Uploaded June 2015 | Updated September 2026, 3 weeks ago

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Using a DIY/homemade laser communicator to send sound on a laser beam. The laser shines on a solar cell, which uses an amplifier and speaker to turn it back into sound.

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See also:

How to Make a Laser Communicator
youtube.com/watch?v=yZ7PrWUVWP8&list=PLFsZmHTZL-zn3jrI0X0e0aRijWlyvfg8h

Transmitting Sound using Sunlight - The Photophone
youtube.com/watch?v=Kc9Mjzfowcs&list=PLFsZmHTZL-zn3jrI0X0e0aRijWlyvfg8h

ScareDuino - Arduino controlled Skull with Servo, LEDs, Speaker
youtube.com/watch?v=LS3S17LP2-o&list=PLFsZmHTZL-zmfXxstlxuJgRE9bOGobEVu

A few more details can be found on my webpage about it here:
rimstar.org/science_electronics_projects/laser_communicator_diy_homemade.htm

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