Application of PIC microcontroller for controlling piezoelectric Braille cell

Piezoelectric Braille cells are used in many Braille display applications. The Braille displays using piezoelectric are able to refresh the Braille character that are read by visually impaired or blind people by touching the dots at Braille cell. Each piezoelectric Braille cell consists of six or eight movable pins or dots in rectangular array. The height of pins or dots in Braille cell is controlled by a piezoelectric bimorph. This will cause the pins or dots at piezoelectric Braille cell is rise or fall and therefore, create the Braille character or word. In this paper, the piezoelectric Braille cell is integrated by using PIC18F452 microcontroller while the software is written with CCS C program language. The pin or dots at Braille cell which represent a certain character is also presented.