Troubleshooting: Connection Problems
Can't Connect Laser to Computer✉¶
First steps:
- Make sure your laser is turned on
- If you're connecting with a cable, make sure it is plugged in securely on both ends
- Close any other control software that might be communicating with your laser
- Make sure you've selected the correct device in LightBurn, and that the controller type and connection method are correct
If you still can't connect to the laser:
Laser Doesn't Stay Connected To Computer✉¶
If your laser connects to the computer but doesn't stay connected, please try the following:
Laser Behaves Unexpectedly✉¶
If your device is restarting when you try to use it, you are most likely experiencing either communication problems or brief losses of power. This is often visible when a device set to home on startup homes unexpectedly. Please try the following:
If you're experiencing unexpected behavior from a device not originally intended as a laser, such as a diode module mounted to a 3018 CNC router, you may need to adjust the settings:
Laser Is Connected, But Not Responding✉¶
If your laser appears to be connected to the computer but is not responding, try the following:
- If your device has a screen, check for error messages or alarms
- Some enclosed lasers have sensors to detect if the lid is open, and will not run until the door is closed and the error is cleared
- Some lasers with water cooling have sensors to detect the flow of water, and will not run if they don't detect water flow
- Check to see if the correct serial port is selected, if relevant
- For GRBL devices, check the Console Window for Errors and Alarms