LiFi: Transmit Music Using Light

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Intro: LiFi: Transmit Music Using Light

In this instructable I will show you how to convert music to varying light intensity and then transmit it wireless using an LED and a solar cell whose output it seen by a speaker.

Step 1: Demonstration

Step 2: Parts Required

  • 9V Battery
  • Alligator wires
  • Leds (here I use an emergency led light)
  • Solar cell (Preferably above 2V)
  • 3.5mm audio jack to be connected to mobile
  • Speaker

Step 3: Transmitter & Receiver

Connect the 9v battery in series with the audio jack then connect it to the led.

The tip of the speaker jack is connected to positive of the solar cell and negative is connected to the body.

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    24 Discussions

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    ShobhitR1

    1 year ago

    please send me its pdf at ranjanshobhit510@gmail.com

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    AshleyR49

    1 year ago

    Wont the 9 volt end up frying your phones sound card.

    1 reply
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    el10savioSasankaK

    Reply 1 year ago

    Yep, but you should connect a battery in series with it.

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    SkipperThe

    2 years ago

    Hey, just had a question. How do I connect everything, the pictures are a little blurry and can't figure it out.

    Thanks

    3 replies
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    el10savioSkipperThe

    Reply 2 years ago

    Thanks for the feedback! I will be uploading a circuit diagram soon.

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    FelixK14el10savio

    Reply 2 years ago

    could you upload a circuit diagramm soon?

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    DhruvM16el10savio

    Reply 2 years ago

    Could you please post the diagram soon. I have a school project that's due soon and I really wanted to use this as a demonstration. I'd greatly appreciate it.

    Thanks

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    Planetoidex_5

    2 years ago

    muy buena canción¡¡¡ :v

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    RajeshwerR

    2 years ago

    how did you modulated the signal at LEDs during transmission?

    2 replies
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    el10savioRajeshwerR

    Reply 2 years ago

    The phone's audio jack converts a song to an analog signal output to drive the LEDs

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    DhruvM16el10savio

    Reply 2 years ago

    Does this mean you can use any LED, or does it have to be one with a circuit like the one shown in the pictures?

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    hsharrouf

    2 years ago

    Would a light dependant resistor (LDR) be convenient for this type of communication? Or is a photodiode better?

    1 reply
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    el10saviohsharrouf

    Reply 2 years ago

    A photo-diode would be better as it has faster switching time.

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    hsharrouf

    2 years ago

    Would a light dependant resistor (LDR) be convenient for this type of communication? Or is a photodiode better?

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    LázaroA3

    2 years ago

    Hi.

    You use a microcontroller before transmitting the signal for the LEDs?

    1 reply
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    LázaroA3

    2 years ago

    Hello.

    You use a microcontroller before transmitting the signal for the LEDs?