Thanks @Lyr3x for your work.
I have worked on porting the octoprint card to work with you integration.
Anyone interested can check it out here : https://github.com/repier37/ha-duet-card/
It has not been tested much besides on my setup, so feel free to report any issues.
btw, @Lyr3x to make your integration work on my setup I had to add authentication. check the pull request if you like to integrate it.
@nikscha I could not make it work either using RRF3.
I ended up modifying another integration to make it work with RRF 3.
You can find it on my repo :
https://github.com/repier37/hass-Duet3D
Basically I just added authentication to the integration I forked to be able to retrieve data.
It is still using the rr_status command that is planned to be removed in RRF3.5 if I recall correctly, but it should work with earlier version. It should not be too hard to move to rr_model as it should only be changing json parsing.