Help... absolute coordinates on the lightburn screen do not match the actual bed placement

Hi All,

My absolute coordinates on the Lightburn screen do not match the actual bed placement of my workpiece.

I’m using an Atomstack S10 pro with an extended Y axis (Working Size X 410mm x Y 850mm ) I’m using a 170 degree fixed focus camera and have calibrated both the camera lens and the camera alignment (more than once)…

My procedure for using absolute coordinates is:

  1. Place a work piece on the bed and focus the laser height

  2. Home the machine (X=1 and Y=1. Never goes to ‘0’)

  3. Update the bed background from the camera

  4. Activate the positioning tool in the toolbar

  5. Click on a corner of the workpiece

The laser head then moves to what Lightburn thinks are the coordinates of the corner of the work piece X=151 Y=436 (as displayed both on the lightburn grid and the get position display) but the laser is actually going to X= 196 Y=479 which is off by about 45mm for X and 51mm for Y

Any thoughts appreciated.

Thanks,

Jerry Kornbluth

FYI

I’ve checked and the machine is using absolute coordinates and the G54 value is ‘0’

$#

[G54:0.000,0.000,0.000]

[G55:0.000,0.000,0.000]

[G56:0.000,0.000,0.000]

[G57:0.000,0.000,0.000]

[G58:0.000,0.000,0.000]

[G59:0.000,0.000,0.000]

[G28:0.000,0.000,0.000]

[G30:0.000,0.000,0.000]

[G92:0.000,0.000,0.000]

[TLO:0.000]

[PRB:0.000,0.000,0.000:0]

I’ve tried bot $10=1 (the default) and $10=0

My $ Clues are currently:

$$

$0=10

$1=25

$2=0

$3=0

$4=0

$5=1

$6=0

$10=1

$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

Problem solved. I must have moved the camera slightly after alignment. realigning it fixed the issue. Seems that more often than not, user error is the key…

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