Hello!
My idea is to use RP3 to detect presence (or absence) of the wifi device (android smart phone) and to toggle one GPIO pin on each connection/disconnection event. As first step I’ve created “hot spot” wifi and phone can connect to it, but then what? Obviously some kind of software has to “listen” for connection/disconnection event, or even - to check is desired phone is connected. Can someone advise me about what to look for.
Thanks!
Figured out - endless pinging and checking returncode.