Acknowledgments ……………………………………………………………………xix
Introduction…………………………………………………………………………….xx
Project 0: Getting Started………………………………………………………. 2
Part 1: LEDs
Project 1: Pushbutton-Controlled LED………………………………… 22
Project 2: Light Dimmer ………………………………………………………….. 28
Project 3: Bar Graph ………………………………………………………………. 34
Project 4: Disco Strobe Light ………………………………………………. 39
Project 5: Plant Monitor ………………………………………………………. 45
Project 6: Ghost Detector ……………………………………………………. 53
Part 2: Sound
Project 7: Arduino Melody …………………………………………………….. 64
Project 8: Memory Game …………………………………………………………. 69
Project 9: Secret Knock Lock ……………………………………………….. 78
Part 3: Servos
Project 10: Joystick-Controlled Laser ………………………………… 86
Project 11: Remote Control Servo ……………………………………….. 93
Part 4: LCDs
Project 12: LCD Screen Writer ………………………………………………. 102
Project 13: Weather Station ………………………………………………….. 110
Project 14: Fortune Teller……………………………………………………. 117
Project 15: Reaction Timer Game ………………………………………….. 124
Part 5: Numeric counters
Project 16: Electronic Die …………………………………………………….. 134
Project 17: Rocket Launcher …………………………………………………. 143
Part 6: Security
Project 18: Intruder Sensor …………………………………………………156
Project 19: Laser Trip Wire Alarm ………………………………………….163
Project 20: Sentry Gun ………………………………………………………….. 170
Project 21: Motion Sensor Alarm………………………………………….178
Project 22: Keypad Entry System ………………………………………….185
Project 23: Wireless ID Card Entry System ………………………….194
Part 7: Advanced
Project 24: Rainbow Light Show ………………………………………….. 208
Project 25: Build Your Own Arduino! ………………………………….. 220
Appendix A: Components ……………………………………………………….. 229
Appendix B: Arduino Pin Reference …………………………………….. 243
