Peephole

A tiny display for the back of your laptop that shows what you're working on.

I might turn this into a thing you can get.
Drop your email if you're interested.

How it works

This is a prototype using an ESP32-2432S028 (aka "Cheap Yellow Display") connected via USB. A Python script captures a region of the screen, compresses it to JPEG, and streams it over serial. The real thing would come in a proper case, not a naked PCB.