As part of my research into interactive architecture, I have come across some very interesting ideas for designing and implementing feedback interfaces.One such idea was embedded in the wii remote, as discussed in an earlier post on the pixeltag project. Another such test we worked on in the interactivation lab is the connection of the wii to other items or devices such as an LED light.
The example shown below is done using the Arduino software interface, an Arduino Diecimilia hardware interface, some nifty arduino-max/msp connection patches and of course osculator to input from the wii.

Wii to LED from Jason McDermott on Vimeo
These kinds of tests are very exciting as they point to an expansive array of possible interface connections, especially those that do not require complex processing or connection to a computer. The example Arduino kit used was connected via USB to the computer, but could just as easily been connected to the computer via the arduino bluetooth module.