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 Control your PC with Thoughts The Small Rechargeable Necklace Vibe for Ladies Portable Washing Machine Hotel Clerk Robot A guy has made a prototype invention of his “Automatic Sunglasses” Lifeguards can work with these drones to save lives faster