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This Arduino based little digital tachometer was originally created for counting the speed of turntables and fidget spinners. There is another application to consider – a rear wheel tachometer for ...
It’s something [mircemk] demonstrates, with an Arduino-powered magnetic field strength meter that uses a UGN 3503U Hall effect device.
A third Hall effect sensor is used to measure a throttle stick positioned on the side of the box. An Arduino micro reads the sensors and converts the analog signal to USB.