Stepper Motor Driver DRV8825 + Heatsink 3D Printer Step Stick

Features 1. maximum current of 2.5A. 2. up to 32 segments. 3. 4-layer PCB, better heat dissipation. 4. the chip resistance is smaller, less heat, and better heat dissipation. Size: 1.5X2mm Subdivision: 1,1 / 2,1 / 4,1 / 8,1 / 16,1 / 32 Manufacturing Process: SMT placement machine higher manufacturing, non-manual welding, yield more stable performance Supported 3d printers :Prusa Mendel, ultimaker, printbot, makerbot like. You can refer back Arduino code, direct drive motors This breakout board for TIs DRV8825 microstepping bipolar stepper motor driver features adjustable current limiting, over-current and over-temperature protection, and six microstep resolutions (down to 1/32-step). It operates from 8.2 V to 45 V and can deliver up to approximately 1.5 A per phase without a heat sink or forced air flow (rated for up to 2.2 A per coil with sufficient additional cooling).