LB stopped working, again!

[tgunr (Dave Carlton)]

I could not get LB to work with my iMac (see closed issue, I had to make this new one). So I went and bought a PC and it is running on a Ryzen7, 16GB RAM with Windows 11. The EXDACT same thing is happening again on PC, it connected yesterday to my Snapmaker 2 using the Snapmaker device and today it tries to connect and stays at ‘Waiting for connection’ forever. I tried the generic GRBL device and same thing. Lightburn doesnl’t like me and doesn’t want me to buy a license and I would really like to use it.

[berainlb (PY)]

Take a look at the remedies listed here. Try each of these and see if this resolves the issue.

AtomStack A5 Pro/MacBook Pro have to reinstall laser every time

4 potential remedies: Do you have this issue if you turn on the laser before opening LightBurn? Try right-clicking the Devices button in the Laser window. This forces a reconnect. Is the right port showing in the Port pull-down between the Devices button and the name of your laser? If not, try pulling that down and selecting the right port. Try reconnecting the USB cable while LightBurn is running.

[tgunr (Dave Carlton)]

Tried all the suggestions, no dice. But I did notice something, when I select the GRBL instead of Snapmaker it does connect but of course the SN2 does not recognize the commands being sent. Example,

echo:Unknown command: “���M�������������������M���M���M���M���M�M�����M�������M���������M�����M���M�M�M�������M�M�����”

ok

echo:Unknown command: “$I”

ok

Homing

echo:Unknown command: “$H”

ok

echo:Unknown command: “$H”

ok

[berainlb (PY)]

I’m not familiar with Snapmaker but found this Topic that steps through the installation. I think the main item will be setting DTR on in Device Settings.

Snapmaker 2.0 A350 Setup Guide

Hi all, As suggested by @jlropes here is rough guide which I hope will help other users to get their Snapmaker 2.0’s working with Lightburn Software. First steps with a freshly powered on SM2 is to use the calibration method in the controller taking into account the material thickness and the automated focusing and that sets a focus height that’s referenced in machine Z co-ordinate. Then set working co-ordinates X&Y to suit and that then refers to your bottom left reference in Lightburn. By d…

[JohnJohn (John Johnson)]

I often have to manually select the com port in the bottom row of the Laser window (middle of row)

I’m pretty sure your Snapmaker 2 should use Snapmaker. I believe it’s a custom version of Marlin.

Snapmaker seems to also need a CH340 driver -
https://snapmaker.com/snapmaker-2/downloads

The link PY posted above is excellent.