![]() There are many possible ways to control RGB LEDs, so I made this project versatile by attaching the LED strips to a JST connector, allowing it to be easily powered by interchangeable microcontrollers. This project takes the effect one step further, giving both ends of each arc separate RGB LEDs to generate a color mixing effect. ![]() The edge-lit rainbow juxtaposes seven separate acrylic “arcs” and illuminates each one individually with RGB LEDs so that each arc glows with its own colors, independent of its neighbors. These edge-lighting effects are often seen in signage or décor used in dark venues ( see “LED Nixie,” Make: Volume 66). We can take advantage of light scattering by engraving patterns into the smooth surface of acrylic sheet then illuminating the sheet to generate a brighter glow at the etched spots. This internal reflection causes the light to suffuse the entire acrylic shape with a subtle uniform glow, even where it bends and curves. Inside polished acrylic, light rays reflect off the smooth inner surfaces, preferring to escape at the rougher edges or scatter at imperfections in the surface. This project takes advantage of some special properties of acrylic. Light prefers to take the shortest path, but under the right conditions you can make it bend and bounce, generating lovely effects in the process. Graphics and More to Help Spread the Word Learn More About the Amazing Maker Awards The top projects selected by community votes, panel judges, and the editorial team Subscribe to the premier DIY magazine todayĬommunity access, print, and digital Magazine, and moreīrowse all the projects and learn about their makers too! Share a cool tool or product with the community.įind a special something for the makers in your life. Skill builder, project tutorials, and more Get hands-on with kits, books, and more from the Maker Shed
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