Hack-A-Day reader [Colin] brought this machine to the robot challenge. He’s by himself, but managed to get this thing through airport security and it fit inside a single suitcase. He used a serial controlled eight channel servo controller, a usb-serial adapter and a hub to bring the wires together. Power is supplied by a pc supply and the system controlled by his laptop. The challenge was pretty popular and the teams were busy, so I’m light on the details. The gun just behind was servo operated, and performed pretty well in the tests I saw.