I need to build a sensor.
All it needs to do is to register a magnetic reed switch in either n.o or n.c position. Dry contact. No power. Just continuity. Seems like an impossible incredibly expensive offering… People are crazy for the prices they are asking for something like this.
I am assuming the TTN Node can do this? Can I just connect 2 wires to where the button is and when contact is made it registers when the switch closes?
This is going into an existing case. I was wondering if I can purchase just the pc board and not the weatherproof cover.
There has to be a cheaper board/option to do this simple thing? It shouldnt cost 60 bucks a board. More like 10 maybe 20 dollars.
I am greatful for any help.