This project presents the development of a Voice-Based LED Notice Board utilizing P10 LED modules, an Arduino Nano microcontroller, and an integrated buzzer alert system. The system aims to modernize traditional notice boards by enabling wireless and hands-free text updates through voice commands. Voice input is captured using a speech-to-text interface (typically via a smartphone app or Bluetooth-enabled voice module) and transmitted to the Arduino Nano. The microcontroller processes the received text and displays it dynamically on the P10 LED display panels, which are known for their brightness and scalability. Additionally, a buzzer is triggered every time a new message is updated, providing an audible alert to attract attention to the newly displayed information. This innovative system eliminates the need for manual updates, offering a user-friendly and efficient solution for schools, offices, public places, and transportation hubs. The project also showcases the integration of voice recognition technology with embedded systems to enhance accessibility, automation, and real-time information dissemination.      

The main objectives of the project are:  

• To design a wireless, voice-controlled LED notice board.
• To display messages on P10 LED modules using Arduino Nano.
• To enable hands-free message updates via voice commands.
• To alert users with a buzzer when a new message is displayed.
• To replace traditional manual notice boards with a smart system.
• To improve information sharing in schools, offices, and public places.

      The major building blocks of this project are:  

1. Regulated Power Supply.
2. Arduino nano.
3. P10 LED display.
4. LED indicators.
5. Buzzer with driver.
6. Bluetooth.

        Software’s used:  

• Arduino IDE for compiling and dumping code into Microcontroller
• Express SCH for Circuit design.

    Regulated Power Supply:

     

Block Diagram:            

video: