DRV8825 stepper motor driver with heat sink (1/32step, 2.2A, A4988 pin-compatible)

Carrier board for Texas Instruments' DRV8825 stepper motor driver, equipped with a heat sink. It drives one bipolar stepper motor at up to 2.2 A output current per coil, with micro-stepping resolutions up to 1/32-step and a motor supply voltage range of 8.2 V to 45 V.

This module is pin-compatible with the A4988 driver carrier, making it easy to integrate into RepRap, CNC, or 3D printer projects. It features adjustable current control via a potentiometer and intelligent chopping for optimized performance.

Specifications

• Motor supply voltage (VMOT): 8.2 V to 45 V
• Maximum current per coil: 2.2 A (adjustable via potentiometer)
• Step resolutions: full-step, half-step, 1/4, 1/8, 1/16, and 1/32 step
• Control interface: step and direction signals
• Logic voltage compatible with 3.3 V and 5 V systems
• Integrated protections: thermal shutdown, over-current, under-voltage lockout, and short-circuit protection
• 4-layer PCB with 2 oz copper for improved heat dissipation
• Exposed solderable ground pad below the driver IC

This product ships with all surface-mount components—including the DRV8825 driver IC—installed as shown in the product picture.

Additional Information

• Pololu DRV8825 product page (datasheet & guide)
• In the wiring diagram, connect the blue line to digital pins, red and black lines to power pins VCC and GND; grey pins can be left floating.