It's probably in the documentation somewhere but could you save some searching and outline the specs on the nyboard for driving motors? i.e. how many motors can be controlled? are they all pwm? how much power output is there and how many say mg92 motors can be directly powered by the board? Can bigger motors be used if powered separately (that's beyond me at this point but one can grow into it)? Can it be supplemented with another motor driver board if one want to make like a 12 legged cat or something?