Features

Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano
Onboard dual HR8825 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)

Package include

1. Stepper Motor HAT (B) x1
2. RPi screws pack (2pcs) x1
3. Aluminum heatsink x1

Resource download: http://www.waveshare.com/wiki/Stepper_Motor_HAT_(B)