I am new to Lightburn and Lasers, I have bought an AtomStack A5 40w (5w) and anything I create or import is running 100% larger on the x axis than it should be. The attached image is a 50mm wide box and circle that is 100mm wide. Any ideas?
If you set your machine in move tab to jog 50mm is it traveling 50mm on each axis?
Some folks inadvertently turn on the Enable Rotary switch in the Laser Window, because itâs directly under the Frame button. If itâs on, turn it off and the situation will immediately improve.
If itâs off, then there are other things to look for âŚ
Thanks ednisley, Iâll take a look and see if thatâs the case.
Iâll have a look and see, thanks Dskall.
@ednisley I donât see an option for âenable rotaryâ under the frame button, or anywhere in fact, so no idea if that is enabled. @Dskall I set up the 50mm jog and itâs definitely moving twice as far on the x axis than y on jog.
Can you provide the following:
- full screenshot of LightBurn with the design loaded
- photo of the laser with the example burn on the bed in the orientation that it was first burned
- run this command in Console and return output:
$$
$$
$0=10
$1=25
$2=0
$3=0
$4=0
$5=1
$6=0
$10=0
$11=0.010
$12=0.002
$13=0
$20=0
$21=1
$22=1
$23=3
$24=300.000
$25=3000.000
$26=250.000
$27=1.000
$30=1000.000
$31=0.000
$32=1
$37=1
$100=80.000
$101=80.000
$102=80.000
$103=100.000
$104=100.000
$105=100.000
$110=6000.000
$111=6000.000
$112=6000.000
$113=1000.000
$114=1000.000
$115=1000.000
$120=1000.000
$121=1000.000
$122=1000.000
$123=200.000
$124=200.000
$125=200.000
$130=410.000
$131=400.000
$132=200.000
$133=300.000
$134=300.000
$135=300.000
ok
Your symptoms are a bit odd.
Is everything on your machine stock or have you made any modifications? Specifically, have you changed any gears, stepper drivers, or stepper motors on your laser?
This can likely be corrected with a GRBL configuration change but Iâm reluctant to suggest it if thereâs something else underlying thatâs causing the issue.
Can you do one more thing?
Can you take the design youâre showing and then go to File->Save Gcode, save with a .txt extension and then upload the file here? Would like to validate that the gcode looks correct.
The machine is completely stock, unboxed it, followed the build instructions, and initially tried it with LaserGBRL. This resulted in the same problem, so I then tried LightBurn, but the same thing happened.
; LightBurn 1.4.03
; GRBL-LPC device profile, current position
; Bounds: X0 Y0 to X50 Y50
G00 G17 G40 G21 G54
G91
M4
; Cut @ 500 mm/min, 100% power
M9
G0 X0Y0
; Layer C00
G1 Y50S1000F500
X50
Y-50
X-50
M9
G1 S0
M5
; return to starting pos
G0 X0Y0
M2
The gcode itself looks fine but shows a different problem. Youâre configured as a GRBL-LPC device. That by itself isnât likely to cause a whole lot of problem but itâs not ideal.
Suggest you push Devices button in Laser window, edit the device and then switch to âGRBLâ device type.
As for correcting the width calibration issue hereâs what I suggest:
- First check on the controller board to see if there are any jumpers or dip switches that allow you to change the microstepping of the stepper drivers. Itâs possible this was misconfigured. If so, switch X to match Y.
- Failing that, you can change $100 in GRBL configuration to go from 80 to 40. Alternatively, you can use Edit->Machine Settings->Calibrate axis to do this empirically.
If you want to directly change then you can do this in Edit->Machine Settings or by entering$100=40in Console
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I would bet it is misconfigured steeper driver settings.
I couldnât see anything on the board that looked like a jumper, but the $100=40 has done the trick, thank you so much, life is suddenly better!
Iâm glad you have something that works. The potential danger is now that youâre not configured as stock so upgrading firmware or something could override this. You technically have reduced the potential resolution of the X-axis. In reality this shouldnât be a problem but watch out for it.
If you can take high resolution photos of both sides of the controller board someone may be able to identify a stepper driver misconfiguration.
When I had it apart last night, I took a picture of one side, there wasnât anything to see on the other I donât think, but this is what was there.
Looks like everything is hard-wired there. If you wanted, you could compare resistance readings for each resistor between the X and Y drivers to see if theyâre all the same and check that theyâre all in-circuit. I suppose itâs more likely that a resistor was not properly connected more than the wrong rating resistor being placed but hard to say.
Your call if itâs worth it to you. You could alternatively likely get a replacement from the manufacturer if itâs still within warranty.
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