Controlling Router power relay automatically

[niget2002 (David Walling)]

I’m working on the same topic here:

Adding relay to the router

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 min…

I haven’t had a chance to try these suggestions yet.