In one instance, the demo video showed AI playing multiple instances of 3D Pong, which wouldn't be all that impressive on its own, except that the simple paddles controlled by AI were only given a ...
The example rig is a seesaw-like balance beam and uses a lot of 3D printed parts and some plywood ... An IR sensor determines how far the ping-pong ball is from the edge of the beam.
The end result is a 3D printed low-energy ping pong rail gun, more or less. The design is pretty clever and you might find some ideas even if you don’t want to actually accelerate ping pong balls.
NARRATOR: It's crunch time for the 3D crew. And who's going to take home the coveted, and totally pointless, prize of, eh… most properties? Two cubes high-five as they prepare to compete.