http://hackaday.com Fresh hacks every day Sun, 12 Feb 2012 06:24:26 +0000 en hourly 1 http://wordpress.com/ http://1.gravatar.com/blavatar/5560f98f805877b0e332f191cb9e0af3?s=96&d=http%3A%2F%2Fs2.wp.com%2Fi%2Fbuttonw-com.png http://hackaday.com http://hackaday.com/2008/06/04/hydrophone/ http://hackaday.com/2008/06/04/hydrophone/#comments Wed, 04 Jun 2008 22:30:00 +0000 Juan Aguilar http://hackaday.iheartcashews.com:8181/2008/06/04/hydrophone/ ]]>
Chances are you’ve never wondered what your goldfish is trying to say, but if you have (or if you just want a project), check out this DIY hydrophone.

You will need a computer microphone, vegetable oil, plastic wrap, scissors, solder, and a small unused plastic bottle. Solder the mic capsule to an appropriate length of cable and test. The entire assembly can then be submerged in vegetable oil inside a plastic bottle. Yes, vegetable oil. Seal the bottle and you’re done.

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