Linux software for laser engraver
I am searching for a Linux software to control the 3000 mW laser engraver depicted below. It's a common model you'd find on AliExpress, Banggood, etc. under different brand names.
Did you have any reason to believe it would work under Linux? If you buy something unsupported then you are the support. These things don’t just automatically have Linux drivers, someone has to write them. If you get any useful messages when you try connecting it you might be able to ask on a Linux forum and see if you can get it to work. Also you’re going to need to be a lot more specific than “it doesn’t work”.
You say you've tried all the different software listed, but are you sure it's the software? How do you know the printer itself isn't defective?
This looks like a small Linux development project more than a laser marking or 3D printing project. Although it could be fun to help, you might get better information for the first steps (such as connecting the device to Linux) at the UNIX StackExchange site: https://unix.stackexchange.com . They handle Linux as well as Unix questions.
I just found https://github.com/aquamorta/kkengraver:
This software is intended to be used with a KKMoon laser engraver (3000mW). It comes with ABSOLUTELY NO WARRANTY. It may or may not work with an other kind of laser engraver.
Some good internet guy/girl reverse engineered the communications and dropped it into a nice Python script - web server included.