I have seen a variety of methods to measure engine RPM for a small 6.5HP honda engine, and I believe the best solution is a hall effect sensor to detect the magnetism generated by the voltage though the sparkplug. I have yet to understand though any kind of measurements as to what kind of sensitivit…

Sensor to measure engine RPM

system June 5, 2012, 3:03pm 10

Awesome! Good advice, that should work

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