1.A3967 microstepping driver.

2.MS1 and MS2 pins broken out to change microstepping resolution to full, half, quarter and eighth steps (defaults to eighth).

3.Compatible with 4, 6, and 8 wire stepper motors of any voltage.

4.Adjustable current control from 150mA/phase to 750mA/phase.

5.Power supply range from 7V to 30V. The higher the voltage, the higher the torque at high speeds.