Constant Surveillance

This project invokes the sense of paranoia and claustrophobia. In the center of a small enclosed space, there is a small unobtrusive camera... that then turns and begins to track your movement around the space.
The project is done by connecting six motion sensors to an ATtiny84 microcontroller. When a sensor detects motion in one region, it gives the microcontroller input which is then used to turn a stepper motor (with a camera attached) to the corresponding region. The viewer moves left, so does the camera; the viewer moves right, the camera follows again.

Materials: ATtiny84, 6 infrared sensors, stepper motor (and its driver)
Programming language: C