First off, don't expect perfect results, that'll set you up for failure. Sounds like you want an accelerometer for x/y/z acceleration, and for position, you'll need to add something like a gyro or the wii controller's infrared camera tracking the light bar. Perhaps the Wii controller would be a good place for you to start?

On Dec 1, 2010, at 12:57 PM, J bz wrote:

Hey all,

I'm working on composing a piece within pd for viola in which I would like to attach some kind of sensor to the head of the instrument. The sensor must be capable of tracking the performers movements on the x,y,z axis', be undetectable for the performer, and be wireless. I'm not sure whether something arduino or some sort of bluetooth device would be preferable?

Would be very grateful if any listers have any experience in these matters and could recommend some devices, pointers of things to watch out for (bluetooth in concert venues for example), general sturdiness of various items, etc.

Many thanks, and best wishes,

Julian
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