[Request] Mainboard fan control

[Deses]

Is your feature request related to a problem? Please describe.

I'd like to be able to control the speed of the mainboard fans that some boards like the SKR Mini E3 v3 are able to adjust.

Describe the solution you'd like

You'd need to add support for the command M710 - Controller Fan settings, and some checks for the firmwares that don't have that support enabled.

To enable it in Marlin you have to uncomment #define USE_CONTROLLER_FAN.

Describe alternatives you've considered

No response

Additional context

No response

[CmdrCody51]

That's a lot of real estate. Two buttons A on/A off and R. At least two sliders Speed and Idle. Maybe one for Delay but that could be done with a Number Box. I'll think about it but I don't have one to test against. I may play with some ideas and I'll let you know here. You can test them ;-)

[CmdrCody51]

I was messing around and came up with this Custom Control idea...

It goes on the Control tab underneath the normal display.
You can use the Custom Control plugin or just edit the config.yaml and then restart OctoPrint.
Let me know if you're interested.