Fangrui Product Details 1. Waveshare Hrb8825 Stepper Motor Hat For Raspberry Pi, Drives Two Stepper Motors, Up To 132 Microstepping 2. Features 3. Standard Raspberry Pi 40pin Gpio Extension Header, Supports Raspberry Pi Series Boards, Jetson Nano 4. Onboard Dual Hr8825 Motor Controller Ic With Built-in Microstepping Indexer, Drives Two Stepper Motors, Easy To Use 5. 6 Available Microstepping Modes, Configured With The Dip Switches: Full-step, Half-step, 14-step, 18-step, 116-step, And 132-step 6. Adjustable Motor Drive Current Via Potentiometer, Maximum 2.5a Current Output 7. Protection Features: Overcurrent Protection (ocp), Thermal Shutdown (tsd), Vm Undervoltage Lockout (uvlo) 8. Integrates 5v Regulator, Allows Providing Power To Raspberry Pi 9. Onboard Multi Connector Options For Stepper Motors In Different Specifications 10. Comes With Development Resources And Manual (examples In Bcm2835, Wiringpi, And Python) 11. Specifications 12. Motor Controller: Hr8825 13. Motor Drive Voltage: 8.2v~28v 14. Motor Drive Current: 2.5a 15. Logic Voltage: 3.3v 16. Mounting Hole Size: 3.0mm 17. Size: 65 X 56mm 18. Package List 19. Stepper Motor Hat (b) X 1 20. Rpi Screws Pack (2pcs) X 1 21. Aluminum Heatsink X 1