RAMPS 1.4 (Springter) End stops not responding (5 replies)

Hi all,

I'm having trouble with all my MK1.2 mechanical end stops. I soldered two wires to the COM and NC, leaving NO with no connection. However, the X, Y and Z parts dont stop at the home position when they press down on the end stops. I dont think its the endstops themselves, since its not very probable that all three of them are faulty.

Any ideas on where i should look for errors? perhaps there is some firmware settings that need to be configured?

Thanks
Salim