well that setup file was already loaded in Cura.
since I suspected that the Z motor was spinning in the wrong way I expected that inverting Z direction putting a “-” on each instance using a code editor could work…
but it didn’t indeed..
although i’m using a standard threaded bar (8mm) the step value looks to be ok, it moves exactly 1mm or 10 jogging with buttons.
my only modifications to the code are about the maximum Z feedrate: 6mm/s otherwise the motor hangs and gets stuck.
speed movements in Cura are set to 6 for all the axis for this reason, that’s quite annoying cos when the hotend moves on already printed parts tends to melt them again.
at this point I guess this could be related to the moving problem.
as I see that many people posted videos of simlar working setups I’m sharing mine hoping into an enlighting advice.
my setup for Z axis is:
DRV8825 DIV:1
Zstep: 147
8mm threded bar coupled with the mount included in the parts folder.
max feedrate: 6mm/s
thanks all 🙂