BACKLIT BOX FOR QR CODES by GoolGaul - Thingiverse | Exposition numérique | Scoop.it
This is a backlighting box for the Custom QR Code generator. It uses 9 x 3mm white LEDs. Used it at SoliDoodle's 3D Printing Expo after-party. While it worked great in my lab, using my Android phone, with the AT&T supplied code scanner, ...