Solar backpack (Solar charger)

[Michal Brzozowski]

2009/5/21 Al Johnson <openmoko at mazikeen.demon.co.uk>

> If you want something effective for emergencies or extended periods away
> from
> power a mechanical device is probably more effective. For cycling a good
> dynamo will provide more, and more reliable, power than any bike-mounted
> solar
> panel. Other than that there are some good quality hand cranked generators
> available, along with a lot of bad ones. There are even a few devices that
> will take energy from irregular movement, a bit like a self-winding watch.
>

I'm looking for a bicycle or hand driven dynamo for use with Freerunner. Do
you have any links where to find such devices?
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