[61799] in North American Network Operators' Group
Re: ethernet-based temperature sensors
daemon@ATHENA.MIT.EDU (David Lesher)
Thu Sep 4 22:30:08 2003
From: David Lesher <wb8foz@nrk.com>
To: nanog@merit.edu (nanog list)
Date: Thu, 4 Sep 2003 21:34:37 -0400 (EDT)
Reply-To: wb8foz@nrk.com
Errors-To: owner-nanog-outgoing@merit.edu
Speaking on Deep Background, the Press Secretary whispered:
>
>
> 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 $8 for each sensor (iButton and holder). I have little
> time and no Java skills, otherwise it looks like a cool project. If
> somebody wants to develop a machine room temperature monitoring
> network out of them, I'd be a beta tester ;)
That looks a lot closer to the Yellow Brick Road than anything
else suggested to date. I like the 64 bit SN idea; sounds like
MAC addresses...
Note there are several analog temp sensors out there -- National
has a line that is dirt cheap ($~1.00) and work on current loops
[i.e. LONG leads are OK..] so if someone has a SNMP driven A-D....
--
A host is a host from coast to coast.................wb8foz@nrk.com
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433
