Laser Works (but not from lightburn)

DeltaCon · 9 May 2020, 11:31

Looks like this question would be better placed in the lightburn forum, but my guess is the engraving duet users gather here. Duet is still pretty underrepresented in the lightburn forums...

I have my engraver setup working. That is, G1 Sxxx commands make the laser move and burn. The lightburn gcode output however switches on with M3 Sxxx and does not give Sxxx parameters in the G1 command. I know some people are using Duets AND lightburn to engrave. My question: how did theu dolve this?

Thanks!

dc42 · 9 May 2020, 11:33

Change the Lightburn output settings. I think the settings for Smootheware and Grbl use G1 S1 commands.

DeltaCon · 9 May 2020, 12:08

Smoothieware profile refuses to connect to the board. No idea why, all other profiles I tried have no problem on the same baudrate.

Grbl only issues an S parameter when it changes (presumes it to be sticky)

A Former User · 9 May 2020, 12:22

smoothie mode may require marlin compatability mode, and sticky S parameter should work with a recent firmware set to laser mode?

DeltaCon · 9 May 2020, 12:29

@bearer said in Laser Works (but not from lightburn):

smoothie mode may require marlin compatability mode, and sticky S parameter should work with a recent firmware set to laser mode?

I can find no such Marlin Compatibility mode in the Lightburn device settings.
And the sticky S obviously does not work in RRF 3.11RC (unless it has to be enabled somehow? The laser only burns during the first move.

; LightBurn 0.9.11
; GRBL-M3 (1.1e or earlier) device profile, current position
G00 G17 G40 G21 G54
G91
; Cut @ 3000 mm/min, 10% power
M9
M5
G0X3.64Y2.28
M3
G1X-0.71Y0.65S25.5F3000
G1X-0.65Y0.71
G1X-0.57Y0.77
G1X-0.5Y0.82
G1X-0.42Y0.88
etc...

A Former User · 9 May 2020, 13:14

my bad, marlin compat is a RRF thing https://duet3d.dozuki.com/Wiki/Gcode#Section_M555_Set_compatibility

and you're using https://duet3d.dozuki.com/Wiki/Gcode#Section_M452_Select_Laser_Printer_Mode ?

dc42 · 9 May 2020, 13:28

@DeltaCon said in Laser Works (but not from lightburn):

Smoothieware profile refuses to connect to the board. No idea why, all other profiles I tried have no problem on the same baudrate.

Grbl only issues an S parameter when it changes (presumes it to be sticky)

Are you trying to connect to the Duet via USB, instead of uploading via HTTP and running the job from SD card?

DeltaCon · 10 May 2020, 10:15

@dc42 said in Laser Works (but not from lightburn):

Are you trying to connect to the Duet via USB, instead of uploading via HTTP and running the job from SD card?

Yes indeed I am. Reason for that is to be able to use Lightburn controls on my laptop beside the machine. I am not familiar enough with my machine yet to have it working "on it's own". And DWC has way to many laser-engraving-unrelated options. I would love a webcontrol that was more CNC related though. I also would love Lightburn to have ethernet connections But I am aware that Lightburn can save the gecode and I could upload it through DWC. Feels like more steps that necessary though.

DeltaCon · 10 May 2020, 10:19

@bearer said in Laser Works (but not from lightburn):

my bad, marlin compat is a RRF thing https://duet3d.dozuki.com/Wiki/Gcode#Section_M555_Set_compatibility

Oh, okay, I'll try that.
Through the Lightburn forums I was also told that the next lightburn release will havean "inline" option in the Marlin profile that does exactly what we want:

So that's great too!

and you're using https://duet3d.dozuki.com/Wiki/Gcode#Section_M452_Select_Laser_Printer_Mode ?

Hmm, I see where you are going with this... I omitted the S1 parameter in the M452.
That should do the trick... Thanks for this direction. There are so many thing to account for!

DeltaCon · 10 May 2020, 10:37

Tested the S1 parameter in M452 and that works. Thanks @bearer for showing me.

Extra questions for the experts:

What is a nice clean method for having a nice clean low-power dot for focussing purposes? Anyone have a ready to use macro for that?

And the second one is about the F parameter in M452. The specs of my lasermodule show a max PWM frequency of 20000Hz. Should I use that or is that some nonsense value? I see many people using different values here, but what values actualy make sense?

Jonty 0 · 19 Dec 2022, 13:17

@DeltaCon Hey Guys, I'm trying to get this working with my laser as well and Lightburn is creating a G9 code in the Marlin version which is making it not work. Any ideas what I can do here? Running RRF 3+ on Duet 2 wifi - Thanks!

jay_s_uk · 19 Dec 2022, 13:28

@Jonty-0 where are you seeing that?
I can generate gcode which works fine (apart from M7 and M8 not being implemented in RRF but they just get ignored)

Jonty 0 · 19 Dec 2022, 15:36

@jay_s_uk Hi Jay, so I tried to run the gcode file and it throws an error straight away. When I look in console it says Warning: M9: Command is not supported
Cancelled printing file: etc/.. xxx/.xx
Error: G0/G1: Target Position outside machine limits.

Not sure why it's out of machine limits either but I was going to get to that next!

Thanks.

jay_s_uk · 19 Dec 2022, 15:37

@Jonty-0 can you post an example file?
check the gcode tab of device settings as well

I usually manually home my laser and then use the workplace offsets to set the material position

Jonty 0 · 19 Dec 2022, 15:57

@jay_s_uk Thanks mate. I think it's to do with the positioning somehow - I agree with you that - I think it's ignoring the M9 command but failing on machine limits.

I've homed my workbee, then moved it away from the corner a bit and set my work co-ordinates.

I think I'm setting lightburn wrong somehow. I'll have a play and come back to you! Thanks.

Jonty 0 · 19 Dec 2022, 16:14

@Jonty-0 - OK I got it moving by playing with the positioning settings - so it's going round and round but laser not coming on. Here's an exampe of the gcode generated. Any ideas?

code_text; LightBurn 1.3.01
; Marlin device profile, absolute coords
; Bounds: X158.39 Y87.67 to X219.61 Y142.33
G21
G90
; Cut @ 1000 mm/min, 100% power
M9
M05 
G0 X158.39 Y98.544 F0
G0 Z0
; Layer C00
M03 S255
G1 X160.587 F1000
G1  Y105.636
G1  Y106.185
G1 X160.64 Y106.73
G1 X160.732 Y107.27
G1 X160.868 Y107.802
G1 X160.991 Y108.107
G1 X161.146 Y108.394
G1 X161.33 Y108.661
G1 X161.541 Y108.907
G1 X161.777 Y109.127
G1 X162.037 Y109.322
G1 X162.318 Y109.488
G1 X162.618 Y109.624
G1 X162.958 Y109.75
G1 X163.307 Y109.84
G1 X163.662 Y109.894
G1 X164.019 Y109.911
G1 X164.376 Y109.892
G1 X164.731 Y109.836
G1 X165.079 Y109.744
G1 X165.419 Y109.615
G1 X165.627 Y109.497
G1 X165.819 Y109.358
G1 X165.994 Y109.2
G1 X166.152 Y109.024
G1 X166.289 Y108.834
G1 X166.406 Y108.629
G1 X166.502 Y108.411
G1 X166.573 Y108.183
G1 X166.656 Y107.832
G1 X166.714 Y107.477
G1 X166.746 Y107.119
G1  Y106.759
G1  Y98.544
G1 X168.949
G1  Y106.759
G1  Y107.352
G1 X168.898 Y107.942
G1 X168.814 Y108.528
G1 X168.692 Y109.108
G1 X168.567 Y109.482
G1 X168.402 Y109.836
G1 X168.199 Y110.166
G1 X167.96 Y110.47
G1 X167.689 Y110.745
G1 X167.386 Y110.988
G1 X167.056 Y111.196
G1 X166.7 Y111.366
G1 X166.168 Y111.559
G1 X165.623 Y111.696
G1 X165.07 Y111.777
G1 X164.512 Y111.804
G1 X163.955 Y111.775
G1 X163.403 Y111.69
G1 X162.858 Y111.55
G1 X162.327 Y111.355
G1 X161.839 Y111.093
G1 X161.384 Y110.781
G1 X160.966 Y110.422
G1 X160.587 Y110.018
G1  Y116.439
G1 X158.39
G1  Y98.544
M05 
G0 X174.05 Y106.271 F0
M03 S255
G1 X174.111 Y106.842 F1000
G1 X174.246 Y107.397
G1 X174.454 Y107.93
G1 X174.733 Y108.432
G1 X175.042 Y108.825
G1 X175.397 Y109.168
G1 X175.792 Y109.455
G1 X176.221 Y109.686
G1 X176.677 Y109.856
G1 X177.154 Y109.962
G1 X177.646 Y110.003
G1 X178.145 Y109.974
G1 X178.673 Y109.882
G1 X179.17 Y109.711
G1 X179.629 Y109.467
G1 X180.043 Y109.157
G1 X180.405 Y108.787
G1 X180.707 Y108.364
G1 X180.942 Y107.894
G1 X181.104 Y107.383
G1 X181.219 Y106.831
G1 X181.289 Y106.271
G1 X174.05
M05 
G0 X171.774 Y106.533 F0
M03 S255
G1 X171.694 Y105.899 F1000
G1 X171.655 Y105.261
G1  Y104.624
G1 X171.7 Y103.987
G1 X171.784 Y103.354
G1 X171.909 Y102.727
G1 X172.074 Y102.107
G1 X172.215 Y101.721
G1 X172.383 Y101.351
G1 X172.576 Y100.996
G1 X172.793 Y100.659
G1 X173.032 Y100.34
G1 X173.293 Y100.04
G1 X173.574 Y99.76
G1 X173.874 Y99.502
G1 X174.192 Y99.265
G1 X174.527 Y99.052
G1 X174.876 Y98.862
G1 X175.24 Y98.698
G1 X175.616 Y98.56
G1 X176.004 Y98.449
G1 X176.402 Y98.366
G1 X176.809 Y98.312
G1 X177.597 Y98.254
G1 X178.386 Y98.268
G1 X179.117 Y98.343
G1 X179.829 Y98.507
G1 X180.516 Y98.757
G1 X181.17 Y99.092
G1 X181.551 Y99.358
G1 X181.905 Y99.654
G1 X182.232 Y99.978
G1 X182.529 Y100.329
G1 X182.794 Y100.704
G1 X183.027 Y101.101
G1 X183.225 Y101.519
G1 X183.386 Y101.955
G1 X183.535 Y102.438
G1 X181.265 Y102.719
G1 X181.134 Y102.383
G1 X180.916 Y101.9
G1 X180.637 Y101.454
G1 X180.3 Y101.049
G1 X179.91 Y100.692
G1 X179.634 Y100.517
G1 X179.345 Y100.368
G1 X179.046 Y100.247
G1 X178.737 Y100.155
G1 X178.421 Y100.091
G1 X178.099 Y100.056
G1 X177.775
G1 X177.449 Y100.075
G1 X176.969 Y100.15
G1 X176.509 Y100.286
G1 X176.074 Y100.48
G1 X175.669 Y100.727
G1 X175.3 Y101.025
G1 X174.972 Y101.37
G1 X174.689 Y101.758
G1 X174.457 Y102.185
G1 X174.243 Y102.734
G1 X174.083 Y103.299
G1 X173.978 Y103.877
G1 X173.928 Y104.464
G1 X183.596
G1 X183.614 Y105.416
G1 X183.534 Y106.361
G1 X183.358 Y107.294
G1 X183.087 Y108.206
G1 X182.915 Y108.614
G1 X182.714 Y109.003
G1 X182.485 Y109.372
G1 X182.229 Y109.719
G1 X181.949 Y110.043
G1 X181.646 Y110.343
G1 X181.322 Y110.619
G1 X180.978 Y110.869
G1 X180.616 Y111.091
G1 X180.237 Y111.286
G1 X179.844 Y111.451
G1 X179.438 Y111.586
G1 X179.019 Y111.689
G1 X178.591 Y111.76
G1 X178.155 Y111.798
G1 X177.712
G1 X177.214
G1 X176.72 Y111.745
G1 X176.234 Y111.654
G1 X175.758 Y111.523
G1 X175.295 Y111.352
G1 X174.848 Y111.142
G1 X174.418 Y110.894
G1 X174.009 Y110.608
G1 X173.618 Y110.267
G1 X173.26 Y109.896
G1 X172.937 Y109.497
G1 X172.65 Y109.071
G1 X172.4 Y108.623
G1 X172.19 Y108.154
G1 X172.021 Y107.667
G1 X171.894 Y107.164
G1 X171.774 Y106.533
M05 
G0 X186.341 Y98.544 F0
M03 S255
G1 X188.538 F1000
G1  Y116.439
G1 X186.341
G1  Y98.544
M05 
G0 X194.231 Y101.518 F0
M03 S255
G1 X193.964 Y101.94 F1000
G1 X193.755 Y102.402
G1 X193.558 Y103.041
G1 X193.422 Y103.694
G1 X193.345 Y104.357
G1 X193.33 Y105.026
G1 X193.341 Y105.576
G1 X193.389 Y106.123
G1 X193.477 Y106.666
G1 X193.602 Y107.202
G1 X193.712 Y107.555
G1 X193.855 Y107.893
G1 X194.029 Y108.215
G1 X194.232 Y108.518
G1 X194.463 Y108.8
G1 X194.721 Y109.059
G1 X195.004 Y109.293
G1 X195.311 Y109.5
G1 X195.793 Y109.733
G1 X196.296 Y109.891
G1 X196.812 Y109.974
G1 X197.331
G1 X197.847 Y109.918
G1 X198.35 Y109.78
G1 X198.833 Y109.569
G1 X199.288 Y109.285
G1 X199.534 Y109.081
G1 X199.762 Y108.858
G1 X199.97 Y108.619
G1 X200.158 Y108.363
G1 X200.324 Y108.094
G1 X200.468 Y107.811
G1 X200.589 Y107.517
G1 X200.687 Y107.212
G1 X200.837 Y106.54
G1 X200.929 Y105.858
G1 X200.965 Y105.171
G1 X200.943 Y104.482
G1 X200.902 Y103.955
G1 X200.82 Y103.435
G1 X200.698 Y102.922
G1 X200.536 Y102.42
G1 X200.352 Y102.001
G1 X200.12 Y101.614
G1 X199.844 Y101.261
G1 X199.527 Y100.945
G1 X199.174 Y100.672
G1 X198.788 Y100.443
G1 X198.374 Y100.263
G1 X197.935 Y100.135
G1 X197.64 Y100.088
G1 X197.343 Y100.062
G1 X197.046
G1 X196.748 Y100.077
G1 X196.249 Y100.165
G1 X195.774 Y100.32
G1 X195.329 Y100.537
G1 X194.919 Y100.812
G1 X194.552 Y101.14
G1 X194.231 Y101.518
M05 
G0 X192.018 Y100.967 F0
M03 S255
G1 X192.247 Y100.617 F1000
G1 X192.5 Y100.287
G1 X192.776 Y99.977
G1 X193.073 Y99.69
G1 X193.391 Y99.426
G1 X193.727 Y99.186
G1 X194.081 Y98.971
G1 X194.451 Y98.783
G1 X194.835 Y98.623
G1 X195.232 Y98.491
G1 X195.64 Y98.389
G1 X196.059 Y98.318
G1 X196.487 Y98.278
G1 X197.029 Y98.252
G1 X197.571 Y98.263
G1 X198.177 Y98.321
G1 X198.768 Y98.439
G1 X199.342 Y98.614
G1 X199.895 Y98.845
G1 X200.422 Y99.13
G1 X200.919 Y99.466
G1 X201.383 Y99.852
G1 X201.808 Y100.287
G1 X202.246 Y100.893
G1 X202.599 Y101.548
G1 X202.862 Y102.245
G1 X203.03 Y102.974
G1 X203.173 Y103.979
G1 X203.224 Y104.99
G1 X203.184 Y106.002
G1 X203.052 Y107.009
G1 X202.885 Y107.726
G1 X202.63 Y108.408
G1 X202.294 Y109.047
G1 X201.881 Y109.636
G1 X201.398 Y110.169
G1 X200.85 Y110.64
G1 X200.242 Y111.04
G1 X199.58 Y111.363
G1 X198.947 Y111.567
G1 X198.302 Y111.709
G1 X197.65 Y111.788
G1 X196.994 Y111.803
G1 X196.339 Y111.756
G1 X195.691 Y111.646
G1 X195.054 Y111.473
G1 X194.431 Y111.238
G1 X193.868 Y110.94
G1 X193.347 Y110.583
G1 X192.874 Y110.172
G1 X192.452 Y109.71
G1 X192.085 Y109.204
G1 X191.777 Y108.658
G1 X191.532 Y108.076
G1 X191.354 Y107.464
G1 X191.216 Y106.8
G1 X191.123 Y106.132
G1 X191.074 Y105.459
G1  Y104.786
G1 X191.109 Y104.114
G1 X191.193 Y103.445
G1 X191.32 Y102.782
G1 X191.492 Y102.127
G1 X191.639 Y101.723
G1 X191.815 Y101.336
G1 X192.018 Y100.967
M05 
G0 X177.801 Y94.769 F0
M03 S255
G1 X178.708 Y93.91 F1000
G1 X179.652 Y93.099
G1 X180.632 Y92.337
G1 X181.647 Y91.626
G1 X182.693 Y90.968
G1 X183.771 Y90.365
G1 X184.879 Y89.817
G1 X186.014 Y89.328
G1 X187.176 Y88.898
G1 X188.362 Y88.53
G1 X189.572 Y88.225
G1 X190.803 Y87.984
G1 X192.054 Y87.811
G1 X193.323 Y87.705
G1 X194.61 Y87.669
G1 X195.896 Y87.705
G1 X197.166 Y87.811
G1 X198.417 Y87.984
G1 X199.648 Y88.225
G1 X200.858 Y88.53
G1 X202.044 Y88.898
G1 X203.206 Y89.328
G1 X204.341 Y89.817
G1 X205.449 Y90.365
G1 X206.526 Y90.968
G1 X207.573 Y91.626
G1 X208.588 Y92.337
G1 X209.568 Y93.099
G1 X210.512 Y93.91
G1 X211.419 Y94.769
G1 X212.288 Y95.674
G1 X213.115 Y96.624
G1 X213.901 Y97.615
G1 X214.643 Y98.648
G1 X215.34 Y99.719
G1 X215.991 Y100.828
G1 X216.593 Y101.973
G1 X217.145 Y103.151
G1 X217.645 Y104.362
G1 X218.093 Y105.603
G1 X218.486 Y106.873
G1 X218.823 Y108.17
G1 X219.102 Y109.492
G1 X219.322 Y110.838
G1 X219.481 Y112.206
G1 X219.577 Y113.594
G1 X219.61 Y115
G1 X219.577 Y116.406
G1 X219.481 Y117.794
G1 X219.322 Y119.162
G1 X219.102 Y120.508
G1 X218.823 Y121.83
G1 X218.486 Y123.127
G1 X218.093 Y124.397
G1 X217.645 Y125.638
G1 X217.145 Y126.849
G1 X216.593 Y128.027
G1 X215.991 Y129.172
G1 X215.34 Y130.281
G1 X214.643 Y131.352
G1 X213.901 Y132.385
G1 X213.115 Y133.376
G1 X212.288 Y134.326
G1 X211.419 Y135.231
G1 X210.512 Y136.09
G1 X209.568 Y136.901
G1 X208.588 Y137.663
G1 X207.573 Y138.374
G1 X206.526 Y139.032
G1 X205.449 Y139.635
G1 X204.341 Y140.183
G1 X203.206 Y140.672
G1 X202.044 Y141.102
G1 X200.858 Y141.47
G1 X199.648 Y141.775
G1 X198.417 Y142.016
G1 X197.166 Y142.189
G1 X195.896 Y142.295
G1 X194.61 Y142.331
G1 X193.323 Y142.295
G1 X192.054 Y142.189
G1 X190.803 Y142.016
G1 X189.572 Y141.775
G1 X188.362 Y141.47
G1 X187.176 Y141.102
G1 X186.014 Y140.672
G1 X184.879 Y140.183
G1 X183.771 Y139.635
G1 X182.693 Y139.032
G1 X181.647 Y138.374
G1 X180.632 Y137.663
G1 X179.652 Y136.901
G1 X178.708 Y136.09
G1 X177.801 Y135.231
G1 X176.932 Y134.326
G1 X176.105 Y133.376
G1 X175.319 Y132.385
G1 X174.577 Y131.352
G1 X173.88 Y130.281
G1 X173.229 Y129.172
G1 X172.627 Y128.027
G1 X172.075 Y126.849
G1 X171.575 Y125.638
G1 X171.127 Y124.397
G1 X170.734 Y123.127
G1 X170.397 Y121.83
G1 X170.118 Y120.508
G1 X169.898 Y119.162
G1 X169.739 Y117.794
G1 X169.643 Y116.406
G1 X169.61 Y115
G1 X169.643 Y113.594
G1 X169.739 Y112.206
G1 X169.898 Y110.838
G1 X170.118 Y109.492
G1 X170.397 Y108.17
G1 X170.734 Y106.873
G1 X171.127 Y105.603
G1 X171.575 Y104.362
G1 X172.075 Y103.151
G1 X172.627 Y101.973
G1 X173.229 Y100.828
G1 X173.88 Y99.719
G1 X174.577 Y98.648
G1 X175.319 Y97.615
G1 X176.105 Y96.624
G1 X176.932 Y95.674
G1 X177.801 Y94.769
M9
M05
G90

Jonty 0 · 19 Dec 2022, 16:17

@Jonty-0 This is lightburn pg1

Jonty 0 · 19 Dec 2022, 16:18

@Jonty-0 and page 2

jay_s_uk · 19 Dec 2022, 16:21

@Jonty-0 set your laser as sticky in M452 , i.e. add S1

Jonty 0 · 19 Dec 2022, 16:55

@jay_s_uk Thanks jay - I think I'm there....it's coming on and off anyway as planned - I noticed that the frequency F1000 line in the gcode seems to be controlled by the mm/sec speed setting in Lightburn - when I changed it to 500mm, it changed the gcode to G1 x160.587 F500 and the laser didn't work.

Changed that to 1000 mm/s and it worked. Also added S1 too and works fine.

Thanks for your help mate, I really appreciate it. I can actually use the thing finally! Awesome. Owe you one. Thanks so much.