Article
Light-Fidelity Based Text and Audio Data Communication System
Based Secure Data and Audio Transmission System using UART Protocol is an innovative approach to achieve secure and high-speed data and audio transmission. The system employs visible light signals for communication, providing increased security and reduced electromagnetic interference compared to traditional radio frequency (RF) based methods like Wi-Fi. The system architecture integrates a Li-Fi module with an Arduino microcontroller using the UART protocol, enabling asynchronous serial communication for reliable data transfer. A high-flickering LED array serves as the optical transmitter, while a solar panel or LDR acts as the receiver. The system demonstrates successful simultaneous transmission of hexadecimal text characters and audio signals, displayed on a 16×2 LCD and reproduced through a speaker respectively. The proposed system is suitable for applications requiring high confidentiality, such as military communications, healthcare, and industrial automation.
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