RPM pickup from Dyno

allanhurst:
Sound?

Perhaps tone() is what he in mind.... but only down to 30Hz, whereas 100rpm == 1.66 Hz

A simple loop with delay could do this.

Allan

I need to be able to generate 8k rpm equivalent of pulses. so if 100rpm == 1.66 Hz then 1000 is 16.6 and the tone function maxes out @ 2k rpm