[MrForbes]

Our turret so far. The plywood disc sits on a 6" lazy susan bearing. The ball is fed from the side. The shooter sits on top of this. The turret only moves a little bit, like 45 degrees. The belt is screwed to the wood disc. The pulley on the gearmotor had it's hole opened up to 10mm to fit the gearmotor shaft. Design calls for about one second to move 45 degrees, so we have about an 8:1 ratio, with the roughly 1 rev/second gearmotor.