Offcourse not Mr. Simon ...

Here's the idea...
when i'm bbq-ing... there will be smoke and heat right !

Then I wanted to "teach" the chip how to recognize the smoke and the heat produced.

I found out how to "feel" the heat... but another problem is i can't "see" the smoke... then how can I "brainstorm" the chip?

Can it be just a simple photo-npn and a led ?

Instead of using external voltage comparator for the heat sensor, I'm interested in using on-chip analog comparator provided. Again, do we still need external pull-ups for P1.0 and P1.1 ?

FYI, i'm bbq-ing in my bedroom :P