Hi,
I am only familiar with Marlin on the Mendel90 but I can offer the following suggestion as to what might be happening.
Your Z endstop is positioned at the top e.g. 203mm and Sprinter knows to move upwards when homing. It appears, to me, that Sprinter thinks the Z home position is 0 when it should be e.g. 203mm.
You do not state whether normal Z movement is correct or if the printer attempts to move downwards during printing. You would have to let the printer attempt more than one layer to observe whether this is the case.
I would check your Sprinter configuration to determine whether it matches the physical hardware.
May I ask why you are using Sprinter on your Mendel90? The kits which nophead sells use Marlin on their Melzi controller. Even as a self-sourced build I would expect the use of Marlin.
Regards,
Neil Darlow
Edited 2 time(s). Last edit at 08/05/2015 11:18AM by neildarlow.
I try to write with consideration for all nationalities. Please let me know if something is unclear.
Printing with Mendel90 from fedora 25 using Cura, FreeCAD, MeshLab, OpenSCAD, Skeinforge and Slic3r tools.
