Introduction
Primer

LEDs
Project 1: Blinking an LED
Project 2: Pushbutton LED Flashlight
Project 3: LED Dimmer Switch
Project 4: A Graphical User Interface for a Multicolor LED
Project 5: Rainbow Light Strip

Displays
Project 6: An LCD Reminder
Project 7: Mini Weather Forecaster
Project 8: Pong with a Sense Hat

Sensors
Project 9: All-In-One Weather Sensor Station
Project 10: Intruder Alarm with Email Notifications
Project 11: Gas and Smoke Alarm
Project 12: Temperature and Humidity Data Logger

Cameras
Project 13: Burglar Detector with Photo Capture
Project 14: Home Surveillance Camera

Web Applications
Project 15: Building Your First Website
Project 16: Connecting Your Electronics to the Web
Project 17: Internet of Things Control Center with Node-Red

Games and Toys
Project 18: Digital Drum Set
Project 19: Make a Game in Scratch: Hungry Monkey
Project 20: Wi-Fi Remote-Controlled Robot

Appendix A: Raspberry Pi GPIO Pin Guide
Appendix B: Decoding Resistor Values