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Power Scheme for OLPC Project Falling Into Place

robotrachel writes "According to Technology Review, the $100 laptop intended for children in the developing world will be powered in much the same way that you might start an outboard motor on a boat. The new power system will 'make the laptop much easier to power than it would be with a hand crank, in part, because the users will be able to operate the generator in a variety of ways, including holding the device (the size of two hockey pucks) in one hand and pulling the string with the other, or clamping the generator to a desk, attaching the string to one foot, and using leg power.'" There are plenty of sewing machine treadles in the world, too -- I hope someone can figure out a way to combine them with the new design.

27 of 126 comments (clear)

  1. Great by tweek · · Score: 5, Funny

    There are plenty of sewing machine treadles in the world, too -- I hope someone can figure out a way to combine them with the new design.


    The next generation of geek will have massive calfs and thighs instead of a single massive forearm ;)
    --
    "Fighting the underpants gnomes since 1998!" "Bruce Schneier knows the state of schroedinger's cat"
    1. Re:Great by tktk · · Score: 5, Funny
      You underestimate the power of porn.

      Geeks will always have one massive forearm.

    2. Re:Great by rHBa · · Score: 2, Funny

      RSI 2.0 for the WEB 2.0

  2. I want one! by QuantumFTL · · Score: 4, Interesting

    These machines are actually starting to sound like something some people in the US might even like. I can imagine sitting outside in some remote area, working as much as I like without even worrying about running out of batteries (and getting exercise at the same time).

    What'd I'd really like to see is an inexpensive laptop which has a screen that's highly visible, even outdoors. I could get a lot of work done that way, and work on my tan at the same time. Does anyone know of any? I'd assume it'd work best with grayscale.

    1. Re:I want one! by Fusione · · Score: 5, Informative

      What you're asking about is transflective lcd displays. Basically, a semi transparent mirror is placed right behind the lcd panel, with the backlight and backlight substrate behind it. So the traditional ccfl backlight shines through (at reduced efficiency) AND ambient light is reflected back out through the screen by the mirror. Look at any decent pocket pc, and you'll see this technology at work. So screens that can be read without any backlight do exist, and there are some notebooks that incorperate the tech.. but you won't find them at the local electronics depot. I haven't looked into them in a long while, but check out the panasonic toughbooks. I remember they used to have transflective options for this series of notebooks!

    2. Re:I want one! by Duwke · · Score: 3, Informative

      I've seen the "view-anywhere" screens on the motion computing tablets, and it's quite impressive. If you ever have a chance to play with one, definitely check it out. http://www.motioncomputing.com/products/promotions _view_anywhere.asp#vad

    3. Re:I want one! by Kadin2048 · · Score: 2, Interesting

      Well, I'm not sure if it's been dropped from the OLPC at this point, but early prototypes were supposed to have a screen that either worked in color (with a backlight, I think) in dim/indoor light, or as passive high-contrast monochrome displays (with higher resolution and longer battery life) when in direct/bright light. I'm not sure where I read this; I think it was in a Wired Magazine article.

      Sounded pretty neat to me. Until a while back, I had a monochrome-display Apple laptop that I still used for basic word-processing/email/Telnet text-based stuff, when I was sitting out on my deck next to the pool. I didn't care if it got wet, and it was the only machine I've ever owned that worked well in bright sunlight. You could just turn the backlight on the screen down to zero, and still read stuff. (Unless you had the sun glare right in your eyes; then it wouldn't work obviously, but anything else it was good for.) In the end, its battery died and that was all she wrote, but even as it was getting old, it could still run for an hour or so without the screen backlight.

      If the OLPC incorporates such a screen, I really would like to see them become more common. I'd love the ability to switch from regular-rez color to high-resolution, low-power monochrome when I'm working in well-lit environments.

      --
      "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
  3. Solar Cells? by digitaldc · · Score: 4, Interesting

    I am not sure if something like this is powerful enough or even cost-effective, but what about solar cell technology to power these laptops?
    Was this even considered?

    --
    He who knows best knows how little he knows. - Thomas Jefferson
    1. Re:Solar Cells? by SnarfQuest · · Score: 3, Insightful

      Ok, $30 for something that can temporely power a cell phone. Assume 4X for the power requirements of the $100PC, giving a $120 to power the PC.

      Ok, after spening $120 for the solar cells, how much is left over for the $100 PC?

      Or, if you decide to only use 3 of these cells (for $90), you have $10 for the rest of the PC. I'm sure that can make a useful PC for less than the cost of a cheap calculator.

      Heck, 1 of these is almost 1/3 the price of the entire $100 PC. And then it will only work during clear daylight hours. If you add batteries for continuous work, then you will have to leave your PC out in the sun when you go to work. Good opportunity for someone to collect up several of these (theft) sitting out in the open. Even if the theif only got $1.00 for each one of these he stole, that is still *very* good money in many of the countries being targeted, where the average wage is often less than $40 per year (less than $1.00/week).

      --
      Who would win this election: Andrew Weiner vs Andrew Weiner's weiner.
    2. Re:Solar Cells? by Surt · · Score: 4, Insightful

      Probably not ...

      1) Doesn't work in the dark.
      2) Expensive (that little one, only powerful enough to charge a cell phone battery, $30 ... this is the $100 laptop).

      --
      "Who is the Journal of Quantum Physics going to believe?" --Stephen Hawking
    3. Re:Solar Cells? by brunson · · Score: 4, Funny

      Plus, it involves geeks going out into the sunlight. I, for one, don't want to lose my unhealthy pallor.

      --
      09F911029D74E35BD84156C5635688C0
      Jesus loves you, I think you suck
  4. Yo-yo by bobs666 · · Score: 2, Funny

    Make the string the power coord and you could have a yo-yo.

    Fun and power.

  5. Open Popular Mechanics by Doc+Ruby · · Score: 3, Interesting

    The best mechanical coupling design would have a open interface. A rotating bolt that can take the pullcord attachment, or a sewing machine pedal cam, or a bicycle tire clip, or a homemade windmill/waterwheel/goatwheel, or any mechanical rotation.

    Then include in its desktop a link to a blog for new powerup inventions worldwide. Necessity is the mother of invention, and local materials the father. Give these kids a way to improve and share, and we'll all get the benefits of their unique insights. What better way to harness the power of global kids?

    --

    --
    make install -not war

  6. Profit? by Red+Flayer · · Score: 3, Funny
    There are plenty of sewing machine treadles in the world, too -- I hope someone can figure out a way to combine them with the new design.
    That gives me an idea -- I'm going to ride the technology wave by converting all the 8-year-old sewing-machine-treadle-operators in my sweatshops into 8-year-old server-farm-power-treadle-treadlers.

    To anyone who objects, please note that this is a carbon-neutral technology and therefore won't contribute to global warming except for the hot air from 'activists.' The Free Market -- gotta love it!
    --
    "Trolls they were, but filled with the evil will of their master: a fell race..." -- J.R.R. Tolkien on Olog-hai
  7. Power... POWER! by mobby_6kl · · Score: 2, Funny
    [..] or clamping the generator to a desk, attaching the string to one foot, and using leg power."

    Why not just attach the string to an electric motor? That way the legs/feet would be free to operate the rudder pedals.
  8. Aha! At last the GET-RICH scheme is revealed... by bratwiz · · Score: 5, Funny


    Aha! At least the get-rich scheme is revealed... hook them on pull-string laptops and then sell them replacement strings when the string breaks... ingenious! My hat's off to you Nicholas Negroponte!!! :)

  9. But you can own your very own... by 4solarisinfo · · Score: 5, Informative
    Don't forget boys and girls, You too can own what is sure to become the ultimate geek accessory and make a charitable donation all in one fell swoop. Sign up now to donate $300, recieve one computer, and know you've sent two where they are needed.

    http://www.pledgebank.com/100laptop

    Well, maybe you can own one, but your only chance of getting one in the US is probably to sign the pledge to convince everyone it's a viable solution.

    1. Re:But you can own your very own... by Constantine+Evans · · Score: 2, Insightful

      That pledge seems doomed to failure. Having 97000 more people sign up before the end of October is inconceivable - it would require around 3 people signing up every 4 minutes for the next 90 days. The petition is worded in a way such that if there are not 100000 signatures, none of the pledges are valid: nothing less than a fully successful drive can be submitted for consideration. Even then, it would only be a suggestion. Articles on the laptops have repeatedly stressed that these will not be for sale, and I don't recall anything that indicates something like this is even being thought about by the association itself.

      Unfortunately, due to the demand for them in demographics such as the Slashdot readership, this probably means that there will be a somewhat lucrative market for laptops taken from or sold by the students. The colour and other such anti-theft features won't prevent them from being desireable to people who actually want the specific laptop. While there will certainly be abuse in these sales, if a student can sell their laptop for $400 and then claim to have lost it, using the proceeds from the sale to purchase a replacement, then the only ones hurt by the sale will be those who subsidise the production. It may be that OLPC will be compelled to sell to the general public for this reason.

  10. Re:Do they really need a computer by Ksevio · · Score: 4, Insightful

    Well you know the old saying about the man and the fish.

    Sure you can give them food and water, but if you also try and get them computers to learn then they might be able to pull future generations out of poverty and improve the overall living conditions of everyone in the area.

  11. Re:Is it just me or .. by NetRAVEN5000 · · Score: 2, Insightful
    "Also, what real use can you glean from a PC these days, without a network connection?"

    The laptops will have network capabilities. Didn't you read about them?

    Whether or not there's Internet for these children doesn't matter anyways - there's no Internet without computers, and they need the computers before they can have Internet. Maybe later someone can give them Internet.

    "So does anyone out there have a non-connected PC hooked up performing some life-changing work, or are they just useless when disconnected from the wwworld?"

    Does anyone out there have a connected PC hooked up performing some life-changing work, or are they just useless when connected to the wwworld?

    When's the last time most people have done anything life-changing with a PC, with or without the Internet? Sometimes the Internet is detrimental, too - a lot of people spend entirely too much time online, and setting down a small schoolchild and letting him use the Internet all day isn't so good.

    PCs don't need to be hooked to the Internet to be useful. There were useful programs and stuff before the Internet became mainstream.

    And at least when the kids do get the Internet, they'll already know how to use a computer.

  12. the old ways are sometimes the best by pilgrim23 · · Score: 2, Interesting

    In World War II in the War in the Pacific, American planes were outfitted with a special emergency device. This was a hand crank generator coupled to a Morse Code transmiter on a spindle much like a music box. As you turned the crank it would power the trasnmiter and the spindle would key the correct di di di dah dah dah di di dit (SOS) and some other information so a search plane or ships with direction finding equipment could find you.
    The slang name for this box was a "Gibson Girl".

    --
    - Minutus cantorum, minutus balorum, minutus carborata descendum pantorum.
    1. Re:the old ways are sometimes the best by vmcto · · Score: 2, Informative

      RAAF not US... It was a kite with the line being an aerial for the broadcast...

  13. Re:Do they really need a computer by Anonymous Coward · · Score: 2, Informative

    Why is it that people who troll this subject can't get it through their thick skulls that these laptops aren't intended for children who don't already have food, and water.
     
    There's one of you every damn time this subject comes up on /. Go read about the OLPC project and look at the list of countries they are going to provide computers for. Then read about those countries if you don't know what their economies/lifestyles are like.

  14. Re:Just out of curiosity by indifferent+children · · Score: 2, Funny
    did they even talk to any potential end users of this device?

    Yeah, they tried asking a user who had never seen a computer before to type up a set of requirements, and make some simple OS choices. Those ingrates were totally unhelpful.

    --
    Censorship is telling a man he can't have a steak just because a baby can't chew it. --Mark Twain
  15. No internet needed. What did YOU learn on? by doctorjay · · Score: 2, Insightful

    I agree its not the computers but whats on the computers that matter.

    My Apple ][ GS can still give some of those poor kids a hellva education with all the software i have for it. Thats what I learnt on ..fraction munchers.. number munchers.. puzzletanks.. math blaster.. logo.. that was the stuff. No internet there.

  16. Re:I'm not the troll you're looking for by grcumb · · Score: 2, Insightful
    "I'm not convinced that you can jump-start a country's development by skipping important steps like industrialization and infrastructure."

    I'll take you at your word that you're not trolling, and in fairness, your scepticism is phrased a lot more gently than many others'.

    I think your misunderstanding stems from the assumption that we'd be skipping an essential step, when in fact what's happening is that we're moving straight to a point that other (developed) nations had to reach in small increments.

    Wireless networks like the kind used in these laptops are infrastructure. They're also many times more cost-effective than laying cable into every home, and many times more versatile as well. True, they come with their own contraints and limitations (e.g. calling 911 from a tunnel) but most people in the developing world are happy to accept them. You see, there's simply no way that they could pay for the kind of infrastructure that exists in the US, for example.

    There are innumerable opportunities for people all over the world to work in service industries that require only a network-connected computer and a well-educated user. People living in many developing nations can leap straight to the head of this particular queue without having to spend a generation working in the sweatshops and mines as our grandparents and parents did. IMO, that's a Good Thing.

    In some ways, this actually plays to the advantage of the developing world. It means that they can immediately derive the benefits of technological change that, elsewhere in the world, was achieved in small increments, and which is restricted in important ways by what came before. A good analogue for this is England's experience in the later stages of the Industrial Revolution. England pioneered most of the technologies and processes, and had pride of place for some time. But by the time Germany, France and the US got moving, they were able to move straight to the state of the art, while England still had a huge investment in first generation systems that were not nearly as competitive.

    --
    Crumb's Corollary: Never bring a knife to a bun fight.
  17. Re:Free Energy? by LunaticTippy · · Score: 2, Informative
    The human body does better than 50% conversion efficiency, so 20 watt hours would cost about 30 kcalories. That's a pretty small amount, even on an extremely low-calorie diet. The kids might use less calories with the computer, since they might be running around playing otherwise.

    For those who thought about using this as a pleasant form of exercise, here is a handy guide: 8 hours of cranking at maximum speed will burn off a third of a dry bagel. Keep it up all day and night and you'll burn off an entire dry bagel. Let's just say this won't solve obesity problems quickly.

    --
    Man, you really need that seminar!