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The Stepper Board

Introduction

This board is based on the DRV8825 Stepper Motor Driver. It works with standard x4 wire bipolar stepper motors.

• Motor Voltage Supply from 8.2V to 45V
• Phase Current up to 2.5A, but ~1A is more realistic without a heatsink and fan
• Built in Step Controller, so strap the mode pins for the step mode: Full, Half, and Micro stepping.
• Easy control from a Microcontroller, digital pins to set the direction, enable the part, and step the motor.
• Fault Output Pin broken out and max current setting with a trim pot

Note that this board breaks out clamping diodes for each of the motor connections - these should not be needed, but I added them in for experimentation purposes.

Schematic

Do not use the 3V3 to power your project! The active pin needs to be pulled HIGH in order to turn on that 3V3 rail from the board... this was an error in the design, so for now, the board requires an external power supply for the motor and a power supply for your control electronics (3V3/5V).

Purchase

given to Patrons ...

Parts

Parts can be downloaded HERE and uploaded into Digikey

Assembly

Coming Soon...

Tutorials

Little refresher on how stepper motors work:

Tutorial using this board:

Resources:
The sample CODE