Chopper microstepping driver based on the Allegro A3967, supporting bipolar stepper motors up to 750 mA per phase and 30 V motor supply. Defaults to 1/8 microstepping (1600 steps/rev on a 200-step motor); adjustable current from ~150 mA to 750 mA via onboard trimmer.
| Pin | Type |
|---|---|
| Coil A+ | Control |
| Coil A- | Control |
| Coil B+ | Control |
| Coil B- | Control |
| STEP | Signal |
| DIR | Signal |
| MS1 | Signal |
| MS2 | Signal |
| ENABLE | Signal |
| SLP | Signal |
| M+ | Power |
| GND | Ground |
| 5V | Power |
5 V · 12 V · Wired
Verify supply voltage and logic levels before powering up.
Module pins: M+, 5V, GND, STEP, DIR, MS1, MS2, ENABLE. Schematik maps them to your board in the app.
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