BRAILLE PRINTER WITH WIRELESS PDF TRANSFER

Abstract

Braille printers play a vital role in providing accessibility to visually impaired individuals, but their high cost and complexity often make them inaccessible. This project focuses on designing a low-cost, portable Braille printer using readily available components such as the ESP32 microcontroller, stepper motors, and a solenoid. The system consists of an (ESP32) bi-directional server that receives PDF files and process them, then sends the processed text via Serial transmission to the Arduino that translates the received and processed text into Braille and embosses it onto A4 paper with precision, adhering to international Braille standards. Key features include wireless file transfer via Wi-Fi, an intuitive web interface, automated word wrapping to maintain text readability, responsive LCD, keypad for user-interaction within the printing process, and a simple safety-system. The printer achieves a dot spacing accuracy of ±0.2mm. Its midweight design, powered by USB, ensures portability and ease of use. It bridges the accessibility gap, enabling individuals, schools, and organizations to produce Braille materials independently. This open-source solution has the potential to make significant contributions to education, inclusivity, and accessibility for the visually impaired community.