So, I did a bunch of research on this before I got started, I’ve been following the guide https://www.v1engineering.com/wp-content/uploads/2016/01/MPCNC-laser-add-on-walk-through-Rev2.0.pdf to setup my TTL laser and I’m at the point I need to make changes to the firmware, easy enough its just ardiuno but it seems there has been some changes to the firmware sense this guide was written. I tells me to make changes to the pins_RAMPS_13.h file which just includes the pins_RAMPS.h file now. Looking over that file it seems they’ve switched to macro defining all of the pins then using those defines as needed, can I just change
#define RAMPS_D9_PIN 9
#define RAMPS_D9_PIN 44
as the guide suggests to allow for the 0-5v aux ports to be used? or is there something else I should be doing now as this code has changed slightly.