stribe + MIDIbox = awesome app!!
From tk of midibox.org: "...Most of you guys are using Arduino based hardware, therefore I'm not sure if you are interested in an alternative approach, which is based on the MIDIbox hardware platform and MIOS. As the name implies, the focus is on MIDI communication instead of OSC via USB, accordingly this solution covers different usecases.
"The main difference to your current approach is the autarkic firmware, which doesn't require a computer to process the sensors, handle the LEDs, and to communicate with other MIDI devices. This might make it less flexible for experimental stuff, on the other hand I can easily add a LCD, buttons, more LEDs, rotary encoders, etc... - everything which is provided by MIOS - and control my MIDI synths directly..."