I currently use CR-laser 5W with Lightburn without problems in Windows and Linux. When I try to connect with Universal G-code Sender (UGS) software I get the message “Unable to detect GRBL version” and then disconnect. Port in Linux is /dev/ttyACM3 with proper permissions and GRBL version is 1.1e. I think this version is pretty old but still it should work to detect i guess.
Anyone with similar problem?