Underwater Transmission of Audio and Text Signal Using LIFI Technology

The light fidelity technology refers to visible light communication that uses light as a medium to deliver high speed data which is much greater than that of WiFi. LiFi data is transmitted in several bit streams and the receiver side consist an IR detector decodes the message. The transmission happens in the form of binary data where 0 means LED in „OFF‟ state and 1 means that the LED is in the „ON‟ state. Transmitter and receiver sections contain Arduino which is programmed using Arduino IDE. High power intensity led is used in the LiFi transmitter. In receiver section photodiode module is used to detect the light signal generated by the LiFi transmitter. In this we are transmitting the 2 different data using light they are Audio signal and Text signal. Here we are having 3 kits analog kit for transferring audio signal and 2 kits for transmitting data and text using LIFI.

         For audio transmission we are using earphones, speaker, amplifier board, and solar panel, light. Here we will connect earphone to our system and it is connected to solar panel when we play the song on our system and if we place light on solar panel it will send that signal to amplifier circuit and it will amplify that signal and give it to speaker. For data transmission we are using LIFI transmitter and receiver. If we will write anything on monitor it will transmit from LIFI transmitter and receiver side will receive that data and show it on monitor.

Keywords: Light fidelity, wireless fidelity, data transmission.