A Smart Assistive Computer Numerical Control System for Visually Impaired People to Learn Writing

It is well known that Braille Systems are used for assisting visually impaired person to read and write. But most of braille systems are not that effective without human interference and in some cases, they are pretty much high in price as well. Most importantly, it becomes difficult for the visually impaired people to communicate through papers in the absence of this highly priced system. For day to day activities blind people often rely on pen and paper to relay short messages using words which they have learnt by sensing hand movement of others while writing. However this process takes a long time and also requires someone's assistance in the learning process. This makes it very difficult for less privileged people who do not get the adequate support or assistance to learn writing using pen and paper. This barrier can be erased through an automated assistive Device. The device is a microcontroller based Computer Numerical Control system with dc motors and linear slide potentiometers. The system also has a 3D printed keypad for input and a headphone, and vibration motor to provide feedback. The feedback system makes it easier to operate the device and enables one individual to learn the patterns of different kinds of shapes of alphabets or geometrical figures without any human intervention. Industry 4.0 factories have provided machines which involves wireless connectors or sensors that is linked to a computer or microprocessor that can monitor the whole production line and determine the result on its own. Our proposed model is a microcontroller based device that can generate different kinds of patterns and shapes on its own which is the actual essence of Industry 4.0. Therefore, this assistive device will help visually impaired people in a great extent by teaching them the patterns and shapes of different alphabets.