4-wire, 2-phase stepper motors can be controlled via digital outputs SQR1,2,3,4 .
Since these outputs can only drive currents up to 20mA reliably, users must use push-pull drivers such as the L293B

Micro stepper motors shown below consume low amounts of current, and can be driven directly via the SQR outputs.






They’re 4-wire, 2-phase steppers, and can be driven in half/full step modes using 4 push-pull digital I/O.

Stepper Motor Control
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