harvesting energy

[Tony Anderson]

Has anyone estimated the work required to charge an XO? Mike Lee gave a 
demo some time back at the Washington D.C. Learner's Club which seemed 
to show that it would be a difficult workload for an adult athlete to 
charge a laptop.

Tony

On 10/27/2011 12:00 PM, devel-request at lists.laptop.org wrote:
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>     1. Re: harvesting energy (Chris Leonard)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Thu, 27 Oct 2011 11:51:02 -0400
> From: Chris Leonard<cjlhomeaddress at gmail.com>
> To: Kristen Eisenberg<kristen.eisenberg at yahoo.com>
> Cc: "devel at lists.laptop.org"<devel at lists.laptop.org>
> Subject: Re: harvesting energy
> Message-ID:
> 	<CAHdAatb59OU2jiZ=aKBOff2jofq0QNS9n16YjUub169KrTWsjg at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
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> On Thu, Oct 27, 2011 at 7:23 AM, Kristen Eisenberg<
> kristen.eisenberg at yahoo.com>  wrote:
>
>> If we're talking about kids powering their own devices, I think the
>> way to go is to turn "work" into play. The merry go round/hard bar
>> swing would fit in this category.
>>
>> So basically, let's look at activities where energy exerted is ambient
>> anyway? What I mean is that the energy is being used up by the kids
>> anyway, so why not tap into those. An example is to give them some
>> variant of those "dance straps" meant to power cellphones before they
>> go off to run and play during recess and lunch break.
>>
>> One way to tap into this would be to create new playground
>> installation toys which can be used for harvesting energy.
>>
>> Q: how much abuse can a kinetic energy harvester withstand? A soccer
>> of basketball has a lot of kinetic and impact energy bouncing around.
>> I'd imagine that's too much abuse though, and whatever harvesting
>> mechanism would break from the forces.
>>
>> Would piezo work there?
>>
>>
>>
> FYI, this is exactly the concept behind PlayPumps for water pumping.
>
> http://www.playpumps.co.za/
>
> cjl
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