Pulse Width Modulation – electronic speed controller – Free Preview!

Please note: I made a mistake in the circuit built for the video lesson. Surprisingly, the circuit still worked! I don’t get it, but the downloadable circuit diagram is correct, the video is not.  I also updated the circuit diagram with a small improvement April 23. R5, a 4.7 k resistor was swapped out for a 3.3k resistor which works better as it gets rid of beat notes.