You can get all the electronics from Amazon. You just may have to buy some in bulk, like the capacitors. For the cardboard, I used corrugated cardboard. The laser cut files is for cardboard 3/16 inch or about 5 mm thick.As long as the cardboard is nice and flat it should work. You could print laser cutter file on paper to use as a template to cut the parts from cardboard by hand.
The cardboard is about 3/16 of an inch thick.
Ha, forgot to add the video to the first step. It's there now!
DoggoBot Version 1View Instructable »