I confess I'm not entirely sure what the Mote is for quite yet, but I'm guessing that the row of three-pin connections are for servo/pwm type devices?
I'm interested in building something like this http://www.youtube.com/user/RyanPololu?blend=2&ob=5#p/u/1/-27CQ_d7YSg
However, I'd like to be able to have a few of these around the room, and control them from a base station with a T.V. remote, using an XBee controller. I like the Mote for this because of its wireless capability, but I'm not sure if 3.3 volts will be enough to drive the LEDs? Being that I'm Not Qualified as an engineer, is this actually a problem?