Apart from the Arduino UNO, the circuit consists of two more ... sensor drives an infrared emitter to illuminate an object, then looks for the reflectance from the object to detect its close proximity ...

He used a stepper motor to rotate the object being scanned, and an Arduino for ... has released the code, and it should be easy enough to repurpose it with a more accurate sensor.

The robot uses a whopping 32 IR sensors to follow a black line across a concrete workshop floor, adjusting its path using a steering motor salvaged from a power wheelchair. An Arduino Mega Pro ...