This project presents the design and development of a Smart LCD Information Board with Speech and Image Integration using a Raspberry Pi Zero 2W. The system enables users to send text or voice commands through a Bluetooth-based mobile application. The received voice is converted into text, which is displayed on a 15-inch LCD monitor along with real-time time, Date and weather information like temperature, humidity and cloudiness. An SD card is utilized for local data storage, while HDMI output ensures high-quality display. This dual-stage implementation transforms the LCD into a versatile smart notice board that supports dynamic content, including text and speech. The proposed system can be widely applied in educational institutions, public notice displays, advertising boards, transportation hubs, and smart city infrastructures, providing an interactive, remotely updatable, and cost-effective information dissemination platform.    

The main objectives of the project are:

• To design and implement a smart LCD information board using a Raspberry Pi Zero 2W.
• To enable wireless text and voice input through a Bluetooth-based mobile application (Stage-1).
• To develop a speech-to-text conversion system for displaying voice inputs as text on the LCD screen.
• To integrate real-time information such as time, date, and weather parameters into the display.
• To utilize an SD card for local storage and efficient system operation.
• To create a user-friendly, interactive, and remotely updatable information display system.
• To apply the system in real-world scenarios such as educational institutions, public notice boards, transportation hubs, advertising platforms, and smart city infrastructures.

  The main blocks of this project are:

• Power supply.
• Raspberry pi zero 2W.
• 15-inch LCD Monitor.
• HC-05 Bluetooth Module.
• SD card.
• HDMI cable.

  Software’s used:

1. Python Programming.
2. Raspbian operating system.
3. Express SCH for Circuit design.
4. Bluetooth Technology

    Block Diagram:  

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