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Author Topic: Motorcycle RPM pulse triggered LED's  (Read 2078 times)

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avatar100

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Motorcycle RPM pulse triggered LED's
« on: January 16, 2015, 21:50:15 PM »
Hello,
Does anyone know if anybody has tried to trigger LED's from the coil pulses. The same location is used for RPM's. I want to have LED's flicker with the engine speed.At idle they would flicker slowly and gradually speed up as the engine speeds up.

Thanks,
Denis

kam

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Re: Motorcycle RPM pulse triggered LED's
« Reply #1 on: January 17, 2015, 00:55:11 AM »
Hello Denis
Haven't hard anything like this before, but I bet it is very simple. I suppose you mean the primary of the coil? Use a resistor (i would start my tests with 10K)  and a zener to drop down to say... 8 or 9 volts and drive this to an op-amp to interface your LED.