I'm new around these here parts, but I had a quick (probably stupid) question.
I'm looking into creating a device with the Tobi-Duo dual-ethernet expansion board. My understanding is that in order to do anything with this I also need a COM module which mates with the expansion board via the two 70-pin connectors.
My question is that both the COM module (say the plain ol' Overo Earth) and the Tobi-Duo have +5V barrel connectors.
Does that mean I need two power supplies for my device? Or is the expansion board powered by the COM module via the two connectors?
I think man invented the car by instinct.