How to use Optocoupler sensor module as RPM meter (Tachometer)
In this video, I'll explain how the optocoupler sensor works, how to read the signal, read the holes, and find a fun way to use it as an rpm counter or Tachometer.
So we make a DIY tachometer with arduino.
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/ @miliohm
Code on the video :
https://miliohm.com/build-tachometer-...
