After working through my Experimenters kit I'm about to build my first robot. I'm pretty confident I can write the control sketches, but would like to use a separate power supply for the motors so they don't drain the supply for the Eleven control board.
I just have simple motors (not servos) with a black and red wire to each. How do I control these through the eleven board? All the projects I've made so far control devices that are powered by the board - and now I'm confused because this is different

Cheers,
Martin