Unable to connect to Lightburn or LaserGRBL for Nano

1)  Using the wrong Type-c cable

Please  use  the data cable to connect the computer to the third port of

engraver. This is.

2)  Can not find GH430 driver

For Windows systems, it needs to right-click the computer and select Manage, click Device Manager, click to expand Ports (COM & LPT), find the port corresponding to the CH340 driver, and then select this port in LightBurn; that is, to manually choose the right port that the engraver is connected to by clicking where you see '(Choose)' in the Laser Window.

For macOS, please go to About This Mac > Overview > System Report, select USB under Hardware, and there will be USB Serial if the driver is installed automatically. Select the cu.wchusbserial14230 port in LightBurn by clicking where you see '(Choose)' in the Laser Window.

If no ports are listed in the drop-down, it means that no engravers were found, which could mean that it isn't plugged in correctly, isn't powered, or the PC is missing a driver. It needs to download the CH340 driver from the link and double-click it to install:

Tutorial Video for Installing CH340 Drivers on macOS Version 14 and Earlier, https://www.youtube.com/watch?v=FBd1uEA9QUw

Tutorial Video for Installing CH340 Drivers on macOS Version 14 and Earlier， https://www.youtube.com/watch?v=JX-XsjLFei0

https://drive.google.com/drive/folders/1Sc-TKuez-mz--38Vp6DeL-p GmQcQdHW4.

3) The GH340 driver port is occupied.

Before connecting,  please  make  sure  that  the  CH340  port  is  not occupied by software such as serial communication tools, cura, etc.

4)  The configuration file is not imported or damaged

For LaserGRBL, In order to meet the use of Nano Pro in LaserGRBL, it must to import custom buttons.  Right-click in the  blank area at the     bottom      and     select      Import     custom      buttons,     open LaserNano.zbn file to import, click YES to confirm, then there are three new Nano, Slide, Rotary icons, etc.

LaserNano.zbn file is stored in the software's directory of the SD cards. 

For LightBurn, it will prompt a 'New Device Wizard,' or click "Devices" in the laser control module to import the engraver. Click ‘Import’,  select the  Nano Pro.lbdev  file,  and  click  OK  to  add  the Nano Pro configuration to LightBurn. The macro commands will be successfully added in the Console window and Nano Pro device.

would appear in the list of devices to the right of the 'Devices' button in the Laser window when the configuration file is imported successfully.

5)  Baud rate setting error

If the baud rate is set incorrectly, the machine will be unable to connect.

LaserGRBL:

Select this port from the COM port list, and set the baud rate to 961200.