If you’re not familiar with the 555 timer, suffice it to say that this versatile ... One of two comparators fires when the voltage on the TRIGger pin is less than the lower reference or that ...
As it turns out, the ever-useful 555 timer chip does the job admirably. It’s a simple enough circuit, the threshold pin is pulled high so the output goes high, and the PWM drive from an Arduino ...
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