The rapid growth of smart infrastructure has increased the demand for efficient, accessible, and eco-friendly communication systems in public and institutional environments. Traditional notice boards and announcement systems rely heavily on paper-based displays or manual updates, leading to delayed communication, increased maintenance, and environmental impact. This paper presents the design and implementation of an Eco Talk Smart Communication Board that integrates wireless communication, speech-to-text processing, and text-to-speech technology. The proposed system allows users to transmit messages through a mobile application using voice or text input, which are then displayed on a digital board and announced audibly through a speaker. The system is built using a ESP32 microcontroller, an LED panel , and a text-to-speech module. Experimental results demonstrate low response time, reliable operation, and improved accessibility for hearing-impaired users. The proposed solution offers a scalable, low- cost, and sustainable alternative to conventional communication boards.

Keywords—Smart Communication Board, ESP32, Text-to-Speech, IoT, Accessibility, Green Technology