RAMBO board problem with extruder fan & part cooling fan · Issue #11804 · MarlinFirmware/Marlin · GitHub
![prusa i3 - How can I add an extra fan, controlled by a microcontroller, to my board? - 3D Printing Stack Exchange prusa i3 - How can I add an extra fan, controlled by a microcontroller, to my board? - 3D Printing Stack Exchange](https://i.stack.imgur.com/Bq8w1.jpg)
prusa i3 - How can I add an extra fan, controlled by a microcontroller, to my board? - 3D Printing Stack Exchange
![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 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](https://user-images.githubusercontent.com/69717507/103768213-69daf700-5022-11eb-88df-0fa97ca2a6ea.jpg)
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
![BUG] BTT SKR E3 RRF. part cooling fan not working. works in 2.0.9.1 with same settings · Issue #23094 · MarlinFirmware/Marlin · GitHub BUG] BTT SKR E3 RRF. part cooling fan not working. works in 2.0.9.1 with same settings · Issue #23094 · MarlinFirmware/Marlin · GitHub](https://user-images.githubusercontent.com/81867884/141350691-00c21bd5-2619-446b-90bb-f3e68674406c.jpg)
BUG] BTT SKR E3 RRF. part cooling fan not working. works in 2.0.9.1 with same settings · Issue #23094 · MarlinFirmware/Marlin · GitHub
![ramps 1.4 - How to configure Marlin to enable auto-fans with dual extruder - 3D Printing Stack Exchange ramps 1.4 - How to configure Marlin to enable auto-fans with dual extruder - 3D Printing Stack Exchange](https://i.stack.imgur.com/eudic.jpg)