[Epoch] sent in this simple head tracking job utilizing Lego pieces. He’s made a custom install to hold 3 Lego light sensors on a baseball cap. Then, after modifying his webcam for IR with some floppy disk scraps, he tons up the free-track software application as well as can manage his games. For convenience, he has programmed the Lego Nxt to only turn on the lights while he’s holding a get in touch with sensor. You can see it in action after the break. This appears to be extremely similar to [Johnny Lee’s] head tracking. Judging by the video, it’s not as smooth though.