Hello everyone, I was hoping I could start a thread where we could begin to gather some CNC specific configs and custom macros from all the experienced Duet CNC users. I've seen @dc42 's repository he created for the 3d printer side of things in the past and just wanted to see if there was interested in creating the same thing on the CNC side?

I'm just beginning my Duet 3 CNC build here, using a MB6HC with 3.2b2 loaded and have it controlling a 1000x1500 Workbee Leadscrew kit. I also have a couple 3d printer builds with Duet hardware so the initial config wasn't too bad. I'm getting to the spindle control stage to where I'm starting to ponder which macros I want to start to build. I've been reading through all the various posts on here and often times users mention creating macros to "perform this" or to "stop this" and thought it may be beneficial to get these great ideas all listed in one place?

I don't have much to contribute other than my config for the workbee at this time, but will include it to get the ball rolling. As users add their info I'll try and keep this post updated with a sort of

"Table of Contents"

1. Workbee CNC 1050 Config.g

Otherwise, if this repository already exists somewhere and I've just completely overlooked it, I will happily bow out and this thread can be removed!

I'm going to guess it has something to do with the speed that the Duet turns your laser tube on and off compared to the GRBL controller. You can fine tune this adjustment in Lightburn with the "Scanning offset adjustment". It's a pretty straightforward process and I imagine you'll be surprised at the results.

Scanning Offset Adj. - How-To

Unless you just like the ease of use, or convenience of buying one online, there's really no need. I use a small copper clad proto board that I never etched. I cut it to a handy shape and soldered a wire to it. I have a banana plug that I use to plug it in to a panel mounted jack, instead of the alligator clip.

Basically, you can use anything that's conductive and that has an easily measurable Z height. Heck, I've used tin foil wrapped around the part when I wanted to find exact Z of a previously failed part in order to continue where I left off, lol.

The config I posted in the config repository on the main page is for my 1050 workbee using a mb36hc as well. You can compare it to yours or copy the I/O wiring and upload it as-is and give it a shot. I definitely recommend keeping the stepper-to-leadscrew couplers loose while testing. You can confirm motion in all directions, endstop activation, home.g files, all without the possibility of crashing anything.

Do you get any error messages in the web interface when attempting moves?

@dbruce-ae05 I don't use a specific Macro for that I just have my homey.g file setup as shown below and then use the home buttons in the DWC.

; homey.g
; called to home the Y axis
;
G91               		 ; relative positioning

; split Y motor control to Y and U
; for it to work we have to show U (param P4) in the UI
M584 Y0.2 U0.1 P4

G1 H1 Z5 F6000   		     ; lift Z relative to current position
G1 H1 Y-1005 U-1005 F1800            ; move quickly to Y axis endstop and stop there (first pass)
G1 H2 Y5 U5 F6000    	             ; go back a few mm
G1 H1 Y-1005 U-1005 F360 	     ; move slowly to Y axis endstop once more (second pass)
G1 H1 Z-5 F6000                      ; lower Z again

M584 Y0.2:0.1 P3			 ; back to combined axes and hidden U
G90               			 ; absolute positioning

@jay_s_uk Definitely understand that!

Hi @jay_s_uk , have any luck with your setup? Just curious if the scanning offset adjustment helped out any.

I'm going to guess it has something to do with the speed that the Duet turns your laser tube on and off compared to the GRBL controller. You can fine tune this adjustment in Lightburn with the "Scanning offset adjustment". It's a pretty straightforward process and I imagine you'll be surprised at the results.

Scanning Offset Adj. - How-To

Unless you just like the ease of use, or convenience of buying one online, there's really no need. I use a small copper clad proto board that I never etched. I cut it to a handy shape and soldered a wire to it. I have a banana plug that I use to plug it in to a panel mounted jack, instead of the alligator clip.

Basically, you can use anything that's conductive and that has an easily measurable Z height. Heck, I've used tin foil wrapped around the part when I wanted to find exact Z of a previously failed part in order to continue where I left off, lol.

Sure, that sounds good. If anything gets posted here, I'll can start adding there. Would it be possible to have a dedicated CNC folder?

Workbee CNC 1000 x 1500 Leadscrew Kit
-Dual Y motors with dual endstops

; Configuration file for Duet 3 (firmware version 3)
; executed by the firmware on start-up
;
; General preferences
G90                                   ; send absolute coordinates...
M83                                   ; ...but relative extruder moves
M550 P"1050-Workbee"                  ; set printer name

;DUAL Y
M584 X0.0 Y0.1:0.2 Z0.3 U0.2 P3

; Drives
M569 P0.0 S0                          		; physical drive 0.0 goes forwards
M569 P0.1 S0                          		; physical drive 0.1 goes forwards
M569 P0.2 S0                          		; physical drive 0.2 goes forwards
M569 P0.3 S0                          		; physical drive 0.3 goes forwards

M350 X16 Y16 U16 Z16 I1               		; configure microstepping with interpolation
M92 X400.00 Y400.00 U400.00 Z400.00      	; set steps per mm
M566 X300.00 Y300.00 U300.00 Z300.00        ; set maximum instantaneous speed changes (mm/min)
M203 X3000.00 Y3000.00 U3000.00 Z3000.00    ; set maximum speeds (mm/min)
M201 X150.00 Y150.00 U150.00 Z150.00        ; set accelerations (mm/s^2)
M906 X2400 Y2400 U2400 Z2400 I30            ; set motor currents (mA) and motor idle factor in per cent
M84 S30                               		; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 U0 S1                      	; set axis minima
M208 X1000 Y1500 U1500 Z60 S0               ; set axis maxima

; Endstops
M574 X1 S1 P"^io6.in"                ; configure active-high endstop for low end on X via pin !^io0.in
M574 Y1 S1 P"^io1.in"                ; configure active-high endstop for low end on Y via pin !^io1.in
M574 U1 S1 P"^io2.in"                ; configure active-high endstop for low end on Y via pin !^io1.in
M574 Z2 S1 P"!io3.in"                ; configure active-high endstop for high end on Z via pin !io3.in

; Z-Probe
M558 P8 C"!io7.in" H10 F120 T3000      ; Z probe connected to E0 endstop input
G31 Z1.5
;M558 P0 H5 F120 T6000                 ; disable Z probe but set dive height, probe speed and travel speed
;M557 X15:215 Y15:195 U15:195 S20      ; define mesh grid

; Heaters

; Fans

; Tools
M563 P0 F0                            ; define tool 0
G10 P0 X0 Y0 U0 Z0                    ; set tool 0 axis offsets
G10 P0 R0 S0                          ; set initial tool 0 active and standby temperatures to 0C

; CNC
M950 F8 C"nil"						   ; free up fan out 8
M950 F7 C"nil"						   ; free up fan out 7
m950 P3 C"out8"					       ; define Coolant Pump Relay
M453 C"out9+!io4.out+out7" R24000 T0   ;configure CNC mode and set PWM+ON/FWD+REV R sets max spindle RPM
G54										;Use Workspace coordinate system
M564 S0 H0								;Allow movement without homing (without axis maxima)
M575 P1 S1 B57600						;Configure paneldue output for CNC Pendant Use

; MISC Outputs
;m950 p0 C"!io4.out"                   ; define VFD Run-FWD
;m950 p1 C"!io5.out"					  ; define VFD REV




; Custom settings are not defined

Hello everyone, I was hoping I could start a thread where we could begin to gather some CNC specific configs and custom macros from all the experienced Duet CNC users. I've seen @dc42 's repository he created for the 3d printer side of things in the past and just wanted to see if there was interested in creating the same thing on the CNC side?

I'm just beginning my Duet 3 CNC build here, using a MB6HC with 3.2b2 loaded and have it controlling a 1000x1500 Workbee Leadscrew kit. I also have a couple 3d printer builds with Duet hardware so the initial config wasn't too bad. I'm getting to the spindle control stage to where I'm starting to ponder which macros I want to start to build. I've been reading through all the various posts on here and often times users mention creating macros to "perform this" or to "stop this" and thought it may be beneficial to get these great ideas all listed in one place?

I don't have much to contribute other than my config for the workbee at this time, but will include it to get the ball rolling. As users add their info I'll try and keep this post updated with a sort of

"Table of Contents"

1. Workbee CNC 1050 Config.g

Otherwise, if this repository already exists somewhere and I've just completely overlooked it, I will happily bow out and this thread can be removed!