Im looking to hook up an e-stop/pause button to my printer and I read in the config file pin 2.12 or 2.11 is a good pin to use. I was wondering if anyone has tried this with success. If you have did you use a momentary button and how did you hook it up to the board?? Any help would be great.
You can use any pin you want.
Then just setup a switch module to do exactly what you want : http://smoothieware.org/switch
On deltas there is a small problem. If you home the printer and press Suspend ( or change plastic) printer tries to move according to suspend gcode but cannot. So we need to add config parameter - if Z height above the parameter - turn off suspend gcode. I currently hardcoded this value, but think about config option for it.
My concern is hooking it up wrong and shorting out the board, should i use an EN1, DIR1, ST1 pin thru the switch to ground or is there a better option. Im only asking because i understand to pick a pin, just is there consequence for the wrong one??