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Stepper motor control

Stepper motor control
Many PC users use their computer to control electromechanical systems. In these applications, it is often required to switch and control stepper motors. The circuit presented here communicates with the PC via the serial (RS232) interface, and is capable of driving two stepper motors. One of these does half steps only, the other, half or full steps. The control board is a truly multi-purpose design which is suitable for a wide variety of electromechanical applications based on stepper motors.
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