Developing a self-learning braille kit for visually impaired people

Abstract

Bengali Braille kit is a very essential device for learning of visually impaired people in Bangladesh. It is the method which helps them to learn bangle alphabet .The literacy rate in case of visually impaired people in our country in very low .Various factors lack government initiatives, limitations of tutors lack of personal attention etc are the possible reason of this state. Our project aims at developing a self learning Braille device which can help people with visually impairments .The solution aids at developing an easy to learn device that will behave as a teacher and teaches the visually impaired people for learning the Braille learning system .This device is operate by single AVR microcontroller. Braille device which consists of two (3*2) matrix cell one is (3*2) solenoid switch matrix cell and other is (3*2) IR sensor cell which is as like as the Braille cell. Also IR matrix cell developed one extra IR sensor which give instruction to the user to placed card on the sensor board properly .The device mainly operate two different modes i.e. learning mode and training mode .The user first listen the instruction and select the mode operation. In learning mode the Braille sensor cell sense the Braille character from the card and pronounce corresponding output to the speaker and show these Braille character in solenoid matrix cell .In training mode the solenoid matrix cell sequentially show the bangle alphabet character and pronounce corresponding Alphabet to the speaker. Our project is an attempt to utilize technology to educate the visually impaired students.