I know more or less about openwrt but I'm a total noob when it comes to electronic and GPIO stuff. I'd like to create a doorbell that will send an sms notification every time someone presses the switch, how do I connect the doorbell switch to the router. Here's the schematic of my router:
Which GPIO pins do I have to connect the switch to and what package do I have to install to trigger an action once the switch is pressed ?