I don't know if this is the right section, so sorry if it isn't.
I'm building a DLP printer. I chose to use GRBL as the arduino controller software. Since it is a DLP printer, I won't have the X and Y axes, also I'll need a couple pins to enable some relay, so is there a way to disable X and Y in GRBL in order to use their pins for other functions accessible with custon GCODE?