RGB POV Rotating Display

Teh, Yu Yang (2011) RGB POV Rotating Display. Final Year Project (Other), Tunku Abdul Rahman University College.

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Abstract

In this fast developing technology world, many companies advertise their invention with latest technology or products through flyers and huge banner. In order to save the cost and space for the banner, we would like to replace the rotating display with the expensive banner. A RGB LED rotating display is a device that contains only a single column of LEDs and yet it is able to display image/message/animation. This is achieved by spinning the column of LEDs at high speed. As the LED is spinning, a microcontroller (PIC) sends data to the LED. Thus by lighting up the RGBs at exact intervals the RGB POV Rotating Display can produce what the eye sees as patterns. This works thanks to persistence of vision (POV), where the human eye retains image for spit second. This phenomenon happens all around us but we hardly notice it because we are used to it. A POV display is a display created by rotating an array of LEDs rapidly. Due to the fact that human eyes can only render so many images per second, the fast rotating RGB LED seems like a solid display. For example, in a television/monitor/laptop we see one whole screen of image instead of the lines that scan at high speed from left to right to made up the image.