When you need to quantify the color of ... an off-the-shelf RGB sensor and wire it up to an Arduino. Or you can go back to basics and build this reflective RGB sensor from an LED and a photocell.

If you’d like to get more specific, Michael Klements’ Arduino-based scanner lets you ... along with a 16×2 panel. An optional RGB LED attempts to copy the shade of whatever object you ...

For our latest workspace, we decided to skip the boring numbered keypad and build a custom RGB backlit keypad powered by an Arduino ... will change colors. By entering the correct color code ...

Here is a small demonstration changing color of the addressable LED WS2812B. Hardware and software for this single WS2812B experiment is given below. Before uploading the code (sketch) to Arduino, ...