Show HN: Crack – Turn your MacBook into a squeaky door

http://crackmacapp.com/

Crack - Squeaky MacBook Lid

A bored design engineer turned his MacBook screen hinge into a theremin.

The Verge
He's also the person who originally came up with the creaking door:
https://bsky.app/profile/samhenri.gold/post/3ly7252lx422d
sam henri gold (@samhenri.gold)

Did you know your MacBook has a sensor that knows the exact angle of the screen hinge? It’s not exposed as a public API, but I figured out a way to read it and make it sound like an old wooden door.

Bluesky Social

I believe this was originally explored by Sam Henri Gold, at least that's the first time I saw it a while ago :)

Links:
https://samhenri.gold/labs/20250906-lid-angle-sensor/
https://github.com/samhenrigold/LidAngleSensor

MacBook Lid Angle Sensor · Sam Henri Gold

Did you know that you have rights a lid angle sensor in your MacBook? The human interface device utility says you do.