Finally, he puts this knowledge to use by building a laser turret based on a pan-tilt platform. The Arduino-driven turret uses two micro servos controlled with pots to move by degrees in X/Y space.

The guys from the House4Hack hackerspace in Johannesburg won the 2011 Google+ Hackathon with their Friggin’ Laser Turret. The build started off as a remote-controlled webcam that can be ...