Arduino PID Library

Hi guys, I am a newcomer to the Arduino and this is my first post. I purchased one to do a few chores as part of a Car PC installation and have just about got the main hardware and software elements sorted out enought to actually start putting some stuff together.

I was actually thinking about addng a climate control system to my car while driving earlier today and new there were some intergrative vcontroller solutions out there and now I have found one for the Arduino! By the sound of this thread, this is exactly the sort of software I would need to add climate control.

However, in the case of airconditioning, there are two parameters to adjust, one is the temperature setting and the other is the fan speed. Could this library be adapted to control two variables in unison? to achieve the desired temperature setting?