Hi , I have openhab2 configured on Rasberri Pi, I Have openhab app installed on Android Phone.
I want when Suppose for example If I Switch On Lights (Phillips Hue) by switch. My Openhab app shoud be updated and all my lights button on android app should be in On State.
How should I Do this. Is MQTT will Help me in this?? If yes , Is there any tutorial On That???