Features:
1. MS1 and MS2 pins broken out to change microstepping resolution to full, half, quarter and eighth steps (defaults to eighth)
2. Compatible with 4, 6, and 8 wire stepper motors of any voltage
3. Adjustable current control from 150mA / phase to 750mA / phase
4. Power supply range from 7V to 30V. The higher the voltage, the higher the torque at high speeds
5. Distribution pin, not welded, this module is open source
