• Mr.P K Kulkarni
• Samreen Sohaila
• K Sri Satya Tanush
• Thatipally Shiva Kumar

Over the years, the overdependence on Wireless Fidelity (Wi-Fi) for data transmission necessitated the need for an alternate and more reliable means of communication, hence, Light Fidelity (Li-Fi). It involves the use of Light light-emitting diode to transmit data by blinking (i.e., switching them On and Off) at a speed not noticeable to the eye. This paper proposed the development of the Li-Fi system -using off-the-shelf electronic components. In this project, we are implementing Li-Fi communication using two Arduino. Here the text data is transmitted using LED and Push buttons. It is decoded on the receiver side using LDR. Also, by developing a user (Receiver PC) interface using Embedded C programming, the sample data (text, voice and image) transferred was monitored and the speed, efficiency, security and capacity of the system was examined. In the receiver section, the LDR sensor receives the visible light pulses from the transmitter side and converts it into interpretable electrical pulses, which is fed to the Arduino and receives this pulse and converts it into actual data. Then the data is displayed on a 16*2LCD display. The nature of radio waves used in Wi-Fi has made connection unstable and vulnerable to external threats. That is several security features were placed on Wi-Fi system based on security standards in order to make wireless networks more secure. These features are still vulnerable especially if the technology catches up and more people will figure it out how to exploit these features on other hand LI-fi is considered as more secure mainly because even in absence of encryption and other security features, the nature of connection makes it easier to secure connection. The addition of more security protocols to Li-Fi will not only enable high speed but also create opportunity to creative security to make connections more secure.

"Arduino-based Li-Fi data communication system", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 12, page no.h374-h378, December-2023, Available :http://www.jetir.org/papers/JETIR2312745.pdf

"Arduino-based Li-Fi data communication system", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 12, page no. pph374-h378, December-2023, Available at : http://www.jetir.org/papers/JETIR2312745.pdf