Post processor file? Can I have an example?

I would like to free my arm from it’s shackles and use other controllers to feed it g code to more intricately control it’s toolpath speed and focus to give more detailed and controlled function con someone help me with this? 4 sleepless nights and I still feel I’ve not quite got there yet. Surely I’m not expecting too much here??

Sorry, I am not quite sure what you are trying to acheive.
Would this example maybe help you

Or are you looking for a way to modifiy the toolpath of the uArm as laser engraver(because you used the word focus)