If you’d like to get more specific, Michael Klements’ Arduino-based scanner lets you quantify colors in numerical RGB values via a TCS34725 sensor. User interface for the handheld device is ...

[Fjord Carver] brings together an RGB ... colors, then used to extrapolate the RGB value of the test material. We saw the very same method used a couple of years back. This time around it’s an ...

He used an Arduino, and multiplexed RGB LEDs with some digital potentiometers to create a color mixing keypad ... 5 to Arduino pin 10 Connect pot pin 7 to Arduino pin 11 Connect pot pin 8 to ...

For prototyping, Infineon has a RGB LED lighting control shield for Arduino, based around its ARM Cortex-M0 XMC1202 microcontroller. On board is something called a ‘brightness colour control unit’ ...