Development of a Microcontroller-based Anti-violence Billboard

Abstract

Effective communication is crucial in institutions and public places, where digital display boards play a significant role in disseminating information. Traditional display boards often require constant reprogramming, limiting their flexibility and efficiency. This project addresses these limitations by designing and implementing a Light Emitting Diode (LED) scrolling message display system using an ATmega328 microcontroller. The system is specifically designed to promote anti-violence campaigns, such as "SAY NO TO EXAMINATION MALPRACTICE AND CULTISM," while also accommodating static printed images. The microcontroller-based system allows for easy and efficient message updates via a personal computer (PC) equipped with Visual Basic software (MEKUS), serving as the interface between the user and the display system. Messages are dynamically displayed on the LED board, providing clear and engaging communication. The system operates on a 5V DC power supply, with message scrolling controlled by shift registers using four IN4049 ICs. This design enhances the security and awareness within institutions by offering a reliable and user-friendly platform for real-time information dissemination. The advantages of this LED display system include ease of setup, programming, and handling, along with a clear presentation of scrolling text.