@Phaedrux thats exactly how i did it 100mm at 1mm/s and i get 9,9mm left but at 5mm/s speed i get 19mm left.

I just checked the grubscrew and its fine and the filament tension was also good.
When i upped the temp from 205 to 220 i got to about 12 mm left.
It feels like the geared motor does not have enough power. On my original Minirambo board it was working fine, maybe the tmc2009 on 12v is to weak?

I think i will try to switch the duet to 24v and use my 12v bed with a SRR

Hey Guys,

i´ve replaced the minirambo on my Prusa MK2.5 with a Duet mini 3. My printer runs on 12v and the extuder motor is a Trianglelab geared Nema 17.

I calibrated the steps per mm with 1mms extrusion speed and noticed massive overextrusion on normal prints and hat to use a 83% extrusion factor to get decent looking results. Just now i extruded 110mm at 5mms and i measured about 20mm of filament left above the extruder.

Does it help to run the duet on 24v and control my 12v heatbed with a SSR?

Maybe someone can help me how to move onward from here.

MK2.5 Config.txt