PrefaceHere is a list of sensors that we have found useful for various projects. Each tutorial for a sensor gives an explanation of what it is, potential uses, and sample code. GP2Y0D810 Infrared Sensor GP2Y0A02YK Infrared Sensor in Real Distance Ping))) Ultrasonic Sensor HC-SR04 Ultrasonic Distance Sensor PIR Sensor (HC-SR501) Linksprite JPEG Camera Adafruit Ultimate GPS Breakout ArduIMU Joystick Book traversal links for Sensors ‹ NPN and PNP Transistors Up GP2Y0D810 Infrared Sensor › Printer-friendly version Disqus View the discussion thread.