Potentiometer tuning was a fiddly affair, but ... arduino, dispenser, ir sensor, label, NEMA-17, stepper ... Add in an IR sensor if you want the candle to be able to detect the presence ...

I recently had to build an infrared close proximity sensor that could tell if something was dropped in a parcel delivery drop box. After some searching, I. ... 0 comments on “ Arduino IR Proximity ...

The IR sensor array, which on the palm-sized vehicle consisted of just a handful of components, evolved into a PCB-backed bar nearly 0.5 meters wide. Potentiometer tuning was a fiddly affair, but ...

Build Your Own IR Windshield Rain Sensor. Dec. 21, 2017. ... For practical purposes, a 500-kΩ potentiometer would be ideal to select the proper value for the circuit.