Frequent lightburn freezing

LightBurn Software Questions OS Specific
1

HI and sorry for posting something that is similar to other threads but i could not find an answer to my problem

i am using a customized Twotrees TT 5.5 laser engraver , very often LB freeze in the middle of the job and mostly at the end of a completed job…laser head reaches origin and after that there is no way to make any further action on the machine… when it happens i have no choice but closing LB and opening at again…sometime i need to turn off also the engraver and/or disconnet the usb cable to reset everyting

this is a “quick” operation but its annoying having to deal with problem pretty much every few jobs or actions…here is a screenshoot of the screen during one of this freeze

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this also much more frequent when i use another application and place LB in the background…if so i do the irreversible freeze is pretty much guarantee…as a result , to prevent the problem i end launching the job and doing nothing on my pc until the job has ended…in the hope it’ll end successfully

worth maybe to point that the machine is connected to my computer throungh a 4.5 mt usb cable …
any suggestion/idea ? being able at least to unlock wo shutting down would be already better than nothing …of course solving the instability would be my final goal

thanks in advance

2

My first thought was that it is a communication problem - a 4.5m usb cable might the problem. I think you can get an active or powered usb cable, or maybe you could try moving the computer closer and using a shorter one, at least temporarily to see if the problem goes away.
https://www.cablematters.com/Blog/USB-C/active-usb-extension-cable

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3

I agree with Steve. I had many similar reports with low-quality USB cables and different USB ports on PCs. First, try with a very short, high-quality cable. If issues are gone, think about how you can increase cable length.

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4

thanks Guys !!!

I will follow your advices and let you know how it goes.

have a nice week end

5

"The overall maximum length of a USB 2.0 run is 25 meters with a non-powered starting cord. The maximum cord length for USB 3.0 and 3.0 is now 15 meters ".
…These numbers are under the best of conditions.

At that length, it can make a good antenna. Shielded cable and ferrites will help.

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