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Old 13-03-2017, 11:53 PM
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luka
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Join Date: Apr 2007
Location: Perth, Australia
Posts: 1,164
My fingers are itching to add more options to the driver so I have been thinking and thinking... Considering that everybody is using different cooling (different size of cold finger, different TEC and heatsink), the parameters used for the PID loop will definitely not be optimised for everybody's camera.

Is it worth making these parameters adjustable so people can determine the optimum values for themselves?

The danger is that lots of people will not know how to tune PID loops. Bad parameters can lead to oscillatory or unstable behaviour of the temperature. But tuning them properly can lead to faster cooldown and less or no over/undershooting of the temperature.

Also note that we are only using the proportional part of the PID loop with the constant Kp set to 0.04 - this is the only variable than can be tuned. Higher values will make the temperature control more aggressive but it may never settle.

I have a feeling that I am opening a can of worms here
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