Hi. I think, I've read that the ARDUINO's PWM frequency was about 490-500Hz. Somebody told me this was a quite low frequency for DC motor and should be like 20kHz instead. What do you think ?

PWM frequency

runaway_pancake May 22, 2012, 6:32pm 3

I'm using Arduino PWM here:

So far, so good.
I believe the "tone" heard at slower speeds is the 500Hz.

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