When the school asked us to build a t-shirt launcher for football games in 2006, they didn’t have to ask twice. We immediately set to work. As high-school students at the time, we jumped at any project that had the possibility to explode or catastrophically fail. What we ended up with was a 250 pound beast of a machine that could barely keep the shirts inside the stadium at 25% power. Everything on the robot is controlled remotely. The robot has two pneumatic systems. The first runs on 120psi compressed air that is generated by two on board air compressors. It operates all of the reloading cylinders. The second system runs off of a 20lb CO2 tank and operates the main launcher. It is regulated to anywhere between 15 and 130psi depending on whether we would like to shoot the t-shirt into the stands or into orbit. All of this takes quite a bit of battery to run. We use two 12 volt sealed lead acid batteries that give us 2-4 hours of run time depending on how much driving and firing it is doing. Since our original build, they did a overhaul of it in 2008 (pictured) to make it a little faster and fit through doors a bit better. I still need to post video worthy of this creation.