Contact sensor status

[abdoshamma]

Hi I've used the contact sensor example I've connected the contact pin to gpio and I pulled it up using 100k ohm resistor However when I close the contact sensor it's working perfectly and changing the state but when I open it it do nothing It's only changing the state back if I connect the gpio pin (contact pin) to 3.3v again My question it's a hardware issue or thers something like loop to keep checking if the contact pin is high or low and update accordingly

[abdoshamma]

[abdoshamma]

i found its my mistake