This was a fun project I made using a Raspberry Pi 2, its 1st party camera and a PIR sensor. I attached the sensor next my room’s door and turned it on when I went to school. It recorded a short video whenever motion was detected, i.e., whenever anyone entered my room. It was fun while it lasted. In the end, it was just not worth the hassle of recharging the power bank and attaching a display every day to monitor it considering I didn’t really mind my parents using my room.