Development of a prototype of technological assistance for people with hearing, speech, or visual disabilities

This paper presents the results of a research project focused on the development of a prototype assistive technology for people with hearing, speech, or visual disabilities. The device was designed as an accessible, functional, and low-cost tool capable of facilitating communication and interaction with the environment through color recognition, audio output, and visual feedback. An iterative methodology was applied that included design, construction, testing, and optimization stages. Components such as the TCS34725 sensor, the DFPlayer Mini, and the ESP32 board were integrated, prioritizing energy efficiency and portability. Electronic design tools such as Fritzing and FlatCAM were used for manufacturing, along with 3D printing for the chassis. The final prototype stands out for its compactness, robustness, and adaptability, overcoming limitations of other developments focused on a single disability. This advancement lays the groundwork for future testing with real users and its possible implementation in educational contexts.