Underwater Data Transmission Using LiFi Technology with Raspberry Pi Pico W and Arduino

This project explores the implementation of underwater data transmission using Light Fidelity (LiFi) technology, leveraging the Raspberry Pi Pico W and Arduino platforms. The system consists of two main components: a transmitting side and a receiving side. On the transmitting side, the Raspberry Pi Pico W is used to interface with three switches, each representing a distinct status: "I’m Safe," "I Need Food," and "I’m in Danger." These switches are designed to trigger specific light signals for underwater transmission.The receiving side features an Arduino board connected to an LCD display and three LEDs (red, green, and yellow). The Arduino decodes the received light signals and indicates the status by activating the corresponding LED. Specifically, a green LED signifies "I’m Safe," a yellow LED indicates "I Need Food," and a red LED represents "I’m in Danger."This system demonstrates the potential of LiFi technology for underwater communication, providing a practical solution for conveying critical status information in environments where conventional radio frequency communications are ineffective. The use of visual signals transmitted through light ensures reliable and clear communication, enhancing safety and situational awareness in underwater settings.