[Paul de Groot] wrote in to let us know about a drop-in controller replacement he designed for those economical K40 laser engravers that are everywhere on eBay. With the replacement controller, gre… ...

[Paul de Groot] wrote in to let us know about a drop-in controller replacement he designed for those economical K40 laser engravers that are everywhere on eBay. With the replacement controller ...

Finally, I aligned the X-Y coordinate system in the K40 laser with that from Inkscape (bottom, left instead of top, left) so your work layout in Inkscape matches exactly that of the laser.