Infrared (IR) sensors are commonly used for a wide range of applications, including proximity detection, object tracking, and obstacle avoidance. This project presents a PCB design that combines an IR ...

SharpServo is a small Arduino program that pairs servo control to the Sharp IR range sensors, and manages the voltage issues typical for the Sharp IR packages.

This has neither. The black PCB seen to the right of the robot is an IR reflectance sensor. It shines an IR led at the floor and picks up what reflects back.

We’ll demonstrate this sensor using a single resistor and a multimeter. Sharp GP2Y0D02 fixed 80cm IR proximity detector (Digikey # 425-2064-ND, $14.38). Datasheet (PDF).