OK, I know it's generally a no-no to connect motors straight to an Arduino, but the stepper motor I'm driving is minute. It's tiny. Open frame, just two coils and a little magnetic rotor. I dug a stepper motor out of an autofocus lens, soldered four little wires to it and stuffed them in the Arduin…

Running a stepper motor directly from Arduino outputs... will zeners help?

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