With only a week left until Valentine’s day, [Henry] needed to think on his feet. He wanted to build something for his girlfriend but with limited time, he needed to work with what he had available.

Light painting, or taking a picture of a moving RGB LED strip with a very long exposure, is the application du jour of Arduinos, photography, and bright, glowey, colorful things. Hackaday alumnus ...

For the past three years, Italian smart lighting company Ledworks and its Twinkly brand have been selling smart, “paintable” LED string lights that have been a hit with Christmas tree crowd. Now ...