Raspberry Pi User Guide

Raspberry Pi User Guide, 4th Edition is the "unofficial official" guide to everything Raspberry Pi 3. Written by the Pi's creator and a leading Pi guru, this book goes straight to the source to bring you the ultimate Raspberry Pi 3 manual. This new fourth edition has been updated to cover the Raspberry Pi 3 board and software, with detailed discussion on its wide array of configurations, languages, and applications. You'll learn how to take full advantage of the mighty Pi's full capabilities, and then expand those capabilities even more with add-on technologies. You'll write productivity and multimedia programs, and learn flexible programming languages that allow you to shape your Raspberry Pi into whatever you want it to be. If you're ready to jump right in, this book gets you started with clear, step-by-step instruction from software installation to system customization.

The Raspberry Pi's tremendous popularity has spawned an entire industry of add-ons, parts, hacks, ideas, and inventions. The movement is growing, and pushing the boundaries of possibility along with it—are you ready to be a part of it? This book is your ideal companion for claiming your piece of the Pi.

• Get all set up with software, and connect to other devices
• Understand Linux System Admin nomenclature and conventions
• Write your own programs using Python and Scratch
• Extend the Pi's capabilities with add-ons like Wi-Fi dongles, a touch screen, and more

The credit-card sized Raspberry Pi has become a global phenomenon. Created by the Raspberry Pi Foundation to get kids interested in programming, this tiny computer kick-started a movement of tinkerers, thinkers, experimenters, and inventors. Where will your Raspberry Pi 3 take you? The Raspberry Pi User Guide, 3rd Edition is your ultimate roadmap to discovery.

Eben Upton is the co-creator of the Raspberry Pi board, and the co-founder of the UK nonprofit Raspberry Pi Foundation.

Gareth Halfacree is a veteran tech author and an expert on the Raspberry Pi.

Introduction 1

Programming is Fun! 1

A Bit of History 3

So What Can You Do with the Raspberry Pi? 8

Part I The Board 11

Chapter 1 Meet the Raspberry Pi 13

A Trip Around the Board 13

Model A/B 16

Model A+/B+ 16

Raspberry Pi 2 17

Raspberry Pi 3 18

Raspberry Pi Zero 19

A Bit of Background 20

ARM Versus x86 20

Windows Versus Linux 21

Chapter 2 Getting Started with the Raspberry Pi 23

Connecting a Display 23

Composite Video 24

HDMI Video 25

DSI Video 26

Connecting Audio 26

Connecting a Keyboard and Mouse 27

Installing NOOBS on an SD Card 29

Connecting External Storage 30

Connecting the Network 31

Wired Networking 32

Wireless Networking 33

Connecting Power 34

Installing the Operating System 35

Installing Using NOOBS 35

Installing Manually 37

Connecting Bluetooth Devices 41

Chapter 3 Linux System Administration 43

Linux: An Overview 43

Linux Basics 46

Introducing Raspbian 46

About Raspbian’s Parent, Debian 51

Alternatives to Raspbian 51

Using External Storage Devices 52

Creating a New User Account 54

File System Layout 54

Logical Layout 55

Physical Layout 57

Installing and Uninstalling Software 57

Managing Software Graphically 57

Managing Software at the Command Line 58

Finding the Software You Want 60

Installing Software 61

Uninstalling Software 62

Upgrading Software 62

Shutting the Pi Down Safely 63

Chapter 4 Troubleshooting 65

Keyboard and Mouse Diagnostics 65

Power Diagnostics 66

Display Diagnostics 68

Boot Diagnostics 69

Network Diagnostics 69

Chapter 5 Network Configuration 73

Wired Networking 73

Connecting to a Wired Network via the GUI 73

Connecting to a Wired Network via the Console 75

Testing Your Connectivity 76

Wireless Networking 76

Connecting to a Wireless Network via the GUI 77

Connecting to a Wireless Network via the Console 79

Chapter 6 The Raspberry Pi Configuration Tool 85

Running the Tool 85

The System Tab 86

Filesystem 86

Password 87

Hostname 88

Boot 88

Auto Login 88

Network at Boot 89

Overscan 89

Rastrack 89

The Interfaces Tab 90

Camera 91

SSH 91

SPI 91

I2C 91

Serial 91

1-Wire 92

Performance 92

Overclock 92

GPU Memory 94

Localisation 94

Locale 94

Timezone 96

Keyboard 96

Chapter 7 Advanced Raspberry Pi Configuration 99

Editing Configuration Files via NOOBS 99

Hardware Settings: config.txt 101

Modifying the Display 102

Boot Options 105

Overclocking the Raspberry Pi 106

Disabling L2 Cache 110

Enabling Test Mode 110

Memory Partitioning 111

Software Settings: cmdline.txt 112

Part II Building a Media Centre or Productivity Machine 115

Chapter 8 The Pi as a Home Theatre PC 117

Playing Music at the Console 117

Dedicated HTPC with OSMC 119

Streaming Internet Media 122

Streaming Local Network Media 123

Configuring OSMC 124

Chapter 9 The Pi as a Productivity Machine 127

Using Cloud-Based Apps 127

Using LibreOffice 130

Image Editing with the Gimp 131

Part III Programming the Pi 135

Chapter 10 An Introduction to Scratch 137

Introducing Scratch 137

Example 1: Hello World 138

Example 2: Animation and Sound 141

Example 3: A Simple Game 144

Interfacing Scratch with Hardware .149

Further Reading 152

Chapter 11 An Introduction to Python 153

Introducing Python 153

Example 1: Hello World 154

Example 2: Comments, Inputs, Variables, and Loops 159

Example 3: Gaming with pygame 164

Example 4: Python and Networking 172

Further Reading 179

Chapter 12 Minecraft Pi Edition 181

Introducing Minecraft Pi Edition 181

Installing Minecraft 182

Running Minecraft 182

Exploration 184

Hacking Minecraft 185

Part IV Hardware Hacking 191

Chapter 13 Learning to Hack Hardware 193

Electronic Equipment 193

Reading Resistor Colour Codes 195

Sourcing Components 197

Online Sources 197

Offline Sources 198

Hobby Specialists 199

Moving Up from the Breadboard 199

A Brief Guide to Soldering 202

Chapter 14 The GPIO Port 207

Identifying Your Board Revision 207

GPIO Pinout Diagrams 208

GPIO Features 210

UART Serial Bus 211

I²C Bus 211

SPI Bus 211

Using the GPIO Port in Python 212

GPIO Output: Flashing an LED 212

GPIO Input: Reading a Button 216

Soldering the Raspberry Pi Zero’s GPIO Header 220

Chapter 15 The Raspberry Pi Camera Module 223

Why Use the Camera Module? 224

Choosing a Camera Module 224

Installing the Camera Module 225

Enabling Camera Mode 228

Capturing Stills 230

Recording Video 232

Command-Line Time-Lapse Photography 233

Chapter 16 Add-On Hardware 237

Official Raspberry Pi Case 238

Installation 239

Raspberry Pi 7" Touchscreen Display 240

Installation 241

Sense HAT 244

Installation 245

Programming the Sense HAT 247

Part V Appendixes 251

Appendix A Python Recipes 253

Raspberry Snake (Chapter 11, Example 3) 253

IRC User List (Chapter 11, Example 4) 255

GPIO Input and Output (Chapter 14) 257

Appendix B Raspberry Pi Camera Module Quick Reference 259

Shared Options 259

Raspistill Options 264

Raspivid Options 266

Appendix C HDMI Display Modes 269

Index 277

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