Tennis Ball Cannon
This is a fully automatic tennis ball cannon. This was a project I did some years ago for no real reason. I originally make my own PCB to control the cannon. My day job approached me a month ago and asked If I would present something to a local elementary school for the Great American Teach-in Day. I converted this machine to be controlled by a Allen-Bradley CompactLogix PLC for that demonstration. This is that program. It makes use of the new user defined instructions and block diagram features available in RSLogix5000. The kids very much enjoyed my presentation that day.