Upgraded to V22 and laser stoped burning

[Andrewh87 (Andrew Hanson)]

Upgraded to new version and laser stopped burning. Moves and follows commands. Light on but no power.

Almost seeems to be taking setting from fire button.

Did first burn fine. Did a burn with 2 layers and failed

[Rick (Technical Evangelist)]

OS version and share your current firmware settings for that setup. Do you use a macro to change from CNC to lasing mode?

This is worth review to ensure your configuration and setting are as they should be for proper operation.

Configuring a 3018 CNC (or other CNC-based laser) for use with LightBurn

The summary: Turn on Laser Mode to get rid of the travel lines You’re trying to move too fast, which is why you don’t get enough power You need to zero the machine 3018’s are pre-configured for use as CNC machines, not lasers, so their settings and speeds will likely need to be changed to give you acceptable results with LightBurn. To see the existing settings, you can type $$ into the console in LightBurn and press enter, or go to Edit > Machine Settings. Both are showing the same values, b…

[Andrewh87 (Andrew Hanson)]

Windows 10 not sure how to show firmware

[Rick (Technical Evangelist)]

From the post I linked above. You can post back what you see.

@LightBurn

To see the existing settings, you can type $$ into the console in LightBurn and press enter, or go to Edit > Machine Settings. Both are showing the same values, but the Machine Settings view in LightBurn is a little easier to use.

[Andrewh87 (Andrew Hanson)]

Just downgraded
Got same issue. Replaced prefs.ini from backup and it worked.

[Rick (Technical Evangelist)]

Glad to hear you are sorted.

[Andrewh87 (Andrew Hanson)]

Not really. I am now on the old version and had to overwrite prefs.ini with an old version.
When I reinstall with the latest version will it reoccur and can I use the old prefs.ini with the new version?

[Rick (Technical Evangelist)]

@Andrewh87

When I reinstalwill it reoccur

LightBurn should use your currently working prefs.ini file after an update. Not sure why this had an issue, but I would try to update to our latest again and see if this resolves. You can always go back, as you have, if it does not work.

[LightBurn (Oz)]

If you’re still having issues if you move forward, it’s most likely one specific setting - Enable DTR:

my K40 no longer reacts to the lightburn command

Can you check in Edit → Device Settings and tell me if the ‘Enable DTR Signal’ toggle is enabled or not? If it isn’t, try enabling, then restart the software and tell me if that helps. [image]

The handling of that flag was broken for a couple versions, and is now fixed and working correctly, but if your setting is wrong that’s probably all it is.