Topics created by palmhoej

Sorry for the late reply, work have been bunkers lately.

So it turns out that the problem is probably a lose connection in the wire. I tried to switch the wire to the two Z-axis, but found out that there was not enough length in the wires to do this, then put them back in their respective stepper.... lo and behold, it is working again.

Definitely need to order new cables.

@palmhoej Hi, was there any progress? I've the same problem, and I've made some test about that:
https://forum.duet3d.com/topic/11093/bltouch-m558-accuracy-test-strange-behaviour

Ok i will update it. Shit i think you are right. I can see that i have an M584 call in there... but if i delete this, then my second z-axe dos not work.... any idea?

Your help is very appreciated ✌ ☺

Here are my z-axis homing code:

; homez.g
; called to home the Z axis
;

; Lift Z relatively to current position
G91
G1 Z2 F6000 S2

; split Z motor control to Z and U
; for it to work we have to show U (param P4) in the UI
M584 Z2 U3 P4

; Move Z and U down until the switches triggers
G1 S1 Z-205 U-205 F1000 S2
; back to combined axes and hidden U
M584 Z2:3 P3

; Back to absolute positioning
G90

; Tell the firmware where we are
G92 Z0

; lift Z after probing
G91
G1 Z3 F1000 S2
G90

;--------------- repeat slowly----------

; split Z motor control to Z and U
; for it to work we have to show U (param P4) in the UI
M584 Z2 U3 P4

; Move Z and U down until the switches triggers
G1 S1 Z-205 U-205 F50 S2
; back to combined axes and hidden U
M584 Z2:3 P3

; Back to absolute positioning
G90

; Tell the firmware where we are
G92 Z0

; lift Z after probing
G91
G1 Z10 F1000 S2
G90