SlushEngine Stepper Motor Driver - by Roboteurs by Justin Policarpio and Reiner Schmidt — Kickstarter
Overview | Adafruit's Raspberry Pi Lesson 10. Stepper Motors | Adafruit Learning System
Amazon.com: Stepper Motor HAT for Raspberry Pi 4B/3B+/2B/B+/Zero/W/WH/and Jetson Nano,DRV8825 Motor Controller Drives Two Stepper Motors, Up to 1/32 Microstepping,Use for 3D Printer,Sculpturing Machine etc : Electronics