I am using the “Nema 17 70Oz/in+” stepper motors and the power supply from the “MPCNC Build Kit - Primo Version” and the “SKR Pro1.2, 5x 2209 drivers, TFT35 E3 V3 -flashed-” as a control board.
The z axis seems to have trouble going up when I use manual control on repetier host from my laptop. it makes a clicking noise and then sounds like it’s trying to move but doesn’t do anything unless I touch it then it will move slightly.
It makes the same noise when running the crown test and doesn’t raise up between lines.
I have basically the same setup… check the screws holding the nut down are not too tight. Also, lube the screw and make sure it turns freely with power off. Then also make sure the bearings are not too tight preventing movement… by manually moving the z axis up and down. May need to manually turn the screw
As Matt’s suggestions indicate, this is most likely a mechanical issue. The sound in the video is different than the typical lost-steps sound. Check the grub screws holding the Z stepper to the connector.
Though this is likely a mechanical issue, make sure you’ve set up your SKR Pro as indicated in the V1 instructions. I’m unsure of the exact behavior if you get it wrong, but there are specific instructions for leaving the jumpers in place for Z1, reworking the jumper for Z0, and disabling sensorless homing.
Ah, yes, ditto on checking the grub screws are tight and not slipping on the lead screw or stepper shaft. I honestly don’t think that was the sound, but was hard to hear it on my phone.
I can turn it by hand to raise and lower it easily but I double checked the grub screws and the set screws on the motor shaft assembly just to make sure.
I double checked my jumpers, I am using the z0 port for z axis.
I then realized this morning that the motor is turning to lower the axis when I give it an up or down command.
I tested it without the extension wire and it worked properly so I remade my extension wire and it’s working now. Double and triple check your wiring when you make your own stuff and don’t work too late into the night I guess lol
Wiring issues are always frustrating. Partially because we just have to eliminate everything else. And partially because you can be sure they are fine and they are still the problem.