[AcesJames]

176's first minibot has an NXT brick on it. It was used because the person making the minibot did not know how to wire limit switches and household switches to change the polarity and/or stop the current to the motors as he desired. That minibot weighs 7 pounds now, and climbs in 9 seconds.

I would advise against using the NXT. You don't need it. If you've created a minibot that is so complicated it needs an NXT brick, you've done it wrong.

Our second minibot is 2 motors, with direct drive to the FTC wheels, and a batter strapped to the back with a few switches to control the polarity and on/off. This minibot weighs about 3 pounds and climbs in roughly 3 seconds. It's not a super fast minibot, but it took less time to make than the far more complicated NXT bot, and is much faster.