The pins available depend on which board you have and whether you have a RRD GLCD module attached. There are some potentially available pins near the network connector on the left side of this diagram:
If you have a 4 motor driver board, the pins for the 5th driver are available, etc.
See also: [
smoothieware.org] (search for the word "spare")
Edited 1 time(s). Last edit at 03/16/2018 07:16AM by the_digital_dentist.
Son of MegaMax 3D printer: [
www.instructables.com]
Ultra MegaMax Dominator 3D printer: [
drmrehorst.blogspot.com]