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My inexpensive approach to temperature monitoring...

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pconroy:
Well, relatively inexpensive.  :)

I bought two of these devices: http://cgi.ebay.com/PC-Notebook-Laptop-USB-Thermometer-Temperature-Recorder-/250388256032?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item3a4c4d9520#ht_3619wt_910


One USB based and one that has a USB/RS232 chip embedded in it: http://www.pcsensor.com/index.php?_a=viewProd&productId=28


I found the RS232 device incredibly easy to program; the USB device required a little Googling to get it running on Linux.   

I've got one monitoring a room temp on the first floor, pretty conventional usage.


The other one, I think I got a little creative with -- I used a USB extension cord and ran it up to some HVAC ductwork that passed right by my server room.  I just wedged the sensor into the ductwork and have it check the temps every 2 mins.  This is the way I'm watching my furnace (in the winter, central A/C in the summer) cycle.

I write all the readings to a database and have been using them to guesstimate the effectiveness of some of the lifestyle changes we're putting in place.


 Just thought I'd pass that along!

Brian H:
Thanks for sharing your find and how you are using it.  >!

HA Dave:

--- Quote from: pconroy on June 29, 2010, 07:01:35 PM ---I bought two of these devices: http://cgi.ebay.com/PC-Notebook-Laptop-USB-Thermometer-Temperature-Recorder-/250388256032?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item3a4c4d9520#ht_3619wt_910

--- End quote ---

Very cool. I didn't even known there was such devices! 

Oldtimer:
Nice gadget!  Thanks for sharing.

Charles Sullivan:

pconroy:
If you like, you can feed the temperature data into Heyu with the emulation module type ORE_TEMU.

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