Our ME101 DP2 Project.
Design two machines in a 2′ X 2′ footprint that, when triggered by the pull of a string, initiates an automated sequence of tossing and catching a ball. For each machine, there must be a five second delay between the catching and trowing of the ball. There must be at least 4 throw+catch sequences and no chemical or electrical energy storage is allowed.
Constructed entirely out of foam core, plastic spoons, rubber bands, a wooden dowel, and two t-shirts, our two machines have a total of 16 launchers that allow for 16 consecutive throws (and catches).