I plan to build functioning reaction wheels, controlled by an Arduino Micro. Ideally, I'd like to have the reaction wheels, and the micro, be a single unit which would receive external commands from another microcontroller.
I know you can link Arduino microcontrollers, and every time I've seen it done it has been with a RC module such as XBee. Is it possible to link units using something like the micro-usb on the Arduino Micro?
If this is possible, is it as simple as connecting the micro-usb ports on my microcontrollers, and then working out the programming?