Adding a physical sound output

I had access to a buzzer piezo and hence used it to create sound and have a physical output other than an LED. Also used a potentiometer to then modulate the output of the same.

https://video.wixstatic.com/video/e9ea22_98c12fdc690b480091ae9602efd24067/1080p/mp4/file.mp4

https://video.wixstatic.com/video/e9ea22_9726f640301740c791a8c201f474e09f/1080p/mp4/file.mp4