= Tiltphones
-----------------------

The 'tiltphones' are a motion-sensitive iPod remote control. Electronics built
into some over-ear headphones pick up what way your head is tilting and 
sends commands to your iPod accordingly.

To see it in action, watch this quick video:


 = Motion-sensitive gestures
-----------------------

At the moment, the tiltphones only recognise a basic set of actions, but there
is plenty of scope for experimenting and making it "smarter".

So far, the user can:

* Tilt head left, have volume decrease slowly until head goes upright.
* Tilt head right, have volume increase slowly until head goes upright.
* Tilt head left and immediately upright, to skip to the previous track.
* Tilt head right and immediately upright, to skip to the next track.
* Take off the tiltphones and lay them flat, to have the iPod pause.
* Pick up the tiltphones, and the iPod will resume playing.

 = Technical details
-----------------------

* Microcontroller: Microchip PIC16F690 (20-pin DIP)
* Tilt sensor: ADXL320 (Analog Devices triple-axis accelerometer)
* Headphones: Sony MDR-80, with lots of extra space inside!
* Serial communication with the iPod at 19200 baud, using the Apple 
    Accessory Protocol
* Connects to the iPod with a third-party iPod dock connector.
* Extra components powered by the iPod.

 = Exposure
-----------------------

This project was presented at DATA event number 28 on March 13th, 2008.

            
            (Photo from Ralph Borland)