HOW TO – Make low cost Hydrophone (listen to fish & whales talk)

Technology

current: @adafruit - previous: MAKE, popular science, hackaday, engadget, fallon, braincraft ... howtoons, 2600...

MisterB sent in this video on how to convert a simple toy microphone into a hydrophone to listen to underwater sounds – Link & kit on eBay.

current: @adafruit - previous: MAKE, popular science, hackaday, engadget, fallon, braincraft ... howtoons, 2600...

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