.System Integration.

What is it?

HOLOGRAPHIC FAN

HoloFan is a holographic fan display built around a high-speed spinning blade fitted with a NeoPixel LED strip controlled by a XIAO ESP32-S3.

As the blade spins, the LEDs flash precise columns of pixels at exact intervals — exploiting the human eye's persistence of vision to paint a floating 3D image in mid-air.

Taking it further, HoloFan also integrates a camera module that captures a live image, converts it to a dithered pixel map, and projects it back in real time through the spinning display — turning the fan into a holographic mirror. Point it at anything, and it reflects a glowing, floating reconstruction of what it sees.

The result: a self-contained holographic display that can render static images, animations, and live reflections — all from a spinning strip of LEDs.

Plan for the project

Parts list