds)
+    thresholdRange = range(n)
+    for d in data:
+        categorized = False
+        for i in thresholdRange:
+            if d <= thresholds[i]:
+                quantized.append(i)
+                categorized = True
+                break
+        if not categorized:
+            quantized.append(n)
+    return(quantized)
+
+def pack4(data):                # for 2-bit data
+    packedData = []
+    for i in range(len(data) / 4):
+        thisByte = 0
+        thisByte += 2**6 * data[4*i]
+        thisByte += 2**4 * data[4*i+1]
+        thisByte += 2**2 * data[4*i+2]
+        thisByte += data[4*i+3]
+        packedData.append(thisByte)
+    return(packedData)
+
+def pack2(data):                # for 1-bit data
+    packedData = []
+    for i in range(len(data) / 8):
+        thisByte = 0
+        thisByte += 2**7 * data[8*i]
+        thisByte += 2**6 * data[8*i+1]
+        thisByte += 2**5 * data[8*i+2]
+        thisByte += 2**4 * data[8*i+3]
+        thisByte += 2**3 * data[8*i+4]
+        thisByte += 2**2 * data[8*i+5]
+        thisByte += 2**1 * data[8*i+6]
+        thisByte += data[8*i+7]
+        packedData.append(thisByte)   
+    return(packedData)
+
+
+def packOneBitDPCM(filename):
+    data = unpackMono(filename)
+    data = scaleData(data)
+    differences = getDifferences(data)
+    quantized = quantize(differences, [0])
+    packed = pack2(quantized)
+    return(packed)
+
+def packTwoBitDPCM(filename):
+    data = unpackMono(filename)
+    data = scaleData(data)
+    differences = getDifferences(data)
+    quantized = quantize(differences, TWO_BIT_THRESHOLDS)
+    packed = pack4(quantized)
+    return(packed)
+
+def createHeader(filename, packedData):
+    baseFilename = filename[:-4]
+    outfile = open("DPCM_" + baseFilename + ".h", "w")
+    outfile.write('const uint8_t DPCM_{}[] PROGMEM = {{\n'.format(baseFilename))
+    for byte in packedData:
+        outfile.write('  {:d},\n'.format(byte))
+    outfile.write('};\n')
+    outfile.close()
+
+def testWaveFile(filename):
+    w = wave.Wave_read(filename)
+    bitrate = w.getframerate()
+    channels = w.getnchannels()
+    bits = w.getsampwidth()*8
+    if not bitrate==8000 or not channels==1 or not bits==16:
+        newFilename = filename[:-4] + "_8000.wav"
+        returnValue = os.system(SOXCOMMAND.format(filename, newFilename))    
+        if returnValue:
+            raise(SOX_Exception("Something went wrong calling sox: SOXCOMMAND.format(filename, newFilename"))
+        filename = newFilename
+    return(filename)
+    
+
+class SOX_Exception(Exception):
+    pass
+class UsageException(Exception):
+    pass
+
+if __name__ == "__main__":
+    
+    TWO_BIT_THRESHOLDS = [-0.05, 0, 0.05]
+    try:
+        filename = sys.argv[1]
+    except IndexError:
+        raise(UsageException("usage: python wave2DPCM.py wavefilename.wav"))
+
+    SOXCOMMAND = "sox {} -r 8000 -c 1 -b 16 {}" # for converting wave file
+    ## install sox, or use itunes or audacity to convert 
+    ## wavefile to 8kHz, 16-bit, one-channel
+   
+    filename = testWaveFile(filename)
+    packedData = packTwoBitDPCM(filename)
+    createHeader(filename, packedData)
+    
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/.gitignore b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/.gitignore
new file mode 100644
index 0000000..17d76a5
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/.gitignore	
@@ -0,0 +1,4 @@
+*8000.wav
+DPCM*.h
+muah.wav
+outtakes.wav
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/allDigits.h b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/allDigits.h
new file mode 100644
index 0000000..da176f5
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/allDigits.h	
@@ -0,0 +1,14923 @@
+const uint8_t DPCM_one_8000[] PROGMEM = {
+  153,
+  90,
+  106,
+  150,
+  105,
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+  89,
+  165,
+  86,
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+  150,
+  165,
+  150,
+  102,
+  149,
+  150,
+  101,
+  149,
+  165,
+  102,
+  169,
+  105,
+  105,
+  166,
+  90,
+  89,
+  102,
+  105,
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+  106,
+  165,
+  105,
+  149,
+  105,
+  102,
+  85,
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+  102,
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+  101,
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+  85,
+  105,
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+  150,
+  102,
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+  150,
+  169,
+  89,
+  90,
+  169,
+  90,
+  150,
+  153,
+  106,
+  86,
+  153,
+  166,
+  150,
+  165,
+  86,
+  150,
+  150,
+  154,
+  85,
+  85,
+  165,
+  154,
+  149,
+  106,
+  90,
+  85,
+  154,
+  90,
+  105,
+  105,
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+  105,
+  90,
+  165,
+  149,
+  166,
+  90,
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+  106,
+  149,
+  170,
+  149,
+  166,
+  169,
+  149,
+  165,
+  165,
+  170,
+  105,
+  102,
+  101,
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+  150,
+  154,
+  90,
+  105,
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+  102,
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+  90,
+  86,
+  150,
+  165,
+  170,
+  150,
+  105,
+  154,
+  89,
+  149,
+};
+const uint8_t DPCM_two_8000[] PROGMEM = {
+  153,
+  105,
+  154,
+  102,
+  101,
+  170,
+  86,
+  86,
+  105,
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+  105,
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+  90,
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+  101,
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+  90,
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+  153,
+  131,
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+  89,
+  94,
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+  115,
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+  217,
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+  53,
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+  227,
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+  41,
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+  99,
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+  30,
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+  25,
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+  54,
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+  135,
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+  35,
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+  48,
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+  125,
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+  19,
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+  121,
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+  15,
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+  53,
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+  198,
+  84,
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+  3,
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+  51,
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+  63,
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+  60,
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+  127,
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+  147,
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+  61,
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+  15,
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+  124,
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+  5,
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+  241,
+  228,
+  36,
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+  213,
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+  3,
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+  56,
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+  40,
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+  218,
+  133,
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+  12,
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+  43,
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+  21,
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+  185,
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+  1,
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+  62,
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+  116,
+  26,
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+  193,
+  208,
+  11,
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+  2,
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+  15,
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+  10,
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+  96,
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+  26,
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+  191,
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+  90,
+  85,
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+  85,
+  101,
+  86,
+  170,
+  89,
+  1,
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+  0,
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+  65,
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+  170,
+  165,
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+  85,
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+  0,
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+  86,
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+  85,
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+  86,
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+  85,
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+  85,
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+  106,
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+  106,
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+  86,
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+  90,
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+  150,
+  165,
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+  165,
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+  105,
+  85,
+  169,
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+  90,
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+  149,
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+  89,
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+  101,
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+  89,
+  105,
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+  85,
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+  105,
+  153,
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+  154,
+  106,
+  153,
+  85,
+  153,
+  106,
+  150,
+  89,
+  105,
+  154,
+  165,
+  165,
+  150,
+  105,
+  106,
+  150,
+  153,
+  90,
+  85,
+  106,
+  149,
+  86,
+  89,
+  102,
+  154,
+  85,
+  169,
+  105,
+  170,
+  85,
+  105,
+  102,
+  153,
+  153,
+  86,
+  153,
+  106,
+  90,
+  149,
+  165,
+};
+const uint8_t DPCM_three_8000[] PROGMEM = {
+  153,
+  149,
+  169,
+  89,
+  150,
+  89,
+  166,
+  102,
+  102,
+  165,
+  153,
+  102,
+  90,
+  90,
+  101,
+  154,
+  149,
+  166,
+  105,
+  106,
+  102,
+  154,
+  105,
+  150,
+  153,
+  102,
+  166,
+  149,
+  150,
+  150,
+  89,
+  166,
+  90,
+  149,
+  105,
+  90,
+  165,
+  105,
+  90,
+  89,
+  169,
+  90,
+  105,
+  170,
+  90,
+  86,
+  150,
+  150,
+  149,
+  149,
+  170,
+  101,
+  150,
+  89,
+  85,
+  165,
+  150,
+  169,
+  101,
+  165,
+  86,
+  150,
+  149,
+  106,
+  89,
+  106,
+  86,
+  89,
+  166,
+  90,
+  149,
+  105,
+  90,
+  166,
+  89,
+  165,
+  90,
+  105,
+  105,
+  166,
+  165,
+  166,
+  89,
+  105,
+  169,
+  150,
+  150,
+  90,
+  90,
+  85,
+  101,
+  169,
+  153,
+  86,
+  89,
+  102,
+  149,
+  154,
+  149,
+  149,
+  102,
+  165,
+  166,
+  86,
+  102,
+  165,
+  169,
+  149,
+  90,
+  106,
+  150,
+  102,
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+  101,
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+  166,
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+  165,
+  105,
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+  169,
+  102,
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+  98,
+  217,
+  89,
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+  153,
+  89,
+  150,
+  90,
+  102,
+  105,
+  105,
+  150,
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+  88,
+  101,
+  105,
+  154,
+  60,
+  182,
+  89,
+  166,
+  153,
+  153,
+  117,
+  102,
+  101,
+  165,
+  213,
+  153,
+  117,
+  170,
+  150,
+  138,
+  90,
+  41,
+  121,
+  166,
+  214,
+  102,
+  153,
+  153,
+  102,
+  105,
+  149,
+  170,
+  86,
+  89,
+  105,
+  113,
+  226,
+  214,
+  90,
+  89,
+  85,
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+  170,
+  170,
+  85,
+  85,
+  89,
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+  106,
+  96,
+  252,
+  62,
+  47,
+  129,
+  160,
+  104,
+  47,
+  155,
+  229,
+  101,
+  85,
+  149,
+  170,
+  169,
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+  166,
+  153,
+  101,
+};
+const uint8_t DPCM_six_8000[] PROGMEM = {
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+};
+const uint8_t DPCM_seven_8000[] PROGMEM = {
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+  150,
+  150,
+  154,
+  150,
+  154,
+  86,
+  149,
+  165,
+  106,
+  105,
+  149,
+  165,
+  166,
+  106,
+  86,
+  106,
+  89,
+  170,
+  90,
+  102,
+  154,
+  90,
+  89,
+  101,
+  90,
+  89,
+  150,
+  165,
+  105,
+  149,
+};
+const uint8_t DPCM_zero_8000[] PROGMEM = {
+  153,
+  153,
+  106,
+  89,
+  154,
+  101,
+  90,
+  105,
+  106,
+  89,
+  165,
+  101,
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+  101,
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+  102,
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+  106,
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+  90,
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+  90,
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+  166,
+  90,
+  106,
+  149,
+  169,
+  106,
+  150,
+  105,
+  105,
+  85,
+  101,
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+  154,
+  166,
+  90,
+  102,
+  106,
+  150,
+  149,
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+  100,
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+  79,
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+  226,
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+  61,
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+  48,
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+  188,
+  60,
+  28,
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+  96,
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+  60,
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+  56,
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+  112,
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+  21,
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+  20,
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+  101,
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+  6,
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+  5,
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+  85,
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+  0,
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+  6,
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+  69,
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+  149,
+  101,
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+  165,
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+  186,
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+  209,
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+  2,
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+  65,
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+  171,
+  229,
+  70,
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+  150,
+  153,
+  90,
+  165,
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+  7,
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+  16,
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+  21,
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+  27,
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+  6,
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+  27,
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+  1,
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+  90,
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+  165,
+  85,
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+  170,
+  166,
+  149,
+  86,
+  169,
+  90,
+  168,
+  6,
+  255,
+  164,
+  0,
+  107,
+  249,
+  85,
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+  170,
+  150,
+  85,
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+  169,
+  85,
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+  166,
+  170,
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+  106,
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+  85,
+  102,
+  128,
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+  250,
+  0,
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+  149,
+  90,
+  170,
+  86,
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+  106,
+  85,
+  90,
+  170,
+  85,
+  170,
+  165,
+  85,
+  170,
+  169,
+  86,
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+  101,
+  86,
+  169,
+  86,
+  169,
+  85,
+  106,
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+  86,
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+  85,
+  102,
+  170,
+  90,
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+  101,
+  86,
+  170,
+  165,
+  86,
+  170,
+  105,
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+  165,
+  90,
+  169,
+  85,
+  106,
+  149,
+  90,
+  169,
+  85,
+  106,
+  165,
+  85,
+  90,
+  165,
+  85,
+  170,
+  149,
+  106,
+  169,
+  85,
+  106,
+  170,
+  85,
+  106,
+  106,
+  153,
+  85,
+  170,
+  165,
+  86,
+  170,
+  165,
+  154,
+  170,
+  85,
+  85,
+  170,
+  149,
+  165,
+  169,
+  86,
+  106,
+  169,
+  86,
+  106,
+  149,
+  89,
+  169,
+  90,
+  165,
+  90,
+  169,
+  85,
+  154,
+  165,
+  85,
+  154,
+  169,
+  85,
+  106,
+  165,
+  89,
+  106,
+  165,
+  101,
+  170,
+  165,
+  86,
+  106,
+  165,
+  90,
+  153,
+  90,
+  170,
+  90,
+  105,
+  165,
+  90,
+  150,
+  85,
+  170,
+  149,
+  90,
+  169,
+  85,
+  166,
+  169,
+  85,
+  170,
+  149,
+  86,
+  90,
+  149,
+  89,
+  170,
+  105,
+  89,
+  149,
+  170,
+  166,
+  86,
+};
+const uint8_t DPCM_point_8000[] PROGMEM = {
+  153,
+  169,
+  90,
+  89,
+  154,
+  90,
+  149,
+  154,
+  102,
+  150,
+  165,
+  150,
+  149,
+  165,
+  89,
+  102,
+  153,
+  102,
+  149,
+  169,
+  105,
+  90,
+  90,
+  105,
+  90,
+  105,
+  102,
+  90,
+  86,
+  165,
+  90,
+  85,
+  150,
+  90,
+  89,
+  165,
+  90,
+  166,
+  101,
+  169,
+  150,
+  165,
+  102,
+  89,
+  90,
+  105,
+  101,
+  101,
+  154,
+  90,
+  86,
+  154,
+  105,
+  153,
+  90,
+  150,
+  149,
+  166,
+  89,
+  105,
+  150,
+  86,
+  149,
+  106,
+  90,
+  101,
+  169,
+  102,
+  90,
+  153,
+  89,
+  106,
+  86,
+  166,
+  90,
+  153,
+  101,
+  150,
+  150,
+  150,
+  153,
+  85,
+  166,
+  89,
+  170,
+  101,
+  150,
+  85,
+  170,
+  90,
+  86,
+  153,
+  105,
+  165,
+  101,
+  153,
+  105,
+  170,
+  106,
+  150,
+  89,
+  106,
+  154,
+  101,
+  150,
+  86,
+  166,
+  149,
+  105,
+  169,
+  106,
+  89,
+  85,
+  166,
+  106,
+  86,
+  105,
+  90,
+  89,
+  154,
+  90,
+  149,
+  61,
+  89,
+  120,
+  79,
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+  86,
+  170,
+  169,
+  139,
+  165,
+  170,
+  149,
+  105,
+  169,
+  166,
+  86,
+  170,
+  86,
+  166,
+  165,
+  106,
+  165,
+  150,
+  170,
+  149,
+  106,
+  86,
+  165,
+  105,
+  106,
+  149,
+  106,
+  101,
+  101,
+  165,
+  154,
+  153,
+  86,
+  170,
+  86,
+  106,
+  85,
+  102,
+  106,
+  150,
+  149,
+  166,
+  154,
+  149,
+  154,
+  149,
+  154,
+  90,
+  165,
+  90,
+  169,
+  149,
+  86,
+  106,
+  165,
+  90,
+  170,
+  153,
+  85,
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+};
+const uint8_t DPCM_volts_8000[] PROGMEM = {
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diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/eight.wav b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/eight.wav
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diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/volts.wav b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/volts.wav
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diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/wave2DPCM.py b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/wave2DPCM.py
new file mode 100644
index 0000000..f77df77
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/wave2DPCM.py	
@@ -0,0 +1,136 @@
+## Given a .wav audio file, downsamples it to 8000 Hz and writes it out
+##  as a ADPCM file suitable for use with AVRs.
+
+from struct import unpack
+import wave
+import os
+import sys
+
+def unpackMono(waveFile):
+    w = wave.Wave_read(waveFile)
+    data = []
+    for i in range(w.getnframes()):
+        data.append(unpack("h", w.readframes(1))[0])
+    return(data)
+
+def scaleData(data):
+    scale = max(max(data), abs(min(data))) * 1.0
+    return([x/scale for x in data])
+
+def getDifferences(data):
+    differences = []
+    for i in range(len(data)-1):
+        differences.append(data[i+1]-data[i])
+    return(differences)
+
+def quantize(data, thresholds):
+    quantized = []
+    n = len(thresholds)
+    thresholdRange = range(n)
+    for d in data:
+        categorized = False
+        for i in thresholdRange:
+            if d <= thresholds[i]:
+                quantized.append(i)
+                categorized = True
+                break
+        if not categorized:
+            quantized.append(n)
+    return(quantized)
+
+def pack4(data):                # for 2-bit data
+    packedData = []
+    for i in range(len(data) / 4):
+        thisByte = 0
+        thisByte += 2**6 * data[4*i]
+        thisByte += 2**4 * data[4*i+1]
+        thisByte += 2**2 * data[4*i+2]
+        thisByte += data[4*i+3]
+        packedData.append(thisByte)
+    return(packedData)
+
+def pack2(data):                # for 1-bit data
+    packedData = []
+    for i in range(len(data) / 8):
+        thisByte = 0
+        thisByte += 2**7 * data[8*i]
+        thisByte += 2**6 * data[8*i+1]
+        thisByte += 2**5 * data[8*i+2]
+        thisByte += 2**4 * data[8*i+3]
+        thisByte += 2**3 * data[8*i+4]
+        thisByte += 2**2 * data[8*i+5]
+        thisByte += 2**1 * data[8*i+6]
+        thisByte += data[8*i+7]
+        packedData.append(thisByte)   
+    return(packedData)
+
+
+def packOneBitDPCM(filename):
+    data = unpackMono(filename)
+    data = scaleData(data)
+    differences = getDifferences(data)
+    quantized = quantize(differences, [0])
+    packed = pack2(quantized)
+    return(packed)
+
+def packTwoBitDPCM(filename):
+    data = unpackMono(filename)
+    data = scaleData(data)
+    differences = getDifferences(data)
+    quantized = quantize(differences, TWO_BIT_THRESHOLDS)
+    packed = pack4(quantized)
+    return(packed)
+
+def createHeader(filename, packedData):
+    baseFilename = filename[:-4]
+    outfile = open("DPCM_" + baseFilename + ".h", "w")
+    outfile.write('uint8_t DPCM_{}[] PROGMEM = {{\n'.format(baseFilename))
+    for byte in packedData:
+        outfile.write('  {:d},\n'.format(byte))
+    outfile.write('};\n')
+    outfile.close()
+
+def testWaveFile(filename):
+    w = wave.Wave_read(filename)
+    bitrate = w.getframerate()
+    channels = w.getnchannels()
+    bits = w.getsampwidth()*8
+    if not bitrate==8000 or not channels==1 or not bits==16:
+        newFilename = filename[:-4] + "_8000.wav"
+        returnValue = os.system(SOXCOMMAND.format(filename, newFilename))    
+        if returnValue:
+            raise(SOX_Exception("Something went wrong calling sox: SOXCOMMAND.format(filename, newFilename"))
+        filename = newFilename
+    return(filename)
+    
+
+class SOX_Exception(Exception):
+    pass
+
+if __name__ == "__main__":
+
+    ## Default is to convert all wav files in the current directory.
+    
+    TWO_BIT_THRESHOLDS = [-0.05, 0, 0.05]
+    
+    SOXCOMMAND = "sox {} -r 8000 -c 1 -b 16 {}" # for converting wave file
+    ## install sox, or use itunes or audacity to convert 
+    ## wavefile to 8kHz, 16-bit, one-channel
+    
+    wavefiles = [x for x in os.walk(".").next()[2] if x.endswith(".wav")]
+    for filename in wavefiles:
+        
+        filename = testWaveFile(filename)
+        packedData = packTwoBitDPCM(filename)
+        createHeader(filename, packedData)
+    
+    ## And create a digits set:
+    digits = ["one", "two", "three", "four", "five", "six", 
+              "seven", "eight", "nine", "zero", "point", "volts"]
+    allDigits = open("allDigits.h", "w")
+    for digit in digits:
+        filename = "DPCM_" + digit + "_8000.h"
+        print filename
+        allDigits.write(open(filename).read())
+    allDigits.close()
+
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/zero.wav b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/elliot_speaking/zero.wav
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index 0000000..e4e59b2
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diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/rich_speaking/.gitignore b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/rich_speaking/.gitignore
new file mode 100644
index 0000000..96d2c0f
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/rich_speaking/.gitignore	
@@ -0,0 +1,2 @@
+*8000.wav
+DPCM*.h
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/rich_speaking/allDigits.h b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/rich_speaking/allDigits.h
new file mode 100644
index 0000000..ef773b1
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/rich_speaking/allDigits.h	
@@ -0,0 +1,15353 @@
+const uint8_t DPCM_talkingvoltmeter_8000[] PROGMEM = {127};
+const uint8_t DPCM_one_8000[] PROGMEM = {
+  102,
+  170,
+  165,
+  105,
+  165,
+  105,
+  150,
+  89,
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+};
+const uint8_t DPCM_two_8000[] PROGMEM = {
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+  86,
+  170,
+  170,
+  169,
+  85,
+  85,
+  106,
+  170,
+  170,
+  165,
+  85,
+  85,
+  86,
+  170,
+  170,
+  165,
+  85,
+  85,
+  170,
+  170,
+  170,
+  149,
+  85,
+  85,
+  90,
+  170,
+  170,
+  165,
+  85,
+  85,
+  86,
+  170,
+  170,
+  170,
+  85,
+  85,
+  85,
+  106,
+  170,
+  170,
+  169,
+  85,
+  85,
+  86,
+  170,
+  170,
+  170,
+  149,
+  85,
+  85,
+  85,
+  85,
+  106,
+  170,
+  170,
+  170,
+  85,
+  85,
+  85,
+  90,
+  170,
+  165,
+  85,
+  85,
+  106,
+  170,
+  170,
+  165,
+  85,
+  85,
+  86,
+  170,
+  170,
+  170,
+  85,
+  85,
+  85,
+  90,
+  170,
+  170,
+  169,
+  85,
+  85,
+  90,
+  170,
+  170,
+  169,
+  85,
+  85,
+  85,
+  106,
+  170,
+  170,
+  165,
+  85,
+  85,
+  86,
+  170,
+  170,
+  166,
+  85,
+  85,
+  86,
+  170,
+  165,
+  85,
+  86,
+  170,
+  170,
+  170,
+  149,
+  85,
+  85,
+  85,
+  165,
+  170,
+  170,
+  170,
+  170,
+  150,
+  85,
+  85,
+  90,
+  106,
+  170,
+  169,
+  101,
+  85,
+  85,
+  86,
+  170,
+  149,
+  90,
+  170,
+  170,
+  170,
+  149,
+  85,
+  85,
+  85,
+  170,
+  170,
+  90,
+  169,
+  85,
+  90,
+  169,
+  106,
+  170,
+  85,
+  101,
+  85,
+  86,
+  170,
+  85,
+  154,
+  85,
+  86,
+  170,
+  165,
+  154,
+  165,
+  90,
+  165,
+  85,
+  101,
+  85,
+  170,
+  170,
+  170,
+  170,
+  170,
+  170,
+  170,
+  170,
+  169,
+  85,
+  85,
+  85,
+  85,
+  170,
+  170,
+  85,
+  85,
+  90,
+  170,
+  170,
+  169,
+  85,
+  170,
+  169,
+  170,
+  85,
+  85,
+  90,
+  170,
+  169,
+  85,
+  85,
+  170,
+  170,
+  165,
+  85,
+  85,
+  86,
+  90,
+  90,
+  106,
+  170,
+  106,
+  169,
+  85,
+  105,
+  106,
+  165,
+  165,
+  85,
+  170,
+  165,
+  165,
+  149,
+  150,
+  150,
+  150,
+  150,
+  86,
+  169,
+  106,
+  89,
+  165,
+  90,
+  150,
+  154,
+  86,
+  149,
+  85,
+  101,
+  154,
+  169,
+  90,
+  86,
+  150,
+  169,
+  106,
+  105,
+  85,
+  86,
+  101,
+  166,
+  165,
+  169,
+  85,
+  150,
+  150,
+  166,
+  149,
+  90,
+  89,
+  165,
+  86,
+  89,
+  106,
+  170,
+  150,
+  105,
+  105,
+  101,
+  165,
+  149,
+  90,
+  90,
+  89,
+  101,
+  102,
+  105,
+  101,
+  149,
+  105,
+  105,
+  85,
+  165,
+  90,
+  170,
+  165,
+  154,
+  150,
+  105,
+  105,
+  105,
+  165,
+  106,
+  154,
+  150,
+  150,
+  150,
+  86,
+  170,
+  105,
+  105,
+  170,
+  90,
+  149,
+  89,
+  106,
+  85,
+  101,
+  90,
+  166,
+  86,
+  166,
+  85,
+  149,
+  89,
+  86,
+  101,
+};
+const uint8_t DPCM_three_8000[] PROGMEM = {
+  102,
+  170,
+  165,
+  105,
+  166,
+  105,
+  150,
+  89,
+  105,
+  150,
+  101,
+  102,
+  153,
+  150,
+  106,
+  154,
+  102,
+  101,
+  165,
+  153,
+  165,
+  106,
+  101,
+  154,
+  89,
+  89,
+  150,
+  101,
+  165,
+  86,
+  169,
+  89,
+  166,
+  154,
+  101,
+  153,
+  86,
+  105,
+  102,
+  101,
+  150,
+  85,
+  85,
+  89,
+  85,
+  106,
+  89,
+  105,
+  150,
+  106,
+  89,
+  105,
+  154,
+  105,
+  90,
+  165,
+  166,
+  86,
+  150,
+  86,
+  166,
+  90,
+  90,
+  166,
+  149,
+  106,
+  150,
+  153,
+  101,
+  85,
+  86,
+  85,
+  149,
+  149,
+  85,
+  105,
+  101,
+  89,
+  102,
+  149,
+  150,
+  166,
+  90,
+  166,
+  154,
+  85,
+  170,
+  89,
+  102,
+  89,
+  150,
+  105,
+  86,
+  150,
+  165,
+  170,
+  165,
+  150,
+  154,
+  89,
+  169,
+  106,
+  89,
+  150,
+  169,
+  149,
+  89,
+  101,
+  166,
+  85,
+  169,
+  153,
+  89,
+  86,
+  102,
+  90,
+  166,
+  86,
+  169,
+  153,
+  149,
+  86,
+  90,
+  169,
+  86,
+  105,
+  85,
+  150,
+  106,
+  89,
+  101,
+  86,
+  165,
+  154,
+  89,
+  106,
+  89,
+  150,
+  102,
+  105,
+  106,
+  101,
+  85,
+  101,
+  153,
+  154,
+  106,
+  89,
+  166,
+  105,
+  150,
+  89,
+  90,
+  89,
+  101,
+  149,
+  165,
+  166,
+  89,
+  106,
+  85,
+  169,
+  106,
+  90,
+  165,
+  101,
+  153,
+  165,
+  105,
+  170,
+  149,
+  102,
+  149,
+  90,
+  154,
+  166,
+  150,
+  165,
+  154,
+  90,
+  153,
+  169,
+  165,
+  153,
+  89,
+  149,
+  106,
+  165,
+  153,
+  101,
+  153,
+  105,
+  85,
+  85,
+  102,
+  101,
+  101,
+  150,
+  86,
+  166,
+  101,
+  90,
+  165,
+  89,
+  85,
+  153,
+  90,
+  170,
+  102,
+  105,
+  120,
+  102,
+  153,
+  150,
+  86,
+  106,
+  90,
+  86,
+  149,
+  149,
+  101,
+  105,
+  105,
+  170,
+  106,
+  153,
+  165,
+  106,
+  86,
+  165,
+  106,
+  90,
+  106,
+  169,
+  149,
+  86,
+  150,
+  90,
+  166,
+  101,
+  149,
+  165,
+  90,
+  150,
+  169,
+  90,
+  150,
+  106,
+  85,
+  85,
+  85,
+  85,
+  150,
+  170,
+  170,
+  234,
+  170,
+  149,
+  86,
+  150,
+  186,
+  150,
+  149,
+  85,
+  100,
+  86,
+  69,
+  89,
+  47,
+  170,
+  190,
+  85,
+  85,
+  26,
+  169,
+  106,
+  154,
+  169,
+  150,
+  150,
+  86,
+  85,
+  85,
+  165,
+  85,
+  86,
+  234,
+  170,
+  165,
+  106,
+  85,
+  90,
+  150,
+  169,
+  91,
+  229,
+  165,
+  164,
+  85,
+  69,
+  85,
+  21,
+  91,
+  230,
+  251,
+  145,
+  85,
+  21,
+  170,
+  154,
+  169,
+  91,
+  209,
+  154,
+  144,
+  97,
+  129,
+  85,
+  69,
+  254,
+  127,
+  249,
+  2,
+  144,
+  91,
+  249,
+  170,
+  165,
+  126,
+  22,
+  169,
+  1,
+  80,
+  17,
+  20,
+  127,
+  219,
+  254,
+  64,
+  100,
+  6,
+  255,
+  155,
+  229,
+  91,
+  149,
+  106,
+  144,
+  20,
+  16,
+  21,
+  127,
+  159,
+  254,
+  64,
+  100,
+  6,
+  255,
+  155,
+  229,
+  110,
+  84,
+  106,
+  64,
+  80,
+  0,
+  22,
+  254,
+  191,
+  228,
+  2,
+  128,
+  111,
+  250,
+  191,
+  70,
+  244,
+  6,
+  164,
+  10,
+  0,
+  1,
+  111,
+  235,
+  254,
+  64,
+  96,
+  10,
+  255,
+  191,
+  213,
+  189,
+  2,
+  229,
+  6,
+  64,
+  0,
+  15,
+  247,
+  255,
+  64,
+  96,
+  6,
+  250,
+  255,
+  85,
+  188,
+  11,
+  149,
+  26,
+  0,
+  64,
+  31,
+  199,
+  254,
+  2,
+  128,
+  107,
+  219,
+  248,
+  190,
+  128,
+  164,
+  42,
+  144,
+  64,
+  1,
+  127,
+  63,
+  249,
+  4,
+  5,
+  10,
+  191,
+  239,
+  153,
+  20,
+  26,
+  90,
+  84,
+  4,
+  1,
+  252,
+  255,
+  154,
+  64,
+  112,
+  47,
+  255,
+  245,
+  244,
+  5,
+  66,
+  149,
+  64,
+  0,
+  79,
+  207,
+  251,
+  212,
+  8,
+  11,
+  239,
+  253,
+  189,
+  25,
+  1,
+  160,
+  164,
+  4,
+  2,
+  242,
+  249,
+  249,
+  2,
+  3,
+  199,
+  254,
+  191,
+  15,
+  1,
+  80,
+  96,
+  20,
+  5,
+  241,
+  252,
+  248,
+  1,
+  3,
+  135,
+  255,
+  255,
+  94,
+  5,
+  0,
+  80,
+  16,
+  21,
+  242,
+  245,
+  244,
+  0,
+  6,
+  15,
+  175,
+  255,
+  105,
+  20,
+  0,
+  64,
+  0,
+  91,
+  207,
+  203,
+  193,
+  64,
+  16,
+  185,
+  255,
+  253,
+  180,
+  20,
+  4,
+  4,
+  21,
+  126,
+  126,
+  125,
+  20,
+  0,
+  6,
+  159,
+  255,
+  175,
+  89,
+  0,
+  1,
+  1,
+  71,
+  235,
+  251,
+  230,
+  128,
+  0,
+  86,
+  251,
+  251,
+  214,
+  128,
+  0,
+  0,
+  81,
+  175,
+  190,
+  189,
+  164,
+  0,
+  5,
+  110,
+  255,
+  246,
+  209,
+  64,
+  0,
+  16,
+  151,
+  239,
+  239,
+  169,
+  64,
+  1,
+  70,
+  251,
+  247,
+  214,
+  64,
+  0,
+  1,
+  91,
+  239,
+  239,
+  169,
+  65,
+  1,
+  27,
+  159,
+  175,
+  89,
+  0,
+  0,
+  5,
+  110,
+  255,
+  254,
+  165,
+  84,
+  20,
+  121,
+  250,
+  246,
+  144,
+  64,
+  0,
+  86,
+  239,
+  255,
+  250,
+  149,
+  65,
+  90,
+  126,
+  189,
+  164,
+  80,
+  16,
+  21,
+  171,
+  255,
+  234,
+  149,
+  85,
+  90,
+  110,
+  125,
+  165,
+  80,
+  0,
+  86,
+  171,
+  255,
+  234,
+  149,
+  85,
+  90,
+  109,
+  185,
+  165,
+  80,
+  0,
+  86,
+  171,
+  255,
+  170,
+  149,
+  85,
+  105,
+  170,
+  170,
+  85,
+  65,
+  85,
+  90,
+  171,
+  250,
+  170,
+  85,
+  85,
+  166,
+  166,
+  150,
+  85,
+  85,
+  85,
+  106,
+  174,
+  170,
+  169,
+  85,
+  86,
+  106,
+  170,
+  85,
+  85,
+  85,
+  90,
+  170,
+  170,
+  170,
+  165,
+  85,
+  90,
+  170,
+  169,
+  85,
+  85,
+  85,
+  106,
+  170,
+  170,
+  170,
+  150,
+  86,
+  89,
+  85,
+  85,
+  85,
+  86,
+  170,
+  170,
+  170,
+  169,
+  85,
+  89,
+  105,
+  149,
+  85,
+  85,
+  86,
+  170,
+  170,
+  170,
+  170,
+  169,
+  85,
+  85,
+  85,
+  85,
+  85,
+  170,
+  170,
+  170,
+  170,
+  166,
+  149,
+  85,
+  85,
+  85,
+  85,
+  90,
+  170,
+  170,
+  170,
+  170,
+  85,
+  85,
+  85,
+  85,
+  85,
+  86,
+  170,
+  170,
+  170,
+  170,
+  85,
+  85,
+  85,
+  85,
+  85,
+  85,
+  170,
+  170,
+  170,
+  170,
+  149,
+  85,
+  85,
+  85,
+  85,
+  85,
+  170,
+  170,
+  170,
+  169,
+  149,
+  85,
+  85,
+  85,
+  85,
+  170,
+  170,
+  170,
+  170,
+  150,
+  85,
+  85,
+  85,
+  85,
+  90,
+  170,
+  170,
+  169,
+  165,
+  86,
+  150,
+  85,
+  85,
+  85,
+  154,
+  170,
+  170,
+  170,
+  85,
+  89,
+  85,
+  85,
+  154,
+  90,
+  106,
+  170,
+  170,
+  85,
+  85,
+  86,
+  85,
+  165,
+  166,
+  150,
+  90,
+  166,
+  166,
+  150,
+  89,
+  85,
+  166,
+  166,
+  150,
+  169,
+  101,
+  166,
+  150,
+  90,
+  105,
+  166,
+  90,
+  105,
+  101,
+  150,
+  149,
+  105,
+  102,
+  86,
+  149,
+  150,
+  154,
+  90,
+  90,
+  150,
+  150,
+  90,
+  90,
+  150,
+  150,
+  169,
+  165,
+  165,
+  85,
+  105,
+  105,
+  105,
+  90,
+  90,
+  90,
+  86,
+  150,
+  90,
+  90,
+  150,
+  150,
+  150,
+  150,
+  150,
+  149,
+  165,
+  165,
+  170,
+  90,
+  101,
+  165,
+  170,
+  90,
+  90,
+  150,
+  165,
+  165,
+  169,
+  90,
+  105,
+  90,
+  154,
+  149,
+  166,
+  165,
+  170,
+  150,
+  165,
+  105,
+  105,
+  90,
+  90,
+  102,
+  150,
+  150,
+  149,
+  169,
+  101,
+  165,
+  86,
+  165,
+  102,
+  90,
+  90,
+  90,
+  149,
+  166,
+  86,
+  154,
+  85,
+  165,
+  165,
+  169,
+  105,
+  90,
+  86,
+  150,
+  149,
+  105,
+  105,
+  106,
+  153,
+  85,
+  165,
+  106,
+  154,
+  90,
+  165,
+  106,
+  165,
+  86,
+  150,
+  105,
+  101,
+  170,
+  85,
+  149,
+  90,
+  89,
+  85,
+  86,
+  154,
+  85,
+  101,
+  154,
+  154,
+  169,
+  102,
+  150,
+  150,
+  106,
+  89,
+  101,
+  165,
+  165,
+  150,
+  86,
+  102,
+  150,
+  89,
+  86,
+  150,
+  149,
+  90,
+  85,
+  170,
+  170,
+  89,
+  169,
+  166,
+  150,
+  150,
+  154,
+  86,
+  169,
+  169,
+  105,
+  105,
+  101,
+  106,
+  166,
+};
+const uint8_t DPCM_four_8000[] PROGMEM = {
+  102,
+  170,
+  165,
+  105,
+  165,
+  105,
+  150,
+  89,
+  101,
+  154,
+  101,
+  102,
+  153,
+  150,
+  106,
+  154,
+  102,
+  102,
+  165,
+  153,
+  165,
+  106,
+  101,
+  154,
+  105,
+  89,
+  154,
+  85,
+  165,
+  86,
+  169,
+  153,
+  166,
+  154,
+  166,
+  165,
+  85,
+  105,
+  86,
+  85,
+  154,
+  85,
+  149,
+  89,
+  101,
+  106,
+  89,
+  106,
+  150,
+  102,
+  89,
+  105,
+  170,
+  105,
+  90,
+  165,
+  166,
+  90,
+  150,
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+};
+const uint8_t DPCM_five_8000[] PROGMEM = {
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+  150,
+  90,
+  90,
+  89,
+  101,
+  102,
+  105,
+  101,
+  149,
+  105,
+  105,
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+  101,
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+  165,
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+  150,
+  105,
+  105,
+  105,
+  165,
+  106,
+  154,
+  150,
+  150,
+  150,
+  86,
+  170,
+  105,
+  105,
+  170,
+  106,
+  85,
+  89,
+};
+const uint8_t DPCM_eight_8000[] PROGMEM = {
+  102,
+  170,
+  165,
+  105,
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+  105,
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+  89,
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+  149,
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+  89,
+  169,
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+  150,
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+  169,
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+  166,
+  169,
+  85,
+  150,
+  165,
+  86,
+  85,
+  170,
+  165,
+  106,
+  101,
+  89,
+  85,
+  150,
+};
+const uint8_t DPCM_nine_8000[] PROGMEM = {
+  102,
+  170,
+  165,
+  105,
+  149,
+  105,
+  150,
+  89,
+  101,
+  154,
+  101,
+  102,
+  153,
+  150,
+  166,
+  154,
+  102,
+  101,
+  165,
+  153,
+  165,
+  106,
+  101,
+  154,
+  105,
+  85,
+  154,
+  85,
+  165,
+  86,
+  169,
+  89,
+  166,
+  150,
+  149,
+  165,
+  85,
+  106,
+  102,
+  101,
+  150,
+  85,
+  85,
+  89,
+  101,
+  106,
+  89,
+  106,
+  150,
+  102,
+  105,
+  105,
+  154,
+  105,
+  90,
+  165,
+  166,
+  86,
+  150,
+  86,
+  170,
+  90,
+  90,
+  166,
+  153,
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+  150,
+  153,
+  101,
+  85,
+  86,
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+  149,
+  85,
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+  102,
+  89,
+  102,
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+  85,
+  85,
+  86,
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+  85,
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+  170,
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+  89,
+  85,
+  85,
+  85,
+  86,
+  171,
+  255,
+  174,
+  165,
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+};
+const uint8_t DPCM_zero_8000[] PROGMEM = {
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+};
+const uint8_t DPCM_point_8000[] PROGMEM = {
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+};
+const uint8_t DPCM_volts_8000[] PROGMEM = {
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diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/talkingVoltmeter.c b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/talkingVoltmeter.c
new file mode 100644
index 0000000..f1f82e6
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/talkingVoltmeter.c	
@@ -0,0 +1,125 @@
+//  Talking Voltmeter Example
+
+#include <inttypes.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include <avr/pgmspace.h>
+#include <avr/power.h>
+#include "pinDefines.h"
+#include "USART.h"
+
+#include "talkingVoltmeter.h"
+
+void startSampleTimer(void) {
+  sampleNumber = 0;                   /* back to start of sample table */
+  TCCR2B = (1 << CS21);                         /* turn on timer clock */
+                /* Two clock options above end up ~8kHz on 8MHz system */
+}
+void stopSampleTimer(void) {
+  TCCR2B = 0;                         /* disable sample-playback clock */
+  OCR0A = 128;                              /* idle PWM at mid-voltage */
+  lastout = 0;                                 /* start at 0 next time */
+}
+void speak(void) {
+  startSampleTimer();
+  loop_until_bit_is_clear(TCCR2B, CS21);            /* Wait until done */
+}
+
+void updatePWMAudio(void) {
+  OCR0A = out + 128;                        /* re-center for 0-255 PWM */
+  lastout = out;                                  /* update last value */
+  sampleNumber++;                                 /* on to next sample */
+}
+void unpackByte(uint8_t dataByte) {
+                           /* Select pairs of bits from byte, save out */
+  differentials[0] = (dataByte >> 6) & 0b00000011;
+  differentials[1] = (dataByte >> 4) & 0b00000011;
+  differentials[2] = (dataByte >> 2) & 0b00000011;
+  differentials[3] = (dataByte & 0b00000011);
+}
+
+/* Timer 2 controls sampling speed.
+   ISR reads new data, loads PWM values into OCR0A */
+ISR(TIMER2_COMPA_vect) {
+  /* Since we can decode 4 2-bit values at once, need to know where
+     we are in the 4-step mini-cycle. */
+  uint8_t cycle = sampleNumber & 0b00000011;       /* keep last 2 bits */
+  uint16_t tableEntry;
+  uint8_t packedData;
+
+  if (cycle == 0) {                        /* at first sample, re-load */
+    tableEntry = sampleNumber >> 2;           /* where we are in table */
+    if (tableEntry < thisTableLength) {
+                         /* read the next byte from the selected table */
+      packedData = pgm_read_byte(&thisTableP[tableEntry]);
+      unpackByte(packedData);    /* split up byte into differentials[] */
+    }
+    else {                                   /* at end of table, done. */
+      stopSampleTimer();
+    }
+  }
+          /* Decode the differences: current value = last + difference */
+  out = lastout + dpcmWeights[differentials[cycle]] - (lastout >> 4);
+  updatePWMAudio();
+}                               // end  ISR (TIMER2_COMPA_vect)
+
+void printString_Progmem(const char *stringP) {
+  char oneLetter;
+  while ((oneLetter = pgm_read_byte(stringP))) {
+    transmitByte(oneLetter);
+    stringP++;
+  }
+}
+
+
+int main(void) {
+  uint16_t voltage;
+  uint8_t volts;
+  uint8_t tenths;
+  uint8_t vcc = 51;                               /* 10x VCC, in volts */
+
+  clock_prescale_set(clock_div_1);                            /* 8 MHz */
+  initTimer0();
+  initTimer2();
+  sei();                                             /* for timer2 ISR */
+  initADC();
+  initUSART();
+
+  printString_Progmem(PSTR("\r\n--=( Talking Voltmeter )=--\r\n"));
+
+  selectTable(INTRO);
+  speak();
+
+  while (1) {
+
+    ADCSRA |= (1 << ADSC);                                /* start ADC */
+    loop_until_bit_is_clear(ADCSRA, ADSC);
+
+    voltage = ADC * vcc + vcc / 2;      /* vcc/2 to make rounding work */
+    voltage = voltage >> 10;              /* divide by 10-bits for ADC */
+                   /* "voltage" is now actually 10x real-world voltage */
+    volts = voltage / 10;
+    tenths = voltage % 10;
+
+    transmitByte('0' + volts);                /* serial output as well */
+    selectTable(volts);                 /* 0 points to ZERO_TABLE, etc */
+    speak();
+
+    transmitByte('.');
+    selectTable(POINT);
+    speak();
+
+    transmitByte('0' + tenths);
+    selectTable(tenths);
+    speak();
+
+    printString_Progmem(PSTR("  volts\r\n"));
+    selectTable(VOLTS);
+    speak();
+
+    _delay_ms(SPEECH_DELAY);
+
+  }                                                       /* end while */
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/talkingVoltmeter.h b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/talkingVoltmeter.h
new file mode 100644
index 0000000..6014a3f
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/talkingVoltmeter.h	
@@ -0,0 +1,91 @@
+/* Include file with DPCM data in it */
+#include "allDigits.h"
+#include <avr/pgmspace.h>
+
+// Now define sample-table names used in digits file 
+// From here on, no matter what you call the samples,
+//   you can refer to them as "ONE_TABLE", etc.  
+#define ONE_TABLE    DPCM_one_8000
+#define TWO_TABLE    DPCM_two_8000
+#define THREE_TABLE  DPCM_three_8000
+#define FOUR_TABLE   DPCM_four_8000
+#define FIVE_TABLE   DPCM_five_8000
+#define SIX_TABLE    DPCM_six_8000
+#define SEVEN_TABLE  DPCM_seven_8000
+#define EIGHT_TABLE  DPCM_eight_8000
+#define NINE_TABLE   DPCM_nine_8000
+#define ZERO_TABLE   DPCM_zero_8000
+#define POINT_TABLE  DPCM_point_8000
+#define VOLTS_TABLE  DPCM_volts_8000
+#define INTRO_TABLE  DPCM_talkingvoltmeter_8000
+
+#define SPEECH_DELAY   2000   /* milliseconds */
+
+/* --------------- Globals used by the ISR -------------- */
+volatile uint8_t* thisTableP; /* points at the current speech table */
+volatile uint16_t thisTableLength; /* length of current speech table */
+
+volatile uint16_t sampleNumber;         // sample index
+volatile int8_t   out, lastout;		// output values
+volatile uint8_t  differentials[4] = {0,0,0,0};	 
+const    int8_t   dpcmWeights[4]   = {-12, -3, 3, 12};
+
+
+/* These arrays let us choose a table (and its length) numerically */
+const uint16_t tableLengths[]  = {	/* all sample tables are 8-bit */
+  sizeof(ZERO_TABLE), sizeof(ONE_TABLE), sizeof(TWO_TABLE), 
+  sizeof(THREE_TABLE), sizeof(FOUR_TABLE), sizeof(FIVE_TABLE),
+  sizeof(SIX_TABLE), sizeof(SEVEN_TABLE), sizeof(EIGHT_TABLE), 
+  sizeof(NINE_TABLE), sizeof(POINT_TABLE), sizeof(VOLTS_TABLE), 
+  sizeof(INTRO_TABLE)
+};
+
+// Create an indexing table of all of the start addresses for
+// each spoken digit.  And then store this index in PROGMEM.
+const uint8_t* const tablePointers[] PROGMEM = { 
+  ZERO_TABLE, ONE_TABLE, TWO_TABLE, THREE_TABLE, FOUR_TABLE, 
+  FIVE_TABLE, SIX_TABLE, SEVEN_TABLE, EIGHT_TABLE, NINE_TABLE, 
+  POINT_TABLE, VOLTS_TABLE, INTRO_TABLE
+};
+
+void selectTable(uint8_t whichTable){
+  /* Set up global table pointer, lengths */
+  uint16_t pointerAddress;
+  thisTableLength = tableLengths[whichTable];
+  pointerAddress = (uint16_t) &tablePointers[whichTable];
+  thisTableP =  (uint8_t*) pgm_read_word(pointerAddress);
+}
+
+/* Extra defines for the non-numeric values */
+#define   POINT  10
+#define   VOLTS  11 
+#define   INTRO  12
+
+
+///-----------------   Init functions  -------------------///
+
+void initTimer0(void){
+  // Timer 0 Configured for free-running PWM Audio Output
+  TCCR0A |= (1<<WGM00) | (1<<WGM01); /* fast PWM mode */
+  TCCR0A |= (1<<COM0A0) | (1<<COM0A1); /* output on PD6/OC0A */
+  TCCR0B = (1<<CS00);		       /* fastest clock */
+  OCR0A = 128 ;			       /* initialize mid-value */
+  SPEAKER_DDR |= (1<<SPEAKER);	       /* output PD6 / OC0A */
+}
+
+void initTimer2(void){
+  // Timer 2 loads OCR0A, provides sampling frequency
+  TCCR2A = (1<<WGM21);	      /* CTC, count to OCR2A */
+  TIMSK2 = (1<<OCIE2A);	      /* turn on compare interrupt */
+  OCR2A = 128;	    /* controls sample playback frequency */
+  /* note: no clock source selected yet, so won't start up  */
+}
+
+void initADC(void){
+  // ADC for Voltmeter function
+  ADMUX  |= (0b00001111 & PC5);  /* set mux to ADC5 */
+  DIDR0 |= _BV(ADC5D);		 /* turn off digital circuitry on PC5 */
+  ADMUX  |= (1 << REFS0);        /* reference voltage is AVCC, 5V */
+  ADCSRA |= (1 << ADPS1) | (1 << ADPS2); /* ADC clock prescaler /64 */
+  ADCSRA |= (1 << ADEN);        /* enable ADC */
+}
diff --git a/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/wave2DPCM.py b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/wave2DPCM.py
new file mode 100644
index 0000000..0dca4a3
--- /dev/null
+++ b/Make AVR Examples/Chapter18_Using-Flash-Program-Memory/talkingVoltmeter/wave2DPCM.py	
@@ -0,0 +1,119 @@
+## Functions to convert mono, 8kHz .wav files to differential PCM
+
+## If you've got 'sox' installed on your computer, this code calls
+##  'sox' and re-codes the files for you.  If not, you've got to do it.
+
+## Finally, given a bunch of wav files with names like one.wav, two.wav
+##  this writes the DPCM data out to a header file for including in AVR C
+
+from struct import unpack
+import wave
+import os
+import sys
+
+def unpackMono(waveFile):
+    w = wave.Wave_read(waveFile)
+    data = []
+    for i in range(w.getnframes()):
+        data.append(unpack("h", w.readframes(1))[0])
+    return(data)
+
+def scaleData(data):
+    scale = max(max(data), abs(min(data))) * 1.0
+    return([x/scale for x in data])
+
+def getDifferences(data):
+    differences = []
+    for i in range(len(data)-1):
+        differences.append(data[i+1]-data[i])
+    return(differences)
+
+def quantize(data, thresholds):
+    quantized = []
+    n = len(thresholds)
+    thresholdRange = range(n)
+    for d in data:
+        categorized = False
+        for i in thresholdRange:
+            if d <= thresholds[i]:
+                quantized.append(i)
+                categorized = True
+                break
+        if not categorized:
+            quantized.append(n)
+    return(quantized)
+
+def pack4(data):                # for 2-bit data
+    packedData = []
+    for i in range(len(data) / 4):
+        thisByte = 0
+        thisByte += 2**6 * data[4*i]
+        thisByte += 2**4 * data[4*i+1]
+        thisByte += 2**2 * data[4*i+2]
+        thisByte += data[4*i+3]
+        packedData.append(thisByte)
+    return(packedData)
+
+def packTwoBitDPCM(filename):
+    data = unpackMono(filename)
+    data = scaleData(data)
+    differences = getDifferences(data)
+    quantized = quantize(differences, TWO_BIT_THRESHOLDS)
+    packed = pack4(quantized)
+    return(packed)
+
+def createHeader(filename, packedData):
+    baseFilename = filename[:-4]
+    outfile = open("DPCM_" + baseFilename + ".h", "w")
+    outfile.write('const uint8_t DPCM_{}[] PROGMEM = {{\n'.format(baseFilename))
+    for byte in packedData:
+        outfile.write('  {:d},\n'.format(byte))
+    outfile.write('};\n')
+    outfile.close()
+
+def fixWaveFile(filename):
+    w = wave.Wave_read(filename)
+    bitrate = w.getframerate()
+    channels = w.getnchannels()
+    bits = w.getsampwidth()*8
+    if not bitrate==8000 or not channels==1 or not bits==16:
+        newFilename = filename[:-4] + "_8000.wav"
+        returnValue = os.system(SOXCOMMAND.format(filename, newFilename))    
+        if returnValue:
+            raise(SOX_Exception("""Something went wrong calling sox: 
+SOXCOMMAND.format(filename, newFilename
+Is sox installed?  If not, just make sure that you've saved 8kHz mono wav files."""))
+        filename = newFilename
+    return(filename)
+    
+
+class SOX_Exception(Exception):
+    pass
+
+if __name__ == "__main__":
+
+    ## Default is to convert all wav files in the current directory.
+    
+    TWO_BIT_THRESHOLDS = [-0.05, 0, 0.05]
+    
+    SOXCOMMAND = "sox {} -r 8000 -c 1 -b 16 {}" # for converting wave file
+    ## install sox, or use itunes or audacity to convert 
+    ## wavefile to 8kHz, 16-bit, one-channel
+    
+    wavefiles = [x for x in os.walk(".").next()[2] if x.endswith(".wav")]
+    for filename in wavefiles:        
+        filename = fixWaveFile(filename) # converts if needed, returns new filename
+        packedData = packTwoBitDPCM(filename)
+        createHeader(filename, packedData)
+    
+    ## And create a digits sample set for talkingVoltmeter.h:
+    digits = ["one", "two", "three", "four", "five", "six", 
+              "seven", "eight", "nine", "zero", 
+              "point", "volts", "talkingvoltmeter"]
+    allDigits = open("allDigits.h", "w")
+    for digit in digits:
+        filename = "DPCM_" + digit + "_8000.h"
+        print filename
+        allDigits.write(open(filename).read())
+    allDigits.close()
+
diff --git a/Make AVR Examples/Chapter19_EEPROM/eememDemo/.gitignore b/Make AVR Examples/Chapter19_EEPROM/eememDemo/.gitignore
new file mode 100644
index 0000000..c286bce
--- /dev/null
+++ b/Make AVR Examples/Chapter19_EEPROM/eememDemo/.gitignore	
@@ -0,0 +1,3 @@
+*.eeprom
+*.raw
+
diff --git a/Make AVR Examples/Chapter19_EEPROM/eememDemo/Makefile b/Make AVR Examples/Chapter19_EEPROM/eememDemo/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter19_EEPROM/eememDemo/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter19_EEPROM/eememDemo/eememDemo.c b/Make AVR Examples/Chapter19_EEPROM/eememDemo/eememDemo.c
new file mode 100644
index 0000000..df219d1
--- /dev/null
+++ b/Make AVR Examples/Chapter19_EEPROM/eememDemo/eememDemo.c	
@@ -0,0 +1,39 @@
+#include <avr/io.h>
+#include <avr/eeprom.h>
+#include <USART.h>
+/* #include <stdio.h> */
+/* #include <stdlib.h> */
+
+#define STRING_LEN   80
+
+// Define EEMEM variables
+uint8_t eepromCounter EEMEM = 0;
+char eepromString[STRING_LEN] EEMEM = "Welcome to the EEMEM Demo.\r\n";
+uint16_t eepromWord EEMEM = 12345;
+
+int main(void) {
+
+  initUSART();
+  char ramString[STRING_LEN];
+  uint8_t counter;
+
+  while (1) {
+    printString("\r\n------------------\r\n");
+    eeprom_read_block(ramString, eepromString, STRING_LEN);
+    printString(ramString);
+
+    printString("\r\nThe counter reads: ");
+    counter = eeprom_read_byte(&eepromCounter);
+    printByte(counter);
+
+    printString("\r\nMy uint16_t value is: ");
+    printWord(eeprom_read_word(&eepromWord));
+
+    printString("\r\n   Enter a new introduction string below:\r\n");
+    readString(ramString, STRING_LEN);
+    eeprom_update_block(ramString, eepromString, STRING_LEN);
+    counter++;
+    eeprom_update_byte(&eepromCounter, counter);
+  }
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter19_EEPROM/favoriteColor/.gitignore b/Make AVR Examples/Chapter19_EEPROM/favoriteColor/.gitignore
new file mode 100644
index 0000000..c286bce
--- /dev/null
+++ b/Make AVR Examples/Chapter19_EEPROM/favoriteColor/.gitignore	
@@ -0,0 +1,3 @@
+*.eeprom
+*.raw
+
diff --git a/Make AVR Examples/Chapter19_EEPROM/favoriteColor/Makefile b/Make AVR Examples/Chapter19_EEPROM/favoriteColor/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter19_EEPROM/favoriteColor/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter19_EEPROM/favoriteColor/favoriteColor.c b/Make AVR Examples/Chapter19_EEPROM/favoriteColor/favoriteColor.c
new file mode 100644
index 0000000..53032f7
--- /dev/null
+++ b/Make AVR Examples/Chapter19_EEPROM/favoriteColor/favoriteColor.c	
@@ -0,0 +1,38 @@
+#include <avr/io.h>
+#include <avr/eeprom.h>
+#include <USART.h>
+
+#define STRING_MAXLEN         0x20                    /* 32 characters */
+#define STRING_ADDRESS        0x20
+#define COUNTER_ADDRESS       0x10
+
+
+int main(void) {
+
+  char myString[STRING_MAXLEN];
+  char *eepromAddress = (char *) STRING_ADDRESS;
+  uint16_t counter;
+
+  initUSART();
+
+  while (1) {
+    // Read from EEPROM and print out
+    eeprom_read_block(myString, eepromAddress, STRING_MAXLEN);
+    counter = eeprom_read_word((uint16_t *) COUNTER_ADDRESS);
+    printString("\r\nYour old favorite color is: ");
+    printString(myString);
+
+    // Take input, store in EEPROM
+    printString("\r\n\r\n Type your new favorite color.  ");
+    readString(myString, sizeof(myString));
+                   /* pass by address, function will change its values */
+    eeprom_update_block(myString, eepromAddress, STRING_MAXLEN);
+    counter++;
+    printString("Thanks! \r\nYou've answered the same question ");
+    printWord(counter);
+    printString(" times.  \r\n");
+    eeprom_update_word((uint16_t *) COUNTER_ADDRESS, counter);
+  }
+
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter19_EEPROM/quickDemo/.gitignore b/Make AVR Examples/Chapter19_EEPROM/quickDemo/.gitignore
new file mode 100644
index 0000000..c286bce
--- /dev/null
+++ b/Make AVR Examples/Chapter19_EEPROM/quickDemo/.gitignore	
@@ -0,0 +1,3 @@
+*.eeprom
+*.raw
+
diff --git a/Make AVR Examples/Chapter19_EEPROM/quickDemo/Makefile b/Make AVR Examples/Chapter19_EEPROM/quickDemo/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter19_EEPROM/quickDemo/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter19_EEPROM/quickDemo/quickDemo.c b/Make AVR Examples/Chapter19_EEPROM/quickDemo/quickDemo.c
new file mode 100644
index 0000000..3184ee1
--- /dev/null
+++ b/Make AVR Examples/Chapter19_EEPROM/quickDemo/quickDemo.c	
@@ -0,0 +1,19 @@
+#include <avr/io.h>
+#include <avr/eeprom.h>
+
+int main(void) {
+
+  // Store the 8-bit value 5 in EEPROM slot 0
+  uint8_t *address = (uint8_t *) 0;
+  eeprom_update_byte(address, 5);
+
+  // Store the 16-bit value 12345 in EEPROM slots 5 and 6:
+  eeprom_update_word((uint16_t *) 5, 12345);
+
+  // Store a character array (string) in EEPROM slots 16-28:
+  char *stringPointer = (char *) 16;
+  char myString[] = "hello world.";
+  eeprom_update_block(myString, stringPointer, sizeof(myString));
+
+  return 0;
+}
diff --git a/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/.gitignore b/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/.gitignore
new file mode 100644
index 0000000..9b3c2e9
--- /dev/null
+++ b/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/.gitignore	
@@ -0,0 +1 @@
+vigenereCipher.eeprom
diff --git a/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/Makefile b/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/Makefile
new file mode 100644
index 0000000..3d9e544
--- /dev/null
+++ b/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 1000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/vigenereCipher.c b/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/vigenereCipher.c
new file mode 100644
index 0000000..267aa15
--- /dev/null
+++ b/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/vigenereCipher.c	
@@ -0,0 +1,146 @@
+/*
+Vigenere Cipher encoder / decoder demo
+And an excuse to play around with EEPROM memory
+ */
+
+#include "vigenereCipher.h"
+
+// -------- Functions --------- //
+
+void printFromEEPROM(char *eepromString) {
+  uint8_t letter;
+  do {
+    letter = eeprom_read_byte((uint8_t *) eepromString);
+    transmitByte(letter);
+    eepromString++;
+  } while (letter);
+}
+
+void enterText(char text[]) {
+  uint8_t i = 0;
+  char letter;
+  do {
+    letter = receiveByte();
+    transmitByte(letter);                                      /* echo */
+    text[i] = letter;
+    i++;
+  } while (!(letter == '\r') && (i < (MAX_TEXT_LENGTH - 1)));
+  text[i - 1] = 0;
+}
+
+void displayCodes(void) {
+  uint8_t i;
+  for (i = 0; i < 4; i++) {
+    transmitByte(' ');
+    transmitByte('0' + i);
+    printString(": ");
+    printFromEEPROM(codePointers[i]);
+    printString("\r\n");
+  }
+}
+
+void changeCode(char codeBuffer[]) {
+  char input;
+  char *codeAddress;
+  printString(" -- Choose code phrase to replace:\r\n");
+  do {
+    displayCodes();
+    input = receiveByte();
+  } while ((input < '0') || (input > '3'));
+  codeAddress = codePointers[input - '0'];
+  printString(" -- Enter new code: ");
+  enterText(codeBuffer);
+  eeprom_update_block(codeBuffer, codeAddress, CODE_LEN);
+}
+
+void selectCode(char code[]) {
+  char input;
+  char *codeAddress;
+  printFromEEPROM(promptSelectCode);
+  do {
+    displayCodes();
+    input = receiveByte();
+  } while ((input < '0') || (input > '3'));
+  codeAddress = codePointers[input - '0'];
+  eeprom_read_block(code, codeAddress, CODE_LEN);
+}
+
+void encodeVigenere(char text[], char code[]) {
+  uint8_t codePosition = 0;
+  uint8_t textPosition = 0;
+  do {
+    if (code[codePosition] == 0) {  /* loop when at end of code phrase */
+      codePosition = 0;
+    }
+    text[textPosition] += code[codePosition] - 32;
+    if (text[textPosition] > 126) {
+      text[textPosition] -= 95;
+    }                              /* keeps within printing characters */
+    codePosition++;                         /* and move on to the next */
+    textPosition++;
+  } while (text[textPosition]);     /* until zero at the end of string */
+}
+
+void decodeVigenere(char text[], char code[]) {
+  uint8_t codePosition = 0;
+  uint8_t textPosition = 0;
+  do {
+    if (code[codePosition] == 0) {
+      codePosition = 0;
+    }
+    if (code[codePosition] > text[textPosition]) {
+      text[textPosition] += 95;
+    }                              /* keeps within printing characters */
+    text[textPosition] -= code[codePosition] - 32;
+    codePosition++;
+    textPosition++;
+  } while (text[textPosition]);
+}
+
+int main(void) {
+  // -------- Inits --------- //
+
+  char textBuffer[MAX_TEXT_LENGTH];
+  char codeString[CODE_LEN];
+  char input;
+  initUSART();
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    // Menu
+    printFromEEPROM(welcomeString);
+    printFromEEPROM(promptText);
+    printString(textBuffer);
+    printString("\r\n");
+    printFromEEPROM(promptCode);
+    printString(codeString);
+    printString("\r\n\r\n ---------------------\r\n");
+    printFromEEPROM(menuEnterText);
+    printFromEEPROM(menuCodeText);
+    printFromEEPROM(menuChangeCode);
+    printFromEEPROM(menuEncode);
+    printFromEEPROM(menuDecode);
+    input = receiveByte();
+
+    switch (input) {
+    case 'e':                  // encode
+      encodeVigenere(textBuffer, codeString);
+      break;
+    case 'd':                  // decode
+      decodeVigenere(textBuffer, codeString);
+      break;
+    case 'n':                  // new text
+      printFromEEPROM(promptTypeText);
+      enterText(textBuffer);
+      break;
+    case 'c':                  // choose code
+      selectCode(codeString);
+      break;
+    case 'x':                  // change code
+      changeCode(codeString);
+      break;
+    }
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/vigenereCipher.c_outline b/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/vigenereCipher.c_outline
new file mode 100644
index 0000000..c9c1941
--- /dev/null
+++ b/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/vigenereCipher.c_outline	
@@ -0,0 +1,55 @@
+/*
+Vigenere Cipher encoder / decoder demo
+And an excuse to play around with EEPROM memory
+ */
+
+#include "vigenereCipher.h"
+
+// -------- Functions --------- //
+
+void printFromEEPROM(char *eepromString);
+void enterText(char text[]);
+void displayCodes(void);
+void changeCode(char codeBuffer[]);
+void selectCode(char code[]);
+void encodeVigenere(char text[], char code[]);
+void decodeVigenere(char text[], char code[]);
+
+int main(void) {
+  // -------- Inits --------- //
+
+  char textBuffer[MAX_TEXT_LENGTH];
+  char codeString[CODE_LEN];
+  char input;
+  initUSART();
+
+  // ------ Event loop ------ //
+  while (1) {
+
+    // Menu
+    printFromEEPROM(welcomeString);
+    // .... more fany menu printing
+    printFromEEPROM(menuDecode);
+    input = receiveByte();
+
+    switch (input) {
+    case 'e':                  // encode
+      encodeVigenere(textBuffer, codeString);
+      break;
+    case 'd':                  // decode
+      decodeVigenere(textBuffer, codeString);
+      break;
+    case 'n':                  // new text
+      printFromEEPROM(promptTypeText);
+      enterText(textBuffer);
+      break;
+    case 'c':                  // choose code
+      selectCode(codeString);
+      break;
+    case 'x':                  // change code
+      changeCode(codeString);
+      break;
+    }
+  }                                                  /* End event loop */
+  return (0);                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/vigenereCipher.h b/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/vigenereCipher.h
new file mode 100644
index 0000000..aed537c
--- /dev/null
+++ b/Make AVR Examples/Chapter19_EEPROM/vigenereCipher/vigenereCipher.h	
@@ -0,0 +1,50 @@
+
+#include <avr/io.h>
+#include <avr/eeprom.h>
+#include "USART.h"
+
+#define MAX_TEXT_LENGTH  256
+#define CODE_LEN         64
+
+// -------- Global Variables --------- //
+char EEMEM code0[CODE_LEN] = "ettubrute";
+char EEMEM code1[CODE_LEN] = "attackatdawn";
+char EEMEM code2[CODE_LEN] = "theraininspainfallsmainlyontheplain";
+char EEMEM code3[CODE_LEN] = "ablewasiereisawelba";
+char *codePointers[] = { code0, code1, code2, code3 };
+
+// Menu strings.  Why not store them in EEPROM?
+char EEMEM welcomeString[] = "\r\n--==  Vigenere Cipher  ==--\r\n";
+char EEMEM menuEncode[] = " [e] to encode text\r\n";
+char EEMEM menuDecode[] = " [d] to decode text\r\n\r\n";
+char EEMEM menuEnterText[] = " [n] to enter new text\r\n";
+char EEMEM menuCodeText[] = " [c] to select your code phrase\r\n";
+char EEMEM menuChangeCode[] = " [x] to modify code phrases\r\n";
+char EEMEM promptCode[] = "code: ";
+char EEMEM promptText[] = "\r\ntext: ";
+
+char EEMEM promptSelectCode[] = "Select codephrase:\r\n\r\n";
+char EEMEM promptTypeText[] = "Type your text: ";
+
+// Given the address of an EEPROM string, prints it out
+// Used for menu items
+void printFromEEPROM(char *eepromString);
+
+// Takes input from serial, stores it in the text array
+void enterText(char text[]);
+
+// Reads code phrases out of EEPROM and prints them.
+// Uses the codeBuffer for temporary storage
+void displayCodes(void);
+
+// Changes a code phrase, both in EEPROM and the current code
+void changeCode(char codeBuffer[]);
+
+// Pick a code phrase from EEPROM
+void selectCode(char code[]);
+
+// Encodes the passed text string, in place
+void encodeVigenere(char text[], char code[]);
+
+// Decodes the passed text string, in place
+void decodeVigenere(char text[], char code[]);
diff --git a/Make AVR Examples/LICENSE.txt b/Make AVR Examples/LICENSE.txt
new file mode 100644
index 0000000..c9d461b
--- /dev/null
+++ b/Make AVR Examples/LICENSE.txt	
@@ -0,0 +1,24 @@
+MIT License
+
+Copyright (c) 2014 Elliot Williams
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+Have fun!
+
diff --git a/Make AVR Examples/README.md b/Make AVR Examples/README.md
new file mode 100644
index 0000000..f48a201
--- /dev/null
+++ b/Make AVR Examples/README.md	
@@ -0,0 +1,107 @@
+Code and Examples from "Make: AVR Programming"
+==============================================
+
+Welcome!
+--------
+
+Here you'll find all the code (and more!) for the Maker Media book 
+ [Make: AVR Programming](http://shop.oreilly.com/product/0636920028161.do).
+
+
+Getting Started
+---------------
+
+* First, download the contents of this repository onto your hard-drive.  The easiest way
+  is with the "Download ZIP" button above and on the right-hand side of this very web
+  page.  Extract the zip file wherever is comfy.  (Feel free to clone the repo if you 
+  are comfortable with Git.)
+
+* Most of the projects share a common set of pin defines and a common simple
+  USART serial library in the **AVR-Programming-Library** directory.  The
+  makefiles I've included depend on the directory structure here by default, so
+  don't go moving the folders around unless you also change the path to
+  included files in the makefile.  
+  
+* If you're using the Arduino IDE, you'll want to copy the **AVR-Programming-Library** directory
+  into your **sketchbook/libraries** folder.  If you don't know where this is, you can find out in the 
+  "File...Settings" dialog within Arduino.  Now you can link your code to use this library simply
+  using "Sketch...Import Library" and selecting the library from the the menu.
+
+* Now you will be set to open the code, edit it, and flash it into the AVR following the directions
+  in the book.
+  
+  
+Repo Layout
+-----------
+
+All of the project code is organized by the chapters in the book.  So if
+you're looking for an example of some SPI code, see the "Chapter16_SPI" folder for 
+SPI-related projects.  That's obvious.
+
+But a bunch of the projects are interesting in addition to the topic covered in
+the chapter.  For instance, "Chapter05_Serial-IO" includes a project that uses
+the serial communication between your desktop computer and the AVR to turn your
+computer keyboard into a musical keyboard that plays notes generated on the
+AVR, turning it into a serial-port-controlled organ.  You wouldn't think to 
+go looking in the Serial I/O chapter unles you were following along in the book. 
+
+So for an overview all the projects, the file [allProjectsList](https://github.com/hexagon5un/AVR-Programming/blob/master/allProjectsList) lists them all out by name.  
+
+setupProject
+------------
+
+If you'd like a blank template to start writing your own AVR code, 
+have a look in the **setupProject** directory that I've included here. Inside, you'll find 
+**main.c** and **main.h** files that are essentially blank and ready to go.  **main.c** 
+makes use of my simple USART library, which is also included an linked in by the **Makefile**. 
+In short, you could copy this directory, rename files, and start using it in your own projects.
+
+But you don't have to do that manually.  Running *python setupProject.py
+myProjectName* will create a directory called **myProjectName** for you, copy
+the blank main files, renaming them as appropriate, and set up the Makefile
+accordingly.  All that's left for you to do is the hard part -- actually
+coding.  
+
+If you use this setup a lot, you'll want to personalize the **Makefile** and
+the two **main** files to suit your own preferences.  That way, whenever you
+start up a new project, it'll include a customized **Makefile** that has your
+programmer, chip type, and favorite baud rate already set.   
+
+Finally, if you like to map out your pin definitions in macro definitions, run
+*python createPinDefines.py*.  The program will ask you what you'd like to call
+each pin macro (e.g. "LED0") and then which pin on the AVR you'd like to
+associate with it (e.g. "PB1").  When you're done entering your pin layout,
+it'll create a "pinDefines.h" file with (I hope) nicely-named macros.  Move
+this file into the right directory, and include it in your code.  Calling
+LED0_SET_HIGH will turn your LED on.
+
+
+More!
+-----
+
+You've read the book, you've built the projects, you've worked through the code.
+But still you hunger for more projects, more examples, more, more, more!
+If I may toot my own horn, you should visit [LittleHacks.org](http://littlehacks.org)
+where I blog about whatever microcontroller projects I'm currently up to.  
+
+In particular, if you're reading
+ [Make: AVR Programming](http://shop.oreilly.com/product/0636920028161.do), and
+you're interested in fully-elaborated versions of the projects with more
+photos, videos, and explanation than could fit in a book, head on over to
+ [LittleHacks.org's AVR-Programming Section](http://littlehacks.org/AVR-Programming).  
+
+Once you've exhausted all of these resources, you should *definitely* head over
+to [The Cornell University ECE 4760 Final
+Projects](http://people.ece.cornell.edu/land/courses/ece4760/FinalProjects/)
+list page.  It's an awe-inspiring collection of applications, and sure to spark
+some creative thoughts.  It's all well-documented and there's tons of source
+code in C.  [Professor Land's links section]
+(http://people.ece.cornell.edu/land/courses/ece4760/#links) is also top-notch,
+and his lectures on YouTube are also worth a look if you're getting serious
+about this whole AVR deal.  
+
+
+
+
+
+
diff --git a/Make AVR Examples/allProjectsList b/Make AVR Examples/allProjectsList
new file mode 100644
index 0000000..8a8436e
--- /dev/null
+++ b/Make AVR Examples/allProjectsList	
@@ -0,0 +1,69 @@
+Chapter02_Programming-AVRs/blinkLED
+Chapter02_Programming-AVRs/blinkLED_AVR_style
+
+Chapter03_Digital-Output/povToy
+
+Chapter04_Bit-Twiddling/cylonEyes
+Chapter04_Bit-Twiddling/showingOffBits
+	
+Chapter05_Serial-IO/serialLoopback
+Chapter05_Serial-IO/serialOrgan
+
+Chapter06_Digital-Input/avrMusicBox
+Chapter06_Digital-Input/bossButton
+Chapter06_Digital-Input/debouncer
+Chapter06_Digital-Input/simpleButton
+Chapter06_Digital-Input/toggleButton
+
+Chapter07_Analog-to-Digital-Conversion-I/lightSensor
+Chapter07_Analog-to-Digital-Conversion-I/nightLight
+Chapter07_Analog-to-Digital-Conversion-I/slowScope
+
+Chapter08_Hardware-Interrupts/capSense
+Chapter08_Hardware-Interrupts/helloInterrupt
+
+Chapter09_Introduction-to-Timer-Counter-Hardware/amRadio
+Chapter09_Introduction-to-Timer-Counter-Hardware/reactionTimer
+Chapter09_Introduction-to-Timer-Counter-Hardware/timerAudio
+
+Chapter10_Pulse-Width-Modulation/bruteForcePWM
+Chapter10_Pulse-Width-Modulation/pwm
+Chapter10_Pulse-Width-Modulation/pwmOnAnyPin
+Chapter10_Pulse-Width-Modulation/pwmTimers
+
+Chapter11_Driving-Servo-Motors/servoSundial
+Chapter11_Driving-Servo-Motors/servoWorkout
+
+Chapter12_Analog-to-Digital-Conversion-II/footstepDetector
+Chapter12_Analog-to-Digital-Conversion-II/voltmeter
+
+Chapter13_Advanced-PWM-Tricks/adsr
+Chapter13_Advanced-PWM-Tricks/arpeggiator
+Chapter13_Advanced-PWM-Tricks/dds
+Chapter13_Advanced-PWM-Tricks/dds_interrupts
+Chapter13_Advanced-PWM-Tricks/dds_saw15
+Chapter13_Advanced-PWM-Tricks/dialTone
+Chapter13_Advanced-PWM-Tricks/fatSaw
+
+Chapter14_Switches/dcMotorWorkout
+
+Chapter15_Advanced-Motors/hBridgeWorkout
+Chapter15_Advanced-Motors/stepperWorkout
+
+Chapter16_SPI/spiEEPROMDemo
+
+Chapter17_I2C/i2cThermometer
+Chapter17_I2C/loggingThermometer
+
+Chapter18_Using-Flash-Program-Memory/progmemDemo1
+Chapter18_Using-Flash-Program-Memory/progmemDemo2
+Chapter18_Using-Flash-Program-Memory/progmemDemo3
+Chapter18_Using-Flash-Program-Memory/progmemDemo4
+Chapter18_Using-Flash-Program-Memory/progmemDemo5
+Chapter18_Using-Flash-Program-Memory/talkingVoltmeter
+
+Chapter19_EEPROM/eememDemo
+Chapter19_EEPROM/favoriteColor
+Chapter19_EEPROM/quickDemo
+Chapter19_EEPROM/vigenereCipher
+
diff --git a/Make AVR Examples/setupProject/Makefile b/Make AVR Examples/setupProject/Makefile
new file mode 100644
index 0000000..5c588dc
--- /dev/null
+++ b/Make AVR Examples/setupProject/Makefile	
@@ -0,0 +1,196 @@
+
+##########------------------------------------------------------##########
+##########              Project-specific Details                ##########
+##########    Check these every time you start a new project    ##########
+##########------------------------------------------------------##########
+
+MCU   = atmega168p
+F_CPU = 8000000UL  
+BAUD  = 9600UL
+## Also try BAUD = 19200 or 38400 if you're feeling lucky.
+
+## A directory for common include files and the simple USART library.
+## If you move either the current folder or the Library folder, you'll 
+##  need to change this path to match.
+LIBDIR = ../../AVR-Programming-Library
+
+##########------------------------------------------------------##########
+##########                 Programmer Defaults                  ##########
+##########          Set up once, then forget about it           ##########
+##########        (Can override.  See bottom of file.)          ##########
+##########------------------------------------------------------##########
+
+PROGRAMMER_TYPE = usbtiny
+# extra arguments to avrdude: baud rate, chip type, -F flag, etc.
+PROGRAMMER_ARGS = 	
+
+##########------------------------------------------------------##########
+##########                  Program Locations                   ##########
+##########     Won't need to change if they're in your PATH     ##########
+##########------------------------------------------------------##########
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+OBJDUMP = avr-objdump
+AVRSIZE = avr-size
+AVRDUDE = avrdude
+
+##########------------------------------------------------------##########
+##########                   Makefile Magic!                    ##########
+##########         Summary:                                     ##########
+##########             We want a .hex file                      ##########
+##########        Compile source files into .elf                ##########
+##########        Convert .elf file into .hex                   ##########
+##########        You shouldn't need to edit below.             ##########
+##########------------------------------------------------------##########
+
+## The name of your project (without the .c)
+# TARGET = blinkLED
+## Or name it automatically after the enclosing directory
+TARGET = $(lastword $(subst /, ,$(CURDIR)))
+
+# Object files: will find all .c/.h files in current directory
+#  and in LIBDIR.  If you have any other (sub-)directories with code,
+#  you can add them in to SOURCES below in the wildcard statement.
+SOURCES=$(wildcard *.c $(LIBDIR)/*.c)
+OBJECTS=$(SOURCES:.c=.o)
+HEADERS=$(SOURCES:.c=.h)
+
+## Compilation options, type man avr-gcc if you're curious.
+CPPFLAGS = -DF_CPU=$(F_CPU) -DBAUD=$(BAUD) -I. -I$(LIBDIR)
+CFLAGS = -Os -g -std=gnu99 -Wall
+## Use short (8-bit) data types 
+CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums 
+## Splits up object files per function
+CFLAGS += -ffunction-sections -fdata-sections 
+LDFLAGS = -Wl,-Map,$(TARGET).map 
+## Optional, but often ends up with smaller code
+LDFLAGS += -Wl,--gc-sections 
+## Relax shrinks code even more, but makes disassembly messy
+## LDFLAGS += -Wl,--relax
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_flt -lm  ## for floating-point printf
+## LDFLAGS += -Wl,-u,vfprintf -lprintf_min      ## for smaller printf
+TARGET_ARCH = -mmcu=$(MCU)
+
+## Explicit pattern rules:
+##  To make .o files from .c files 
+%.o: %.c $(HEADERS) Makefile
+	 $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c -o $@ $<;
+
+$(TARGET).elf: $(OBJECTS)
+	$(CC) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
+
+%.hex: %.elf
+	 $(OBJCOPY) -j .text -j .data -O ihex $< $@
+
+%.eeprom: %.elf
+	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ 
+
+%.lst: %.elf
+	$(OBJDUMP) -S $< > $@
+
+## These targets don't have files named after them
+.PHONY: all disassemble disasm eeprom size clean squeaky_clean flash fuses
+
+all: $(TARGET).hex 
+
+debug:
+	@echo
+	@echo "Source files:"   $(SOURCES)
+	@echo "MCU, F_CPU, BAUD:"  $(MCU), $(F_CPU), $(BAUD)
+	@echo	
+
+# Optionally create listing file from .elf
+# This creates approximate assembly-language equivalent of your code.
+# Useful for debugging time-sensitive bits, 
+# or making sure the compiler does what you want.
+disassemble: $(TARGET).lst
+
+disasm: disassemble
+
+# Optionally show how big the resulting program is 
+size:  $(TARGET).elf
+	$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
+
+clean:
+	rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
+	$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
+	$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
+	$(TARGET).eeprom
+
+squeaky_clean:
+	rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~ *.eeprom
+
+##########------------------------------------------------------##########
+##########              Programmer-specific details             ##########
+##########           Flashing code to AVR using avrdude         ##########
+##########------------------------------------------------------##########
+
+flash: $(TARGET).hex 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
+
+## An alias
+program: flash
+
+flash_eeprom: $(TARGET).eeprom
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
+
+avrdude_terminal:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
+
+## If you've got multiple programmers that you use, 
+## you can define them here so that it's easy to switch.
+## To invoke, use something like `make flash_arduinoISP`
+flash_usbtiny: PROGRAMMER_TYPE = usbtiny
+flash_usbtiny: PROGRAMMER_ARGS =  # USBTiny works with no further arguments
+flash_usbtiny: flash
+
+flash_usbasp: PROGRAMMER_TYPE = usbasp
+flash_usbasp: PROGRAMMER_ARGS =  # USBasp works with no further arguments
+flash_usbasp: flash
+
+flash_arduinoISP: PROGRAMMER_TYPE = avrisp
+flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P /dev/ttyACM0 
+## (for windows) flash_arduinoISP: PROGRAMMER_ARGS = -b 19200 -P com5
+flash_arduinoISP: flash
+
+flash_109: PROGRAMMER_TYPE = avr109
+flash_109: PROGRAMMER_ARGS = -b 9600 -P /dev/ttyUSB0
+flash_109: flash
+
+##########------------------------------------------------------##########
+##########       Fuse settings and suitable defaults            ##########
+##########------------------------------------------------------##########
+
+## Mega 48, 88, 168, 328 default values
+LFUSE = 0x62
+HFUSE = 0xdf
+EFUSE = 0x00
+
+## Generic 
+FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+
+fuses: 
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) \
+	           $(PROGRAMMER_ARGS) $(FUSE_STRING)
+show_fuses:
+	$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nv	
+
+## Called with no extra definitions, sets to defaults
+set_default_fuses:  FUSE_STRING = -U lfuse:w:$(LFUSE):m -U hfuse:w:$(HFUSE):m -U efuse:w:$(EFUSE):m 
+set_default_fuses:  fuses
+
+## Set the fuse byte for full-speed mode
+## Note: can also be set in firmware for modern chips
+set_fast_fuse: LFUSE = 0xE2
+set_fast_fuse: FUSE_STRING = -U lfuse:w:$(LFUSE):m 
+set_fast_fuse: fuses
+
+## Set the EESAVE fuse byte to preserve EEPROM across flashes
+set_eeprom_save_fuse: HFUSE = 0xD7
+set_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+set_eeprom_save_fuse: fuses
+
+## Clear the EESAVE fuse byte
+clear_eeprom_save_fuse: FUSE_STRING = -U hfuse:w:$(HFUSE):m
+clear_eeprom_save_fuse: fuses
diff --git a/Make AVR Examples/setupProject/USART.c b/Make AVR Examples/setupProject/USART.c
new file mode 100644
index 0000000..7e8139a
--- /dev/null
+++ b/Make AVR Examples/setupProject/USART.c	
@@ -0,0 +1,137 @@
+
+/*
+  Quick and dirty functions that make serial communications work.
+
+  Note that receiveByte() blocks -- it sits and waits _forever_ for
+   a byte to come in.  If you're doing anything that's more interesting,
+   you'll want to implement this with interrupts.
+
+   initUSART requires BAUDRATE to be defined in order to calculate
+     the bit-rate multiplier.  9600 is a reasonable default.
+
+  May not work with some of the older chips:
+    Tiny2313, Mega8, Mega16, Mega32 have different pin macros
+    If you're using these chips, see (e.g.) iom8.h for how it's done.
+    These old chips don't specify UDR0 vs UDR1.
+    Correspondingly, the macros will just be defined as UDR.
+*/
+
+#include <avr/io.h>
+#include "USART.h"
+#include <util/setbaud.h>
+
+void initUSART(void) {                                /* requires BAUD */
+  UBRR0H = UBRRH_VALUE;                        /* defined in setbaud.h */
+  UBRR0L = UBRRL_VALUE;
+#if USE_2X
+  UCSR0A |= (1 << U2X0);
+#else
+  UCSR0A &= ~(1 << U2X0);
+#endif
+                                  /* Enable USART transmitter/receiver */
+  UCSR0B = (1 << TXEN0) | (1 << RXEN0);
+  UCSR0C = (1 << UCSZ01) | (1 << UCSZ00);   /* 8 data bits, 1 stop bit */
+}
+
+
+void transmitByte(uint8_t data) {
+                                     /* Wait for empty transmit buffer */
+  loop_until_bit_is_set(UCSR0A, UDRE0);
+  UDR0 = data;                                            /* send data */
+}
+
+uint8_t receiveByte(void) {
+  loop_until_bit_is_set(UCSR0A, RXC0);       /* Wait for incoming data */
+  return UDR0;                                /* return register value */
+}
+
+
+                       /* Here are a bunch of useful printing commands */
+
+void printString(const char myString[]) {
+  uint8_t i = 0;
+  while (myString[i]) {
+    transmitByte(myString[i]);
+    i++;
+  }
+}
+
+void readString(char myString[], uint8_t maxLength) {
+  char response;
+  uint8_t i;
+  i = 0;
+  while (i < (maxLength - 1)) {                   /* prevent over-runs */
+    response = receiveByte();
+    transmitByte(response);                                    /* echo */
+    if (response == '\r') {                     /* enter marks the end */
+      break;
+    }
+    else {
+      myString[i] = response;                       /* add in a letter */
+      i++;
+    }
+  }
+  myString[i] = 0;                          /* terminal NULL character */
+}
+
+void printByte(uint8_t byte) {
+              /* Converts a byte to a string of decimal text, sends it */
+  transmitByte('0' + (byte / 100));                        /* Hundreds */
+  transmitByte('0' + ((byte / 10) % 10));                      /* Tens */
+  transmitByte('0' + (byte % 10));                             /* Ones */
+}
+
+void printWord(uint16_t word) {
+  transmitByte('0' + (word / 10000));                 /* Ten-thousands */
+  transmitByte('0' + ((word / 1000) % 10));               /* Thousands */
+  transmitByte('0' + ((word / 100) % 10));                 /* Hundreds */
+  transmitByte('0' + ((word / 10) % 10));                      /* Tens */
+  transmitByte('0' + (word % 10));                             /* Ones */
+}
+
+void printBinaryByte(uint8_t byte) {
+                       /* Prints out a byte as a series of 1's and 0's */
+  uint8_t bit;
+  for (bit = 7; bit < 255; bit--) {
+    if (bit_is_set(byte, bit))
+      transmitByte('1');
+    else
+      transmitByte('0');
+  }
+}
+
+char nibbleToHexCharacter(uint8_t nibble) {
+                                   /* Converts 4 bits into hexadecimal */
+  if (nibble < 10) {
+    return ('0' + nibble);
+  }
+  else {
+    return ('A' + nibble - 10);
+  }
+}
+
+void printHexByte(uint8_t byte) {
+                        /* Prints a byte as its hexadecimal equivalent */
+  uint8_t nibble;
+  nibble = (byte & 0b11110000) >> 4;
+  transmitByte(nibbleToHexCharacter(nibble));
+  nibble = byte & 0b00001111;
+  transmitByte(nibbleToHexCharacter(nibble));
+}
+
+uint8_t getNumber(void) {
+  // Gets a numerical 0-255 from the serial port.
+  // Converts from string to number.
+  char hundreds = '0';
+  char tens = '0';
+  char ones = '0';
+  char thisChar = '0';
+  do {                                                   /* shift over */
+    hundreds = tens;
+    tens = ones;
+    ones = thisChar;
+    thisChar = receiveByte();                   /* get a new character */
+    transmitByte(thisChar);                                    /* echo */
+  } while (thisChar != '\r');                     /* until type return */
+  return (100 * (hundreds - '0') + 10 * (tens - '0') + ones - '0');
+}
diff --git a/Make AVR Examples/setupProject/USART.h b/Make AVR Examples/setupProject/USART.h
new file mode 100644
index 0000000..c3f18eb
--- /dev/null
+++ b/Make AVR Examples/setupProject/USART.h	
@@ -0,0 +1,44 @@
+/* Functions to initialize, send, receive over USART
+
+   initUSART requires BAUD to be defined in order to calculate
+     the bit-rate multiplier.
+ */
+
+#ifndef BAUD                          /* if not defined in Makefile... */
+#define BAUD  9600                     /* set a safe default baud rate */
+#endif
+
+                                  /* These are defined for convenience */
+#define   USART_HAS_DATA   bit_is_set(UCSR0A, RXC0)
+#define   USART_READY      bit_is_set(UCSR0A, UDRE0)
+
+/* Takes the defined BAUD and F_CPU,
+   calculates the bit-clock multiplier,
+   and configures the hardware USART                   */
+void initUSART(void);
+
+/* Blocking transmit and receive functions.
+   When you call receiveByte() your program will hang until
+   data comes through.  We'll improve on this later. */
+void transmitByte(uint8_t data);
+uint8_t receiveByte(void);
+
+void printString(const char myString[]);
+             /* Utility function to transmit an entire string from RAM */
+void readString(char myString[], uint8_t maxLength);
+/* Define a string variable, pass it to this function
+   The string will contain whatever you typed over serial */
+
+void printByte(uint8_t byte);
+                  /* Prints a byte out as its 3-digit ascii equivalent */
+void printWord(uint16_t word);
+        /* Prints a word (16-bits) out as its 5-digit ascii equivalent */
+
+void printBinaryByte(uint8_t byte);
+                                     /* Prints a byte out in 1s and 0s */
+char nibbleToHex(uint8_t nibble);
+void printHexByte(uint8_t byte);
+                                   /* Prints a byte out in hexadecimal */
+uint8_t getNumber(void);
+/* takes in up to three ascii digits,
+ converts them to a byte when press enter */
diff --git a/Make AVR Examples/setupProject/createPinDefines.py b/Make AVR Examples/setupProject/createPinDefines.py
new file mode 100644
index 0000000..e0f555d
--- /dev/null
+++ b/Make AVR Examples/setupProject/createPinDefines.py	
@@ -0,0 +1,61 @@
+#! /usr/bin/env python
+
+## Given a list of names and pin defines, runs through a routine that
+## sets up a standard set of macros which can then be cut/paste or
+## otherwise included.
+
+import sys
+try:
+    outputFilename = sys.argv[1]
+except:
+    print
+    print 'No filename passed, saving to "pinDefinitions.h" in this directory.'
+    outputFilename = "pinDefinitions.h"
+
+print
+print
+print "First we need to define macro names and the coresponding AVR pins."
+print "None of the names are case-sensitive -- all are converted to uppercase."
+print "When you're done, hit [enter] for the macro name."
+print " "
+
+
+nicknames = []
+pinouts = []
+while(True):
+    nickname = raw_input("\nPin Macro Name: ").strip().upper()
+    if (nickname == ""):
+        break
+    nicknames.append(nickname)
+    pinout = raw_input("AVR Pinout: ").strip().upper()
+    pinouts.append(pinout)
+    
+output =  "// ---------------\n//   Pin Defines  \n// ---------------\n\n"
+for (nickname, pinout) in zip(nicknames, pinouts):
+    output += "#define %s                     %s\n" % (nickname, pinout)
+    output += "#define %s_PORT                PORT%s\n" % (nickname, pinout[1])
+    output += "#define %s_PIN                 PIN%s\n" % (nickname, pinout[1])
+    output += "#define %s_DDR                 DDR%s\n" % (nickname, pinout[1])
+    output += "#define %s_SET_OUTPUT          %s_DDR |= _BV(%s)\n" %\
+        (nickname, nickname, nickname)
+    output += "#define %s_SET_INPUT           %s_DDR &= ~_BV(%s)\n" %\
+        (nickname, nickname, nickname)
+    output += "#define %s_SET_HIGH            %s_PORT |= _BV(%s)\n" % \
+        (nickname, nickname, nickname)
+    output += "#define %s_SET_LOW             %s_PORT &= ~_BV(%s)\n" % \
+        (nickname, nickname, nickname)
+    output += "#define %s_TOGGLE              %s_PORT ^= _BV(%s)\n" % \
+        (nickname, nickname, nickname)    
+    output += "#define %s_IS_HIGH             (%s_PIN & _BV(%s))\n" % \
+        (nickname, nickname, nickname)
+    output += "#define %s_IS_LOW              !(%s_PIN & _BV(%s))\n" % \
+        (nickname, nickname, nickname)        
+    output += "\n"
+
+    
+try:
+    outfile = open(outputFilename, "w")
+    outfile.write(output)
+    outfile.close()
+except NameError:
+    print output
diff --git a/Make AVR Examples/setupProject/macros.h b/Make AVR Examples/setupProject/macros.h
new file mode 100644
index 0000000..7987b22
--- /dev/null
+++ b/Make AVR Examples/setupProject/macros.h	
@@ -0,0 +1,26 @@
+
+/* Standard Macros */
+/* You can totally get by without these, but why? */
+
+/* Make sure we've already got io / sfr / pindefs loaded */
+#ifndef   _AVR_IO_H_
+#include  <avr/io.h>
+#endif
+
+/* Reminder: the following useful bit-twiddling macros are
+   always included in avr/sfr_defs.h, which is called from
+   avr/io.h 
+
+ bit_is_set(sfr, bit)
+ bit_is_clear(sfr, bit)
+ loop_until_bit_is_set(sfr, bit)
+ loop_until_bit_is_clear(sfr, bit)
+
+*/
+
+/* Define up the full complement of bit-twiddling macros */
+#define BV(bit)               (1 << bit)
+#define set_bit(sfr, bit)     (_SFR_BYTE(sfr) |= BV(bit))  // old sbi()
+#define clear_bit(sfr, bit)   (_SFR_BYTE(sfr) &= ~BV(bit)) // old cbi()
+#define toggle_bit(sfr, bit)  (_SFR_BYTE(sfr) ^= BV(bit))  
+
diff --git a/Make AVR Examples/setupProject/main.c b/Make AVR Examples/setupProject/main.c
new file mode 100644
index 0000000..4e08b2d
--- /dev/null
+++ b/Make AVR Examples/setupProject/main.c	
@@ -0,0 +1,22 @@
+
+#include "main.h" 
+
+// -------- Global Variables --------- //
+
+// -------- Functions --------- //
+
+int main(void) {
+  // -------- Inits --------- //
+  
+  // clock_prescale_set(clock_div_1);                 /* CPU Clock: 8 MHz */
+  initUSART();
+  printString("OK");
+
+  // ------ Event loop ------ //
+  while (1) {
+
+
+
+  }                                                  /* End event loop */
+  return (0);                            /* This line is never reached */
+}
diff --git a/Make AVR Examples/setupProject/main.h b/Make AVR Examples/setupProject/main.h
new file mode 100644
index 0000000..d505039
--- /dev/null
+++ b/Make AVR Examples/setupProject/main.h	
@@ -0,0 +1,19 @@
+
+// Standard AVR includes
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+#include <avr/eeprom.h>
+#include <avr/pgmspace.h>
+#include <avr/sleep.h>
+#include <avr/wdt.h>
+#include <avr/power.h>
+
+// Standard includes
+#include <stdlib.h>
+
+// These are optional, but nice to have around.
+// Feel free to comment them out if you don't use them.
+#include "USART.h"
+#include "macros.h"
+
diff --git a/Make AVR Examples/setupProject/setupProject.py b/Make AVR Examples/setupProject/setupProject.py
new file mode 100644
index 0000000..5bf6c73
--- /dev/null
+++ b/Make AVR Examples/setupProject/setupProject.py	
@@ -0,0 +1,41 @@
+#! /usr/bin/env python
+## Simple Python routine for creating a new AVR project
+## Feel free to extend this to meet your needs
+
+## In particular, main.h includes nearly every AVR library you'll ever need
+##   which is no problem, b/c the linker will just ignore the unused ones.
+##   But if you're not using them, it might cause confusion later.
+##   Trim them down to fit?
+
+## Or, if you're feeling DIY, you can just copy the Makefile, main.c and main.h
+## into a new directory yourself.  The other files are optional, but handy. 
+
+import os
+import shutil
+import sys
+
+## Get command-line input
+class UsageError(Exception):
+    pass
+try:
+    newProjectName = sys.argv[1]
+except IndexError:
+    raise(UsageError("Please specify a project name on the command-line.\n"))
+
+## Create new project directory...
+## ... in parent directory
+## relativeDirectory = os.path.join(os.path.pardir, newProjectName)
+## ... or in this directory, and you get to move it yourself.
+relativeDirectory = newProjectName
+os.mkdir(relativeDirectory)
+
+## Files copied directly over...
+def copyToNewDirectory(whichFile, newDirectory):
+    shutil.copy(whichFile, newDirectory)
+## ... these ones. 
+for filename in ["Makefile", "main.c", "main.h", "USART.h", "USART.c", "macros.h"]:
+    copyToNewDirectory(filename, relativeDirectory)
+
+print "Copied Makefile, main.c, and main.h into %s." % relativeDirectory
+print "Time to start coding."
+