I saw a thread for this already kind of, but the distance is way different.
If I am combining two chemicals and need to keep them at that temperature for x amount of time before its time to do the next step, is this appropriate? Basically I'd measure for when it hits a certain temperature and then have it notify me when its been at that temperature for x minutes. I could put it very close to the fluid.http://www.sparkfun.com/products/87
Appropriate as in easy to hack into an Arduino (something I've never done before)
Second question is, the only good electronics site I know is sparkfun, can anyone suggest other reliable sites?