thermal sensing

[Mark Hahn]

> I can handle the software side, but I'm not  really
> sure where to begin looking on the hardware side.

ibutton and a serial interface, $25 or so.

> hardware.  I am looking for a temperature sensor that
> can simply go high or low when the threshold is reached.

gross.  data is cheap, machines are fast; why not collect 16ths 
of a degree every few seconds?

www.ibutton.com.

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