Inspired by this and my lack of trust with the smartlocks & SmartThings I used a ecolink sensor and the pressure resistor to create a deadbolt sensor. I just really wanted to see the status of my deadbolt since I often lock it but then can’t remember if I did or didn’t lock it.
I ran the wiring behind the trim and added a piece of Velcro on the resistor to protect it from rubbing the deadbolt. So far works pretty well.