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30-04-2014 #35
Last Activity: 18-12-2023
I was thinking about the pulse generator part of the circuit. What about having a small microphone feeding into a high gain op amp with a couple of reverse connected diodes from the output to ground, then another stage to bring it up to 5v.
If you whistled into the mic then the output from the op amp would be a square wave, we used to make guitar fuzz boxes like this yeas ago.
Now combined with a direction switch all you would need to do was whistle a note that was proportional to the required speed.Last edited by EddyCurrent; 30-04-2014 at 05:07 PM.
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