>I know I could go out and buy one of these, but this is not a commercial
>project, just something I wanted to see if I could pull off (and something
I
>need because I don't know if my firewood is dry enough to burn this
>winter...).

>Any thoughts, links, circuits, rants and flames appreciated.

>Thank you,
>Xyvind Tjervaag.

If you get enough flames, maybe you won't need the firewood?

I have been involved in the design of a device designed to measure the
conductivity of wood, in this case to find decay pockets in wooden utility
poles (see Shigometer). This design applied a 5V AC square wave (no net DC
component) to the wood under test, and measured the current flow across a
series resistor. An opamp was used to amplify the rather tiny voltage before
converting it.

Bob Ammerman
RAm Systems


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