You don't see too many interfaces between an Apple iPhone and Arduino so this one takes our interest. Nico Ritschel put together some handy code with Ruby and a Siri proxy that in a nutshell allows it to listen and send the commands to an Arduino, and then return with the result back to Siri. Although it may seem like overkill, it does work - for example:
You can find out the details and other notes from Nico's blog here. And for more, we're on twitter and Google+, so follow us for news and product updates as well.
If you're new to Arduino, the first step is a solid board for your projects - our Freetronics Eleven - the Arduino-Uno compatible with low-profile USB socket, onboard prototyping space and easy to view LEDs:
