Hi,
This has probably been discussed but watching the camera calibration videos I am still a way off the mark for alignment.
I have the Lightburn camera 120 degree and I have run calibration and alignment on my 900x600 machine, mounted on the door at around 700mm above bed height (previously it was at hinge line of the door but had no luck with accuracy).
However when I overlay the image and point to location to jog the laser head its still like X +7mm and X+1mm off target and this seems to alter as i travel around the bed point to location and try and get it on target.
Am I missing something or are they just not that good? The video tutorials show their machine being 0.5mm off target which I’d be more than happy to have and make do with.
Thanks in advance and any links would be greatly appreciated, I am also trying the LB 2.0 release to see if that is any better.
Kind regard,
Dan
I’ve spent some time setting up cameras for lightburn application and can tell you it’s vitally important to have the camera accurately centered on the bed and pointing straight down - orthogonal at 90 degrees. It’s also better to use a narrower angle lens if possible (i.e., 90 deg Vs. 120 deg). The less work the correction algorithm has to do then the better the result will be. Also, when running through the lens correct wizard be sure to get the pattern target as far into the corners of your working area as you can while still getting a reasonable result. Again, that gives the correction algorithm the best data possible to work with. Mine is certainly accurate to <0.5mm over ALL of the bed, what usually happens under less than ideal conditions (noted above) is that you may be able to achieve decent accuracy in the center but then it’s some way off towards the corners. So basically, the better you postion the camera then the better your result will be.
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Thanks for the info,
I had thought that it would probably only be accurate within a set area but I couldn’t get it any better. I will accurately measure where the camera needs to be and see if that makes a difference alongside making the calibration targets at full length/width to my working table.
It’s a nice to have feature not a need to have but I have it so I would like to make it work!