Smart Mobile Operated Digital Notice Board Using GSM and Arduino (20×4 LCD) – Advanced Wireless Message Display Project Kit

Description

⚙️ Project Overview

The Smart Mobile Operated Digital Notice Board Using GSM and Arduino is an advanced automation system that replaces traditional manual notice boards with a wireless SMS-controlled electronic display. It utilizes an Arduino Uno microcontroller and a SIM800L GSM module to receive and display messages on a 20×4 LCD screen.

This innovative project provides a real-time, remotely controlled information system, suitable for educational institutions, offices, transportation hubs, or public announcements. By sending a simple text message, users can instantly update messages displayed on the board, eliminating manual changes and saving time.

This project demonstrates practical knowledge in GSM communication, embedded systems, and serial interfacing, making it an ideal learning kit for B.Tech, Diploma, and Polytechnic students interested in IoT and automation.

📡 Working Principle

1. The system includes a SIM800L GSM module that receives SMS messages from any mobile phone.

2. The Arduino Uno communicates with the GSM module through serial interface pins (RX/TX).

3. Upon receiving a message, the Arduino processes and extracts the text content.

4. The processed text is displayed clearly on the 20×4 LCD display.

5. If a new message arrives, it automatically replaces the previous one on the LCD screen.

This seamless workflow provides a fully wireless, real-time updating mechanism, making it a powerful solution for communication display systems.

🔩 Key Features

• Wireless Message Display: Instantly show received SMS messages without cables.

• 20×4 LCD Display: Large, clear text display suitable for institutions and offices.

• Compact and Portable: Can be mounted or placed anywhere with GSM signal.

• Plug-and-Play Setup: Pre-tested, pre-programmed Arduino and GSM configuration.

• Low Maintenance: Once installed, it runs continuously with minimal supervision.

• Educational Purpose: Ideal for electronics, communication, and embedded system students.

🧰 Technical Specifications

🎓 Educational Value

The project provides hands-on experience with:

• GSM interfacing and serial communication with Arduino

• Message decoding and text display algorithms

• LCD display handling and timing control

• Integration of embedded electronics with communication technology

• Real-world industrial automation logic

Students will gain deep understanding of IoT-based display systems, telecommunication principles, and embedded microcontroller control — bridging theory and practical implementation.

💡 Applications

• Educational Institutions: For classroom or campus announcements.

• Public Spaces: Railway stations, bus stops, and airports.

• Corporate Offices: Internal communication boards.

• Commercial Use: Shopping malls and retail displays.

• Industrial Sites: Safety alerts and production updates.

• Emergency Systems: Broadcasting urgent notifications remotely.

🧩 Advantages

• Fully wireless — no internet, router, or LAN required.

• Cost-effective, easy-to-use project kit.

• Uses GSM technology, available everywhere.

• Real-time updates from any mobile phone.

• Expandable — can later integrate Wi-Fi, Bluetooth, or IoT.

• Ideal for students, makers, and institutions.

📦 Package Includes

• Arduino Uno (pre-programmed)

• SIM800L GSM Module

• 20×4 LCD Display Module

• Power Supply Unit (5V regulated)

• PCB and jumper wiring set

• Project documentation (Word & PDF)

• Block diagram & working explanation image

• User manual for demonstration