similarly to the existing thread, on the trial version of lightburn 1.2.01 am trying to configure the engraver so that it will cooperate. what happens is i can print, als ,not inverted, but like in the other thread, it crashes into the side rails on homing.
i think the software design is really lacking in the sense that it should be easy to specify a new origin. i mark front left as origin, then the laser travel is in the correct direction, but all else is messed up. the manual does not say what the logic is starting from current position in relation to what i have in the work area, but regardless, work area is 410 by 400 and on home it will crash into the rails.
likewise that can be mitigated on startup, if you turn off auto homing. at first i thought engraver or software were not working, but it was the auto homing with the fals origin.
while it appears other software is not much more usable, i find this so annoying that i ca not imagine using it to any extent, sicne i mam not willing to spend hours to try how to engrave what i want.
What thread are you referring to?
Based on the rest of the post it sounds like you are experiencing a startup process issue combined with an unfamiliarity with some of the concepts in LightBurn.
Since your laser does not have homing switches you cannot use auto-home nor should you use the Home button in Laser window. You need to do a manual homing process by moving the laser head to the front left of the machine while the machine is off, then turn on the laser. The starting position will be treated as 0,0.
Not following what you’re doing here but setting origin is trivially easy.
However, until you’re very familiar with your laser and LightBurn I strong suggest you stick to Absolute Coords in Start from in Laser window. This is the most intuitive mode where the location of the objects in workspace will match location on your laser.
It does explain the use of the different modes and there is also a video published.
Coordinates & Origin - LightBurn Software Documentation
Using the startup process and Absolute Coords should prevent most crashing scenarios.
You may also want to review the video on the Sculpfun S9 which is very similar to your machine and does not have limit switches.
if setting the home position was consistently implemented in the software, then after following the method “turn on in the intended origin” should enable a useful function of the homing button, which is not the case
while it will improve behaviour of the laser, it will still crash into the rails when using the home button.
it would be reasonable if offset coordinates could be entered to specify the correct the origin. if i try that however, it will totally mess up control.
the useful method is maybe to turn it on in a position and use not absolute coordinates but “user origin”
I’m not following you. The behavior in software is consistent. However, since you do not have limit switches the button doesn’t work in the way that it should. There is nothing the software can do to make up for the fact that the switches do not exist. If you’re not aware, the controller has no way of knowing the location of the laser head without the homing process. That is why you need to perform the manual home operation that I documented earlier.
Not following again.
Is there something you are trying to do that’s not obvious? What are you trying to achieve?
User origin is the most unintuitive start from method. It can be useful but intended for specific scenarios and requires care to avoid crashes.
Is there a reason why using manual homing is unsuitable for you?
If so, consider adding limit switches to your laser.
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