Connect RAY5 mini/miniS/5-40w to LaserGRBL

You need to connect the engraver to LaserGRBL software first. For Windows, right-click This PC and select Manage, then click Device Manager. Expand Ports (COM & LPT), find the port corresponding to the CH340 driver, and select it from the COM port list. Set the baud rate to 115200 baud rate, and click  to connect.

When connected to the correct port, GRBL will reply with a “welcome message” showing the GRBL firmware version. On the bottom-right of the LaserGRBL interface, it will show “Status: Idle”.

If no ports are listed in the drop-down, it means no engraver was found, which could indicate it's not plugged in correctly, is not powered, or the PC is missing a driver. In that case, click the Tools menu to install the CH340 Driver from LaserGRBL software.