Go to System and use the "upload system files button" in DWC2.

@TLAS For number 4. You could use this https://www.amazon.com/gp/product/B01HU7BX42 on the supplied wire connector.

@crchisholm DWC 2.0, it's under machine-specific. DWC 1.22.6, it's under settings->list items

@uca I dont't one. One way is when you home one, make sure the other isn't triggered. For example: in the homeall.g file: home x, move x away from the endstop so it's not triggered, home z. Just put a move away form the endstop for one, to use the other. You may have to connect them to both endstop connectors until the firmware can freely assign endstops.

@Roy Remove the bang, !, in front of the zprobe.in the M558.

@army61 One wire to the ground pin and the other to the signal pin. The 3.3v pin is not used.

Fan 1 defaults to thermostatic. Did you turn that off?

https://duet3d.dozuki.com/Wiki/Connecting_and_configuring_fans

To me, it looks like it is under extruding and the Z0 isn't close enough to the bed.

Update:

The pi4 was showing the low voltage lightning on the screen. Now powering from a 5vdc Meanwell.

@Phaedrux
@r123

Do a similation before printing to get the close to correct print time added to the gcode.

@deckingman With the 3.2 betas, don't rememeber if the RCs did it. I would randomly get the homing failed error when the G30 would be executed. the printer would heat up the bed, home X and Y, goto the z homing postion and fail. Duet 3 6HC with 1LC and PI4.

@piglet74 The start code I posted above works with PrusaSlicer 2.3 on a Duet 3 Mini+ 5, and a Duet 3 6HC, both running off a PI4.

It starts with a T-1, to deselect T0, which is set in config.g and start.g. When the G10 is sent, my T0 heats up to standby temp of 150C. After the G28 & G32, T0 is selected and the M116 waits for the temp to go to first_layer_temperature.

The standby temp, is to make sure any filament dribbles don't affect Z probe homing.

@wilriker Duet 3 Mini 5+ with PI4 and v3 4.3" Paneldue. Doesn't upgrade when uploading zip file and M997 S4 fails, Error: M997: Network-related commands are not supported when using an attached Single Board Computer.

The zip file works fine with my 6HC w/PI4 and v3 7" Paneldue.

Both Duets have 3.2.

@Chriss Have you updated the boot loader for the 1LC?
https://github.com/Duet3D/Duet3Bootloader/releases

@o_lampe I use denatured alcohol to clean my PEI surface.

For a while I been having wifi problems with my Duets, they would only work in a few locations. Router in same room as the printers. I have an ASUS RT-AC56, recently the mesh wifi died and a reboot of the router fixed it, and the Duet wifi problems disappeared at the same time.

@Alucardi For my Duet 3 6HC and Mini, bed power is OUT0 and the thermister is on TEMP0. For the Duet 3 6HC, don't forget to supply power to OUT0 Power In.

OUT1/TEMP1 are used for my T0.

@Alucardi I use OUT5 and OUT6 for two wire fans on mine. Make sure to set the voltage jumper for what your fans need.

@lael
PLAOffset:
; M-MAX (printer's name, I have two)
M291 P"PLA Offset" S0 T5 ; Show which one called
G31 P500 X25 Y45 Z1 ; set threshold and offsets - z offset is last one - increase to get closer to the bed
M207 S1.5 F6000 R0 Z0.03 ; firmware retraction

Firmware retraction may need changing for different filaments, so far they don't. I have another one for PETG, it needs a different Z offset. I call this in the start gcode in PrusaSlicer. Editing a macro is faster than rebooting the Duet.

@patterson6 Not neccesarily. You need to try different usb cables and usb ports.