Allegro MicroSystems boards
1 Allegro MicroSystems development board — pinouts, specs, and datasheets.
Allegro MicroSystems
The A4988 is a microstepping bipolar stepper motor driver carrier. STEP/DIR pins advance the motor; MS1-MS3 select full to 1/16 microstepping; a trim pot sets the coil current limit. Widely used on 3D printers and CNC.