Ladies and gentlemen, may I present to you, the Hoverlay II:

Yesterday night we set up the Hoverlay in our makerspace Attraktor in Hamburg, Germany and explored a bit more of the possibilities of the interactive midair projection.

All we got was a 3000 ANSI lumen home cinema grade projector, which is visibly less then the 5000 lumens from the projector I had in my university lab. Still, you get a good impression and it was lot's of fun. We tried everything from a skype call, particle effects, 3D viz painting and of course the hackaday skull. I hope you enjoy watching it!