Transmitting Music with Visible Light - Using an LED to make an Optoisolator
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- Опубліковано 25 сер 2024
- A simple physics-related project to broadcast music using an LED. Hook the audio outputs from a headphone jack up to a circuit with an LED that is being powered by a battery. The signal from the audio output will rapidly modulate the output (the brightness) of the LED. You can then use a photovoltaic cell (a solar cell).hooked to a voice amp, speaker, or crystal earphone to pick up the light signal and convert it to sound. Using am LED to send signal from one circuit to another is the basic idea behind an optocoupler or optoisolator.
That's awesome. Thank you sir .
Thanks for the note! You're welcome. 👍
Great hands on demo, appreciate the explanations!
Excellent! Thanks for the good vibes.
I'm finally able to see the videos IRL during class
OK, so what you've essentially done is create an external optocoupler. These things are actually really useful for galvanic isolation in audio circuits, especially in digital transport. I'm not sure if connecting the output of your computer to the circuit without a buffer is a good idea.
Wise and reasonable advice. 👍 indeed, a cheaper and more robust audio source would be better for this little demonstration.
I’d like to take mp3s of my vocal music (Brahms, Schumann, Schubert, Wolf, Mozart, Bach) - translate them into light frequencies, then transmit my music into the universe. Perhaps to be decoded by other intelligent beings. Perhaps to travel 3.8 billion years to the big bang. Is this possible?
Definitely. On some level, this is already done with radio waves that are already sent out. The signal could also be piggybacked on a laser intensity and be sent out that way. I've been thinking of having a student try using a laser to transmit music down the hallway this way.
🙏🙏🙏👌👌👌🤙🤙🤙👋
😎 👍