He used an Arduino, and multiplexed RGB LEDs with some digital potentiometers ... The RGB LEDs are lit via a completely separate set of circuits. Each row of like colored LEDs is brightness ...

While many of our seasoned Arduino-lovers can easily throw together the code for an RGB LED circuit in their sleep, [Kerimil] also threw in the Android app, and the source file to be modified in ...

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’ ...

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 ...