Vivan Gupta Fab Academy

.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

    Task at hand

    The biggest challanege with system integration in my project was that there were 2 distinct systems that lie in my project

  • 1. the blade where all my components sit including power and pcb.
  • 2. the base where all computatin happens and recording happens which is sent to the blade.

    • This meant carefully deisgning a body that can house 2 sytems without looking jagged. and of course soemthing that WORKS

    to betetr integrate my systems i redesigned the blade and more to be extremly detailed in sense of almost an actual injection moldable product with multiple parts.

    This is how my blade looks like assembled

    These are the mutiple parts i have diveded the same blade in

  • top acrullic protection
  • led strip holder
  • main blade
  • electronics housing
  • housing cap
  • motor coupling hub

    • This is the housing for the drone motor.

    It had holes for m3 bolts to firmly hold itself to the base.

    The base had corresponding holes with threaded inserts for holfing the motor housing.

    All srew holes outside the body were designed with finish in mind, with steps so that the screws and bolts stay flush.

    The top half the base also was designed in two parts with a magnetic snap to provide easy assembly of the blade system to the base system

    The multipart reduced print time, increased freedom as broken part only meant a 30 minute print. and overall housed the entire project super well.

    electronics

    just body wasnt enough, the electronics also had to be desigend to support the system integration.

    i kepot things simple for now but eventually my plan is to mke a single thin pcb that gets completly hidden behind the blade.

    This was how I prepped my esp32 s3, i highly recommend doing this as the bottom pns can catch conducting signals or misalign and short the board.

    This is how the board fit onto the blade.

    This is th encasing for the clay that I used to stabilize, to know more about the clay hack. click here

    This is how i braced the battery in place with a custom 3dprinted part.

    heres how the blade system was turned on with a rocker switch.

    download section

    I have added all the same files to final project download dection pls access from the same