Raspberry Pi Projects

Introduction 1 A History of Making 1 Consumer Computing 2 Why Everyone Should Learn About Computing 2 Enter the Raspberry Pi 3 About This Book 4 How to Use Th is Book 4 The Future 6 Part I: Getting Started with the Raspberry Pi CHAPTER 1 Getting Your Raspberry Pi Up and Running 9 The Operating System 10 Connecting Your Raspberry Pi 16 The Boot Process 25 Starting the Graphical Desktop 26 Starting a Terminal under X 26 Troubleshooting 26 Let the Fun Begin! 28 CHAPTER 2 Introductory Software Project: The Insult Generator 29 Running Your First Python Program 30 Saving Your Program 33 Generating an Insult 36 Insult Your Friends by Name! 39 Create a Stream of Insults! 41 Putting It All Together 45 Part II: Software Projects CHAPTER 3 Tic-Tac-Toe 49 Errors 50 Making a Start 51 A Two-Player Game 55 Getting the Computer to Play 59 Over to You 70 CHAPTER 4 Here's the News 71 Early Teleprompters 72 The Pi Prompter 73 What You Need to Do 73 A Step Closer to a Usable Program 78 Your Final Pi Prompter Code 84 The Physical Setup for Your Prompter 89 Over to You 92 CHAPTER 5 Ping 93 Early Commercial Products 94 The Ping Game 94 Improving the Ping Game 99 A Single-Player Game 104 A Two-Player Game 111 Over to You 118 CHAPTER 6 Pie Man 121 The Pie Man Game 122 Gather Your Resources 123 Setting the Stage 127 The Game Action 133 Drawing the Screen 141 The Final Function 144 Over to You 150 CHAPTER 7 Minecraft Maze Maker 151 Installing Minecraft 152 Starting Minecraft 153 Playing Minecraft 154 Preparing for Python 156 Using the Minecraft Module 156 Over to You 174 Part III: Hardware Projects CHAPTER 8 Colour Snap 177 Implementing the Game 178 The Software for Testing the Game 193 The Software for the Game 196 Over to You 202 CHAPTER 9 Test Your Reactions 203 Welcome to the Embedded World! 204 Obtaining Components 205 Setting up PiFace Digital 206 Connecting PiFace Digital 210 Using the Emulator 210 Interfacing with Python 211 The Reaction Timer 214 What Will You Interface? 226 CHAPTER 10 The Twittering Toy 227 Hacking the Toy 228 Making It Talk 232 Making It Move 235 Connecting to Twitter 239 Putting It All Together 245 Wrapping Up 248 CHAPTER 11 Disco Lights 251 Defining Your Sequence 252 Getting the Code to Do More 254 A Small Detour into Theory 256 Designing the Sequencer 257 Implementing the Sequencer 258 The Lights 265 Using Longer Strip Lights 268 Making the Lights Move 269 Designing the Circuit 270 Building the Circuit 273 Running the Circuit 273 Over to You 274 CHAPTER 12 Door Lock 275 The System Overview 276 Safety-Critical Systems 276 The Door Lock Hardware 277 The Initial High-Level Software Simulation 278 The Output Block 281 The Input Block 283 The Authentication Block 284 Unlocking Doors Without Touching 286 Testing the Program and Fitting the Lock 292 Networking Multiple Doors 293 Over to You 294 The Art of Programming 295 CHAPTER 13 Home Automation 297 The Internet Of Things 298 Project 1: How to Create a Motion Sensor and Door Switch 298 Project 2: How to Monitor Your Home with a Webcam 305 Project 3: How to Make a Temperature Gauge 312 Project 4: How to Send an E-mail Alert 317 Project 5: How to Send an E-mail Using a Wireless Remote 324 Over to You 331 CHAPTER 14 Computer-Controlled Slot Car Racing 333 Obtaining a Slot Car Racer 334 Hacking Your Slot Car Racer 334 Getting the Player Input 336 The Software 346 The Game 348 Over to You 354 CHAPTER 15 Facebook-Enabled Roto-Sketch 355 The Concept 356 Rotary Encoder Types 356 The Encoder Output 357 Posting to Facebook 366 The Final Roto-Sketch Program 369 Creating a Symmetrical Pattern 375 Over to You 381 CHAPTER 16 The Pendulum Pi, a Harmonograph 383 The Concept 385 The Hall Effect 385 Enter the Arduino 387 Putting It Together 388 Programming the Arduino 399 Programming the Pi 412 Using the Pendulum Pi 418 Over to You 419 CHAPTER 17 The Techno-Bird Box, a Wildlife Monitor 421 Building Invisible Light Beam Sensors 423 Mounting the Sensors 427 Recording Activity to a File 431 Processing the Data 442 Dealing with Sensor Noise 448 Drawing a Graph 454 Putting the Nest Box into Service 458 Over to You 458 The Possibilities Are Endless 460 Index 461