Update PID while waiting for ADC. #4
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Update PID calculations while waiting for ADC: * Move PID update code into separate doPID() method. * Call doPID() also from within checkStatus() delay loop.
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If we are at PID changes, maybe a deeper discussion is needed.
For example, there are some well established practices, validated over time by experience, that in the first minute the power level should be constant and not bigger than whatever level.
I use on my machine for example the 36% level, which is the stable power when preheating at 190 C.
A roasting approach based on profile following driven by a wild varying temperature, in the first minute, can led often to 100% level of power, which is everything you want but not a good thing...
So I suggest limiting the heater power level after charge to whatever value, with a default value lower than 50%, for safety.
That is a good point. But we should still fix bugs in the mean time. |
Update PID calculations while waiting for ADC:
This seems to make the PID more stable with a large D-term.