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Hacking Raspberry Pi

By Timothy L. Warner
Published Oct 1, 2013 by Que.

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Description

Sample Content

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Description

Copyright 2014
Dimensions: 7" x 9-1/8"
Pages: 384
Edition: 1st

eBook
ISBN-10: 0-13-347661-8
ISBN-13: 978-0-13-347661-3

DIY hardware hacking...easy as Pi ®!

Raspberry Pi is taking off like a rocket! You can use this amazing, dirt-cheap, credit card-sized computer to learn powerful hardware hacking techniques as you build incredibly creative and useful projects! This complete, full-color guide requires absolutely no experience with either hardware hacking or computer programming. Colorful photos guide you through each project, and the step-by-step instructions are stunningly clear and easy!

1. Start with the absolute basics:

Discover why millions of people are so passionate about the Pi!
Tour the hardware, including storage, connections, and networking
Install and run Raspbian, Raspberry Pi’s Linux-based operating system
Manage devices and configuration files
Network Raspberry Pi and add Wi-Fi
Program Raspberry Pi using Python, Scratch, XHTML, PHP, and MySQL

2. Next, build all these great projects:

Media Center
Retro Console Video Game Station
Minecraft Server
Web Server
Portable Webcam
Security & Privacy Device

3. Then, master all these cutting-edge techniques:

Overclock Raspberry Pi for better performance
Link Raspberry Pi to the Arduino and Arduino clones, including the AlaMode and the Gertboard
Use the Pi to build electronics prototypes using a breadboard

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Sample Content

Table of Contents

Introduction 1

What’s in This Book 2

Who Can Use This Book 4

How to Use This Book 5

Task: This Is a Task 5

There’s More Online… 5

PART I HARDWARE FOUNDATIONS

Chapter 1 What Is the Raspberry Pi? 7

Why the Pi? 8

Hardware Versions 9

Is the Raspberry Pi Open Source? 14

Open Source Licenses 15

Open Source and the Raspberry Pi 15

How Can I Purchase a Raspberry Pi? 16

Chapter 2 Hardware Components Quick Start 17

Understanding Pi Hardware Terminology 17

The Hidden Cost of Owning a Raspberry Pi 20

A 5V Power Supply 21

SD Card 23

Powered USB Hub 24

Ethernet Cable 24

Monitor 25

Cables 25

USB Keyboard and Mouse 26

A Tour of the Model B Board 27

Networking 27

Video and Audio 27

Storage 29

Power/Status Information 29

Camera 30

Processing 31

Expansion 31

Next Steps 32

Chapter 3 A Tour of Raspberry Pi Peripheral Devices 33

Circuit Prototyping Equipment 34

Single-Board Microcontrollers 37

The Gertboard 38

Single-Board Computers 40

Relevant Technician Tools 41

Task: Check Raspberry Pi Voltage with a Multimeter 41

Raspberry Pi Starter Kits 43

Next Steps 45

PART II SOFTWARE FOUNDATIONS

Chapter 4 Installing and Configuring an Operating System 47

Common Operating Systems 49

Understanding Linux 49

Linux and Raspberry Pi 52

The Kernel and Firmware 53

Raspberry Pi’s Other Operating Systems 54

Installing Raspbian on Your Raspberry Pi 55

Task: Creating a Raspbian SD Card in Windows 57

Task: Creating a Raspbian SD Card in OS X 58

Task: Creating a Raspbian SD Card in Linux 60

An All-in-One Solution 63

Task: Installing an OS on Your Raspberry Pi Using NOOBS 64

Testing Your New Raspbian Image 65

Chapter 5 Debian Linux Fundamentals—Terminal 67

Baby Steps 67

Essential Terminal Commands 69

startx 69

pwd 70

ls 71

cd 72

sudo 73

passwd 74

nano 74

man 75

shutdown 76

Updating Your Software 77

Updating Raspbian 78

Updating the Pi Firmware 79

Revisiting Raspi-Config 80

Expand Filesystem 81

Change User Password 81

Enable Boot to Desktop 82

Internationalisation Options 82

Enable Camera 82

Add to Rastrack 83

Overclocking 83

Advanced Options 84

Raspi-Config Under the Hood 84

Next Steps 85

Chapter 6 Debian Linux Fundamentals—Graphical User Interface 87

LXDE—The Desktop Environment 87

Starting and Exiting LXDE 88

Task: Using Raspi-Config to Adjust Boot Behavior 88

Touring the LXDE Interface 89

Delving into the Main Menu 92

Installing, Updating, and Removing Software 94

Accessing the Pi Store 95

Task: Downloading a Free App from the Pi Store 97

Tweaking the LXDE UI 98

Task: Change the Desktop Background 98

Task: Customize the LXTerminal 99

Task: Customize the LXPanel 100

Openbox 100

Editing Configuration Files 101

Chapter 7 Networking Raspberry Pi 103

Basic Networking Concepts 103

Configuring Wired Ethernet 104

Task: Setting a Static IP Address on Your Raspberry Pi 106

Configuring Wireless Ethernet 107

Task: Setting Up Wi-Fi on Your Pi 109

Configuring “Headless” Raspberry Pi 110

Secure Shell (SSH) 112

Task: Using SSH to Connect to a Raspberry Pi Remotely 113

Virtual Network Computing (VNC) 114

Task: Using VNC to Connect to the Raspberry Pi 115

Task: Configure Your Pi to Start VNC Server Automatically 117

On Browsing the Web with the Pi 118

Chapter 8 Programming Raspberry Pi with Scratch—Beginnings 121

Technical Aspects of Scratch 122

Scratch Version Issues 122

The Scratch Community 123

Getting Comfortable with the Scratch Interface 124

About Blocks 127

Crafting a (Very) Simple Scratch Application 129

Task: Creating a Basic Scratch App 130

The PicoBoard 132

Obtaining a PicoBoard? 134

Using a PicoBoard in Scratch 134

Task: Using the PicoBoard in Scratch 134

Chapter 9 Programming Raspberry Pi with Scratch—Next Steps 137

Begin with the End in Mind 137

Let’s Build the Game! 139

Task: Setting Up the Game Screens 140

Task: Setting Up the Scratch Cat 143

Setting Up the First Ball 144

Setting Up the Second and Third Balls 146

Debugging and Troubleshooting 147

Uploading Your Project 149

Task: Share Your Scratch Project 149

Remixing 151

Task: Create a Remix 151

Chapter 10 Programming Raspberry Pi with Python—Beginnings 153

Checking Out the Python Environment 154

Interacting with the Python 3 Interpreter 156

Exiting the Interpreter 157

Getting Online Help 157

Writing Your First Python Program 158

Task: Creating Your First Python Script 159

Running Python Scripts 161

Task: Running Python Scripts (command line) 161

Task: Running Python Scripts (IDLE) 161

Broadening Your Python Horizons 163

Chapter 11 Programming Raspberry Pi with Python—Next Steps 165

Getting Comfortable with IDLE 165

Task: Creating a New Python Script File 168

Writing a Simple Game 168

Delving into a Bit More Detail 171

Variables 171

Type Casting 171

Concatenation 173

Modules 173

Task: Loading and then Updating the GPIO Module in Python 3 176

Where Do You Go from Here? 177

PART III BASIC RASPBERRY PI PROJECTS

Chapter 12 Raspberry Pi Media Center 179

A Bit o’ History 180

But Will It Blend? 181

Introducing Raspbmc 182

Task: Installing Raspbmc Under Windows 182

Task: Installing Raspbmc Under OS X 183

Configuring Raspbmc 184

Getting Your Remote Control Working 186

Task: Controlling Your Raspbmc Box from iOS 186

Task: Controlling Your Raspbmc Box from a Web Browser 189

Task: Configuring a GPIO-based IR Receiver 190

Transferring Content to Your Pi 192

Task: Uploading Media Content to Raspberry Pi 192

Scraping Your Media 194

Task: Configuring XBMC Media Detection 194

Playing Your Content 196

Installing Add-Ons 197

Chapter 13 Raspberry Pi Retro Game Station 199

A Word About Console Video Game Emulation 200

Installing RetroPie 200

Task: Setting Up RetroPie 201

Transferring ROMs to RetroPie 203

Task: Transferring ROMs to Your Raspberry Pi 204

Setting Up Your Controls 206

Task: Configure RetroPie Joystick Control Mappings 208

Playing Your Games 209

Installing Useful Add-Ons 210

Task: Install ES-Scraper 211

In Search of the Perfect Joystick 212

Chapter 14 Raspberry Pi Minecraft Server 217

Installing Minecraft Pi 219

Task: Installing Minecraft Pi 219

Accessing the Python API 221

Task: Loading the Minecraft Python Libraries 222

Task: Making Your Player Jump High! 224

Task: Create a Diamond Floor 225

Building a Minecraft Server 226

Task: Installing Java and the Minecraft Server 227

Administering a Minecraft Server 230

Minecraft Plugins 232

Chapter 15 Raspberry Pi Web Server 233

What Is the LAMP Stack? 234

Installing Your Web Server 235

Task: Installing the LAMP Stack on Raspberry Pi 236

Task: Verifying PHP Configuration 237

Task: Verifying MySQL Installation 239

Tweaking Up Your Web Server Settings 240

Transferring Content to Your Web Server 240

Task: Using SFTP to Transfer Content to Your Pi 241

Task: Install and Test FTP on Your Raspberry Pi 243

Setting Up phpMyAdmin 243

Task: Installing phpMyAdmin 244

Setting Up Joomla 245

Task: Installing Joomla on Your Raspberry Pi 246

Putting Your Web Server on the Public Internet 249

Task: Making Your Raspberry Pi Publicly Accessible by Using No-IP 250

Chapter 16 Raspberry Pi Portable Webcam 253

About the Raspberry Pi Camera Board 253

Installing and Configuring the Raspberry Pi Camera Board 256

Task: Preparing the Raspberry Pi for the Camera Board 256

Task: Installing the Raspberry Pi Camera Board 257

Using the Camera Board 259

Capturing Still Pictures 259

Recording Video with the Camera Board 263

Task: Encoding a raspivid Video File 265

Using a Third-Party USB Webcam 266

Task: Configuring a Third-Party USB Webcam 267

Setting Up Your Webcam 269

Task: Setting Up a Time-Lapse Webcam 270

Adding a Rechargeable Battery Pack to Your Pi Camera 273

Python and Your Webcam 274

Task: Setting up SimpleCV 274

Chapter 17 Raspberry Pi Security and Privacy Device 277

Encrypting Your Internet Connection with a VPN 277

Browsing Where You Want via a Proxy Server 278

Building Your Raspberry Pi VPN Gateway 280

Task: Creating Your Hamachi VPN 281

Task: Connecting to Your Hamachi VPN from Your Desktop Computer 283

Task: Installing Hamachi Client on Your Raspberry Pi 284

Building Your Raspberry Pi Proxy Server 286

Task: Installing and Configuring Privoxy Raspberry Pi 286

Testing the Configuration 287

Task: Pointing Your Workstation Computer at Your Pi Proxy 289

Speaking of Geolocation 292

Task: Adding Your Raspberry Pi to the Rastrack Database 294

Building a Raspberry Pi Tor Proxy 294

PART IV HACKING THE RASPBERRY PI

Chapter 18 Raspberry Pi Overclocking 299

What Is Overclocking? 299

Warranty Implications of Overclocking 300

Overclocking Your Pi 302

The Raspi-Config Method 302

Task: Verifying Your Pi’s CPU, Voltage, and Temperature Status 303

The Manual Method 304

Benchmarking Your Pi 305

Task: Installing and Running nbench 306

Adjusting the Memory Split on Your Pi 307

Task: Tweaking Memory Split with Raspi-Config 308

Tweaking Memory Split by Hand 309

A Historical Footnote 309

Various and Sundry Performance Tweaks 311

Chapter 19 Raspberry Pi and Arduino 315

Introducing the Arduino 315

Digging into the Arduino Uno 319

Connecting the Arduino and the Raspberry Pi 321

Connecting the Raspberry Pi GPIO Pins to the Arduino Serial Pins 322

Connecting the Raspberry Pi GPIO Pins to the Arduino I2C 322

Connecting the Raspberry Pi to the Arduino via USB 322

Connecting the Raspberry Pi to the Arduino via a Shield or Bridge Board 322

Connecting the Raspberry Pi to an Arduino Clone 323

Understanding the Arduino Development Workflow 323

Task: Install and Configure Arduino IDE on the Raspberry Pi 324

Task: Running the “Blink” Sample Sketch 327

Fading an LED 330

Task: Running the Fade Sketch 331

Using the AlaMode 332

Task: Getting the AlaMode Up and Running 333

Chapter 20 Raspberry Pi and the Gertboard 337

Anatomy of the GPIO 339

Connecting Your Gertboard and Raspberry Pi 341

Installing the Testing Software 343

Task: Enabling SPI on Your Raspberry Pi 344

Task: Installing the Python Gertboard Test Suite 345

Testing the LEDs 346

Testing Input/Output 349

A Couple Quick Breadboarding Exercises 350

Accessing the GPIO Pins Directly 350

Task: Lighting an LED Directly from the GPIO 351

Accessing the GPIO Pins via the Pi Cobbler 353

Programming the Atmel Microcontroller 354

Task: Preparing Your Arduino Environment 355

Final Thoughts, and Thank You 357

Index 359

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