Fan problem

[Pilotltd 0]

Printer has two fans, fan0 is hot end fan and has temperature control set and comes on at 45C. Fan1 is print cooling fan. Printing ABS I only want hot end fan on. Untick cooling and it sends M107 which turns off fan0. Is there any way in cura to define fan numbers? Tried on both Cura 3.3.1 and 3.4 beta.

[burtoogle 514]

I guess you could use the post processing plugin to modify M106 and M107 lines to specify the fan.

[Pilotltd 0]

Maybe a bug, but post processing plugin does absolutely nothing in 3.3.1 or 3.4Beta. Possibly because my install is 64bit, if the plugings are not compatible they wont work. Several other plugins don't work either.

[burtoogle 514]

Sorry, I don't use any plugins so I can't help you but as they are written in Python they should work OK irrespective of the host machine architecture.

[eldrick 65]

https://reprap.org/wiki/G-code#M106:_Fan_On

M106: Fan On
Parameters

Pnnn Fan number (optional, defaults to 0)²

Snnn Fan speed (0 to 255; RepRapFirmware also accepts 0.0 to 1.0))

Extra Parameters

Innn Invert signal, or disable fan¹

Fnnn Set fan PWM frequency, in Hz¹

Lnnn Set minimum fan speed (0 to 255 or 0.0 to 1.0)¹

Bnnn Blip time - fan will be run at full PWM for this number of seconds when started from standstill¹

[burtoogle 514]

I submitted PRs to allow the cooling fan number to be specified on a per-printer basis.

 

https://github.com/Ultimaker/Cura/pull/3950

 

https://github.com/Ultimaker/CuraEngine/pull/797

 

Don't get too excited, these are unlikely to be incorporated for months (assuming they get accepted, that is).