This is a single "music radio/channel", as I called it, where you choose the channel/song by rotating the potentiometer. There are 10 channels/songs you can choose from. the serial data give you the song number.

the video link: https://youtu.be/RBxVh-T-nH0

EXPANDED TECHNICAL DETAILS

Visible Light Communication (VLC)

This project implements a unique audio transmission method that doesn't rely on traditional radio waves, but rather on light.

• Transmitter Logic: The Arduino reads an audio signal (or tone frequency) and modulates the intensity of a high-brightness LED. The light flickers at frequencies high enough to carry audio data but too fast for the human eye to perceive.
• Receiver Design: On the receiver side, a Solar Panel or Photodiode captures the modulated light. This signal is then filtered and amplified into a set of standard speakers.

System Efficiency

• Optical Shielding: To maintain audio clarity, the system uses a plastic lens to focus the light beam.
• Applications: Demonstrates the basics of Li-Fi (Light Fidelity), providing a secure, line-of-sight audio channel that's immune to RF interference, making it a "Spy-tech" style communication experiment.