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Core Electronics > Retired

ComMotion Motor Driver Shield

SKU: ROB-13257

$45.50 AUD, inc GST
$41.36 AUD, exc GST

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ComMotion Motor Driver Shield

SKU: ROB-13257

$45.50 AUD, inc GST
$41.36 AUD, exc GST

Retired Product


  • $6.95 Standard (2-4 days, tracked)
  • $8.95 Express (Overnight*, tracked)
  • $3 Economy Post* (3-7 days, no tracking)
  • FREE Pickup (Newcastle only)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.

This product has been retired and kept here for reference.

We are pleased to introduce to you the ComMotion Motor Driver Shield, a 4 channel motor controller that can communicate via I2C and be wirelessly controlled. This shield allows you to be able to control up to 4 motors at a time, read their encoders, and monitor their current draw all from one board. This powerful little shield fits snuggly on top of your RedBoard, Arduino, or any other development board that utilizes the R3 layout.

The ComMotion shield has been designed to drive 4 DC brushed motors at up to 2.5A continuous, each with peak currents of up to 4A per motor. With the preset configurations you will be able to easily control robots with omni or mecanum wheels by simply sending the ComMotion only three simple values: Velocity, Angle and Rotation. Onboard, the two ATmega328P processors will then do all the math required to calculate the correct speed for each individual motor.

Each ATmega328P processor even has its own serial port broken out into an FTDI header. These serial ports can be used for GPS, Bluetooth and LCD modules while leaving your Arduino serial port free for uploading and debugging code. The serial port on MCU2 is also broken out into a socket for an XBEE or WiFly wireless transceiver with voltage translation circuitry. While in the default configuration, the ComMotion shield will be able to accept serial commands directly from the serial port on MCU2. Just plug in a pre-configured Xbee, WiFly or Bluetooth module and you have instant wireless control!


  • Two ATmega328P (16MHz) Processors
  • Supply Voltage: 6V – 16V
  • Logic Voltage: 5V @ 1000mA
  • Wireless Support: Xbee / WiFly socket with voltage translation
  • Xbee/WiFly Power: 3.3V @ 300mA
  • Analog Inputs: 5x 10bit
  • Motor Drivers: 4x FET“H” bridge
  • Motor Current Continuous: 2.5A (each motor)
  • Motor Current Stall: 4A (each motor)
  • Current Monitor Range: 0A – 5A (each motor)
  • Current Monitor Resolution: ~5mA (each motor)
  • I²C Bus Voltage: 5V or 3.3V (selected by IO_REF pin)
  • I²C Bus Speed: 100kbs
  • I²C Addresses: 16 selectable pairs (software configurable)
  • Serial Ports: 2x 5V TTL logic (FTDI headers)


This product is listed in:

Documentation and Resources:
  • The Maker Revolution
  • The Maker Revolution celebrates the creation of new devices and the modification of existing ones - the transition from a consumer buying goods to eventually having a major part in their creation. The Maker Revolution places strong emphasis on free (...

Product Comments

Exact shipping can be calculated on the view cart page (no login required).

We deliver Australia-wide with these options:

  • $3 for Small Items (3-7 days, not tracked, only available on selected small items)
  • $6.95 for Standard Post (2-4 days, tracked)
  • $8.95 for Express Post (Overnight for Australia Post Next Day Network, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11.49 for Pack and Track (3+ days, tracked)
  • $16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
NSW, 2289

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

Have a product question? We're here to help!