DIY hydrophone

Technology
DIY hydrophone
21-hydrophone.jpg

This clever hydrophone project involves rewiring ordinary earbuds with condenser microphone capsules and filling the earbud casings with silicone, [Thanks, Pete!]

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My interests include writing, electronics, RPGs, scifi, hackers & hackerspaces, 3D printing, building sets & toys. @johnbaichtal nerdage.net

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