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 Self-Cleaning Toilet Is A Good News For Men ! Creepy Interactive Eye Ball Remote Control Brake for Bikes Stops Kid’s from Fleeing Ultimate BBQ Outlet Night-light That Turns On When It’s Dark It Looks Like a “Back to the Future” Hoverboard, But This Board is All Wheel and Can Hit 16MPH