OLPC Says Hand Crank Power Now Possible with XO-1.75 Laptop

   
   
   
   
   

Freeplay hand crank power generator at CES

Back when One Laptop Per Child designed its first XO-1 laptop, which ran off an AMD Geode, Nicholas Negroponte famously said it could be powered by hand crank on the side of the laptop. Well that was bunk, as Kofi Anna famously proved by popping off the handle. Next Negroponte said they would use a string generator. We disproved the physics of the yo-yo generator idea quite quickly.

Then came the homebrew power options, like the cow dynamo and the bicycle foot pedal. OLPC didn't have a good human-power model until Freeplay developed its Clap Charger. But even the Clamp Charger was too weak to recharge the XO's LiFePO4 lithium iron phosphate battery when the computer was pulling 5 watts.

Well now One Laptop Per Child CTO Edward J. McNierney claims that they've achieved a 1:10 power ratio - 1 minute of charging is 10 minute of usage - with the new 2 watt Armada 610 ARM system on a chip. Or only 2 hours of hand cranking to recharge the laptop completely.


Congrats to OLPC for a 2 watt laptop - that truly is an achievement, but I'm not sure I would want to hand crank for two hours to use an XO. I think I'd look like a fiddler crab after a few day's usage.

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  • Hi!

    I bought 2 "Tablets OLPC." I had to return because the two did not work. O …

    Comment on The XO Tablet - A First Impression in 750 Words

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  • Dear sir
    I have one question to sir?

    -1 why XO Tablet children play OK but when h …

    Comment on The XO Tablet - A First Impression in 750 Words

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  • Dear sir
    I have one question to sir?

    -1 why XO Tablet children play OK but when h …

    Comment on The XO Tablet - A First Impression in 750 Words

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  • Dear sir
    I have one question to sir?

    -1 why XO Tablet children play OK but when h …

    Comment on Guest Post: My XO Tablet Technical Review and First Impressions

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  • Bonjour Mokifisi!
    Je suis bien d'accord avec vous. Je travaille depuis 4 ans dans un petit …

    Comment on The XO Tablet - A First Impression in 750 Words

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  • You just follow the same route upstream how you got the 2XO Tablets? How did you get them? Bring …

    Comment on The XO Tablet - A First Impression in 750 Words

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  • └ quelle adresse envoyer mes deux XOTablet qui ne fonctionnent pas?

    At what address to s …

    Comment on The XO Tablet - A First Impression in 750 Words

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  • That's called "Death on arrivals". They happen. That's why there's always some additio …

    Comment on The XO Tablet - A First Impression in 750 Words

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  • What is a shelf XO? If you tell me what did you buy and from whom, perhaps I will have a suggest …

    Comment on Goodbye One Laptop per Child

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  • Voici mon message en franšais...

    Bonjour,
    Je viens d'acheter 2 tablettes XO. Les d …

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  • I just bought 2 shelves XO. Both tablets are not working. One does not start and the other touch …

    Comment on The XO Tablet - A First Impression in 750 Words

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  • I just bought 2 shelves XO. Both tablets are not working. One does not start and the other touch …

    Comment on Goodbye One Laptop per Child

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  • I just bought 2 shelves XO. Both tablets are not working. One does not start and the other touch …

    Comment on Goodbye One Laptop per Child

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  • OLPC is not death; eg. this One Laptop per Child San Francisco (OLPC-SF) June 21, 2014 Meeting a …

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