Adventures in Raspberry Pi

Title Page......Page 5
Copyright Page......Page 6
Table of Contents......Page 11
 What Is the Raspberry Pi and What Can You Do With It?......Page 17
 What You Will Learn......Page 18
 How This Book Is Organised......Page 19
 The Companion Website......Page 20
 Conventions......Page 21
 Reaching Out......Page 22
Adventure 1 You Have a Raspberry Pi. Now What?......Page 23
 What Hardware Do You Need?......Page 24
 What Other Equipment Is Helpful?......Page 25
 Setting Up the Raspberry Pi......Page 27
  Downloading and Copying the Raspbian Operating System......Page 28
  Installing and Configuring the Software......Page 32
 Exploring the Desktop in Raspbian......Page 36
 Connecting to a Wi‐Fi Network......Page 37
 Backing Up an SD Card Image......Page 38
Adventure 2 Taking Command of Your Raspberry Pi......Page 41
 Exploring the Terminal......Page 43
 Commands for Navigating Through Your File System......Page 45
 Understanding sudo......Page 49
 Managing Files and Directories......Page 50
  Downloading and Installing Applications......Page 51
  Upgrading Your Apps......Page 52
 Editing Files......Page 53
 Using Shutdown and Restart Commands......Page 54
 Continuing Your Text Adventure......Page 55
Adventure 3 Creating Stories and Games with Scratch......Page 57
 Getting Started with Scratch......Page 58
  The Scratch Interface......Page 59
  A Quick Hello from Scratch Cat......Page 60
 Setting the Stage......Page 62
  Editing an Existing Sprite......Page 64
 Animating a Crazy Monkey......Page 66
  Creating Your Sprite and Stage......Page 72
  Setting the Start Position of the Adventurer Sprite......Page 73
  Creating Variables: Including Health Points for the Adventurer Sprite......Page 74
  Controlling the Direction and Movement of the Adventurer Sprite......Page 76
  Entering a Cave and Switching Backgrounds......Page 77
  Creating Health‐Point‐Stealing Sprites......Page 84
  Creating a Game Over Screen......Page 85
  Ideas for Improvements to Your Game......Page 87
Adventure 4 Programming Shapes with Turtle Graphics......Page 91
 Scratch Turtle Graphics......Page 92
  Using Pen Down and Pen Up......Page 93
  Drawing Simple Shapes......Page 94
  Using Variables Instead of Values......Page 96
  Changing the Size and Colour of the Pen......Page 97
  Using User Input to Determine the Number of Sides......Page 98
 Python Turtle Graphics......Page 100
  Using the Turtle Module in Python......Page 101
  The range Function......Page 107
  Other Python Turtle Module Commands......Page 108
 Some Super Spirals......Page 109
 Further Adventures with Python Turtle......Page 111
Adventure 5 Programming with Python......Page 115
  The IDLE Environment......Page 116
  Programming in Python: Using a Function......Page 117
 Using a Text Editor to Create a Code File......Page 120
 Using the Python time and random Modules......Page 122
 Python Text Adventure Game......Page 126
  Using Conditionals......Page 127
  Using a while Loop......Page 130
  Using a Variable for Health Points......Page 132
  Putting It All Together......Page 133
  Defining Functions......Page 134
  Creating a Main Game Loop......Page 136
 Continuing Your Python Adventure......Page 140
Adventure 6 Programming Minecraft Worlds on the Raspberry Pi......Page 143
 Getting Started with Minecraft Pi......Page 144
 Your First Minecraft Pi Python Program......Page 146
  Finding the Player’s Location......Page 148
  Changing the Player’s Location......Page 149
  Placing a Block......Page 150
  Placing Multiple Blocks......Page 152
  Types of Blocks......Page 154
 Creating a TNT Chain Reaction......Page 155
 Creating a Diamond Transporter......Page 157
 Sharing and Cloning Minecraft Pi Programs......Page 160
Adventure 7 Coding Music with Sonic Pi......Page 163
 Getting Started with Sonic Pi......Page 164
 The Sonic Pi Interface......Page 165
 Creating Your First Sounds with Sonic Pi......Page 167
  Twinkle Twinkle Little Star......Page 170
  Repeating Lines in a Loop......Page 172
  Using Different Synthesizer Sounds......Page 174
  Using Prerecorded Samples......Page 175
  Using “rand” to Play Random Notes......Page 177
  Using Algorithms......Page 178
  Adding Effects......Page 180
  Making a Recording of Your Music......Page 181
 Further Adventures with Sonic Pi......Page 182
Adventure 8 Using the GPIO Pins on the Raspberry Pi......Page 185
 Using a Raspberry Pi GPIO Pin Layout Diagram......Page 186
 Electronics Basics......Page 189
 Using a Python Library to Control GPIO......Page 191
 Making an LED Blink......Page 192
  Creating the LEDblink Python Code......Page 193
  Connecting the LEDblink Components......Page 194
  Running LEDblink.py in IDLE......Page 196
  Creating the buttonLED Python Code......Page 197
  Connecting the buttonLED Components......Page 198
  Running buttonLED.py in IDLE......Page 199
 Using a PIR Motion Sensor to Trigger a Sound......Page 200
  Creating the Motion‐Sensing Python Code......Page 201
  Connecting the PIRmotion Components......Page 202
  Running PIRmotion.py in IDLE......Page 203
 The Marshmallow Challenge......Page 204
  Creating the Marshmallow Button......Page 205
  Mapping Marshmallow Input to a Keyboard Key......Page 207
  Scratch Marshmallow Game......Page 208
 Further Adventures with GPIO Pins......Page 211
Adventure 9 Experimenting with Cameras and HATs......Page 213
  Connecting the Camera to Your Raspberry Pi......Page 214
  Programming the Picamera with Python......Page 216
 Creating a Time‐Lapse Photography Program......Page 217
  Mounting Your Camera......Page 219
  Making a Movie of Your Images......Page 220
 Getting Started with the Explorer HAT Pro......Page 222
  Downloading and Installing the Explorer HAT Library......Page 223
  Programming the LEDs......Page 225
  Programming the Touch Pads......Page 227
 Creating an Explorer HAT Pro Disco Trigger Trap......Page 228
  Creating the Disco Trigger Trap Python Code......Page 229
 Getting Started with the Sense HAT......Page 231
  Programming the Sensors to Find Out the Current Temperature......Page 233
  Creating Pixel Art......Page 234
 Creating a Sense HAT Desk Thermometer......Page 236
 Further Adventures with Cameras and HATs......Page 238
Chapter 10 The Big Adventure: Building a Raspberry Pi Jukebox......Page 241
 An Overview of the Jukebox Project......Page 242
 What You Will Need......Page 243
  Preparing the LCD Screen by Adding Headers......Page 244
  Mounting the LCD Screen and Wiring Up the Breadboard......Page 245
  Adding Scripts to Drive the LCD Screen......Page 248
  Installing a Media Player and Getting Music Files......Page 249
  Writing a Jukebox Python Program......Page 252
  Connecting the Buttons......Page 256
  Adapting Your Jukebox Program to Include GPIO Buttons......Page 258
 Part Four: Displaying Jukebox Information on the LCD Screen......Page 260
 Finishing Up......Page 265
 Websites......Page 267
 Clubs......Page 269
 Videos......Page 270
 Books and Magazines......Page 271
Glossary......Page 273
Index......Page 279
EULA......Page 291