Suggestion on how to use 4 DC motors

This may be a newbie Arduino/Robotics question:

I am looking to to build a 4 wheeled robot that can drive around outdoors. I have been looking at the Devantech RD02 [1] system (motor controller + 2x 12v-DC motors). It offers Arduino support but the controller that comes with the RD02 can only drive 2 motors at a time, thus I would need 2 RD02’s.

However; I currently have an Arduino Uno which only has 1 set of serial/I2C pins, which are needed to communicate with the motor controller.

My question is:

What suggestions does everyone have on how I can go about controlling 4 motors rated for outdoor use. What motors? What motor controllers? Arduino Uno or Mega?

Any help would be greatly appreciated!! Thank you! :slight_smile:

[1] http://www.robotshop.com/en/drive-system-12-volt.html

Hi,
You can have more than one device on an I2C bus.

http://www.learningaboutelectronics.com/Articles/Multiple-I2C-devices-to-an-arduino-microcontroller.php

You need to check if you can change the I2C address of the controllers so one is different to the other.

Hope this helps…Tom… :slight_smile:

Your other post has answers. Please do not cross post.