This wall projection makes gym class a giant video game Lü is an interactive light projector with 3D cameras. It’s designed to be the focus of gym classes. Facebook Prev Article Next Article Gadgets Checkout these cool gadgets... Related Posts Liquid Nanotech Vests To Protect Against Bullets Robotic F.A.C.E Apple's Amazing Elevator – Tokyo Monkey Controls Robotic Arm with Mind Mp3 Headphones Google Cr-48 Chrome OS Netbook