On 16/02/2011 14:40, Jens M. Guessregen wrote: > I think the best way would be (as all modern engines are doing now) to ha= ve > a separate hall sensor on the crank itself. Nearby all engines have a > visible hole in the clutch housing for adjusting ignition points during > maintenance work. I have seen some years ago solutions with plug in hall > sensors, using the marking on the clutch pressure plate to add electronic > ignition and injection system to older engines. Is it possible to detect the frequency of the Alternator with a small=20 sensor coil near it? --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .