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MKFirmware / MK4duo

MK4duo Firmware Printers 3D for Arduino and Arduino due
http://www.marlinkimbra.it
GNU General Public License v3.0
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4.3.6(Rev 4.2.6-29072018) Fan not working #541

Open scott0122 opened 6 years ago

scott0122 commented 6 years ago

Issue description

I have a fan that only can run at full speed. It works fine at 4.3.6(Rev 4.2.4-27062018). But it is not working at 4.3.6(Rev 4.2.6-29072018). I connect another fan that can run at lower pwn speed to the same connector, it works. It seems 4.3.6(Rev 4.2.6-29072018) fan pwn is not really at 255 when I set it to 255.

Firmware version

4.3.6, Rev 4.2.6-29072018 Due + RAMPS-FD V2

scott0122 commented 6 years ago

I have found that servo.deattach function cause auto fan stop working in Marlin-bugfix-2.0.x. Maybe this will help.