Chapter 1 : Getting Started
Introduction
Installing the Integrated Development Environment (IDE)
Setting Up the Arduino Board
Using the Integrated Development Environment (IDE) to Prepare an Arduino Sketch
Uploading and Running the Blink Sketch
Creating and Saving a Sketch
Using Arduino

Chapter 2 : Making the Sketch Do Your Bidding
Introduction
Structuring an Arduino Program
Using Simple Primitive Types (Variables)
Using Floating-Point Numbers
Working with Groups of Values
Using Arduino String Functionality
Using C Character Strings
Splitting Comma-Separated Text into Groups
Converting a Number to a String
Converting a String to a Number
Structuring Your Code into Functional Blocks
Returning More Than One Value from a Function
Taking Actions Based on Conditions
Repeating a Sequence of Statements
Repeating Statements with a Counter
Breaking Out of Loops
Taking a Variety of Actions Based on a Single Variable
Comparing Character and Numeric Values
Comparing Strings
Performing Logical Comparisons
Performing Bitwise Operations
Combining Operations and Assignment

Chapter 3 : Using Mathematical Operators
Introduction
Adding, Subtracting, Multiplying, and Dividing
Incrementing and Decrementing Values
Finding the Remainder After Dividing Two Values
Determining the Absolute Value
Constraining a Number to a Range of Values
Finding the Minimum or Maximum of Some Values
Raising a Number to a Power
Taking the Square Root
Rounding Floating-Point Numbers Up and Down
Using Trigonometric Functions
Generating Random Numbers
Setting and Reading Bits
Shifting Bits
Extracting High and Low Bytes in an int or long
Forming an int or long from High and Low Bytes

Chapter 4 : Serial Communications
Introduction
Sending Debug Information from Arduino to Your Computer
Sending Formatted Text and Numeric Data from Arduino
Receiving Serial Data in Arduino
Sending Multiple Text Fields from Arduino in a Single Message
Receiving Multiple Text Fields in a Single Message in Arduino
Sending Binary Data from Arduino
Receiving Binary Data from Arduino on a Computer
Sending Binary Values from Processing to Arduino
Sending the Value of Multiple Arduino Pins
How to Move the Mouse Cursor on a PC or Mac
Controlling Google Earth Using Arduino
Logging Arduino Data to a File on Your Computer
Sending Data to Two Serial Devices at the Same Time
Receiving Serial Data from Two Devices at the Same Time
Setting Up Processing on Your Computer to Send and Receive Serial Data

Chapter 5 : Simple Digital and Analog Input
Introduction
Using a Switch
Using a Switch Without External Resistors
Reliably Detecting the Closing of a Switch
Determining How Long a Switch Is Pressed
Reading a Keypad
Reading Analog Values
Changing the Range of Values
Reading More Than Six Analog Inputs
Displaying Voltages Up to 5V
Responding to Changes in Voltage
Measuring Voltages More Than 5V (Voltage Dividers)

Chapter 6 : Getting Input from Sensors
Introduction
Detecting Movement
Detecting Light
Detecting Motion (Integrating Passive Infrared Detectors)
Measuring Distance
Measuring Distance Accurately
Detecting Vibration
Detecting Sound
Measuring Temperature
Reading RFID Tags
Tracking Rotary Movement
Tracking the Movement of More Than One Rotary Encoder
Tracking Rotary Movement in a Busy Sketch
Using a Mouse
Getting Location from a GPS
Detecting Rotation Using a Gyroscope
Detecting Direction
Getting Input from a Game Control Pad (PlayStation)
Reading Acceleration

Chapter 7 : Visual Output
Introduction
Connecting and Using LEDs
Adjusting the Brightness of an LED
Driving High-Power LEDs
Adjusting the Color of an LED
Sequencing Multiple LEDs: Creating a Bar Graph
Sequencing Multiple LEDs: Making a Chase Sequence (Knight Rider)
Controlling an LED Matrix Using Multiplexing
Displaying Images on an LED Matrix
Controlling a Matrix of LEDs: Charlieplexing
Driving a 7-Segment LED Display
Driving Multidigit, 7-Segment LED Displays: Multiplexing
Driving Multidigit, 7-Segment LED Displays Using MAX7221 Shift Registers
Controlling an Array of LEDs by Using MAX72xx Shift Registers
Increasing the Number of Analog Outputs Using PWM Extender Chips (TLC5940)
Using an Analog Panel Meter as a Display

Chapter 8 : Physical Output
Introduction
Controlling the Position of a Servo
Controlling One or Two Servos with a Potentiometer or Sensor
Controlling the Speed of Continuous Rotation Servos
Controlling Servos Using Computer Commands
Driving a Brushless Motor (Using a Hobby Speed Controller)
Controlling Solenoids and Relays
Making an Object Vibrate
Driving a Brushed Motor Using a Transistor
Controlling the Direction of a Brushed Motor with an H-Bridge
Controlling the Direction and Speed of a Brushed Motor with an H-Bridge
Using Sensors to Control the Direction and Speed of Brushed Motors (L293 H-Bridge)
Driving a Bipolar Stepper Motor
Driving a Bipolar Stepper Motor (Using the EasyDriver Board)
Driving a Unipolar Stepper Motor (ULN2003A)

Chapter 9 : Audio Output
Introduction
Playing Tones
Playing a Simple Melody
Generating More Than One Simultaneous Tone
Generating Audio Tones and Fading an LED
Playing a WAV File
Controlling MIDI
Making an Audio Synthesizer

Chapter 10 : Remotely Controlling External Devices
Introduction
Responding to an Infrared Remote Control
Decoding Infrared Remote Control Signals
Imitating Remote Control Signals
Controlling a Digital Camera
Controlling AC Devices by Hacking a Remote-Controlled Switch

Chapter 11 : Using Displays
Introduction
Connecting and Using a Text LCD Display
Formatting Text
Turning the Cursor and Display On or Off
Scrolling Text
Displaying Special Symbols
Creating Custom Characters
Displaying Symbols Larger Than a Single Character
Displaying Pixels Smaller Than a Single Character
Connecting and Using a Graphical LCD Display
Creating Bitmaps for Use with a Graphical Display
Displaying Text on a TV

Chapter 12 : Using Time and Dates
Introduction
Creating Delays
Using millis to Determine Duration
More Precisely Measuring the Duration of a Pulse
Using Arduino as a Clock
Creating an Alarm to Periodically Call a Function
Using a Real-Time Clock

Chapter 13 : Communicating Using I2C and SPI
Introduction
Controlling an RGB LED Using the BlinkM Module
Using the Wii Nunchuck Accelerometer
Interfacing to an External Real-Time Clock
Adding External EEPROM Memory
Reading Temperature with a Digital Thermometer
Driving Four 7-Segment LEDs Using Only Two Wires
Integrating an I2C Port Expander
Driving Multidigit, 7-Segment Displays Using SPI
Communicating Between Two or More Arduino Boards

Chapter 14 : Wireless Communication
Introduction
Sending Messages Using Low-Cost Wireless Modules
Connecting Arduino to a ZigBee or 802.15.4 Network
Sending a Message to a Particular XBee
Sending Sensor Data Between XBees
Activating an Actuator Connected to an XBee
Sending Messages Using Low-Cost Transceivers
Communicating with Bluetooth Devices

Chapter 15 : Ethernet and Networking
Introduction
Setting Up the Ethernet Shield
Obtaining Your IP Address Automatically
Resolving Hostnames to IP Addresses (DNS)
Requesting Data from a Web Server
Requesting Data from a Web Server Using XML
Setting Up an Arduino to Be a Web Server
Handling Incoming Web Requests
Handling Incoming Requests for Specific Pages
Using HTML to Format Web Server Responses
Serving Web Pages Using Forms (POST)
Serving Web Pages Containing Large Amounts of Data
Sending Twitter Messages
Sending and Receiving Simple Messages (UDP)
Getting the Time from an Internet Time Server
Monitoring Pachube Feeds
Sending Information to Pachube

Chapter 16 : Using, Modifying, and Creating Libraries
Introduction
Using the Built-in Libraries
Installing Third-Party Libraries
Modifying a Library
Creating Your Own Library
Creating a Library That Uses Other Libraries
Updating Third-Party Libraries for Arduino 1.0

Chapter 17 : Advanced Coding and Memory Handling
Introduction
Understanding the Arduino Build Process
Determining the Amount of Free and Used RAM
Storing and Retrieving Numeric Values in Program Memory
Storing and Retrieving Strings in Program Memory
Using #define and const Instead of Integers
Using Conditional Compilations

Chapter 18 : Using the Controller Chip Hardware
Introduction
Storing Data in Permanent EEPROM Memory
Using Hardware Interrupts
Setting Timer Duration
Setting Timer Pulse Width and Duration
Creating a Pulse Generator
Changing a Timer’s PWM Frequency
Counting Pulses
Measuring Pulses More Accurately
Measuring Analog Values Quickly
Reducing Battery Drain
Setting Digital Pins Quickly
Uploading Sketches Using a Programmer
Replacing the Arduino Bootloader
Reprogram the Uno to Emulate a Native USB device

Appendix : Electronic Components
Capacitor
Diode
Integrated Circuit
Keypad
LED
Motor (DC)
Optocoupler
Photocell (Photoresistor)
Piezo
Pot (Potentiometer)
Relay
Resistor
Solenoid
Speaker
Stepper Motor
Switch
Transistor
See Also

Appendix : Using Schematic Diagrams and Data Sheets
How to Read a Data Sheet
Choosing and Using Transistors for Switching

Appendix : Building and Connecting the Circuit
Using a Breadboard
Connecting and Using External Power Supplies and Batteries
Using Capacitors for Decoupling
Using Snubber Diodes with Inductive Loads
Working with AC Line Voltages

Appendix : Tips on Troubleshooting Software Problems
Code That Won’t Compile
Code That Compiles but Does Not Work as Expected

Appendix : Tips on Troubleshooting Hardware Problems
Still Stuck?

Appendix : Digital and Analog Pins

Appendix : ASCII and Extended Character Sets

Appendix : Migrating to Arduino 1.0
Migrating Print Statements
Migrating Wire (I2C) Statements
Migrating Ethernet Statements
Migrating Libraries
New Stream Parsing Functions

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