Uploaded February 2025 | Updated September 2026, 1 week ago

---

Short demo showcasing MicroPython-based stepper motor control using RP2040-Zero and PIO (Programmable Input/Output).
Steppers runs for a predefined number of steps, at speed (info sent to the PIO).

Setup:
• 3 NEMA 17 stepper motors.
• Each motor is controlled by an RP2040-Zero board.
• Commands (speed, direction, steps) sent via I2C, from a Raspberry Pi to the 3 RP2040-Zero boards.
• Stepper class built on PIO for efficient step generation and accurate positioning.

This control method is part of a larger project (youtu.be/ORftNl7bZG4), but it can be adapted for other applications requiring precise stepper motor movement.
Code & Examples: github.com/AndreaFavero71/pio_stepper_control
Code tested on Raspberry Pi Pico, Pico W, Pico 2, RP2040-Zero and RP2350-Zero.
With RP2350 the accuracy extends to a broader range of steps frequency (info at GitHub).