LED Turbine Lighting Effect
Here's a small part of a project I've been working on, trying to evenly illuminate multiple tubes for a "turbine" effect. A bit like a lightsaber, the goal is to avoid lighting hot spots in the tube. Tried many different things, this setup worked best. Big soda straws (Walmart!) with a strong 5mm white LED inside one end, bit-banged PWM from tube to tube. The unlit end has a waxed paper diffuser inside to spread the light around. 6 tubes would make a full cylinder, but I only used 4 since the other 2 aren't visible. Maybe this will help somebody someday. https://www.youtube.com/watch?v=QORTkjfEliI