SparkFun LED - 3mm Cycling RGB (fast) Displays A simple slide potentiometer can

A simple slide potentiometer can go a long way

such as Canon Rebel T5i T4i T3i T3 T2i T1i XS XSi XT XTi SL1

We also have this charger with a mini-USB connection as well

You will still be able to program an Aruidno Pro

but they are the same module

SparkFun LED - 3mm Cycling RGB (fast) Displays A simple slide potentiometer canThese color changing LEDs take the work out of creating crazy, flashy, blinky ness. Simply apply power and the LED will cycle through the RGB colorspace: no external controller necessary! These bright and festive LEDs make great decorations, LED throwies, indicator lights, etc. Typical forward voltage is 2V. These 3mm LEDs are of the fast changing variety, meaning they fade cycle very quickly through several colors and then flash cycle through several