linuxaudio.org

Giso:

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> Karl Hammar wrote:

... [pedalling up/downhill] ...

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> > Well, then you need an accelerometer [1]. [2] is said to be in the

> > iPhone, but you probably want something easier to solder.

> >

> > With it you could get the inclination angle and then get the applied

> > force. If you do it right you could even get a crashing sound when

> > falling...

>

> I would recommend the 'bowsense' from Notam/Hans Wilmers:

>

> http://lad.linuxaudio.org/events/2009_cdm/Friday/12_Wilmers/index.html

Fun project that also, but note, with Bluetoth they need long time to start

the connection. And they don't explain in [3], page 18, why they add

epsilon * a to the gravity estimater.
> It can measure the acceleration (including gravitation) vector in 3D,

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> and can transmit it at a rate of 100 or 200 Hz via bluetooth to your PC.

> There you can transform it into OSC messages to control your synth

> (together with the pedal rate). And the included gyrometer might improve

> the the falling detection...

Isn't gyrometers a little expensive?
> > [1] http://en.wikipedia.org/wiki/Accelerometer

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> > [2] http://www.st.com/stonline/products/literature/ds/12726/lis302dl.htm

[3] http://lad.linuxaudio.org/events/2009_cdm/Friday/12_Wilmers/bowsense-lac...
Regards,

/Karl
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Karl Hammar                    Asp