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A kind of motor that moves in steps.

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You can read in the datasheet that 1A-1B are a pair(motor coil 1), and 2A-2B are a pair (motor coil 2). So 1A and 1B should go to one coil, and 2A and 2B should go to the other coil. That means you …
answered May 17 by MartinF