The Chicago-area robotics group Chibots will be hosting Chibotica, a robotics competition, this Sunday from 10 a.m. to 5 p.m. at iHobby Expo at the Donald E. Stephens Convention Center in Rosemont, IL. They will also be hosting demonstrations that are open to the public on Saturday. There will be a LEGO Sumo competition, in addition to several other competition categories that are open to other types of robots. You can view more information on the competition here. Look for them in booth 2202.
NXTs should be well represented as legendary MDP Steve Hassenplug is a member of Chibots and is scheduled to compete in several categories! If you'd like more information on the rest of the iHobby Expo you can visit here.