LiFi: Transmit Music Using Light

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Introduction: 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

    0
    ShobhitR1
    ShobhitR1

    3 years ago

    please send me its pdf at ranjanshobhit510@gmail.com

    0
    AshleyR49
    AshleyR49

    4 years ago

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

    0
    FirestarV
    FirestarV

    Reply 3 years ago

    I need full pdf

    0
    SasankaK
    SasankaK

    3 years ago

    can i use LDR instead of solar cell?

    0
    el10savio
    el10savio

    Reply 3 years ago

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

    0
    SasankaK
    SasankaK

    Reply 3 years ago

    How many volts should the battery be?

    0
    SkipperThe
    SkipperThe

    4 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

    0
    el10savio
    el10savio

    Reply 4 years ago

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

    0
    FelixK14
    FelixK14

    Reply 4 years ago

    could you upload a circuit diagramm soon?

    0
    DhruvM16
    DhruvM16

    Reply 4 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

    0
    Planetoidex_5
    Planetoidex_5

    4 years ago

    muy buena canción¡¡¡ :v

    0
    RajeshwerR
    RajeshwerR

    4 years ago

    how did you modulated the signal at LEDs during transmission?

    0
    el10savio
    el10savio

    Reply 4 years ago

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

    0
    DhruvM16
    DhruvM16

    Reply 4 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?

    0
    hsharrouf
    hsharrouf

    4 years ago

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

    0
    el10savio
    el10savio

    Reply 4 years ago

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

    0
    hsharrouf
    hsharrouf

    4 years ago

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

    0
    LázaroA3
    LázaroA3

    4 years ago

    Hi.

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

    0
    el10savio
    el10savio

    Reply 4 years ago

    No a micro-controller is not required.

    0
    LázaroA3
    LázaroA3

    4 years ago

    Hello.

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