Tuesday, August 31, 2010


There is pretty much no heat sink on the Pololu Jrk 21v3 USB Motor Controller with Feedback. So basically that means if you try to do any kind of serious control of start/stop/speed of a real motor (say 24V / 0.3A), you will end up melting it. There isn't much in the manual about how to even mount a heat sink, the thing is so small and there is plenty of exposed solder blobs that it would be tough to do. Having made other motor controllers get seriously hot in the past using PWM control, I guess I'm not surprised.

I'm moving up to the Geckodrive G320X. The whole bottom of it is a heat sink.

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