Since power meters for cycling are Quite expensive ( 800 - 2000 € ), I'm wondering if there exist any way to implement measuring force in pedals of bycicle using arduino??
I want build a simple power metter that would be cheap and easy to implement (add to pedals).
My idea is to put somekind of a senzor on my pedals like we can see here:
And then read value from that senzor.
Does any of you have an idea how can I implement it? Or at least give me feedback where to look and what for?
Since power meters for cycling are Quite expensive ( 800 - 2000 € ), I'm wondering if there exist any way to implement measuring force in pedals of bycicle using arduino??
To measure power you need to measure (rotation) speed and torque of a moving shaft. The latter is
a hard problem, its basically difficult to measure the mechanical condition of something that is rotating.
If this is an exercise bike (not a real bike) then we can be the load, and measure the torque on the
stationary part of the braking/load mechanism. A strain-guage or loadcell placed appropriately could
monitor the braking torque well, and speed is simple to measure.
Monitoring power to the wheels on a moving bicycle is much harder as that forces measuring a rotating part.. A battery powered wirelessly-communicating device on the pedal would be one way.