How are you feeding balls to your shooter?

[Tom I]

My team's actually going for a rotating turret this year, so we have the added difficulty of feeding the balls through a rotating lazy-suzan. To do this, we have the conveyor belt to bring the balls to the top, then a second roller to provide enough "pinch" to stop the balls at the top, and roll them in when we want them. These balls then go directly to the thrower wheel. We still don't have a working example of this, I'll try to get a video up when we do. But if it fails, we have thought about putting in a pneumatic piston to stop the balls and only allow one through at a time. As we're trying to avoid pneumatics unless another need for them arises, we're gonna first try the roller design.