I was building the breadboard that @ogiewon provided for my setup a few weeks ago.
However, I decided to check the voltage before and after the resistor. Previously, I was getting 0V & 13V in this location but now I am only getting 0V & 5V.
0V – Door Open
5V – Door Close
Any reason why this voltage change occurred? Obviously 0V and 5V is more favorable oppose to 13V.
I added the resistor in between the circuit when checking voltage but it didn’t drop it at all. The voltage stayed the same. Basically put it between the wire before it hit the multimeter but no change. How do I wire the resistor?
Thanks
I didn’t mount the NodeMCU yet, as I am still checking voltage.