My possible paths are:
1) Most likely. Pre-defined shape entered into CAD package, but I need outside software to signal the CAD software to make a pass. This means that the machine will move very slowly based on external triggers.
2) Outside software simply triggers the movement of the router head, while the CAD software tracks location of the router and does overarching control. Think of this as an extension of mouse driven CNC.
3) Outside software directly writes to the stepper driver and moves the motors.
What does all the above mean? Are you capturing 1 raster source from a camera and wanting the router to machine the raster pixel by pixel?
Are you trying to overlay multiple images?