If it still does not work after you clean up your code. You may just have one of your coils reversed on your stepper motor. This will cause the motor hum and not rotate. A schematic of your project would help.
good luck
If it still does not work after you clean up your code. You may just have one of your coils reversed on your stepper motor. This will cause the motor hum and not rotate. A schematic of your project would help.
good luck
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