I have the keling inc. package with the 4030 drivers and a c10 bob. I would like to add limit switches. Does this setup require normally open or normally closed switches? How exactly do they wire to this bob. (keling's wiring diagrams are a bit vague for me.
Also, If you happen to know, I need some stronger couplings to attach the motors to the lead screws. I'm afraid of making them too strong as I want them to be the "weak link". Mine have proven to be a little too weak. Any Ideas? How strong should they be?