[Steve] from Hackshed did just this: he integrated an Arduino based webserver into a new network controllable RGB lamp. What makes this lamp unique is that the RGB LED bar comes from an old Epson ...

The diodes on the PC board prevent feedback across the rows and columns. The RGB LEDs are ... To ground the LED busses, we’ll be using four 2N2222 transistors. The Arduino will trigger each ...

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 ...