@jujojujo_2003 said in Sensorless homing not working:

M915 X S-20 R0 F0 H40

I use:
M400
M913 X70 Y70 ; drop motor current to 70%
G91 ; relative positioning
G1 H2 Z10 F6000 ; lift Z relative to current position
G1 H1 X-320 F12000 ; move quickly to X axis endstop and stop there (first pass)
G1 H2 X15 F1800 ; go back a few mm
G1 H1 X-320 F12000 ; move slowly to X axis endstop once more (second pass)
G1 H2 Z-10 F6000 ; lower Z again
G90 ; absolute positioning
M400
M913 X100 Y100 ; return current to 100%
Which works on my CoreXY I don't have the M915 in the homex or y.g

@Phaedrux Thanks, I will amend my config.g, not that it seems to have any impact on operation.

@Cinny1988 Change it over I guess either H3 or move pin

@Cinny1988 Are you on the correct pin? Your picture looks like you are not on H5. Mine is on pin 9 lower connector you look like you are on H3

This works for me on V3.2.2 Duet Wifi and BLTouch .

; Endstops
M574 X1 Y2 S4
M574 Z1 S2 ; configure Z-probe endstop for low end on Z

:Z-Probe
M558 P9 C"^zprobe.in" H5 F120 T3000 ; FW v3 BLTouch connected to Z probe IN pin
M950 S0 C"exp.heater5"
G31 P500 X-32 Y13 Z2.9 ; Set Z probe trigger value, offset and trigger height
M557 X15:225 Y15:225 S20 ; Define mesh grid
M915 X Y S5 R2

; Disable heaters H3-H7 to free up pins
M950 H3 C"nil"
M950 H4 C"nil"
M950 H5 C"nil"
M950 H6 C"nil"
M950 H7 C"nil"

No. 2 5 14. I would like to keep the G32 auto bed level as a fast check on anything moving when removing a stuck print. I have a CoreXY and it can slip the 2 motors out of position.