Hi,
I have been trying for almost a month now to make an Alarm system in Arduino in which it will be switched on or off through MIT app inventor and ask for approval when opening or closing a door (servo). I have been able to make a part of it work: if I scan for RFID access with a tag which is authorized, an specific Bluetooth string will trigger and be sent to the app. However, when I send it to the MIT App Inventor 2, it will trigger over and over the notifier which gives me the option to choose from either approving or disregarding the request of entering the house (therefore, it is non-functional, as I am unable to press any buttons as it will just keep refreshing the notifier every 10ms).
Is there any way so that if the "asc" bluetooth string is detected from my HC-06 module in Arduino, a Notifier will pop up on my app ONLY ONCE and immediately after it is sent?