LightBurn crashes intermittently when sending job to laser

LightBurn Software Questions
1

I have been using LightBurn with my laser cutter for years, but replaced the computer yesterday as the old one was getting slow.

LightBurn is now almost always crashing (ie going into ‘not responding’ mode) when I try to send a file to the machine (by clicking ‘start’). Reinstalling LB seems to fix the issue sometimes, but once it has occurred, it seems to happen every time before reinstalling LB again.

The ‘new’ computer is a Dell Optiplex 7040 with i5-6500 running Windows 11

Other info:

  • Sometimes LB gives the machine busy or paused comms error rather than crashing. Restarting the laser does not fix this issue.
  • A few times LB crashed mid way through transmitting the file, but the machine started the job
  • Everything else in LB seems to work fine
  • I have tried uninstalling LB and reinstalling
  • I am using LB v 1.0.06
  • LB v0.9.24 and 1.0.05 give the same issue

I hope someone can help, this is really frustrating!

2

Is it the same with usb and lan connection?

3

Hi @bernd.dk

Good question! I’ve only ever used the laser with USB, so not sure about LAN. I will try (if I can find a cable long enough).

4

Without being sure, I think Windows 11 usb handling is not as rock solid as desired.
Regarding the long cable :wink: a wireless repeater is a good alternative.
But in general, a lan connection is always preferable, the speed and stability of this protocol is just better.

5

I tried LAN and no luck - couldn’t get the two to talk to each other at all. Same for the old computer too.

7

Have you tried to set up the LAN connection of LightBurn-Ruida manually ?, have you used the cable directly between the computer and your laser or through a router or switch?

8

@bernd.dk yes, the LAN cable ran directly from the computer to the laser (directly into the controller), with no router/switch in between. I set the IP address on the laser to ensure there was no conflict and set that IP address for the machine in LightBurn. For some reason they wouldn’t talk.

9

If you are not going through a router with DHCP (IP assignment) you will need to also assign the IP address of the ethernet port on your computer.

For Windows 11:
Settings->Advanced network settings->Pick the appropriate network adapter (probably Local Area Network)->View Additional Properties->IP Assignment->Edit.

Then pick Manual, enable IPv4. Then enter a unique IP address. Ideally you’d pick one on a different subnet from your primary network. But it needs to be on the same subnet as your laser controller. Subnet mask will depend on your specific conditions but generally 255.255.255.0.

If you need help with this then open a command prompt and type “ipconfig /a”. Return the results here.

What IP address did you assign to your laser?

10

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