Hello, There are some kits (with DB9 connector / RS232) that can follow up to 4 sensors for $ 40-45 / 30 . It 's very fast to built it.
You get one mesure per second on the /dev/ttyX And after you can use rrdtool to have nive graphs. Regards. Xavier 2008/2/11, Bill <[EMAIL PROTECTED]>: > > On Wed, 6 Feb 2008 23:07:01 -0800 > Joe <[EMAIL PROTECTED]> spake: > > > Can anyone recommend a server room temperature sensor that I can use > > with openbsd? > > > > I want to monitor temperature and humidity. > > > > I hope to graph the data from the sensor. > > > > The sensor can be connected to my openbsd via usb, serial, or even > > network. > > > > I've used AVTECH in a few of my rooms. I think the cheapest is around > $240 maybe... bigger models can handle everything from smoke, to noise, > etc... > > Read them via SNMP tied to nagios. Works good, the basic model comes > with a temp sensor in the unit and a 25' (I believe) lead to a remote > sensor. > > I also have some NetBotz, and while expensive are pretty cool - > airflow, noise, temp, humidity, door sensor, camera, etc... Nice if > your not spending out of pocket eh...
