On Sat, 25 Aug 2007 02:27:15 +1000, 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
silicon diodes change their forward voltage by about 2mV/C, just need a
good voltage reference, a ~1mA constant current regulator and maybe an
op-amp to boost the voltage up to something more suitable for A/D ports.
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/ts-7000/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/ts-7000/join
(Yahoo! ID required)
<*> To change settings via email:
<*> To unsubscribe from this group, send an email to:
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|