Another fun activity from the Exploratorium Teacher Institute Project.
Audio signals can be carried by radio waves or as electrical pulses in wires. Other forms of electromagnetic radiation, such as visible light, can also carry audio signals. In this Snack, you can build a simple device that will transmit audio signals from a radio or digital-music player via a blinking LED to a solar cell.
Each Tuesday is EducationTuesday here at Adafruit! Be sure to check out our posts about educators and all things STEM. Adafruit supports our educators and loves to spread the good word about educational STEM innovations!
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