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Can someone help explain how exactly this works? It casts a shadow that is a valid QR code? How does it cast a shadow? On what does it cast a shadow? It looks
by pud 14y ago
Can someone help explain how exactly this works? It casts a shadow that is a valid QR code? How does it cast a shadow? On what does it cast a shadow?
It looks awesome and someone clearly worked incredibly hard on it. I just want to understand it better.
- GuiA 14y agoIt's meant to be 3D printed. One you have that 3D printed cuboid in your possession, you point a flashlight towards one face, have the opposite face face a white surface, and scan the resulting shadow with a smartphone– and boom! It's quite insane.
- samstave 14y agoThe questions is, can any QR code be made to work or are you pretty limited in the info represented by the QR code? I don't understand how QR codes work well enough to know the answer.
- biot 14y agoYou can do this for any three sets of 1-bit images. There's nothing special except for ensuring that you have thin connecting pieces so that any "island" where material would otherwise be surrounded by empty space remains connected to other pieces.
- blaabjerg 14y agoHere[1] is the inspiration, perhaps it'll make it clearer. Imagine the letters that are projected onto the walls are QR codes. [1]: http://en.wikipedia.org/wiki/File:GEBcover.jpg http://en.wikipedia.org/wiki/File:GEBcover.jpg
- pbhjpbhj 14y agoI thought this was the inspiration - http://www.digitalsundial.com/ http://www.digitalsundial.com/. Fractal Sundial gives a "digital" reading using the shadow cast by obscuring sunlight.