Can't get my K40 to work on Lightburn

Hello,

A stock K40 is not supported by lightburn. If you want lightburn support, you need to upgrade your controller.

Here is a user with a related question:

See a list of supported devices here:

We currently support most Ruida, Trocen, TopWisdom, and GCode based controllers. Supported GCode controllers,include Grbl, Smoothieware, Grbl-LPC, and Marlin. Supported Ruida controllers include the RDC6442G/S, RDC6445G, RDC6332G, RDLC-320A, and R5-DSP. Supported Trocen controllers include the AWC708C, AWC608, and TL-3120. More controllers will be added soon, so if you don’t see yours listed, send us a message - maybe we’re already working on it!