POV displays are fun and there are many ways of building them. Rucalgary decided to go with 64 RGB LED display in a tube. He assembled an aluminum frame where all electronics sits. POV display is controlled by Atmega1284p which have just enough SRAM for storing images.
It is still initial version of software which shows demo image. He’s working on adding ZigBee (or Bluetooth) based image update. And yes, the vibration when spinning, but overall this looks great and with little balancing it is impressive piece of art.