Make: Online : HOW TO - Make low cost Hydrophone (listen to fish & whales talk)

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

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.

Comments

Oldest comments listed first.

Posted by: Tercero on March 21, 2007 at 6:04 PM

Interesting, but a little pricey. You can get ALL of the materials at the dollar store. Total cost of 4 dollars. Thanks for the info though.

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Posted by: philliptorrone on March 21, 2007 at 8:26 PM

in the video, the maker lists and tells you that you can get the parts on your own...

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Posted by: Tercero on March 22, 2007 at 12:44 PM

I'm not critizing Phil. I'm sincere. Thanks for the article. I'll try it out when I get the chance.

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Posted by: mrhulot101 on March 24, 2007 at 4:52 PM

Pricey? Perhaps. Kit contains toy microphone, tygon tubing, 12'rubber balloon, non oil based personal lubricant, non hardening modeling clay, cable ties, Q tip, a cd with the complete us navy diving manuals, the us navy underwater salvage manuals, and a how to make money book on ebay all with a money back guarantee.

A more valid criticism would be the poor photo quality of the video, but then I filmed it with a $39 dollar RCA Small Wonder Digital video camera velcroed to my baseball hat. I truly appreciate the opportunity you gave me to share the video, I hope to do more soon, I can't thank you enough.
regards,

Robert Moffett

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Posted by: Nori Maki on March 5, 2008 at 6:12 PM

Could anyone post a walkthrough of making a DIY piezo-ceramic hydrophone? Supposedly this can be done by ripping the speaker out of a discarded musical greeting card.

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