Single Cell Bangla Braille Book Reader for Visually Impaired People

Abstract

Braille is a tactile system to represent text. A text in braille consist of several braille cell where each cell represent an alphabet or symbol. A single cell consist of 6 individual dots. Combination of raising high and raising low of these pins compose an alphabet. There is a standard braille code for each alphabet of most of the languages. Generally texts are embossed on paper and visually impaired persons move finger over the dots to read text. Our hypothesis is to keep the users fingers rest over the cell and actuate cell pins in such way that it can make feel like moving finger over cells. In this paper, we will show the design and development of a low cost portable braille book system with only one braille cell along with its experience with the real users. Besides all the available braille devices the challenges was to build such a system in so small space. We tested the device for several months with 10 users. They were able to read through this device and got different feedback from them.