GBC: Beginnings

My next project is a GBC which stands for "Great Ball Contraption"  that I will enter into NXTLogs "crazy contraption" challenge. I have seen many different versions of the GBC some super BIG and some super small  but I wanted to make one using only one NXT set that could go constantly go around without me feeding it any balls. I am not quite finished yet but should be finished in about a week. I it will only have three modules (because I only have three motors) and is about 2 feet long. In other news my sister got a DSLR camera so she can get some HQ photos of all my robots that  make!