Yan Seiner wrote:
>
> Does anyone have any suggestions for a cheap thermocouple?
>
> I am looking for something that can be put into a small animal
> environment (cage or tank) so it has to be low voltage and visually
> unobtrusive; ideally something like the stick-on strain gauges that I
> can run DC voltage through, and stick on to some out-of-sight portion
> of the tank.
>
> My plan is to run it into the A/D on one of these boards, and control
> heaters based on the input.
>
> I'm coming up dry with Google; I don't need/want a large, industrial
> unit. I need something a homeowner/pet owner wouldn't notice.
>
> --Yan
>
What about something like an LM34? Its a 3-terminal temperature sensor
that takes a 5v supply and outputs millivolts proportional to either F
or C (there's one for each). Use the A/D to convert.
http://www.makingthings.com/resources/datasheets/acc_tmp_001.pdf
--Jeff
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