I do not use an Arduino and shield for control on my K40, rather smoothie running smoothieware.
I get questions on how to interface an arduino-shield to the LPS.
So I am trying to get more informed on this setup so that I can provide accurate help.
What I learned from research is that when using an Arduino and sheild:
- Laser Mode must be enabled in GRBL
- The Arduino pin D11 is used for PWM output and is HIGH true
- M3 & M4 gcodes enable the laser
- Laser power is controlled via the S parameter
For those of you using Arduino-sheild-grbl for controlling a K40, can you tell me if the above are correct?
Is D11 always the Arduino port that is used for PWM control?