Published Paper Details:

In today's fast-paced digital era, traditional paper-based notice boards are becoming obsolete due to their reliance on manual updates, higher maintenance costs, and limited reach. To address these inefficiencies, the Voice-Controlled Wireless Notice Board offers an advanced electronic communication system that replaces outdated methods with a real-time, hands-free solution. The system's core objective is to develop a digital display board that can be updated instantly via spoken commands, typically integrating an Android-based smartphone application as the transmitter and a microcontroller-driven display unit (such as an Arduino Uno or 8051 series) as the receiver. The user speaks a message into a mobile app, which uses speech recognition technology to convert the audio signal into a text string that is then transmitted wirelessly via Bluetooth (HC-05/HC-06) for local range or Wi-Fi (NodeMCU ESP8266) for long-range IoT-based updates. Once the microcontroller processes this incoming data, the message is rendered on an LCD or a large-scale P10 LED Matrix with professional scrolling effects. Index Terms - Electronic Notice Board, Voice Recognition, Android Application, Wireless Communication, Bluetooth (HC-05), Microcontroller (Arduino/ESP8266), LED Matrix (P10), Speech-to-Text (STT), Internet of Things (IoT), Real-time Data Transmission