After recently getting my hands on an Arduino Duemilanove, I came across this Sketch on Arduino Playground that allowed an Arduino to function as a temperature measuring device with the addition of a few cheap and easily obtainable components.
Deciding to take things a step further, I wrote a Python script to create a DIY temperature measuring device that could be used both locally, via the command line, as well as remotely, using a googlemail account to check the temperature of a room. You can grab a copy of this script, called “Ardthermo”, from the Software page.
This article should give all the info you need to know to build this little project for yourself and make use of the Ardthermo script. Enjoy.