Stepper Motors with the Kitronik Board

A stepper motor can move an exact number of steps, giving high precision

Stepper motors give you a very precise movement of a number of steps. They are used in things like 3D printers, CNC machines, etc.

Wire up

Connect the 4 wires from the stepper to MOTOR1 and MOTOR2 in pairs. One pair goes to MOTOR1 and the other pair goes to MOTOR2.
Connect a battery to the + and - connectors (+ to red) on the Kitronik board.

If you are not sure which of the 4 wires are a pair, use a multimeter on the buzzer or resistance setting. You should get a buzz or 0 resistance on the wires that form a pair.

Add the library

You need to add the Kitronik extension. Copy the PicoRobotics.py file from the lib directory on github to the lib directory on the pico:

Code

Ensure you have the Kitronik Robotics Board library added and then enter the following code:

See code on github

# Test stepper with kitronik robotics board

import PicoRobotics
import time


# Create robotics object
robot = PicoRobotics.KitronikPicoRobotics()

# Turn stepper 1 forward then backward
robot.step(1, "f", 50)
robot.step(1, "r", 50)