Scott Touchton wrote:
>> control the lower temperatures by the
>> use of the AVR, Temp sensor and the TRIAC.
>
>
> Please let me know what temp sensor you are using.  I could not find
> anything nice and linear to handle 500F, so I resorted to a
> thermistor and a lookup table.  Had the PIC watch the first run in a
> learning mode, then tuck away the temp and timing constants for
> future runs.  This got around the non-linearity of the thermistor...
> seemed easier than doing the math or an analog linearization (used to
> do them for a living... never again!).


I am not even planning to read and plot temperature curves.

I will just insert the temp sensor and make the processor gets the sensor
information when the oven is set to 200=B0F, 350=B0F and 450=B0F using it=
s own
temperature control.  Once the sensor gives the processor its values for
those temperatures, the only thing the processor needs to do is looking u=
p
to repet the same sensor outputs for 4, 2 and 1 minute, it will be done.

Doesn't matter anything.  The processor will control the TRIAC to make th=
e
sensor produce the same output of when using the oven own temperature
bimetal control.  Of course, when processor is controlling, the TRIAC wil=
l
be in parallel with bimetal control.

Wagner

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