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