I have a K40 and when I downloaded Lightburn I was told by their support team that they either use a Ruida controller or a C3D controller. I purchased a C3D controller and replaced the M2Nano per the instructions. Simple enough.
I then go to set up the controller under the “Devices” tab and low and behold, C3D isn’t even listed as shown on Lightburn’s own website. Hmmm. Then when I go to set it up manually, I select GRBL 1.1f and the laser head homes. I can move it all around the table and even run the program I created in LB. However, no matter what setting I use, the laser never fires. 10%-100% it doesn’t matter what I set the line to.
I try to connect to the device using the edit>machine settings and I get a message that LB failed to communicate with the controller.
I have to say, this more than a little disappointing. I spent well over $200 on the controller YOU recommended, Installed it per the given instructions, Connect the USB (not the blue K40 USB) go to devices (No C3D as shown on LB website), install GRBL, and it doesn’t work…