Setup and test of a cheap eBay rev counter/ tachometer for use in aftermarket ECUs.

Описание к видео Setup and test of a cheap eBay rev counter/ tachometer for use in aftermarket ECUs.

I've been struggling for a while trying to interface a 12v pulsed output from a typical aftermarket ECU like speeduino or megasquirt, to the rev counter. I've decided to ditch the original moving coil meter type rev counter and replace it with a more modern stepper motor type designed specifically to accept pulsed outputs. I purchased this one on eBay for £16. To test it I used an Arduino Uno with some chat got written code to produce a pulsed output. This was then converted to 12v using an optoisolator circuit. The video shows cycling through the various pulsed frequencies.

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