The electronic ones don't require metal.

Read http://www.howstuffworks.com/question271.htm

Al Williams
AWC
* Floating point A/D
http://www.al-williams.com/awce/pak9.htm



> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Eoin Ross
> Sent: Monday, February 18, 2002 2:23 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [OT]: How does a wall "Stud Finder" work?
>
>
> They pick up screws and nails
>
> >>> kooter@ZAHAV.NET.IL 02/18/02 03:13PM >>>
> wood studs in wall? maybe plastic, then no coil help :-)
>
> Subject: Re: [OT]: How does a wall "Stud Finder" work?
> I can see how that would work for a steel stud.  But wood? David
>
> > Tal
> > Anyone out there know how a wall "Stud Finder" works? I
> imagine a coil
> > with some sort of level detection but I am curious. Cheers, Kevin
>
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