Features Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano Onboard dual DRV8825 motor controller IC with built-in microstepping indexer, drives two stepper motors, easy to use 6 available microstepping modes, configured with the DIP switches: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step Adjustable motor drive current via potentiometer, maximum 2.5A current output Protection features: Overcurrent Protection (OCP), Thermal Shutdown (TSD), VM Undervoltage Lockout (UVLO) Integrates 5V regulator, allows providing power to Raspberry Pi Onboard multi connector options for stepper motors in different specifications Comes with development resources and manual (examples in BCM2835, wiringPi, and python) Specifications Motor controller: DRV8825 Motor drive voltage: 8.2V~28V Motor drive current: 2.5A Logic voltage: 3.3V Dimension: 65mm × 56mm Mounting hole size: 3.0mm Applications 3D Printer Sculpturing machine Mechanical arm Note: Raspberry Pi and stepper motors in the photos are NOT included. 1. Stepper Motor HAT x1 2. RPi screws pack (2pcs) x1