Hello from Germany.
I converted my Gweike Cloud to a RUIDA RDC 6442G. It doesn’t work perfectly yet but basically it does. However, adjusting the red dots using laser offset doesn’t work at all. I set it according to the Lightburn manual. No matter whether I turn it on or off or what values I enter, no reaction whatsoever. It would be nice if someone had a tip.
Thank you
Uli
In what way does it not work?
What are you doing, what are you expecting to happen, and what happens instead?
Typically red-dots on a CO2 laser are setup so that they are either in-line or converge at the focal point with the primary laser dot. Are you using a different approach?
Hello,
thanks for your reply. Ok, maybe it was a bit thin so now in more detail.
Unfortunately I can’t take a photo at the moment because I’m traveling for work,
so the sketch below. I hope you can see the essentials. I mounted a red dot beamer on the
side of the cover of the focus unit. Of course, it does not emit at the same point as the CO2 laser.I understood the instruction manual to be able to compensate for the offset (Device Settings - Basic Settings - Laser Offset).
“Start from” stands on “current position”. There is absolutely no reaction to this.
The positions of “framing” and “positioning” do not change.
I want to understand this part better.
If you position the red dot where you would like it to frame, then push frame, the red dot should show you the frame boundary of where the final burn will be placed… Then, when running the job, the primary laser should fire within the bounds of the original red frame.
You’re saying this is not happening?
Have you tried this with Absolute Coords as well?
Thought that’s what they had in them… Please enlighten me…
OK, I think that’s my misunderstanding.
The laser is in Home. If I select frame on, it moves to the location where lasering is to take place, not to the position specified under Laser Offset. If I understand it correctly, do I first have to manually move the beam to the starting point and then select frame? So he can’t do it from the home position? Yes, absolute coordinates is selected.
Hello jkwilborn,
I’m afraid I don’t understand your question correctly (Google Translator), but it’s really the case that I threw out the Gweike controller board and installed the RUIDA controller instead. After days of trying to make something useful out of this disaster with the gweike hotline on the phone, I just didn’t feel like it anymore. By the way, the idea wasn’t mine, Omtech was smart enough to do this for their Polar. Mechanically the devices are the same.
Framing behavior with offset either on or off is the same in the sense that the laser head will show you where the design is to be burned. The only difference is that with offset enabled, the relative position of the laser head will shift in accordance to the offset amount.
No. You can do this using Absolute Coords and initiate from any location including Home.
The Gweike model has a custom Ruida derived or co-developed solution that’s different from other retail controllers. Seems OP just swapped to a standard 6442G.
But that would mean that if I set the offset correctly, the red dot beamer will move to the spot where it should be burned later? I don’t see any shift whatsoever.
If I’m understanding you correctly, then yes, the red dot should show you the frame that the shifted main laser will later burn within.
When you get back to the laser, can you take a video showing framing behavior with offset enabled and disabled? If this doesn’t work that could imply a more fundamental problem.
Is the machine homing correctly and are reported positions correct?
Yes, that’s exactly how it’s supposed to be, but there’s no noticeable shift when the laser offset is on or off.I’ll be back at the laser the day after tomorrow and shoot the two videos.
The home positions in x y and z are approached perfectly except for the sensors. I just moved the x home point inwards by about 1mm in the machine settings (x home offset (mm)) because it sometimes displayed an error there during homing.
The coordinates shown should actually be correct, but I’ll check again.
Thank you until then
Hello berainlb,
I was able to get on with something again today. First of all, the positions are correct. In addition, today I was able to test the function with my notebook on an omtech 80W, it did exactly what it was supposed to. So software and notebook are ok.
I then burned a rectangle (Pic 2) with the laser offset turned off (Pic 1). Then I turned on Laser Offset (Pic 3) and the frame wasn’t shifted but just above the burned rectangle (Pic 4). I realy dont no why but then I started the laser again and oh wonder, it burned a rectangle exactly as specified in the offset, 100 mm offset (Pic 5). So something seems to be reversed in the software ???
Pic 1:
Sorry, I can’t upload videos here. If you need them I could send them to you by email.
greetings
siekai
Can you host on a 3rd party site and link here?
I took a look at the videos.
I can’t really make out what’s going on. And I don’t see the red laser at all.
In this case, the red laser dot should have followed the burn mark. Did that occur?
I don’t follow exactly what happened here. Are you saying that the offset did work?
The red dot beamer wasn’t there to get a better view of it. I lasered a rectangle and after this the frame was in the same place, regardless of whether the laser offset was on or off. If I burn the rectangle again with the offset switched on, it will be burned offset by the value specified in the offset. So it’s not the frame that is moved, but the starting point for the next burn. It works correctly on the 80W omtech, the frame is offset.
The offset therefore has no effect on the frame position. It affects the starting position of the next object to be burned.
“In this case, the red laser dot should have followed the burn mark. Did that occur?”
Yes that is correct
Is the net effect the same? If you leave the pointer offset enabled, does framing and burn work predictably?
Yes, the positions are always the same.
I was actually asking if the offset was working correctly. I don’t think that’s what you’re answering though.
In any case, I’m revisiting your diagram that shows the layout of the primary laser and the red laser. If I’m reading it correctly I think it’s possible that your laser offset should have negative coordinates, not positive.
Meaning it should be -100, -100. Could that be a factor in what you’re seeing?
Hello berainlb,
sorry, I’ve been very busy the last few days. I found this topic:
That seems to be exactly my problem. Entries in Laser offset have no effect on the frame.
Since it worked on the 80W omtech. I only tested this once. I’ll repeat it again this weekend.
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