Making a tachometer with arduino has never been so easy. I am not only going to show how you can make your own, but also will mention the pros and cons of a few types of RPM sensors, mainly the IR proximity sensor and the hall effect sensor.

Example codes:
– Simple tachometer (Serial):
– Tachometer with 0.96” OLED display:
– Tachometer with Nextion display:

Nextion display tachometer gauge (3.5” enhanced):

– Hall Effect Sensor A3144:
– Arduino nano:
– Nextion 3.5″ Enhanced:

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