Features: 1.6 Different Step Resolutions: Stepper motor driver board supports 6 different step resolutions selected by DIP switch: full step, half step, 14 step, 1/8 step, 1/16 step and 1/32 step. 2.HR8825 Motor Driver Chip: There are two onboard HR8825 motor driver chips, built in converter, easy to control, and can drive two stepper motors. 3.GPIO Interface Design: Based on for Raspberry Pi40 PIN GPIO interface design, suitable for Raspberry Pi series motherboards, for Jetson for Nano. 4.25A Current Output: Motor controller drives support to adjust the motor drive current through the potentiometer, support up to 25A current output. 5.Overcurrent Protection: Motor controller drives support overcurrent protection, thermal shutdown, and undervoltage lockout. The on board 5V voltage regulator chip can directly supply power to the for Raspberry Pi. There are various on board stepper motor interfaces for easy access to different s. stepper motor. specification:Item Type: Stepper Motor HAT Material: PCB Motor Driver Chip: HR8825 Motor Drive Voltage: 8.2-28V Motor Drive Current: 2.5A Logic Level: 3.3V PackageList: 1 x Stepper Motor Driver Board 1 x Cooling Aluminum Block 3 x Screws 3 x Nuts 2 x Studs