Wow, ive come a long way since then and I had even forgot that I ever did this!
As for the circuit, I think its best if you try and figure it out on your own. If you are not comfotable about designing a circuit for this then you are obviously not ready to try some thing 'this' complicated.
Why not try a flashing light excersise first? And then maybe a A/D conversion from a potentiometer. And then get an LCD going. They are usually the best ways to go. From there It is possible to simply replace the Potentiometer for the LM35Z and vuala.
Phil
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