I know this topic has come up before and my head is starting to hurt from reading…
I am using a mini-rambo board.
I currently have the board in an enclosure. I’ve added start Gcode that sends a M106 P0 command at the start of a print to turn on the fans on the enclosure.
I’d like to take advantage of the M3 command to turn on a relay and start the spindle/router.
Can someone point me in the right direction for this? I’m assuming there’s something I’d have to do in Marlin to fix this. The mini-rambo has a second fan port I’m assuming I could use to implement this.