Here is a new video of
L'heureux cycleur = Happy cycling
This is a student project INSA Lyon 1er cycle 2011-2012
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The energy from the cycler can be stored in a spring. The eblock display, the sensor and the microcontroler allow to see how much energy is store in the system. Once enought enegy is in the spring, the mechanical battery can be removed, transported and used as electrical energy.
This system, unlike standard chemical batteries, allow a very quick charge and a slow use.