The Lightbulb Computer: a projector that screws into your ceiling

Difficulty

Advanced

AI-buildability

3/5

The pointing detection, vision model calls and projected widget UI are software AI can write, but fitting a projector, camera and compute into a bulb-shaped housing and calibrating them is hands-on hardware work.

Time

A few weeks

Cost

$200–500

Estimates based on the original write-up. How AI-buildability is scored. Building with an AI assistant? Connect it to Afterware (free MCP server).

Instead of strapping a screen to your face, the Lightbulb Computer puts a projector and camera in a bulb-shaped housing that screws into any Edison socket. Point at the kitchen counter and a timer appears there. Point at a lamp and the smart home controls for it show up on the wall beside it.

The demos come from a real but bulky prototype, not renders or AI video. The designer's pitch is that projectors are getting smaller and brighter and vision models can now read a bookshelf in milliseconds, so the hardware is close even if consumer versions aren't. Privacy gets a hard-wired indicator light, a physical camera cover and on-device processing.

It's worth a look if you want a spatial interface that doesn't need a headset. The lamp-base mount, voice plus pointing input and shared wall-sized map are the ideas to steal.