Manual Bed probing

Markus1406

Hi,

Recently my BLtouch broke and I want to switch to a IR sensor. For that I need to print a mount first.

Therfore I put in the M558 P0 in the config.g and commented out all other bltouch related stuff.

; Z-Probe
;M950 S0 C"exp.heater3"                         ; create servo pin 0 for BLTouch
;M558 P9 C"^zprobe.in" H5 F120 T6000            ; set Z probe type to bltouch and the dive height + speeds
M558 P0 										;manual bed leveling
;G31 P500 X-5.5 Y-32.9 Z1.10                       ; set Z probe trigger value.
;M557 X0:214 Y37:258 S25                       ; define mesh grid

If I now start a print I get the Manual bed probing prompt on the paneldue and the browser window.

I have a G28 in the start code.

Unfortunately, any press on the paneldue doesn't move the Z gantry and the buttons in the browser are grayed out.

I can push on ok on the panel due though to start a print high up in the air.

If I do a M564 H0 S0 before starting the print the buttons in the browser are not grayed out but the behaviour is the same. Nothing is moving.

I guess I am making a rudimentary error here. Can anyone help me out?

Cheers,
Markus

Phaedrux

What firmware versions are you running on the Duet and PD?

Markus1406

@Phaedrux

Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.4.6 (2023-07-21)

PanelDue is 3.4.1

Phaedrux

Can you try 3.5 RC7 on the PD?

https://github.com/Duet3D/PanelDueFirmware/releases/tag/3.5.0-rc7

Where are you initiating the print from?

Does it work if you use the manual homing buttons on the PD?

Markus1406

@Phaedrux

I was able to home it using the PD typing the G28 manually in the console and removing it from the start Gcode of the file.

I will try it using the new firmware when the print is done.

I initiated the print using the upload & start function as well as from the PD directly. both had the same outcome.

Markus1406

So homing using the buttons in the PD do the same as putting the G28 manually. That works.

I updated the firmware of the PD but this didn't do the trick.

Really seems like it doesn't like it when the G28 is in the start Gcode.

G21        ;metric values
G90        ;absolute positioning
M83        ;set extruder to relative  mode
M107       ;start with the fan off
G28 ;move X/Y to min endstops
;G29 S1 ;Mesh bed leveling
G0 X120 Y8 Z2 F4000
G1 Y-5 F800 ;move out of print volume
G92 E0
G1 F2000 E-1
G92 E0                  ;zero the extruded length for first drop
G1 F200 E25 ;Extrude 3mm
G92 E0 ; zero the extruded lengh
G0 X90 F4000
G1 Z0.2 ; Move Z axis to start line
G91                                    ;relative positioning
G1 X-60 E9 F500 ; start purge line
G1 Y5 E1.56 F500
G1 X25 E8 F500 ; finish purge line
G92 E0                  ;zero the extruded length again
G1 F{travel_speed}

As soon as I comment out the G28 in the start gcode and do the homing before everything is fine.

So as I was able to do my print this case is solved for me. However it feels like a bug. If you need any furhter assistance just let me know.

Cheers,
Markus

Phaedrux

Yes it is quite strange. Can you upload you homeall.g file? Also please share your full config.g and the results of sending M122 and M98 P"config.g".