Constant Temperature Control - Compensate Outside Temperature

Through a dc motor driver like this (not as powerful):

https://www.amazon.com/MELIFE-Controller-10-50V-Driver-Extension/dp/B08PK6G7B2/ref=sr_1_15?keywords=dc+motor+driver&qid=1693827065&sr=8-15

and that drives an infrared led.

I used to have a simple temp on off relay but the constant clicking is annoying. I would like some smoothness and more control.

So yes the buffer node… something like this but automated:

I dropped some nodes and tried to think of something beyond that but I am drawing a complete blank:

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