DRV8825 Stepper Motor Driver Carrier, High Current
Overview
The Pololu 2987 is a compact carrier board for the TI DRV8825 bipolar stepper motor driver, capable of delivering up to 1.5A per phase without a heat sink. It operates from a supply voltage of 8.2V to 45V and provides six microstep resolutions down to 1/32-step. The module includes a built-in regulator for the logic voltage and an adjustable current limit via an onboard potentiometer.
Why Choose This Part
The board offers a simple step and direction interface, reducing the number of MCU pins required for motion control. It includes critical protection features such as over-temperature thermal shutdown, under-voltage lockout, and over-current protection. Its small form factor allows for high-density integration on custom PCBs or breadboards.
Applications
Getting Started
Connect a motor power supply between 8.2V and 45V to the VMOT pin and ground, ensuring a large decoupling capacitor is placed nearby. Use the onboard potentiometer to set the current limit to match your motor's rated current before operation. Interface with any microcontroller by toggling the STEP pin for motion and the DIR pin for rotation direction.
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