DUST:
This appears to be what I missed.
To verify- Your saying the end stop switch that was Y-Min and is now Y-Max has to be physically plugged into a different set of pins on the Ramps 1.4?
This appears to be what I missed.
To verify- Your saying the end stop switch that was Y-Min and is now Y-Max has to be physically plugged into a different set of pins on the Ramps 1.4?