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Clockwork USB charger
http://www.x404.co.uk/forum/viewtopic.php?f=4&t=17614		 Page 1 of 1
Author:  jonbwfc [ Sat Nov 10, 2012 12:22 pm ]
Post subject:  Clockwork USB charger
Very cool looking gadget, for those who fear the apocalypse is coming..

(aside from the obvious question that if you're somewhere without electric power, what are the chances of you getting a mobile signal anyway?)
Author:  paulzolo [ Sat Nov 10, 2012 6:50 pm ]
Post subject:  Clockwork USB charger
Can it power a Raspberry Pi? ;-)
Author:  jonbwfc [ Sat Nov 10, 2012 7:34 pm ]
Post subject:  Re: Clockwork USB charger
Full spec is here

Output is standard USB - 5V 1A. The thing's rated at 2000mAH. It kind of depends exactly how much power the rPI pulls but if it pulls 'full' USB power a fully charged one of those would power it for about half an hour, roughly, given my 'back of the beer mat' calculation.
I suspect you possibly could keep a rPI going with a bunch of them if you could figure a way to 'patch' power across between them without breaking power to the rPI. And you had some people who are happy to sit there winding. Given the manual recommends turning the crank at 120RPM and the charge time is 150 minutes, you're going to need six of them with 5 people winding and it's going to hurt.

It's all a bit mythbusters really :).
Author:  timark_uk [ Sat Nov 10, 2012 8:13 pm ]
Post subject:  Re: Clockwork USB charger
jonbwfc wrote:
120RPM and the charge time is 150 minutes
(8+0

Mark
Author:  pcernie [ Sat Nov 10, 2012 9:52 pm ]
Post subject:  Re: Clockwork USB charger
You'd need to be pretty desperate, wouldn't you? :oops:

I'm happy to say work covers most of my charging needs :twisted:
Author:  jonbwfc [ Sat Nov 10, 2012 11:07 pm ]
Post subject:  Re: Clockwork USB charger
I was thinking there probably are things I've done at 120RPM, just not for 2 and a half hours :lol:

As I say might be useful to have what is effectively a micro-generator if the apocalypse happens but I don't think it's a practical equivalent to mains power.
Author:  Amnesia10 [ Sun Nov 11, 2012 8:00 am ]
Post subject:  Re: Clockwork USB charger
jonbwfc wrote:
I was thinking there probably are things I've done at 120RPM, just not for 2 and a half hours :lol:

As I say might be useful to have what is effectively a micro-generator if the apocalypse happens but I don't think it's a practical equivalent to mains power.

It is useful only if you are regularly away from power supply.
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