Made a large drawing robot. Nice One, My design but I can get the uno to spin a stepper on the bench did example stepper motor rotation. stepper motor just hums. trying to use Michelangelo software. wont connect. Took days just to put Grbl in library. Any one in the Cornwall Ontario area?
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Wired incorrectly.
or
Coil burned out.
or
Trying to start too fast.
or
Insufficient driver current.
or
Partially burned-out driver.
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