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Re: Any electronics nerds interested in Arduino/Atmel?
Bingo on the ignition coil thought. Replace your switching transistor with points and add a secondary HV coil for the spark output and you have it. An ignition coil is a transformer that converts switched DC to HV DC spark output.
A computer controlled car replaces the points with a computer controlling a switching transistor that activates the ignition coil. That's why modern cars have things like crankshaft position sensors, so the computer knows when to fire the coil(s).
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