Hi, after successfuly resolved problem with omniX and rotary in lightburn, next in line is Camera problem that I find very difficult to resolve. The thing is, i tried 2 different camera modules (usb), first one was waveshare 12mp IMX378 78 degrees angle, and other one is IMX179 Camera Module 8MP with 120 degree angle. For bouth cameras i manage to get great results for Camera Lens Calibration. First problem is with Camera Alligment Wizard. When I try to burn those four dots, laser firing but with minimal power. I tried on that wizard to put everything to 100 % but Lighburn ignores it and not have enough power to print those dots. Besides that, laser fire and works perfectly in Lightburn. For now, my work around is to make manualy that pattern and print it , and then open the wizard and just click next so i catch already printed overlay and make alligment. After I done this, and engrave small circle, lit was off for few mm, which i correct in offset and when i try again in the “neighbourhood” of 10mm in each direction from nitial burn, calibration stands, but if i move from that 100mm “window” dots start to missalign more and more. All results for camera lens calibration was below 0.3 . Camera is mounted on the bottom of galvo head, little in front of the lens and it is perpendicular to the workspace, so not in angle. Can someone tell me what did i miss? Or some idea hot to resolve the problem without buying third camera? For now buying lightburn camera is out of the question for me because I live in Portugal and you do not want to know the final price “to my door” if i order it from USA.
Thanks in advance for you answers and help!
Hi Samuel,
I still trying to make it work. I found on YouTube Moore than lasers , and he managed to calibrate usual webcam i think it was 2k. mounted on galvo head, adn it works perfectly. As for now, the biggest problem is focal lenght. I tried waveshare12mp module with 75 degree angle, random 8mp module from aliexpress with 120 degree angle. 75 degree is to narrow and with 150mm lens (in my case focal lenght is 220mm) is imposible to see whole workspace. 120 degree version see all workspace but whatever calibracion of the lens to do (standard or fisheye) it misses few millimeters , despite offset correction and all usual stuff. I have got almost perfect results with that random china modula 8mp 120 degree when i calibrate and use with 70mm lens. even sub mm accuracy on whole workspace.But with 150mm no bueno for now.
Now i am waiting 90 degree camera to arrive. If I manage to make it works with 150mm I will let you know. Also, lightburn is broken with Camera aligment window. It is not possible to print those 4 dots with UV laser, whatever power settings to put so i needed to make it myself and just click next.
Another thing, as you can cocnclude by yourself (because you have omnix also, it is practically imposible to mount camera anywhere else except galvo head, because of the enclosure. So, it is what it is…
I think that 120 degree camera, because of distortion have bad result of bigger workspace, but i am. not sure. I managed to get all lens calibration results below 0.5 and the results are the same.
Official lighburn camera is ut of the question for me because when i calculate shipping to Portugal, customs fees and taxes it get way more over 200 eu. And nobody can guarantee it wil work better then random chinese module.
So, to be continued…
I’d totally recommend mounting the camera on the galvo head. This way, it’s always at the same height to the material. (If your focus is set correctly)
You will measure the distance between the camera and the workpiece. If this distance is way larger than the “Minimum mounting height” in the table above, you will lose resolution due to the cropping.
UV laser sources are special, in that they always fire at 100%, but adjust the power with the Q-Pulse (Pulselenght) in Nanoseconds.
The Camera Alignment Wizard in version 2.0.05 is missing the necessary settings to adjust the power on a UV laser.
Thank you very much for the reply! 2.1 will be released soon ? Just my sanity sake hehe I starting to doubt that because i print 4 dots manualy that it make a problem with alligment… Problem with positioning camera is with OmniX itself. Because of enclosure and small focal lengs options are limited. With 120 degree camera which can be mounted on the galvo head, work area is visible, but problem is with aligment. As i said, i think my camera lens calibration is ok, because on smaller workarea 70x70 it works perfectly, but something is off with bigger lens aligment. If you need beta tester for 2.1 let me know, i would be glad to help
I will check all those links you have provided, and when i find best solution for camera angle for stupid OmniX i will let community know.
If you calibrate the camera with the 70mm lens, and change to the to the bigger lens, the distance between camera and material surface changes. This throws off the Alignment.
I totaly understand that. And I know that it must be calibrated for different lenses. I tried calibration of 70x70 just as desperation, because i could not get 150x150 to work… So the problem is not in Lens Calibration , it is in aligment… I think that it might be something with me printing those 4 dots manualy because of the problem with Camera Aligment Window and UV… Hurry up with 2.1 Thanks!
Recommendations for Your ComMarker Omni X
If you want PERFECT alignment on the Omni X
