Development of the low-cost solution for Braille display based on linear actuators with 3D printed mechanisms and servomotors.

Braille display is a display for the blind, but instead of LEDs it is composed of a matrix of dots that are mechanically operated with rising and falling capability. The matrix of one dot (or pin) consists of 8 dots, placed in 4x2 form. The combination of the dots with some risen and some in passive mode, i.e., fallen, gives us a chance to express all the possible ASCII symbols. There is a challenge among the scientific and production personnel to construct the cheapest and more reliable system for the blind to gain digital information and our team of engineers is a part of it and this thesis work is only a part of a bigger project carried out by. This project is an engineering design and development project and is about development of a new affordable type of Braille Display. The many-fold cost reduction is achieved by replacing piezo-actuators with linearly driven mechanical systems and enhancing electronics. The mechanism is driven with cheap servo motors and is based on sliding with rising dots. The paper explains all the evolution of work performed, from the most primitive to the most optimal achieved till now with graphs and video links with description.