Looking for some help with some settings...

I have a home built coreXY D-Bot style printer with the Duet3D Maestro (which I love!) For some reason I used to be able to do this, not sure what has changed. I am having an issue when I pause the print in order to do a manual filament change mid-way through the print. Here is what happening...

1. Press PAUSE in the web interface and the print head moves up 5mm and goes to X0, Y0 as intended.
2. Manually eject the filament and load new filament.
   Here is were things go wrong...
3. I press RESUME in the web interface and for some reason the print head moves down toward the print bed before making its way back to where it left of on the print (it used to just return to the print without moving the Z axis down.

Is there a way to remove that Z axis move? Any ideas? Thanks in advance!

Youtube Video link here

Here is my pause.g and resume.g...

; pause.g
; called when a print from SD card is paused
;
; generated by RepRapFirmware Configuration Tool v2 on Tue Jun 25 2019 20:55:23 GMT-0400 (Eastern Daylight Time)
M83            ; relative extruder moves
G1 E-10 F3600  ; retract 10mm of filament
G91            ; relative positioning
G1 Z5 F360     ; lift Z by 5mm
G90            ; absolute positioning
G1 X0 Y0 F6000 ; go to X=0 Y=0

; resume.g
; called before a print from SD card is resumed
;
; generated by RepRapFirmware Configuration Tool v2 on Tue Jun 25 2019 20:55:23 GMT-0400 (Eastern Daylight Time)
G1 R1 X0 Y0 Z5 F6000 ; go to 5mm above position of the last print move
G1 R1 X0 Y0 Z0         ; go back to the last print move
M83                  ; relative extruder moves
;G1 E10 F3600         ; extrude 10mm of filament

I have commented out the last line to "extrude 10mm of filament" since i don't need it to do that.

@phaedrux

Awesome!!!

While my other printers (not CoreXY) have the homing position and the 0,0 origin at the back/right of the printer...front left works for me too, kinda the same thing if you rotate the whole printer 180 degrees.

Following the directions from the link that you gave me determined that my motors were swapped.

Homing now positions the carriage at the rear/left or X0, Y300 which is where it needs to be for Home, sending the carriage to the origin at 0,0 places it at the Front / Left where it needs to be!

Thanks for pointing me in the right direction and helping me sort this out.

J

Hello all!

I am a bit confused setting up the home position for my printer. I am using the RepRapFirmware Configuration Tool to create my config files.

Currently when I home the machine the X homes correctly and the Y moves in the opposite direction of the endstop, ideally I would like the X0, Y0 to be at the right/rear of the machine.

My printer size is X=273 and Y=300 endstops are located X=high (left of machine) and Y=low (rear of machine).

When I home X the printer the carriage moves to the left touches the endstop and sets the X position to X273. Therefore, if I send the carriage to X0 it moves to the right side of the machine. Which is correct.

When I home Y the printer the carriage moves to the front of the machine (away from endstop) forcing me to stop the machine to avoid crashing with the front of the machine. The homing direction needs to move towards the low end or rear of the machine.

Does this make sense? Seems the RepRapFirmware Configuration Tool is not creating the config for the Y endstop at the Low end correctly. I attached the config files.

Thanks!

3_1560819696457_homez.g
2_1560819696457_homey.g
1_1560819696457_homex.g
0_1560819696456_config.g
0_1560819724540_homeall.g

@dc42

Hello!

Checked what you said and it solved my problem.

For some reason the cables on the endstops were ALL wired incorrectly (and all were different in the way they were connected) so I checked everything with a multi meter and everything is no correct.

Also i needed to set them to normally open instead of normally closed.

Everything is now homing perfectly as it should. On to the next bump!

Thank you for your help!

@veti thanks for the reply.

I tried that already and had the same results.

I just did it again and uncommitted those lines in home all.g and homes.g config files...same thing.

The z moves up, triggers the z endstop then the machine disconnects from the web interface...I then need to manually lower the z axis till the endstop is no longer triggered so the interface will reconnect.

Thanks

Here you go.

4_1560714545473_homez.g
3_1560714545473_homey.g
2_1560714545473_homex.g
1_1560714545473_homeall.g
0_1560714545473_config.g

Thanks!

Hello. No z probe, I intend to level the bed manually for now.

Hello all!

I built a CoreXY machine and have just started configuring my Duet3D Maestro. I have been able to figure out most of the config as I set up the machine but I am having issues figuring out the homing. The machine is 300x300x200, no bed probing of any kind.

My machine is set that the X homes to the left, the Y homes to the rear, and the Z homes up since the bed moves down as it prints.

I set up my config using the RepRapFirmware Configuration Tool thats online.
When I home the Z axis the machine moves up touches the endstop, then disconnects...there is no back off, the endstop is treated as a limit stop not a homing switch.

Then when I home the X or the Y axis the carriage moves a bit in the correct direction, never touches the limit switch and marks the axis as being homed.

Can someone point me in the right direction to find the answers I need to set up my homing issues? or offer some tips to get the config correctly working.

Thanks in advance!