Intro&Tools :

This project is using tone() with Arduino to make noise in an easy way.

You will need:

8 wires

1 piezo speaker

1 supersonic sensor

1 breadboard

BE CAREFUL WHEN YOU ARE USING THE PIEZO SPEAKER, IT IS FRAGILE!!!!!!!!!!!!!!

here is the code : https://create.arduino.cc/editor/AlisaLiang/d992f9fd-6fd9-464d-b5c7-4f0bb4a1db38/preview

connect the breadboard to your computer

you can try to get close to the supersonic sensor, it will make some noise when you get to a specific distance