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Teacher uses cheap laser and solar panel to transmit wireless sound — iPad powers home project that was inspired by solar panel making noise when attached to speaker

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Tom's Hardware

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A high school chemistry teacher and YouTube creator, Phil, discovered he could transmit sound wirelessly using light by connecting a solar panel to a speaker and exposing it to light. He built a wireless transmitter using his iPad, a solar panel, and a cheap speaker, demonstrating the process on his YouTube channel. By replacing the LED with a red laser diode, he improved the sound quality and showcased how accessible this technology has become. While not groundbreaking, Phil's project highlights the potential for inspiring future engineers and inventors through hands-on experimentation with tech.

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