We are using voice recognition Android App for updating message on 20×4 LCD with the help of Bluetooth module HC-05. The android app converts speech into text using google speech to text conversion.

We are sending text data using mobile phone which is received by Bluetooth module and given to microcontroller. The microcontroller used here is from Arduino UNO(Atmega328) which sends the same message on it.

Software:

• ARDUINO IDE
• EMBEDDED CPP CODE
• Proteus Simulator

Hardware :

1. ATMEGA328 Microcontroller
2. Bluetooth Module
3. 20×4 LCD Display
4. Regulated Power Supply

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