Hello, I am just getting all of the wiring set up on my 3D printer. I am having a few problems with the endstop wiring. I am using an unedited config file. I got a set of mechanical endstops V1.2. I believe they are a makerbot design. Mine are made by Geetech. I believe the Pinout is 1-VCC 2-GND 3-GND 4-SIG. The smoothie board has 1-SIG 2-GND 3-VCC. I connected to Y-Min to test. I connected SIG to SIG and GND-2 to GND. I later switched pin 2-GND to 3-GND with the same result. M119 reports all six endstops as 1. I get 0 on y-Min when I close the switch. So that means that both GND pins are on a NO circuit and close when I hit the switch.
It look like the switch has both an NO and NC pin but ends up has four pins at on the board. I am just not sure how to wire it. I was afraid to hook up the VCC as the guide says I can destroy the board if I connect it to the other pins. Since Im not confident on the wiring of the endstop board that is a good possibility. The guide page makes no mention of connecting anything to the VCC so I figured a two wire setup should be fine as it just needs to check resistance over the line anyway. Any Ideas on how to wire this endstop for NC? Do I wire the VCC to VCC? Should I just pull the 3 pin switch off the board and try that alone?