Giso: > Karl Hammar wrote: ... [pedalling up/downhill] ... > > 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, > 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 > > [2] http://www.st.com/stonline/products/literature/ds/12726/lis302dl.htm [3] http://lad.linuxaudio.org/events/2009_cdm/Friday/12_Wilmers/bowsense-lac2009-slides.pdf Regards, /Karl ----------------------------------------------------------------------- Karl Hammar Aspö Data karl@xxxxxxxxxxx Lilla Aspö 148 Networks S-742 94 Östhammar +46 173 140 57 Computers Sweden +46 70 511 97 84 Consulting -----------------------------------------------------------------------
_______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
