Environmental Monitoring

Drew Van Zandt drew.vanzandt at gmail.com
Tue May 10 21:19:00 EDT 2005


My company makes these devices... might be out of your budget, but
it's Ethernet-based with several available *nix apps for monitoring,
including Nagios/Netsaint and MRTG.  Also can be done from a perl
script.

Specs:
http://www.sensatronics.com/products_environmental_monitor_em1.php

Pricelist:
http://www.sensatronics.com/products_pricelist_usa.php

Questions?  Ask!

On 5/10/05, Ben Scott <dragonhawk at gmail.com> wrote:
> On 5/10/05, mike ledoux <mwl+gnhlug at alumni.unh.edu> wrote:
> > Have any of you done anything like this?
> 
>   If you have any APC Smart-UPS units with open expansion slots, APC
> sells a gadget that provides ambient environmental monitoring.  I
> think it's called "Measure-UPS".  I've seen them for a few hundred
> dollars.  While that is more then the "non-existent budget" you
> mentioned allows, it is cheaper then multiple thousands.
> 
>   If you're really after the "bargin basement" stuff, I've seen hacks
> that attach a thermocouple to the parallel port using a simple
> analog/digital converter IC.  I'm told such projects require nothing
> more then some really cheap parts and some skill with a soldering
> iron.  I don't know about humidity sensors, but it's possible the same
> idea applies.
> 
>   Keep in mind that polling the parallel port to acquire data like
> this tends to be rather CPU intensive, due to the ancient and
> brain-damaged design of the parallel port, so if you go this route, I
> would put it on a spare junkbox PC, not a busy server.
> 
>   This message originated in theory, where everything works.  Reality
> may have other ideas.
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-- 
Drew Van Zandt



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