Job target exceeds Machine travel in Lightburn

LightBurn Software Questions
21

Is the machine homing to top-left and working as you expect? Seems to me your origin should not be correct and positions incorrectly reported. However, your overall dimensions should now be what you expect.

Somethings going on with your offsets. Are you still using gSender? I’m wondering if it’s setting these offsets somehow.

22

I used gSender Prior to running these codes for you and yes I did a preset in gSender and Yes the Mill stopped at that preset in LB. Not sure this is fixable. I want to save the preset so I can run the job again in the future but LB does not like it. At least I now know the cause.

23

What functionality does the preset provide for you in gSender? Is it a way of having a named label for a specific position? Can you take a look at “Saved Positions” in Move window? Would that provide the same functionality?

If so, then let’s reset the offset. Can you try all this without ever running gSender and see if it behaves as you expect:

  1. reset offsets by running in Console:
$RST=#
  1. Set offset to make front-left as 0,0:
G10 L2 P1 X0 Y-813
  1. Home the machine by recycling power (if this automatically homes for you) or by pushing the Home button in LightBurn
  2. Run these commands in Console and report back:
$#
?

If everything works as expected then:

  1. At this point the machine head should be at back left.
  2. The reported position should be 0,813 if you hit “Get position” in Move window if your units are mm. If your units are inches then it should be 0,32.001 or thereabouts.
  3. If you move the machine to front-left the reported position should be 0,0

If all these things are true, then you should be able to operate the machine “normally” from there. Also, I realized I might be negligently referring to your machine as a laser so apologize. Just automatic when most machines on this forum are lasers.

24

Waiting for connection…

ok

[VER:1.1h.20190830:]

[OPT:VMZ,15,128]

Target buffer size found

ok

Homing

ok

$RST=#

[MSG:Restoring defaults]

ok

Grbl 1.1h [‘$’ for help] LongMill MK1 build Feb 7, 2022

G10 L2 P1 X0 Y-813

ok

ok

$#

[G54:0.0000,-32.0079,0.0000]

[G55:0.0000,0.0000,0.0000]

[G56:0.0000,0.0000,0.0000]

[G57:0.0000,0.0000,0.0000]

[G58:0.0000,0.0000,0.0000]

[G59:0.0000,0.0000,0.0000]

[G28:0.0000,0.0000,0.0000]

[G30:0.0000,0.0000,0.0000]

[G92:0.0000,0.0000,0.0000]

[TLO:0.0000]

[PRB:0.0000,0.0000,0.0000:0]

ok

?

<Idle|WPos:0.0000,32.0079,0.0000|FS:0.0,0|WCO:0.0000,-32.0079,0.0000>

ok

25

When I do all this the Machine goes to capacity on all axis’s and works as it should while I am using the Laser.

26

Ah… I just noticed that you have your machine configured to report in inches ($13=1). I’m actually surprised this is working as I believe LightBurn assumes reporting in millimeters.

I couldn’t understand why the offset wasn’t getting reported as expected but makes sense now.

Does this mean that you’re good to go then?

27

Thank you for all your help here! I am changing to mm and will see how this goes.

28

Changed to MM and opened gSender, set a point as I had before and closed. Opened LB and functioned as it should. Thank you again!

29

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