Final settings (for future use by anyone interested):

config.g
-----------------------------------------
; Drives
M584 X0:3 Y1:4 Z2 U3 V4 P3; Three axis visible

; Tools
M563 P0 D0 

; Drive direction
M569 P0 S1                       ; Drive 0 goes forwards
M569 P1 S1                       ; Drive 1 goes forwards
M569 P2 S1                       ; Drive 2 goes forwards
M569 P3 S1
M569 P4 S1

; Steps and Speed
M92 X80.00 Y80.00 U80.00 V80.00 Z4000.00 ; Set steps per mm
M566 X900.00 Y900.00 U900.00 V900.00 Z12.00; Set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 U6000.00 V6000.00; Set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 U500.00 V500.00; Set accelerations (mm/s^2)
M906 X800.00 Y800.00 Z800.00 U800.00 V800.00 I30; motor currents (mA) and motor idle factor
M84 S30  ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 U0 V0 S1                 ; Set axis minima
M208 X600 Y400 Z100 U600 V600 S0           ; Set axis maxima

; Endstops
M574 X1 Y1 U1 V1 S0               ; Set active low and disabled endstops

homex.g
----------------------------------------
M584 X0 U3 P5; split steppers, 5 axis visible
G91 ; relative moves
G1 X-650 U-650  F450 S1 ; fast homing X and U in parallell
;G92 X0 U0 ; Make adjustments to square axis here
M584 X0:3 P3; join steppers, 3 axis visible
G90

dsmudger

I would say these are major steps

• Homing switches (I use a microswitch for X and an old dc42 IR sensor for Z and Y)
• Make adapters or get new cables to stepper motors
• Make adapter or new cable for hot end
• Power supply (I am using the original Cetus power supply)
• Configure the Duet3d (steps/mm and heater values you can see above, the rest I think may vary in your case)

Original connectors can be forced into the Duet board, but I ended up making adapters both for the steppers and the hot end. Pictures below show before the adapters during "proof of concept phase". On the hotend it self I made a new board using experimental circuit board and matching connectors. There was too much interference in the ribbon cable for the signal from the IR board so I added an ethernet (twisted pair) cable for that.

If there are any questions I would be happy to help.

After a print my printer stands pre-heated (at 100C) in standby. When I start slicing my next print I click the heater in DWC to get to active and prepare for printing temp.

But going from standby to active resets all the temps to zero.

I'm a doing something wrong, or is it not ment to be used like this?

Or maybe it is a bug...

Duet Web Control 2.0.0-RC6

I want to share may latest project, a detachable Panel Due caring using RJ45 connectors.

I am building a Duet controlled MPCNC and to be able to move my panel due between my printer and the upcoming CNC. I used RJ45 connectors from a server room patch panel.

I have tested with different LAN cable lengths, 3 m works but not 10 m , it communicated but the touch control did not respond. 3 m will be more than enough.

The hole is for an emergency stop button to be used with the CNC. This is a prototype printed printed with a 0.6 nozzle and 0.4 layer height so it is not the prettiest print.

Happy with the solution so far.

@cookie

I'm using the original cetus thermistor. It works well after finding the correct values for it.

I do not think a negative B value is common.
M305 P1 R4700 T112 B-425 C7.060000e-8

I have bees adapting my printer to the new Hemera extruder from E3D.

The included cooling fan for the hotend screams pretty bad at full rpm. My first thought was to order a quieter fan, such as a Noctua.

But before ordering I did some tests and with good results.

I using the PWM settings in M106 the command I configured the fan to only start above 80 degress and max out at 220 degrees with a speed of 170 (of 255) .

This has worked fine for me with no seemingly issues with heat creep. The longest print so fas has ben about three hours.

So I have not had the need to order a new fan, thanks to configuration. That's nice

Have any one else tested anything similar?
What is your experience?

M106 P1 B1 T80:220 H1 X170

(This needs a firmware version supporting the X parameter, >= 2.02)

@bearer That is the hotend terminator.

I am thinking of upgrading to 24 volt. My duet is a 0.85 and I wonder if it is possible to use a buck converter to lower the voltage to 12v on the positive side of the fans.
I have read about this for new duets but have not found anything regarding the 0.85.

Note that the positive side of the fans are NOT supposed to be copnnected to the Duet, just directly to the buck converter.

@bearer That is the hotend terminator.

There seems to be an issue with changing (increasing) the hot end temperature during print. Doing so causes a heater fault and a stopped print.

I have not experienced this in previous versions.

Board: Duet 0.85
Firmware: RepRapFirmware for Duet 1.26 (2019-12-13b1)

I have bees adapting my printer to the new Hemera extruder from E3D.

The included cooling fan for the hotend screams pretty bad at full rpm. My first thought was to order a quieter fan, such as a Noctua.

But before ordering I did some tests and with good results.

I using the PWM settings in M106 the command I configured the fan to only start above 80 degress and max out at 220 degrees with a speed of 170 (of 255) .

This has worked fine for me with no seemingly issues with heat creep. The longest print so fas has ben about three hours.

So I have not had the need to order a new fan, thanks to configuration. That's nice

Have any one else tested anything similar?
What is your experience?

M106 P1 B1 T80:220 H1 X170

(This needs a firmware version supporting the X parameter, >= 2.02)

Issue solved!

That G10 offset did the trick, must have added that as some sort of test and forgot about it.

Thank you for quick help, keep on printing!

the G10 seems to fix it. I will run a few tests. But it seems promising.

The motor current is ok, that axis has an original Cetus stepper motor.
https://forum.duet3d.com/topic/7709/controlling-a-cetus3d-with-duet3d-0-8-5?_=1577390899381

There is something strange going on with the homing and max/min of the axis. The coordinate system seems to shift "some times" not always, +20 mm on X axis. I am pretty sure I had the same behavior on Y-axis a few days back. It does not accumulate over several prints.

Homing does not fix it. If I move the printhead to where I want zero to be and send G92 X0 it does not help either. The printer still reports X20.
G92 X21 works and sets X21.

As a test I have copied all homing code from homex.g, homey.g and homez.g into homeall.g and that does NOT give the same result as home each axis by it self. The homeall.g causes an unwanted shift, some times.

Only reboot seems to resolve this. I have also (during test of modifying homing files and buliding them from nothing adding one axis at the time) that if code for homing Z is missing from homeall.g it homes Z anyway, bug or feature, I dont know. Related? I dont know...

Please advise, what to try.

Firmware version 1.26 running on Duet 0.85 (2019-12-13b1). As far as I know it turned up after updating the firmware.

/Tomas

My end print G-code:

M109 ; switch off extruder
M191 ; switch off heated bed
G91    ; relative positioning
G1 Z5 F6000 S2 ; lift Z relative to current position
G90   ; absolute positioning
G1 X10 Y175 ; move bed to access print
;M1 ; end of program
M929 S0  ; stop logging

My homeall.g

; homeall.g
G91                     ; relative positioning
G1 Z6 F6000 S2          ; lift Z relative to current position
G1 S1 X-200 Y-200 F2500 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 X5 Y5 F6000          ; go back a few mm
G1 S1 X-185 Y-185 F360  ; move slowly to X and Y axis endstops once more (second pass)
G90   ; absolute positioning

G1 X66 Y90 F10000 ; go to bed probe point and home Z
G30                     ; home Z by probing the bed

G1 F10000 X0 Y0

config.g

; Configuration file for Duet 0.8.5 (firmware version 1.21)
; executed by the firmware on start-up
; generated by RepRapFirmware Configuration Tool v2 on Tue Nov 13 2018 18:54:17 GMT+0100 (Central European Standard Time)
; General preferences
G90                                      ; Send absolute coordinates...
M83                                      ; ...but relative extruder moves

; Network
M550 PC                              ; Set machine name
;M552 P0.0.0.0 S1 ; DHCP + Enable
M551 Preprap                             ; Set password
M552 P192.168.0.65 S1                    ; Enable network and set IP address
M553 P255.255.255.0                      ; Set netmask
M554 P192.168.0.1                        ; Set gateway
M586 P0 S1                               ; Enable HTTP
M586 P1 S0                               ; Disable FTP
M586 P2 S0                               ; Disable Telnet

; Drives
M569 P0 S0 V100                              ; Drive 0 goes forwards (X)
M569 P1 S1 V100                               ; Drive 1 goes backwards (Y)
M569 P2 S1 V100                               ; Drive 2 goes forwards
M569 P3 S1 V100                               ; Drive 3 goes forwards

M584 X0 Y1 Z2 ; Map drives to letters, Y=>0, X=>1, Z=>2
;M92 X79.72 Y79.72 Z79.72 E118.00       ; Set steps per mm; used to be E127
M92 Y88.681 X79.72 Z79.72 E409.00       ; Set steps per mm; used to be E127, 118 for CETUS

M566 X280.00 Y280.00 Z90.00 E220.00      ; Set maximum instantaneous speed changes (mm/min)
M203 X28000.00 Y28000.00 Z15000.00 E10000.00  ; Set maximum speeds (mm/min)
M201 X200.00 Y200.00 Z100.00 E350.00      ; Set accelerations (mm/s^2)
M906 X340.00 Y1000.00 Z500.00 E800.00 I30 ; Set motor currents (mA) Ormerod motor X-axis
M84 S30                                  ; Set idle timeout

; Axis Limits
M208 X0 Y-22 Z0 S1                         ; Set axis minima
M208 X184 Y185 Z180 S0                   ; Set axis maxima

; Endstops
M574 X1 S0                               ; Set active low endstops
M574 Y1 S0
M574 Z1 S2                            ; Set endstops controlled by probe
M558 P1 H5 F250 T6000                    ; Set Z probe type to unmodulated and the dive height + speeds

; IR SENSOR
G31 P538 X0 Y0 Z1.78                     ; Set Z probe trigger value, offset and trigger height

M557 Y50:180 X10:165 S40                 ; Define mesh grid
G29 S1 					; Load stored mesh grid from SD Card

; Heaters
M140 H-1                                 ; Disable heated bed
M305 P1 R4700  T100000 B4725 C7.06e-8 ; Hemera extruder
M143 H1 S280                             ; Set temperature limit for heater 1 to 280C

; Fans
M106 P1 B1 T80:220 H1 X150 S255 ; heatsink fan, turn on at 80 C, max speed at 180 degrees
M106 P0 B1 S0 X255 ; turn off part cooling fan at startup, maxspeed 255 of 255

; Tools
M563 P0 D0 H1                            ; Define tool 0
G10 P0 X20 Y22 Z0                          ; Set tool 0 axis offsets
G10 P0 R0 S0                             ; Set initial tool 0 active and standby temperatures to 0C

M501

@t3p3tony thank you.

@dc42

I am probably slow here but I have read the hardware overview and it is not clear if a Raspnerry Pi I needed to use the web interface?

Has the duet 3 network.connectivity on it's own, wired or wireless?

The hardware overview states the following, and what is referred as "It" marked in bold? The duet 3 or a Raspbeery Pi.

The Duet 3 mainboard has a dedicated high speed SPI bus to a single board computer (SBC). The reference implementation is a Raspberry Pi 3B or newer. The SBC provides the user interface (via a browser based control application called Duet Web Control, or a third party application). It also provides a network interface via the local network or VPN depending on how it is configured.

The "Hardware overview" of the Duet 3 says "Ethernet for future expansion", I am guessing that this is a typo and the board has an ethernet connection not using WiFi?