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Interesting point. I too am having my doubts about my original theory. Reduced current should reduce the operating output, not remove it entirely, especially under no-load conditions. Clearly...

The original drivers had no ground circuit (apart from power), and enable was bypassed by default. They were pretty basic. While the motors worked ok in one direction, they wouldn't turn in the...

I think I might have solved the problem. When I bought my drivers I went with the peak amperage rather than the RMS (and of course bought the cheapest possible within that boundary). My motors draw...

Hi,

I'm setting up a CNC router with an Arduino Uno connected to pretty standard bipolar stepper drivers powering NEMA 23 motors. Still in the testing phase, none of my motors will move in a...