Article
IoT-Enabled Campus Digital Signage Framework using Flask-Based Edge Computing
Traditional information dissemination in educational institutions relies heavily on manual, paper-based notice boards, which are prone to delays, high maintenance costs, and physical constraints. This paper proposes a centralized, real-time IoT-based Campus Display Board (ICDB) system powered by the high-performance Raspberry Pi 5. The proposed architecture integrates a web-based administrative server with distributed edge nodes via a secure IoT communication layer. Utilizing a Flask-driven backend and a dynamic HTML5/CSS3 frontend, authorized administrators can remotely broadcast multimedia content—including high-definition video, static images, and emergency alerts—from any location. The Raspberry Pi 5 serves as the core processing unit, leveraging its quad-core capabilities and improved networking stack to ensure lag-free rendering and continuous synchronization with the server via a polling-based manifest protocol. Experimental results indicate that the system significantly reduces the latency between announcement creation and public display compared to conventional methods. Furthermore, the modular design promotes sustainability by eliminating paper waste and offers a scalable infrastructure for future smart-campus integrations, such as AI-driven content scheduling and automated cloud synchronization. This research demonstrates a cost-effective, energyefficient, and user-friendly solution for modernizing institutional communication and enhancing administrative transparency in a digitally driven academic environment.
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