For the past week, I’m working on creating device with a screen to show my indian parents if i’m in a meeting or not. So they don’t trouble me and come in my room unannounced when im in a meeting.

It’s build using ESP32 and a small screen which shows On and Off and the time till meeting is over. I learnt Fusion 360 and designed a small snap fit case and got it 3d printed.

I have a small electron app running in my mac os system tray which connect to esp using BLE and it also checks if Mac Camera is in use (using Apple logs) and then communicate it with the device.

Calling it Door Frame. Had quite fun making it as i learnt 3d design, c++ code using Platform IO and other fun stuff. Even designed a small binary protocol to exchange data over BLE

Wouldn't it be easier to just install a bolt lock on your door?