I’m interested in buy your systems but i don’t have to much experience in this kind of devices  so i would like to make you some questions to understand what i need to buy.

I would like to now: 
the on board computers, the  "overo" ones, have to necessarily work whit the expansion boards?
I can connect to the boards peripheral devices like USB mouse and USB keyboards?
The pwm outputs in the expansion boards can handle high currents or i have to drive the output in a power driver to handle a motor, for example?

att:                    CAGM
Carlos Andrés Gutiérrez Martínez
Ingeniero Electrónico
Especialización Electrónica Industrial.