[LAU] A crazy idea

[Karl Hammar]

Fons:
> On Thu, Mar 04, 2010 at 11:39:40AM +0000, Jonathan Gazeley wrote:
> 
> > Nick Copeland suggested simulating the force applied to the pedals by 
> > calculating the rate of change of the cadence. I reckon that might do 
> > the trick.
> 
> It doesn't. Just consider going uphill 5% or downhill 5% at
> the same and constant cadence. Makes some difference to your
> legs and to a motor.

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...

Regards,
/Karl

[1] http://en.wikipedia.org/wiki/Accelerometer
[2] http://www.st.com/stonline/products/literature/ds/12726/lis302dl.htm

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Karl Hammar                    Aspö Data               karl at aspodata.se
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