Wow that's cool, what robot are you guys using? Did you build the robots yourselves? If so, where did you get parts etc.? And how does the system know when a ball is dropped through a specific hole, which then displays an animation with amount of points?
It's a Lynxmotion AL5A you have to assemble it yourself. We have 8 lever switches under the staging area we built connected to the GPIO pins on the Pi. When the Pi recognises a switch push it tells the nodejs server which passes it on to everyone.
We will post full lab notes explaining everything in detail like we did for our Halloween experiment soon!