We are using voice recognition Android App for updating message on scrolling LED board 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 Arduino Atmega328 which sends same data to dot matrix LED display which then scrolls text message on it.
Software:
- ARDUINO IDE
- EMBDDED CPP CODE
- Proteus Simulator
Hardware :
- ATMEGA328 Microcontroller
- Bluetooth Module
- LED Dot Matrix Display Module
- MAX7219 Shift Register IC
- Regulated Power Supply