Re: Metallic sensor

Photon713 wrote:
Looking for a sensor that will tell me when ferous metal passes
within an inch or so and causes a beep or turns on light or vibrator.

http://www.google.com/images?q=metal.detector+wand
http://www.google.com/images?q=electronic+stud.finder

It's not a component; it's a system.
It's not a single-piece "sensor" either; they use a tank circuit.
.

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