Hotend fan speed - how to change? – Hardware, firmware and software help – Prusa3D Forum
Where to enable extruder-temperature controlled fans in Marlin? - TechOverflow
BUG]Part Cooling Fan not Running - after clicking on Menu it starts with 100%, not adjustable - SKR Mini E3 V2 · Issue #20670 · MarlinFirmware/Marlin · GitHub
Extruder fan (FAN1_PIN) AUTO_FAN functionality not working · Issue #49 · bigtreetech/BIGTREETECH-SKR-E3-Turbo · GitHub
BTT SKR Mini E3 V2 cooling fan doesn't run - 3D Printing - Maker Forums
Hotend fan speed - how to change? – Hardware, firmware and software help – Prusa3D Forum
Automatic Control The Cold End Fan [The Unofficial JGMaker (& JGAurora) Wiki]