Quote:
Originally Posted by Zendalar
I had a broken tach, electrics busted. Removed all of them and found out that the "meter" part is actually a 10mA current meter. I made a prototype from Arduino microcontroller that gets a pulse from from ignition unit and outputs "current" to the tachometer and voila, it works. Just needed some calibration stuff, but now its fine. No more malfunctioning old parts.
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Using Arduino, it would be super easy to integrate an RPM dependent shift light LED, as well. Pretty cool.