Raspberry Pi, Python

the plan was to look if someone entered a room, using some components I had laying around I made this in a few hours (mind that I have never done this before). on the software side, al I do is look if pin 18 is high if it is then I change pin 16 to high and low very fast in order for the buzzer to work. it was all coded with Python.

on the hardware side, I used a simple buzzer, motion sensor, breadboard and my raspberry pi 3.