I built a smart home using bluetooth with arduino when I was in high school. The mobile application was supported and I had made the mobile application using the mit app inventor. It's simple but of course you can't do every app. Hence 1.
View attachment 121290
The application is in Turkish, but the buttons say things like open the door, turn on the ventilation, set the alarm.
In the articles at the bottom, door, ventilation and alarm situations, etc. he was writing.