Tellart turned an iPhone into a duiPhone with its latest Sketchtools kit. Combine a 3G iPhone, an ordinary store-bought breathalyzer, and the NADA Mobile, which consists of a communication board, sensors, and actuators, and get a useful iPhone application. Blow into the mouthpiece, and the iPhone will inform you if you can safely drive, or if you should call a cab.

We’d like to find out more about the NADA Mobile, since it looks like it could be the start of a lot of fun projects. It’s the latest of Tellart’s Sketchtools line, which can only be accessed if you work with Tellart as a consultant, or if you work with them to organize a workshop for your organization.

[via Digg]

German designer [Michael Schoner] of NL Architects turned an ordinary street bench into a public sound system that can be accessed by passersby with iPods and cellphones with Bluetooth. Boom Bench features 60 watt co-axial speakers, two subwoofers, and a bass shaker in the seat that’ll allow you to feel the vibrations of your music choices. It was on display in Amsterdam last month for the Urban Play event. It remains to be seen whether this new urban development will make your daily wait for the bus more entertaining or aggravating.

[via Notcot]

Add lights to your graphing calculator. Do it now. [Sil3ntP8nd8] added some, and seems to have done a decent job. They are spread around the back, supplying a nice even light on, well, on whatever is under your calculator. It may be difficult to see too much detail though on account of the water marks. You have to protect your intellectual property though. This almost compares to the DS LED monstrosity we covered recently.