This project works on the principle of Persistence of Vision. It works by casting an illusion of motion which is created because the brain interprets multiple blinking LEDs as one. When multiple LEDs light up in fast succeession, the brain combines them into a single, persistent image.

This project was orignially made as a way to light up my room. The initial prototype was made using an old CD-Drive for the base and for its DC-motor. It houses a single row of 8 LEDs which are rotated and triggered by an optical sensor to light up and display a series of characters or numbers.

An arduino mini micro-controller, programmed in C, is used to control the timing of the LEDs in order to form the desired character.

This was later refined and submitted to the IEEE project competition as a means of advertisement for local buisnesses.