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en.wikipedia.org/wiki/Metal_detector

A metal detector is an electronic instrument which detects the presence of metal nearby. Metal .... and 1960s, metal detector manufacturers and designers made smaller lighter machines with improved circuitry, running on small battery packs.

www.wikihow.com/Build-a-Metal-Detector

Tune the radio to highest band on the AM setting. Make sure you are not tuned to a station. You should hear the static tone clearly and steadily. This will allow ...

www.instructables.com/id/HomeMade-Metal-Detector

I recently discovered a really cool method in using a few household items to make a HomeMade Metal Detector! Heres how to make your own! Heres a link to  ...

.ask.com/youtube?q=How+To+Make+Metal+Detectors&v=nS4GWuD5Dk8
Apr 25, 2015 ... Easy, fast, and simple to build, yet very effective and powerful for detecting various metals. You can use different search coils with the same ...

www.easytreasure.co.uk/bfo.htm

Build your own metal detector. Easy to complete project ideal school college or hobby.

.ask.com/youtube?q=How+To+Make+Metal+Detectors&v=Pbxb2tnt1J0
Jan 18, 2015 ... Looking for a simple but effective metal detector circuit for coins, jewelry, and more? Then this one may be exactly what you're looking for.

bestmetaldetectorshq.net/how-to-make-a-homemade-metal-detector-step-by-step

Nov 21, 2015 ... Have you perfected the art of metal detecting? Do you feel let down by the unit you are using to metal detect? Are you aware that you can make ...

mods-n-hacks.gadgethacks.com/how-to/create-metal-detector-from-household-items-212524

Jul 10, 2008 ... So, if you're on a treasure hunt, and have no money yet, then make your own metal detector. What You Will Need: 1. A calculator, 2. A walkie ...

nevada-outback-gems.com/design_plans/DIY_metal_detect/metal_detector.htm

Assembling your own metal detector is definitely not an easy project: Nevada Outback Gems.

www.sciencebuddies.org/science-fair-projects/ask-an-expert/viewtopic.php?t=14344

We are trying to build a metal detector from and AM/FM radio and a calculator ( both with batteries). We have the radio on AM at a high static ...