Smart Digital Display for Real Time Information

Abstract

In the era of rapid digital transformation, traditional manual notice boards in educational and public institutions serve as a bottleneck for efficient communication, often leading to outdated information and excessive paper waste. This paper proposes the design and implementation of a \"Smart Digital Display for Real-Time Information,\" an IoT-enabled system aimed at automating information dissemination. The proposed architecture integrates a P10 LED display matrix with an HD-W02 Wi-Fi controller to facilitate instant, wireless updates. Unlike conventional static displays requiring physical connectivity, this solution leverages the LED ART mobile application, allowing administrators to broadcast announcements, schedules, and alerts directly from a smartphone via a secure peer-to-peer Wi-Fi link. The system processes incoming data packets to drive dynamic scrolling text and visual effects, ensuring immediate visibility. Experimental results demonstrate that the system operates effectively with low power consumption, significantly reducing manual maintenance while ensuring the reliable, eco-friendly delivery of real-time information.

Introduction

Traditional paper-based notices in educational institutions and public offices are inefficient, prone to delays, require constant maintenance, and can cause confusion. Existing digital displays often rely on cumbersome cables, limiting their use for urgent updates.

Proposed Solution:
The paper proposes a Smart Digital Display for Real-Time Information, using HD-W02 Wi-Fi controllers and P10 LED panels integrated with the LED ART mobile application. This setup allows administrators to send schedules and announcements directly from a smartphone, enabling instant, wireless updates.

Literature Insights:

• Previous systems employed Raspberry Pi, ESP32, Atmega32p microcontrollers, and IoT technology to remotely update text, images, and videos.

• Some hybrid displays combined quick alerts with detailed notices via separate modules.

• Advanced multimedia approaches allowed Android apps to transmit diverse content formats.

• The HD-W02 controller simplifies these systems, offering a cost-effective, mobile-friendly solution for real-time updates without complex computing units.

System Architecture:

1. Input & Formatting: Administrators draft and customize messages on a smartphone via the LED ART app (font, scroll speed, borders, animation).

2. Wireless Transfer: Messages are sent via secure peer-to-peer Wi-Fi to the display controller.

3. Data Processing: The HD-W02 controller decodes the signal and drives the LED panel in real time, storing the message in onboard memory for continuous display even if Wi-Fi disconnects.

Hardware Components:

• HD-W02 Wi-Fi controller

• P10 LED panels (32 x 16 modules)

• 5V 10A SMPS power supply

Software Components:

• LED ART mobile application for message creation and transmission

• HD-W02 firmware for data decoding and LED control

Methodology:

• Data Generation: Users create messages on the app with full customization.

• Communication: The app establishes a wireless connection, packages content into a data stream, and sends it to the controller.

• Processing & Storage: The controller decodes, drives the LED panel, and stores messages for autonomous operation.

Results:

• Visual Quality: High-contrast, legible scrolling text.

• Responsiveness: Near-instant updates from smartphone to display.

• Hardware Endurance: Panels and wiring are robust; the power supply warms slightly after long use, suggesting proper ventilation is needed.

• System Stability: Consistent voltage ensures no flickering or resets; system is reliable and user-friendly for non-technical staff

Conclusion

The study presented here demonstrates that the \"Smart Digital Display for Real-Time Information\" offers a secure, efficient, and eco-friendly alternative to traditional manual notice boards. The integration of the HD-W02 Wi-Fi controller with P10 LED panels has shown ample potential in overcoming the inefficiencies of paper-based systems, offering instant wireless updates, centralized control, and reduced maintenance efforts. These results support the efficiency and suitability of the design to be deployed within educational institutions, public offices, and transportation hubs where timely communication is critical. Future research could aim at cloud-based deployment for managing multiple displays simultaneously, AI-driven content scheduling, and higher-resolution full-color panels to further improve visual performance and user engagement.

References

[1] E. N. Ganesh, \"Implementation of a Digital Notice Board using Raspberry Pi and IoT,\" IJERT, 2019. [2] Koppolu Sai Tej et al., \"Integrated Wireless LED Notice Board using IoT,\" IJARECE, 2024. [3] P. V. Ram Raju et al., \"Digital Notice Board using Android Application and Raspberry Pi,\" Int. J. Electron. Commun. Eng., 2020. [4] N. Sharma and R. Kumar, \"IoT-Based Wireless Information Display System,\" International Journal of Computer Applications, 2018. [5] Patel and S. Mehta, \"Smart Display Systems for Public Information Using LED Technology,\" International Journal of Emerging Technologies, 2017. [6] R. Verma and S. Singh, \"Wireless LED Display System Using GSM and IoT,\" IJSRET, 2019.

Copyright

Copyright © 2025 Sanjana Patil, Shivani , Sujay Hiremath, Samarth , Prof. Pratik Shankar. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.