Arduino Cookbook

Recipes to Begin, Expand, and Enhance Your Projects

Larger Cover

Arduino Cookbook

Recipes to Begin, Expand, and Enhance Your Projects

By Michael Margolis

Publisher: O'Reilly Media

Released: March 2011

Pages: 662

Create your own toys, remote controllers, alarms, detectors, robots, and many other projects with the Arduino device. This simple microcontroller board lets artists and designers build a variety of amazing objects and prototypes that interact with the physical world. With this cookbook you can dive right in and experiment with more than a hundred tips and techniques, no matter what your skill level is.

The recipes in this book provide solutions for most common problems and questions Arduino users have, including everything from programming fundamentals to working with sensors, motors, lights, and sound, or communicating over wired and wireless networks. You'll find the examples and advice you need to begin, expand, and enhance your projects right away.

Get to know the Arduino development environment
Understand the core elements of the Arduino programming language
Use common output devices for light, motion, and sound
Interact with almost any device that has a remote control
Learn techniques for handling time delays and time measurement
Use simple ways to transfer digital information from sensors to the Arduino device
Create complex projects that incorporate shields and external modules
Use and modify existing Arduino libraries, and learn how to create your own

Chapter 1 Getting Started
1. Introduction
2. Installing the Integrated Development Environment (IDE)
3. Setting Up the Arduino Board
4. Using the Integrated Development Environment (IDE) to Prepare an Arduino Sketch
5. Uploading and Running the Blink Sketch
6. Creating and Saving a Sketch
7. Using Arduino
Chapter 2 Making the Sketch Do Your Bidding
1. Introduction
2. Structuring an Arduino Program
3. Using Simple Primitive Types (Variables)
4. Using Floating-Point Numbers
5. Working with Groups of Values
6. Using Arduino String Functionality
7. Using C Character Strings
8. Splitting Comma-Separated Text into Groups
9. Converting a Number to a String
10. Converting a String to a Number
11. Structuring Your Code into Functional Blocks
12. Returning More Than One Value from a Function
13. Taking Actions Based on Conditions
14. Repeating a Sequence of Statements
15. Repeating Statements with a Counter
16. Breaking Out of Loops
17. Taking a Variety of Actions Based on a Single Variable
18. Comparing Character and Numeric Values
19. Comparing Strings
20. Performing Logical Comparisons
21. Performing Bitwise Operations
22. Combining Operations and Assignment
Chapter 3 Using Mathematical Operators
1. Introduction
2. Adding, Subtracting, Multiplying, and Dividing
3. Incrementing and Decrementing Values
4. Finding the Remainder After Dividing Two Values
5. Determining the Absolute Value
6. Constraining a Number to a Range of Values
7. Finding the Minimum or Maximum of Some Values
8. Raising a Number to a Power
9. Taking the Square Root
10. Rounding Floating-Point Numbers Up and Down
11. Using Trigonometric Functions
12. Generating Random Numbers
13. Setting and Reading Bits
14. Shifting Bits
15. Extracting High and Low Bytes in an int or long
16. Forming an int or long from High and Low Bytes
Chapter 4 Serial Communications
1. Introduction
2. Sending Debug Information from Arduino to Your Computer
3. Sending Formatted Text and Numeric Data from Arduino
4. Receiving Serial Data in Arduino
5. Sending Multiple Text Fields from Arduino in a Single Message
6. Receiving Multiple Text Fields in a Single Message in Arduino
7. Sending Binary Data from Arduino
8. Receiving Binary Data from Arduino on a Computer
9. Sending Binary Values from Processing to Arduino
10. Sending the Value of Multiple Arduino Pins
11. How to Move the Mouse Cursor on a PC or Mac
12. Controlling Google Earth Using Arduino
13. Logging Arduino Data to a File on Your Computer
14. Sending Data to Two Serial Devices at the Same Time
15. Receiving Serial Data from Two Devices at the Same Time
16. Setting Up Processing on Your Computer to Send and Receive Serial Data
Chapter 5 Simple Digital and Analog Input
1. Introduction
2. Using a Switch
3. Using a Switch Without External Resistors
4. Reliably Detecting the Closing of a Switch
5. Determining How Long a Switch Is Pressed
6. Reading a Keypad
7. Reading Analog Values
8. Changing the Range of Values
9. Reading More Than Six Analog Inputs
10. Displaying Voltages Up to 5V
11. Responding to Changes in Voltage
12. Measuring Voltages More Than 5V (Voltage Dividers)
Chapter 6 Getting Input from Sensors
1. Introduction
2. Detecting Movement
3. Detecting Light
4. Detecting Motion (Integrating Passive Infrared Detectors)
5. Measuring Distance
6. Measuring Distance Accurately
7. Detecting Vibration
8. Detecting Sound
9. Measuring Temperature
10. Reading RFID Tags
11. Tracking the Movement of a Dial
12. Tracking the Movement of More Than One Rotary Encoder
13. Tracking the Movement of a Dial in a Busy Sketch
14. Using a Mouse
15. Getting Location from a GPS
16. Detecting Rotation Using a Gyroscope
17. Detecting Direction
18. Getting Input from a Game Control Pad (PlayStation)
19. Reading Acceleration
Chapter 7 Visual Output
1. Introduction
2. Connecting and Using LEDs
3. Adjusting the Brightness of an LED
4. Driving High-Power LEDs
5. Adjusting the Color of an LED
6. Sequencing Multiple LEDs: Creating a Bar Graph
7. Sequencing Multiple LEDs: Making a Chase Sequence (Knight Rider)
8. Controlling an LED Matrix Using Multiplexing
9. Displaying Images on an LED Matrix
10. Controlling a Matrix of LEDs: Charlieplexing
11. Driving a 7-Segment LED Display
12. Driving Multidigit, 7-Segment LED Displays: Multiplexing
13. Driving Multidigit, 7-Segment LED Displays Using MAX7221 Shift Registers
14. Controlling an Array of LEDs by Using MAX72xx Shift Registers
15. Increasing the Number of Analog Outputs Using PWM Extender Chips (TLC5940)
16. Using an Analog Panel Meter As a Display
Chapter 8 Physical Output
1. Introduction
2. Controlling the Position of a Servo
3. Controlling One or Two Servos with a Potentiometer or Sensor
4. Controlling the Speed of Continuous Rotation Servos
5. Controlling Servos from the Serial Port
6. Driving a Brushless Motor (Using a Hobby Speed Controller)
7. Controlling Solenoids and Relays
8. Making an Object Vibrate
9. Driving a Brushed Motor Using a Transistor
10. Controlling the Direction of a Brushed Motor with an H-Bridge
11. Controlling the Direction and Speed of a Brushed Motor with an H-Bridge
12. Using Sensors to Control the Direction and Speed of Brushed Motors (L293 H-Bridge)
13. Driving a Bipolar Stepper Motor
14. Driving a Bipolar Stepper Motor (Using the EasyDriver Board)
15. Driving a Unipolar Stepper Motor (ULN2003A)
Chapter 9 Audio Output
1. Introduction
2. Playing Tones
3. Playing a Simple Melody
4. Generating More Than One Simultaneous Tone
5. Generating Audio Tones and Fading an LED
6. Playing a WAV File
7. Controlling MIDI
8. Making an Audio Synthesizer
Chapter 10 Remotely Controlling External Devices
1. Introduction
2. Responding to an Infrared Remote Control
3. Decoding Infrared Remote Control Signals
4. Imitating Remote Control Signals
5. Controlling a Digital Camera
6. Controlling AC Devices by Hacking a Remote Controlled Switch
Chapter 11 Using Displays
1. Introduction
2. Connecting and Using a Text LCD Display
3. Formatting Text
4. Turning the Cursor and Display On or Off
5. Scrolling Text
6. Displaying Special Symbols
7. Creating Custom Characters
8. Displaying Symbols Larger Than a Single Character
9. Displaying Pixels Smaller Than a Single Character
10. Connecting and Using a Graphical LCD Display
11. Creating Bitmaps for Use with a Graphical Display
12. Displaying Text on a TV
Chapter 12 Using Time and Dates
1. Introduction
2. Creating Delays
3. Using millis to Determine Duration
4. More Precisely Measuring the Duration of a Pulse
5. Using Arduino As a Clock
6. Creating an Alarm to Periodically Call a Function
7. Using a Real-Time Clock
Chapter 13 Communicating Using I2C and SPI
1. Introduction
2. Controlling an RGB LED Using the BlinkM Module
3. Using the Wii Nunchuck Accelerometer
4. Interfacing to an External Real-Time Clock
5. Adding External EEPROM Memory
6. Reading Temperature with a Digital Thermometer
7. Driving Four 7-Segment LEDs Using Only Two Wires
8. Integrating an I2C Port Expander
9. Driving Multidigit, 7-Segment Displays Using SPI
10. Communicating Between Two or More Arduino Boards
Chapter 14 Wireless Communication
1. Introduction
2. Sending Messages Using Low-Cost Wireless Modules
3. Connecting Arduino to a ZigBee or 802.15.4 Network
4. Sending a Message to a Particular XBee
5. Sending Sensor Data Between XBees
6. Activating an Actuator Connected to an XBee
Chapter 15 Ethernet and Networking
1. Introduction
2. Setting Up the Ethernet Shield
3. Obtaining Your IP Address Automatically
4. Resolving Hostnames to IP Addresses (DNS)
5. Requesting Data from a Web Server
6. Requesting Data from a Web Server Using XML
7. Setting Up an Arduino to Be a Web Server
8. Handling Incoming Web Requests
9. Handling Incoming Requests for Specific Pages
10. Using HTML to Format Web Server Responses
11. Serving Web Pages Using Forms (POST)
12. Serving Web Pages Containing Large Amounts of Data
13. Sending Twitter Messages
14. Sending and Receiving Simple Messages (UDP)
15. Getting the Time from an Internet Time Server
16. Monitoring Pachube Feeds
17. Sending Information to Pachube
Chapter 16 Using, Modifying, and Creating Libraries
1. Introduction
2. Using the Built-in Libraries
3. Installing Third-Party Libraries
4. Modifying a Library
5. Creating Your Own Library
6. Creating a Library That Uses Other Libraries
Chapter 17 Advanced Coding and Memory Handling
1. Introduction
2. Understanding the Arduino Build Process
3. Determining the Amount of Free and Used RAM
4. Storing and Retrieving Numeric Values in Program Memory
5. Storing and Retrieving Strings in Program Memory
6. Using #define and const Instead of Integers
7. Using Conditional Compilations
Chapter 18 Using the Controller Chip Hardware
1. Introduction
2. Storing Data in Permanent EEPROM Memory
3. Using Hardware Interrupts
4. Setting Timer Duration
5. Setting Timer Pulse Width and Duration
6. Creating a Pulse Generator
7. Changing a Timer’s PWM Frequency
8. Counting Pulses
9. Measuring Pulses More Accurately
10. Measuring Analog Values Quickly
11. Reducing Battery Drain
12. Setting Digital Pins Quickly

Appendix Electronic Components
1. Capacitor
2. Diode
3. Integrated Circuit
4. Keypad
5. LED
6. Motor (DC)
7. Optocoupler
8. Photocell (Photoresistor)
9. Piezo
10. Pot (Potentiometer)
11. Relay
12. Resistor
13. Solenoid
14. Speaker
15. Stepper Motor
16. Switch
17. Transistor
18. See Also
Appendix Using Schematic Diagrams and Data Sheets
1. How to Read a Data Sheet
2. Choosing and Using Transistors for Switching
Appendix Building and Connecting the Circuit
1. Using a Breadboard
2. Connecting and Using External Power Supplies and Batteries
3. Using Capacitors for Decoupling
4. Using Snubber Diodes with Inductive Loads
5. Working with AC Line Voltages
Appendix Tips on Troubleshooting Software Problems
1. Code That Won’t Compile
2. Code That Compiles but Does Not Work As Expected
3. Troubleshooting Interrelated Hardware/Software Problems
Appendix Tips on Troubleshooting Hardware Problems
1. Still Stuck?
Appendix Digital and Analog Pins
Appendix ASCII and Extended Character Sets
Colophon

Title:

Arduino Cookbook

By:

Michael Margolis

Publisher:

O'Reilly Media

Formats:

Print
Ebook
Safari Books Online

Print:

March 2011

Ebook:

March 2011

Pages:

662

Print ISBN:

978-0-596-80247-9

| ISBN 10:

0-596-80247-1

Ebook ISBN:

978-1-4493-0310-5

| ISBN 10:

1-4493-0310-2

Colophon

The animal on the cover of Arduino Cookbook is a toy rabbit. Mechanical toys like this one move by means of springs, gears, pulleys, levers, or other simple machines, powered by mechanical energy. Such toys have a long history, with ancient examples known from Greece, China, and the Arab world. Mechanical toy making flourished in early modern Europe. In the late 1400s, German inventor Karel Grod demonstrated flying wind-up toys. Prominent scientists of the day, including Leonardo da Vinci, Descartes, and Galileo Galilei, were noted for their work on mechanical toys. Da Vinci’s famed mechanical lion, built in 1509 for Louis XII, walked up to the king and tore open its chest to reveal a fleur-de-lis. The art of mechanical toy making is considered to have reached its pinnacle in the late eighteenth century, with the famed “automata” of the Swiss watchmaker Pierre Jaquet-Droz and his son Henri-Louis. Their human figures performed such lifelike actions as dipping a pen in an inkwell, writing full sentences, drawing sketches, and blowing eraser dust from the page. In the nineteenth century, European and American companies turned out popular clockwork toys that remain collectible today. Because these original toys, which had complicated works and elaborate decorations, were costly and time-consuming to make, they were reserved for the amusement of royalty or the entertainment of adults. Only since the late nineteenth century, with the appearance of mass production and cheap materials (tin, and later, plastic), have mechanical toys been considered playthings for children. These inexpensive moving novelties were popular for about a century, until battery-operated toys superseded them. The cover image is from the Dover Pictorial Archive. The cover font is Adobe ITC Garamond. The text font is Linotype Birka; the heading font is Adobe Myriad Condensed; and the code font is LucasFont’s TheSansMonoCondensed.

Description

Table of Contents

Product Details

About the Author

Colophon

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Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews

O'Reilly Media Arduino Cookbook

4.6

(based on 7 reviews)

100%

of respondents would recommend this to a friend.

Pros

Easy to understand (7)
Helpful examples (7)
Well-written (6)
Accurate (3)

Cons

Best Uses

Intermediate (6)
Novice (4)
Student (3)

- Reviewer Profile:
- Developer (5), Designer (3), Maker (3)

REVIEWS

Reviewed by 7 customers

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Displaying reviews 1-7

7/28/2011

(2 of 2 customers found this review helpful)

4.0

Useful for problem solving & inspiration

By Joshua

from Lynnwood, WA

About Me Developer, Maker

Pros

Concise
Easy to understand
Helpful examples

Cons

Best Uses

Intermediate
Novice

Comments about O'Reilly Media Arduino Cookbook:

As part of O'Reilly's Cookbok series, the Arduino Cookbook offers a wide selection of recipes for solving a variety of "problems" you might run into when programming the Arduino series of micro-controllers. The recipes range from basics like connecting your Arduino to a Mac or PC and formatting your code to more advanced topics like controlling arrays of LEDs and wireless communications.

In general the recipes are short and to the point. Each provides a code example and a reasonably detailed explanation for what is going on. This isn't the kind of book you'd read cover to cover, but it is an excellent reference to have on the shelf after you've walked through a few basic Arduino tutorials. Whenever you run into a "how do I?" question or just run out of ideas you should be able to get some guidance and maybe inspiration.

I found Chapter 6, Getting Input From Sensors, particularly interesting. With a separate example for each of the most common sensors it provides a good starting point for gathering and reacting to real-world conditions.

5/11/2011

(2 of 2 customers found this review helpful)

4.0

Recommended for any Geek

By Dumpy

from Sri Lanka

About Me Designer, Developer

Pros

Accurate
Easy to understand
Helpful examples
Well-written

Cons

Best Uses

Expert
Intermediate
Novice
Student

Comments about O'Reilly Media Arduino Cookbook:

I received this book from O'Reilly's Blogger Review Program.

The most important thing I noticed about this book is its ability to address an unimaginably broad audience. From a very beginner who venture into the arena of "geekhood" by testing LED patterns, to a well experienced engineer developing a ZigBee network.

The next thing I appreciate is the well organized Q & A approach. It saves time considerably. You can simply skip to the point of your interest and concentrate there.

While focusing to be easily understood by beginners the authors have not forgotten curious questions which might arise to an intermediate or advanced user. One example is the mentioning of what happened to the 'main' function in Arduino source codes as opposed to a typical code written in C language.

For the readers of eBook versions(.mobi in my case) there might be some misunderstanding due to the line separation of some comments. With a basic idea of commenting you can fix it.

Concluding the review, I seriously recommend this book to anybody wishing to learn Arduino irrespective of your level of knowledge or expertise.

4/18/2011

(1 of 2 customers found this review helpful)

5.0

Impressive book, easy to understand

By The Hun

from Groningen, Netherlands

Pros

Accurate
Easy to understand
Helpful examples
Well-written

Cons

Best Uses

Comments about O'Reilly Media Arduino Cookbook:

I am using this book as a study and reference guide for my students. I am using both the e-book (on my iPad) and the paper version. Lot's of my students use only the e-book version.

Being active in the computer industry more than 40 years, a book of this quality is published very seldom. Great job!

4/15/2011

5.0

The absolute reference!

By Rawbear

from Montreal

About Me Artist, Designer, Developer

Pros

Accurate
Complete
Concise
Easy to understand
Helpful examples
Varied
Well-written

Cons

None

Best Uses

Expert
Intermediate
Novice

Comments about O'Reilly Media Arduino Cookbook:

I'm doing a lot of electronics and the Arduino helps me interface the modules with computers and musical instruments. I use the book as a reference to figure better ways to accomplish various tasks. This book is extremely complete, with hundreds of examples (called "recipes"). It covers everything I can think of so far. For example, I was recently looking for an explanation on the use of "prescaler" bits. Sure enough, there was a concise reference to this subject.
I think that this book will be extremely useful for the beginner and intermediate Arduino fan. The experts will also find it invaluable as a reference.
I bought the e-book version.

3/28/2011

(2 of 2 customers found this review helpful)

5.0

Excellent Arduino Reference

By healthyfatboy

from Nashua, NH

About Me Engineer, Tinkerer

Pros

Easy to understand
Helpful examples
Well-written

Cons

A few minor errors

Best Uses

Hobbyist
Intermediate
Student

Comments about O'Reilly Media Arduino Cookbook:

If you have a little programming experience, want to learn the Arduino, and can read the instructions, this is the book for you. I found this to be a very thorough book in getting people new to Arduino up to speed and gives great examples on how to do just about anything you would want.

I have been learning the Arduino on my own using some tutorials online and found this to be an excellent compliment to what I have been learning. It goes over how to install the software on Windows and Mac and then helps you through the process of connecting up to your board. This can be found online but it's good to see some basics in there. Being extremely rusty on C/C++ programming, there were some nuances to C that I did not know and this book pointed those subtleties out. What I really found impressive in the beginning chapters was the advanced code used by C programmers to make things a little easier, if you happen to know advanced C. I'm in the process of learning C in addition to other languages and it's good to see what I will eventually get towards.

Further into the book, it starts to go through many different projects that can be done and gives you the basics of how to do them. You'll need to know a little about what you're doing but gives good references of where to go and look for more information just in case you need to learn a little more before you dive into your project. There's even a little section in the book where you learn how to interface a Playstation controller with the computer and then control Google Earth with it. Very cool! There's lots to learn from this book and it's definitely a worthwhile reference for anyone that is interesting in implementing projects using an Arduino.

As good as this book is, there are a few shortcomings. I found some minor mistakes in the book such as the output to the serial monitor being slightly different than what you would expect. e.g., when parsing out words separated by commas, it shows two of the three words separated but doesn't show the last word. If you code it up as shown, it does it just fine but if you are trying to check against the book, it will be "wrong" because the book is. Also, in the first chapter, it shows how to connect a small speaker to the Arudino and explains how to get a tone out of it but doesn't show how to do any of it in the example code given. The code has a minor omission that with the proper fix, should run the speaker just fine but if you're still learning, you'll have a difficult time figuring it out on your own.

All in all, if you have a little knowledge of C/C++ or Arudino, this will definitely be a great addition to your library. I highly recommend this book.

Disclaimer: This book was received as part of the O'Reilly Blogger Review Program. All the comments represent my thoughts and opinions and no other party.

3/22/2011

(1 of 1 customers found this review helpful)

4.0

Must have for lot's of Arduino fun

By JO3RI

from Belgium

About Me Designer, Developer, Maker, Sys Admin

Pros

Easy to understand
Helpful examples
Well-written

Cons

Best Uses

Intermediate
Novice

Comments about O'Reilly Media Arduino Cookbook:

I have downloaded this book for the kindle app on iPad and have already found a lot of solutions for problems. I even found solutions for problems I didn't knew I had. This book really is a must have, if you want to learn more on the arduino and it's programming language. Lot's of examples.

3/22/2011

(2 of 2 customers found this review helpful)

5.0

Review: Arduino Cookbook by Michael Marg

By Nick Charlton

from Plymouth, UK

About Me Developer, Maker

Pros

Easy to understand
Helpful examples
Well-written

Cons

Best Uses

Intermediate
Student

Comments about O'Reilly Media Arduino Cookbook:

For a while, I've wanted to play around with the Arduino; the open source embedded hardware that's stuck it's claws into everything from the arts, to personal projects and much more. Then, Arduino Cookbook came up on the O'Reilly Blogger Review Program, and I couldn't say no to having a pushed look into it.

I think the Arduino Cookbook will fill the void between books for which their intention is to cover lots of programming fundamentals, and books which only cover the Arduino boards with a cursory mention.

Like most of O'Reilly's cookbooks, they intend to provide a group of solutions to common problems. Sometimes they feel a little filled out; the thought that this recipe and solution are only in there to fill a gap often comes to mind. With my limited Arduino experience, I didn't see this as much as with others, as a somewhat experienced programmer, the programming Chapters did feel a little bit long, but what is there does cover issues where you'd rather have an instant answer than not understand why something is the case.

Overall, I was impressed by what it covered. Notably, serial communication, sensors, driving motors, I2C communication and networking stand out. These are all required for the few projects I have in mind.

If you have any experience with lower-level microcontrollers (I have a little bit of experience with C on Microchips' PIC24 chip), you'll find some more advanced stuff like interrupts and timers towards the end. This is a welcome addition.

The appendixes should be rather useful for most; they cover a basic introduction to electronics, but, as the author says himself, it's not a replacement for a proper book on the subject.

The author suggests that it would be good for a variety of readers, personally, I think it will slot rather nicely into the likes of most programmers - especially those who wish to add something physical to their projects.

If you are looking for something to help complete a project, or just get started with the Arduino quickly this is probably the best bet. You'll find plenty in here to get you going.

Displaying reviews 1-7

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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