[EricH]

Originally Posted by artdutra04

Since this is round, it probably involves a turret of some sorts. My guess is that the ball shooter is located below the opening, the the shooter/hopper are mounted on a turret. A ball collector off the floor sucks balls up to the top of the robot, and dumps them into the ball hopper. This way, they can continue to suck up balls regardless of their turret position. But, this is just a guess.

Noting one of Copioli's remarks earlier in build (something about "we're not going for floor loading", IIRC), I'd say human load only. Balls collect and are funneled into the shooter somehow.