[61761] in North American Network Operators' Group
Re: ethernet-based temperature sensors
daemon@ATHENA.MIT.EDU (Bill Owens)
Thu Sep 4 11:26:40 2003
In-Reply-To: <200309041159.HAA05630@sigma.nrk.com>
Date: Thu, 4 Sep 2003 11:26:00 -0400
To: nanog@merit.edu (nanog list)
From: Bill Owens <owens@nysernet.org>
Errors-To: owner-nanog-outgoing@merit.edu
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.
