I have an older XCarve that uses the original control box and an old SO2 using an Arduino Mega2560 with a 4-axis port of GRBL. I’m trying to figure out how to wire a touch plate to either or both.
I have 2 styles of touch plate on hand. The standard z-axis touch and a 3-axis corner touch. The gcode for using these is all over the place but what I can’t find is where do I physically hook up the touch plate to the Arduino or gShield?
Does it connect to one of the limit switch inputs? Does it trigger from ground or +5?
Any help would be appreciated and thanks.