Transmit music using light

Here we convert music to varying light intensity and then transmit it wirelessly using an LED

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Inspired by the idea of LiFi. I tried to find a way to transmit music through light. The light can be transmitted for a few centimeters but the distance can be increased using high power LEDs and an amplifier.


  • 1
    Step 1

    Parts required:

    • 9V Battery
    • Alligator wires
    • Leds
    • Solar cell (Preferably above 2V)
    • 3.5mm audio jack
    • Mono speaker
  • 2
    Step 2

    The transmitter is shown below:

  • 3
    Step 3

    The circuit diagram is shown below:

View all 3 instructions

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Honza Mareš wrote 03/19/2017 at 14:16 point

Hi, which kind of modulation did you use??

  Are you sure? yes | no

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