There may be other groups I could ask this in, but this is the only one I know of that may be using this board for the same thing I am. I am looking to find out about a formula/algorithm for the pt100, specifically what it is. I am new to this sort of thing, but it is good to add a new wrench to the toolbox every now and then. If anyone can point me in a good direction to help me it will be appreciated as well. If it is something that the adult/people with degrees should handle I will drop it and leave it to them, if not I will give it a go and see what I can do.