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...
Actually it does do the trick, Fons doesn't understand the british turn of
phrase: Jon is not implying an attempt to win the 2010 Tour de France
with his contraption, he is going to have fun on the way to work so I am sure
he can extract acceleration (from traffic lights, Fons, he doesn't actually want
to be the King of the Mountains or anything, not even give or take 5%) based
on the rate of change of a signal.
Regards, cynik.
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