I’m using a Grbl laser 1.1 or earlier with a 3018pro carver and laser. The laser is 2500w.
My laser was burning too light and skipping today. I messed around with speed/power/spindle etc and it didn’t help. I set everything back to how it was (or so I though) and now it burns for a second and then dies off or the laser stops moving all together and then dies off. I can’t even burn 2mm without this happening. Here’s all of my settings:
Which version of GRBL is actually running your laser? Because you have $30 set to 0. If you’re running 1.1, that number usually means the upper number for power values coming from LightBurn or other software, and it’s normally set to 1000. $31 should usually be zero.
Thank you for posting this. Not trying to make this more difficult, but things have been changing so I’d like a fresh look. For clarity, please post the following so we see the new setting changes/current configuration.
Type $$ into the console and post again
Screen capture your ‘Basic Settings’ tab of the ‘Device Settings’ window (click the spanner/screwdriver to expose)
Screen capture your ‘Laser’ window as well
This will give us a current look at the items we would like to check.
I see that you have selected the GRBL-M3 as your ‘Devices’ profile, and you are using GRBL 1.1f so I would change to using the GRBL device profile.
I am not sure about the $3=2 setting so I will leave that until I can confirm. I also noticed that you have ticked ‘Cut Selected Graphics’ ON (green), so you are outputting just the small oval in the center of the workspace. Just pointing that out.
Let’s start there and see your result after changing to GRBL profile. I will check on the $3 settting and post back.
Which GRBL should the profile be? I have tried all three and they all do the same thing. By that I mean, they move and the laser is on but it does not burn and if it does burn, it has skips in the line.
$3 is just a direction invert setting, so it reverses one or more motor directions.
You say that it’s not burning, or it’s skipping. Can you show the settings you are using for the black outline you show there? Double-click the entry in the Cuts / Layers window and post an image of that. Your firmware settings look ok.
I’m stumped, honestly. I don’t see anything wrong with your settings, in your firmware or in LightBurn, so if the laser is stopping, I’m at the point where I suspect it could be a hardware fault. I’m not sure what else to tell you.
