rpm-counter-protrex

Fidget Spinner RPM Counter

 How to make a Fidget Spinner RPM counter with Hall-effect sensor.   Using Hall-Effect Sensor we can measure the speed of rotation. I used Hall-Effect Sensor – a3144.RPM (Revolutions per minute) – the number of revolutions per minute. Revolutions per minute – a unit of measurement of rotational speed: the number of complete rotations made[…]