DIY Metal Detector

February 25th, 2008 | Category: Gadget News

I don’t know whether kids these days love to look for buried treasure in their own backyard with a metal detector, but I surely had a field day back in my early years. Here’s a way to prepare your very own metal detector for the more prudent dads who are reading that. All you need is an AM radio, some

tape, and a calculator in order to produce a radio frequency signal which can bounce off metal, allowing the radio to produce a rather grating tone. Now whether only I can dig out an AM radio with everything gone digital…

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Original post by Allanda

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