Temperature Sensor

Stephen:
Experimented with the Thermistor (temperature monitor).

Used: The "smoothing" tutorial on arduino.cc to read values into the serial monitor of Arduino software.
Wired it up using the LDR schematic I linked to on the 30th of October.

Experience: not very sensitive to general room temperature, but very sensitive to high temperatures, i.e. fire.
My reasoning:
These are designed for use within systems that get VERY VERY hot, e.g inside a computer. When a certain temp is reached, it shuts down.

A digital temp monitor would probably be much better for our application, like this one on sparkfun.com. http://www.sparkfun.com/commerce/product_info.php?products_id=245