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.

In the case of his space heater an Arduino was used to record and later retransmit the “power on” IR code to the heater ... Maybe he will add a temperature sensor someday so it doesn’t ...