I had dealt with this problem before using a universal g-code sender as my machine does not have limit switches and does not home.
And now it just keeps halting the job when i try to engrave photos and images. It works fine with cutting lines and fill vectors. But even though I had engraved a similar photo of similar size it is now sending alarm and making loud beep noise which doesn’t stop if I don’t unplug everything.
Please I am not a tech person and I have tried most of the suggestions that I understood from the platform but nothing changed.
Then you must manually home the machine every time you turn it on:
Without home switches, the controller assumes the laser head is at the home position when it starts up. You must make sure that assumption is correct, because when the controller doesn’t know where the laser head is on the platform, it cannot move the head to a known position.
After manually homing the machine, always use LightBurn’s Move window to jog the head around. Moving the head by hand doesn’t update the controller’s position, so all subsequent motions will be incorrect.
But I have been using the machine for 7 months with little to no issue.
And when I try to manually home it from the front left side, it goes to the back right side and crushes to the side and keeps on going and triggers the loud beep noise.
I have tried to reduce the work space from 100cm * 100cm to 80cm * 80cm but it’s the same. Even when I reduce it it crushes on both sides.
I am sorry. The crashing and bumping happens when I click on the home button from lightburn. But what I used to do is position it where I want it to be and then powering it then I tell it to set origin and set finish position.
If you have not done the manual homing dance to tell the controller where the laser head is, then that is exactly what will happen.
The (likely) reason images fail is that LightBurn requires an overscan region extending on both sides of the image to accelerate and decelerate the laser head. Because the controller does not know where the head is, it’s likely to smash into the sides of the machine.
Remember: it’s not where you think the laser head is, it’s where the controller thinks it is.
Okay. So I saw two options for homing manually.
And I used to do the first one but in addition to powering it on where I want it I need to enter G92 X0 Y0 and check that $10=0.
The first is “With the machine off” and the second is “With the machine powered”, so do what’s appropriate.
IMO, (getting into the habit of) parking the head at the origin position so it’s in the right place when the controller turns on is simpler: everybody agrees on the machine position right from the start and the humans need not think about it.
With that done, use the Preview window to see the overscan region around images. If everything fits within the green rectangle marking the platform limits, then it’s good to go.
In order for that to work, both LightBurn and GRBL must know the platform size:
Because the machine has a big 80W laser, it probably cannot use the entire platform size. After you’ve manually homed it, then jog carefully over to the X and Y limits, note where the head gets perilously close to the sides, and transfer those coordinates to both LightBurn & GRBL.
I am not sure if it is an issue but it seems like it runs over a bump when I move it forward and backward at some points but then it passes it Smoothly for two three times when I try to move it again it is only felt on my hands
Apparently that keeps the forum storage bill down. You can upload the video to Youtube / Google / whatever, then post a link here.
I’m losing track of what’s going on. Why would you unplug what looks like the power adapter for the laser head?
The machinery must move smoothly across the entire platform, so look for a cable snagging on something / crud in the wheels / a mis-adjusted eccentric nut / stuff like that.
I’ll step aside on this, as it’ll require someone more familiar with whatever machine you have.
I thought at first the problem was the Driver Adapter because of the noise and the blinking that is why I tried to unplug it but it stopped when I unscrewed the line, the middle black line specifically, the other yellow and red one don’t cause the same issue.
I wasn’t sure if the Alarm 3 two days ago was related and was looking for similar problems that’s why I ended up on the the other thread.
I had found the reason my machine was no longer powering up. It was the line from the driver adapter to the laser head. I changed it with a new one and now it’s powering up.
But when I started a photo engraving job it stopped a few minutes into the job because Alarm 3 was triggered.
I did home it manually with the machine on $10=0 and G92 X0 Y0 it said ok but 42 minutes into the job Alarm 3 was triggered again. The job was supposed to run for 3 hours.
If you set the origin to the home position, I would expect it to go out of bounds. You’re tight against the left edge of the machine. You need to move the laser head to the right a bit , then set your origin.
I’m actually surprised it made it that far into the burn before erroring out. Use the preview window with traversal lines enabled. That will show you where it will extend past the bounds of your machine. The faint green line in preview is the edge of your machine.
I was using an older version of Lightburn and I couldn’t see the green box. So I turned the machine on and put G92 X0 Y0 then moved 2 centimeters to both x and y and set origin and set finish position then started the job. But it stopped 20 minutes into the job again.
I then opened the latest version and this time I moved 4 centimeters to both sides and set origin and finish position. But it was the same it only went for 10 minutes.
I want to be sure if the steps I took are correct. Also I am supposed to move the job on Lightburn too right? Because when I moved the laser head 4cm I also set both Xpos and YPos of the image at 4cm
