Multiple PWMs...How to communicate?

I am working on a project that uses 12 High-power LEDs ( may need future expandability) that I would like to control brightness and on-off times from my arduino.
Would I need to wire 12 different outputs from the arduino? (I don't really know alot about this stuff....) I am hoping that it's possible to use 1 output and have all the boards in series (communication only). Is that possible?
I was thinking of using the 1-wire library and a digital potentiometer Mixed-signal and digital signal processing ICs | Analog Devices each independent LED....

hi, you can use a led driver to control many leds with few pins.
see http://www.arduino.cc/en/Tutorial/LEDDriver

Thanks YAIR for the suggestion, :slight_smile: but I am needing to control output brightness as well as on/off....similar to RGB controllers for led lights, but also need to control individual lights.

ho, try this thread