PWM depending on Z axis value for engraving or Laser

tommylight wrote: What are the chances of superimposing a picture on the plot screen when i open a gcode file?

It would probably be possible. But you would need to find an openGL programmer who can do Python.

A GladeVCP tab to display the input image file is almost certainly much easier.

Oh goody, that can work too, as i need that picture to change so will give it a try later, now need some food.
Andy, Thank you very much.

Latest config with provisions for disabling PWM on program pause or stop and enabling on resume.
Edit:
Attached the latest config to the first post, also.