Driver Type: Microstepping bipolar stepper motor driver
Motor Type: Bipolar stepper motors (e.g., NEMA 14/17)

Electrical Specifications

• Operating Voltage (Motor – VMOT): 8 V to 35 V
• Logic Voltage (VDD):3 V to 5 V
• Max Output Current:
  • Up to 1 A per phase (without cooling)
  • Up to 2 A per phase (with proper cooling/heatsink & airflow)

• Current Control: Adjustable via onboard potentiometer
• Protection:
  • Over-temperature shutdown
  • Under-voltage lockout
  • Crossover-current protection

Microstepping

• Microstepping Modes:
  • Full step
  • 1/2
  • 1/4
  • 1/8
  • 1/16 microstep

• Control Pins: MS1, MS2, MS3

Inputs / Outputs

• Step/Direction Interface: STEP, DIR pins
• Enable Pin: ENABLE (active low)
• Reset & Sleep Pins: RESET, SLEEP
• Motor Outputs: 2 channels (A1, A2, B1, B2)

Additional Info

• Current Limiting: Adjustable using trimpot (Vref)
• Decay Modes: Mixed, slow
• Board Dimensions: ~15 mm × 20 mm (typical Pololu-style module)
• Included Components: Often comes with heatsink
• Mounting: Standard 0.1” pin spacing

Applications

• 3D printers
• CNC machines
• Robotics and precision control systems