Step 2: Equipment and Supplies
I also added some optional items. I suggest holding off, on getting the battery for they can be a little expensive and the one listed doesn't even come with a charger. I suggest just getting a 5 - 6 volt source and run a wire, because the robot won't be walking very far, very fast. Finally I would suggest getting the accelerometer to help the robot balance itself, but it may be a little hard for someone that doesn't have much experience in programming.