Dial up hues with this Arduino-powered, on-demand spray-can mixer ...

One of the problems with being a graffiti artist is that you have to carry around a different spray can for each color you intend to use. [Sandesh Manik] decided to solve this problem by building a ...

BMW showed us color-changing cars before, but Porsche has its own ideas. BMW, Toyota, and Porsche are developing color-changing paint technology for cars. Porsche's patent uses cameras to capture and ...