Monday 20 May 2013

Lighting villages with the force of gravity

This is one of the best social invention for addressing the need for household lighting.  No need to get a electricity connection nor need for batteries for solar powered lantern.  There is no running cost, no maintenance as it is operated through the force of gravity.

Will your organisation be the first to develop this in India?

Please your view and comments.  The article is reproduced below:


A household lamp powered by a bag of rocks.

More than 780 million people rely on kerosene to light their homes. But the fuel is pricey and is toxic when burned—not to mention a fire hazard. In 2008, London-based product designer Martin Riddiford and his colleague Jim Reeves decided to create a cheap, safe alternative.
Riddiford knew a falling weight could produce enough energy to run a grandfather clock, so why not a light? To find out, he attached the crank of a wind-up flashlight to a bicycle wheel. He hung a weight from the wheel to cause it to spin; the wheel cranked the flashlight, and the device lit up.
Over the next four years, Riddiford, Reeves, and a small team spent their downtime between projects in a basement, refining the GravityLight. To use it, a person hangs the device and fills an attached fabric bag with up to 28 pounds of rocks, dirt, or other material. Lifting and releasing the bag steadily pulls a notched belt through GravityLight’s plastic hub; the belt spins a series of gears to drive a small motor, which continuously powers an LED for about 30 minutes.
The team used crowdfunding to manufacture 1,000 GravityLights, which it plans to send to developing countries for field testing—plus 6,000 more for backers. “It’s exciting to witness so much positive reaction to what we’re doing,” Riddiford says. Besides remote villages, the lamp could prove handy in campsites, closets, and any dark nook far from a socket, so Riddiford also hopes to license a retail version for less than $10.

GravityLight:  Graham Murdoch
HOW IT WORKS
1) As a weighted bag descends, it tugs a belt to turn a series of plastic gears.
2) The gears work in unison to spin an electric motor.
3) The motor powers a small yet bright LED, providing continuous illumination for about 30 minutes—the maximum amount of time that the bag can take to descend.
4) External connectors can power low-voltage devices, and the entire system is designed to work for thousands of lift-and-drop cycles.

Sunday 12 May 2013

500 community radio in 4 years - will yours be the first one



On 28 jan 13, I wrote about setting up community radio by business NGOs.  Community radio is one of the most appropriate opportunity of communicating with the neighbourhood community for extending information on health, sanitation, education, CSR programmes, government programmes etc. 

Now government is proposing to set up 500 community radios in the next 4 years.  It is a great opportunity not to be missed.

For further details, see my earlier blog.

Please give your views/ comments/ issues in setting up community radio.


Saturday 11 May 2013

Using Plastic water Bottle as Light Bulbs

The light is required even during the daylight in the closed spaces.  There is opportunity to use the waste plastic water bottles as light lamp in such places.  Will your company  be the first to start this revolution at places where such idea could be used.  Please share your success stories.

The details are copies from the world bank website and is produced below:


It’s surprising how simple the design of a solar bottle light is – take an empty plastic bottle, fill it with mineral water and a few drops of bleach, and cement it halfway through a small metal roof sheet (the kind used as roofs in Manila’s slum areas). Then cut out a small piece of the actual roof, place the sheet with the bottle on top of the hole, cement any cracks, and voilĂ ! Let there be light.
This initiative, a project designed and developed by students from the Massachusetts Institute of Technology (MIT) and implemented by MyShelter Foundation, is already transforming lives of low-income people in the Philippines.
Aside from giving light, it reduces the risk of fire-related incidents involving faulty electrical connections, which are rampant in informal settlements like slum areas. MyShelter Foundation’s vision through “Isang Litrong Liwanag” (A Liter of Light) project is to brighten one million homes in the Philippines by 2012 with the help of various partners and volunteers.
Here at the Development Marketplace, we love innovative technologies like this: transformative, affordable, eco-friendly, and scalable. Check out their video below:

    Tuesday 7 May 2013

    Innovative tools for improving education


    05 JULY 2013
    I was reading an interesting TED blog (copied below) about developing tools/ applications for improving education.  Are you aware of use of any innovative tool for improving education? Please share if you have made or used an innovative application or tool to improve the classroom experience.
    Dinesh AGrawal

    7 tech tools now available in the classroom, for better or worse
    Posted by: Jessica Gross 
    May 6, 2013 at 4:20 pm EDT
    The analog-to-digital shift that has seen e-readers booting out books, smartphones trumping landlines and tablets making desktops look fuddy-duddy is also bringing new tech tools to the classroom. Last month, I read this New York Times article about CourseSmart, an app that allows teachers to track whether students have done their reading in digital textbooks, with interest. In the article, the dean of Texas A&M’s business school, which is testing out the technology, admitted it was “Big Brother, sort of, but with a good intent.” And while it did seem to undermine one of the main points of college — that reading and studying are self-motivated — it also seemed like a good way for students to be able to demonstrate to professors that, yes, they are paying attention, and for professors to get real data as to what material just isn’t clicking for their students.
    The tech solutions available to teachers now go far beyond the overhead projector. Below, a look at some tools in this burgeoning category.
    1.     BetterLesson
    The Boston-based startup
     BetterLesson, founded in 2008, is a social media platform that educators can use to organize and share their curricula. Last year, the Bill and Melinda Gates Foundation awarded BetterLesson $3.5 million. “Considering the startup allows teachers to browse a serious repository of documents, presentations, lessons and even complete units and courses, all through a simple search interface, and upload their own lessons onto a dashboard, you can see why teachers will love this kind of resource,” TechCrunch wrote in 2011. “Add the ability to share curricula directly with international educators and receive feedback, and you’ve got yourself a goddamn deal, as Dave Chappelle would say.”
    .
    2.     ClassDojo
    Launched in August 2011,
     ClassDojo helps teachers with what many call their hardest task: classroom management. The platform, which teachers can use on a smartphone, laptop or tablet, allows them to give students points (or take them away) “in real-time, with just one click,” as the website has it. Students are notified (“Well done Josh! +1 for teamwork!”), and teachers can use the platform to generate analytics and reports to share with parents and administrators.
    .
    3.     PowerSchool
    PowerSchool allows teachers to track attendance, grades, and a lot more for students and parents to view at home. According to Pearson, which sells the system, PowerSchool supports 10 million students in over 65 countries.
    .
    4.     SMART Board
    An “interactive whiteboard,”
     SMART Board allows teachers to write class notes digitally, so they can be saved for students to access later. (Feel like building your own whiteboard? At TED in 2008, Johnny Lee showed how you can hack a Wii Remote to build a simple interactive whiteboard.)
    .
    5.     Remind101
    Started by a team of two brothers,
     Remind101 enables students and parents to sign up to receive teachers’ text-message reminders about assignments. It’s private—these are mass texts, and teachers can’t see students’ phone numbers. It’s also one-way, meaning that teachers can send out texts, but students can’t respond to them.
    .
    6.     Educreations
    Using
     Educreations, teachers can produce video lessons using a “recordable interactive whiteboard” via an iPad app or the website. There’s a public directory of lessons, available for browsing by students or other teachers (or you).