This homemade metal detector circuit will help you find objects composed of materials with relatively high magnetic permeability. It is not suitable for buried coins discovery that is not sensitive ...

Metal detecting is a fun pastime, even when all you can find is a little bit of peace and a whole lot of pop tabs. [Huygens Optics] has a VLF-based metal detector that offers much more feedback than ...

There's often history just beneath your feet, waiting to be discovered. A long-forgotten button, an antique coin, or even a remnant from one of the wars that shaped our country. Trying to unearth ...