ethernet-based temperature sensors
Bill Owens
owens at nysernet.org
Thu Sep 4 15:26:00 UTC 2003
At 7:59 -0400 9/4/03, David Lesher wrote:
>Argh -- $$$$
>
>There used to be "spider" sensors that were cheap but I heard
>they shut down. What you need is something based on those "stamp"
>CPU's but I donno who is making such...
I suppose if one had enough time and interest, and some Java skills,
you could make something out of these:
http://www.ibutton.com/ibuttons/thermochron.html
http://www.ibutton.com/TINI/applications/sertoeth/
Oops, somebody's already done it:
http://www.maxim-ic.com/appnotes.cfm/appnote_number/1048/ln/en
Looks like the total hardware cost would be around $100 for the TINI
and board, and $8 for each sensor (iButton and holder). I have little
time and no Java skills, otherwise it looks like a cool project. If
somebody wants to develop a machine room temperature monitoring
network out of them, I'd be a beta tester ;)
Bill.
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