Tin Can Edge Detector

Part of the Eco-Engineering/Green Science series help save our environment! Build your own edge detecting robot using a recyclable soda can. Watch it glide across the table without tipping over or going off the edge. You will need an empty soda can, a small crosshead screwdriver and one AAA battery. Kit includes base cover, base with wires, lower can ring, upper can ring, gear top plate, battery cover, two lower arms, two upper arms, two transparent covers, motor with wires, two axles, two eye supports, two eyes, two sets of bolts and nuts, two gear wheels, two terminal caps, five small screws and detailed instructions. Required but not included; clean empty soft drink can, small crosshead screwdriver, one AAA battery.