Z Movement only up

Samat

Hi
I set up my Fabricator mini in the new Repetier Host.
Now every Z movement only goes up.
So the homing sends it up, until it bumps into the ceiling. When I send manual commands, whether up or down it moves up.

I tried to invert the Z movement in the printer settings and to set the homing position to 80mm instead of 0.

Anyone got ideas to fix this?

Repetier

If homing already fails it is a firmware config or hardware error.

Stepper drivers have a pin for direction. If that does not work - either connection broken or chip it will only go in one direction. One simple test is to use socket for second extruder and configure firmware accodingly.

Samat

Hey, sorry for being quiet.
I have ever done any hardware alterations on my printer.
How do I find the pin configurations.

Also, any idea, why it worked on older versions of repetier?

Repetier

Maybe first try mid height if z can go up/down. Even if it goes wrong direction it should go both direction if you remember that it starts at Z = 0, so move manually so you have place, increase Z see direction, reduce Z see direction. If both go same direction it is a hardware problem. Loose connection, defect driver, defect pin are possible. Essentially everything that has to do with the direction pin.

Homing/motor settings from older repetier should work. They never changed.

Samat

No, they didn't.
I checked with an older version and the same problem occurs.
So it's hardware, alright. I have no idea how to change a driver or board, let alone firmware. I hoped, I could change a minus to a plus somewere.
Weird, that it broke at the same time, I changed versions.

Well thank you for helping. :)

Repetier

If there is a unused extruder socket you could configure firmware to use that as z axis. Then you only need to plug in motor wires there.