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Autotune PID what it is and how to use it

Autotune PID is a feature that is included in Marlin and most branches of it to help determine the best settings for the hot-end temp control. So what does it do? Well simply put it heats up the hot-end and cools it several times to determine the optimum setting for the heating element part. PID tuning refers to a proportional-integral-derivative…

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