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Motor &  power shield for arduino

Velleman VMA03: Motor & Power Shield for Arduino Uno™

Velleman VMA03

The Velleman VMA03 Motor & Power Shield for Arduino Uno™ (Velleman module No Soldering Required)

The Velleman VMA03 was designed to drive a relay or stepper motor with your Arduino Uno™. This module has (2) channels that can output up to 2.5 Amps when using internal power (from the Arduino®) or 6 Amps when using external power. You can run (2) DC motors forward/backward or (1) bipolar stepper motor. Pins on the Arduino Uno™ board can be used to stack other shields if needed. A downloadable example sketch is located on the Downloads tab to get you started.

Want to build your own? Check out the Velleman KA03.


  • 2.5 A (max.) output current (each channel)
  • 50 V (max.) external power supply input
  • Dimensions: 75mm x 55mm x 30 mm / 2.95" x 2.16" x 1.18"
  • Requires 1 Ardunio Uno™ - Not Included


Manual explaining how to use the module (english version)


Arduino sketch example
Example sketch to load into your Arduino UNO. Demonstrates how to control the KA03 motor & power shield.

Info Sheets

Product information

Overview of Velleman modules that are equal to D.I.Y Kits
This sheet is useful when you want to know which modules you could find in the do-it-yourself range of Velleman Kits and minikits.

 Warning: this product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov/product