PingPong Ball Dispenser
thingiverse
The BBC World Service radio show "Click" featured a tweet-controlled, fifth-generation ping pong ball launcher. Earlier designs with hoppers experienced jamming issues. View it in action at http://www.youtube.com/watch?v=iPG-ji3zt7A, and visit ElectricLaboratory.com for building instructions. Assemble the main section using bolts and nuts, lasercut parts from 3mm material (MDF recommended), glue disks to servos, insert a poster tube filled with ping pong balls into designated holes, and connect servos to an Arduino or similar device to rotate them, releasing balls through the "air lock."
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