Might be handy somehow.<br><br><a href="http://www.larsby.com/johan/e-bike/">http://www.larsby.com/johan/e-bike/</a><br><br><div class="gmail_quote">On Sat, Mar 6, 2010 at 10:10 AM, Karl Hammar <span dir="ltr"><<a href="mailto:karl@aspodata.se">karl@aspodata.se</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Giso:<br>
> Karl Hammar wrote:<br>
... [pedalling up/downhill] ...<br>
<div class="im">> > Well, then you need an accelerometer [1]. [2] is said to be in the<br>
> > iPhone, but you probably want something easier to solder.<br>
> ><br>
> > With it you could get the inclination angle and then get the applied<br>
> > force. If you do it right you could even get a crashing sound when<br>
> > falling...<br>
><br>
> I would recommend the 'bowsense' from Notam/Hans Wilmers:<br>
><br>
> <a href="http://lad.linuxaudio.org/events/2009_cdm/Friday/12_Wilmers/index.html" target="_blank">http://lad.linuxaudio.org/events/2009_cdm/Friday/12_Wilmers/index.html</a><br>
<br>
</div>Fun project that also, but note, with Bluetoth they need long time to start<br>
the connection. And they don't explain in [3], page 18, why they add<br>
epsilon * a to the gravity estimater.<br>
<div class="im"><br>
> It can measure the acceleration (including gravitation) vector in 3D,<br>
> and can transmit it at a rate of 100 or 200 Hz via bluetooth to your PC.<br>
> There you can transform it into OSC messages to control your synth<br>
> (together with the pedal rate). And the included gyrometer might improve<br>
> the the falling detection...<br>
<br>
</div>Isn't gyrometers a little expensive?<br>
<div class="im"><br>
> > [1] <a href="http://en.wikipedia.org/wiki/Accelerometer" target="_blank">http://en.wikipedia.org/wiki/Accelerometer</a><br>
> > [2] <a href="http://www.st.com/stonline/products/literature/ds/12726/lis302dl.htm" target="_blank">http://www.st.com/stonline/products/literature/ds/12726/lis302dl.htm</a><br>
<br>
</div>[3] <a href="http://lad.linuxaudio.org/events/2009_cdm/Friday/12_Wilmers/bowsense-lac2009-slides.pdf" target="_blank">http://lad.linuxaudio.org/events/2009_cdm/Friday/12_Wilmers/bowsense-lac2009-slides.pdf</a><br>
<br>
Regards,<br>
<font color="#888888">/Karl<br>
</font><div><div></div><div class="h5"><br>
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