Microcontroller based control system for rotating display with multiplexed LED array

In this paper is presented the design and the implementation of an innovative control system intended to be used in displays consisting in a rotating bar with multiplexed array of light emitting diodes (LEDs). The operation of the proposed system is based on persistence of vision phenomenon that is specific to the human eyes. This approach allows achieving a higher equivalent resolution in displaying complex messages and images using less number of LEDs in comparison with classical displays. The compact implementation based on a performing microcontroller lead to a reliable system with many practical applications.