Remote Control with iPhone
The video below (and more, check out the related videos) depicts iPhone used for remote control. This is achieved with a free app called MRMR. From the developers site;
"Mrmr is an ongoing open-source research project to develop a standardized set of protocols and syntax conventions to control live installations and multimedia performances via mobile devices. The project is currently spearheaded by Eric Redlinger, researcher-in-residence at Brooklyn Polytechnic University’s Integrated Digital Media Institute (IDMI).
Simply put, Mrmr is a technology that enables you to use ordinary cell phones and PDAs as controllers in audio-visual performances, or to participate in interactive museum exhibits, or as a replacement for your computer in pretty much any situation where you would normally use a mouse or trackpad."But one Star Wars fan has gone ahead and used the application to control a servo and plans to do more. Currently he is controlling a life size R2D2.
"It was done with a microcontroller with an ethernet interface connected to a wireless router. The software running on the iPhone is called mrmr and can be downloaded from the app store for free."