Feature: 1. With micro‑step support (up to 128 micro‑steps per full step) and PWM drive voltage limit function. 2. Supports custom acceleration and deceleration curves to prevent unstable start and stop. Onboard registers can track current speed and position. 3. With an onboard 16MHz oscillator, allowing it to execute motion commands autonomously. 4. Built‑in over‑current detection, under‑voltage detection, over‑temperature detection, stall detection, a 5‑bit ADC and a switch input, can be used for either user jog control or as a hard stop function. 5. Stepper motor driver board, just connect your motor and your SPI compatible microcontroller, and start stepping. Specification: Item Type: Stepper Motor Driver Board Material: Printed Circuit Board Controllable Motor Parameters: 8-45V/3A Working Voltage: 3.3-5V I/O Level Support the Highest Number of Steps: 128 Microsteps Uses: Suitable for college students, engineers, technicians, factories, person DIY, electronic enthusiasts and other operation learning. Package List: 1 x Driver Board1 x Pin Header