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BTW, The best solution is the arduino circuit I posted earlier. That way you get a calibrated gauge. FWIW, I have re-posted the images that were lost due to the external image provider going away. So if you go back a few pages in this thread you can review them.

Brokencase, your arduino circuit is no doubt the most accurate way to track temps, there's just other things needing attention which prevent me from devoting the time to make one. OK... lack of skill being another issue.