wow im betting that the ball collecting mechanism feeds onto the spiral ramp then getts sucked up the ball shooter mechanism. I like how you made the launcher be able to tilt for range.
our design is VERY similar
EDIT: WOW I was just looking at it again and that dosn't ONLY have a tilt but a pan too... That is a full turret...
My guess is that they will have the cammera constantly trained on the target and whenever they pick up a ball they just shoot it without loosing a beat