Hi! I've undertaken a mini project in which I basically want to construct a robot with as many accessories attached to it as I can fit in.This would include blades,drills,pneumatics etc. For a start, can anyone throw some light on the following: 1. How to make the robot water resistant- (do I need special wheels to allow the bot move in water....do I need special motors ....how do I protect the motors agains water) 2.How to attach a firing mechanism (to fire small balls which are supposed to be 'bullets'-will this mechanism be controlled by a separate set of DPDT switches? 3. Could I try making my robot remote controlled by using IR sensors,just like we do in TV sets?? If so, how to go about it??