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The majority of Kenyans live off grid, meaning
they don’t have electricity to light their homes,
charge their cell phones or do any other number
of tasks many of us take for granted on a daily
basis. Solar power is a burgeoning source of
energy for the country, but buying an individual
solar power system can be pricey.
Sudha Kheterpal created the Spark (now raising
money on Kickstarter), a kinetic energy device, to
help give a cheap boost of electricity to those
who live without it. The idea is simple: Shake the
rock-shaped gadget like a maraca, and a
rechargeable battery will produce enough energy
to power a light—12 minutes of shaking gets you
one hour of light.
The concept had been brewing in Kheterpal’s
mind for years. For the past couple of decades
Kheterpal has been a professional percussionist
touring with the Spice Girls, Dido and Faithless.
Each night she exerted intense amounts of energy
that seemed to just float away with the crowds
after the show. “I’ve always wondered if all that
energy that I give out on stage as a performer
could be harnessed and used,” she says.
So Kheterpal began researching how she might be
able to take the concept of percussion and turn it
into a sustainable source of energy. She tapped
an engineer and designer to help develop the
technology and form of the product and came up
with a flint stone-shaped device that houses a
small energy-producing circuit. As a magnet
moves back and forth through the center of a
copper wire coil, a current is produced in the wire
loops and gives the rechargeable battery a boost.
Someone can shake the Spark in the morning and
use the power in the evening. Each battery can
hold up to 20 hours at a time.
“I’VE ALWAYS WONDERED IF ALL THAT ENERGY
THAT I GIVE OUT ON STAGE AS A PERFORMER
COULD BE HARNESSED AND USED,” SHE SAYS.
Getting an hour of light from 12 minutes of
shaking isn’t exactly efficient, but it’s just a start
says Kheterpal (the team is working to cut the
shake-to-energy ratio in half). The Spark is
certainly not a cure all, and Kheterpal doesn’t
expect an entire family to sustain on it. The
bigger goal she says, is to turn the Spark into an
educational tool and to distribute it to 75 percent
of Kenyan school children.
Part of the Kickstarter money will go towards
making educational kits that will teach students
how to build the Spark from its various
components. Kinetic energy is generally taught at
age 11 in Kenya; the Spark will give these kids a
direct application to scientific concepts, and a few
hours of charing a phone or light, too. “If every
school child has a shaker or kit they can put
together,” says Kheterpal. “The impact of that is
huge.”
http://www.wired.com/2014/07/a-maraca-that-could-power-lamps-for-people-without-light/
they don’t have electricity to light their homes,
charge their cell phones or do any other number
of tasks many of us take for granted on a daily
basis. Solar power is a burgeoning source of
energy for the country, but buying an individual
solar power system can be pricey.
Sudha Kheterpal created the Spark (now raising
money on Kickstarter), a kinetic energy device, to
help give a cheap boost of electricity to those
who live without it. The idea is simple: Shake the
rock-shaped gadget like a maraca, and a
rechargeable battery will produce enough energy
to power a light—12 minutes of shaking gets you
one hour of light.
The concept had been brewing in Kheterpal’s
mind for years. For the past couple of decades
Kheterpal has been a professional percussionist
touring with the Spice Girls, Dido and Faithless.
Each night she exerted intense amounts of energy
that seemed to just float away with the crowds
after the show. “I’ve always wondered if all that
energy that I give out on stage as a performer
could be harnessed and used,” she says.
So Kheterpal began researching how she might be
able to take the concept of percussion and turn it
into a sustainable source of energy. She tapped
an engineer and designer to help develop the
technology and form of the product and came up
with a flint stone-shaped device that houses a
small energy-producing circuit. As a magnet
moves back and forth through the center of a
copper wire coil, a current is produced in the wire
loops and gives the rechargeable battery a boost.
Someone can shake the Spark in the morning and
use the power in the evening. Each battery can
hold up to 20 hours at a time.
“I’VE ALWAYS WONDERED IF ALL THAT ENERGY
THAT I GIVE OUT ON STAGE AS A PERFORMER
COULD BE HARNESSED AND USED,” SHE SAYS.
Getting an hour of light from 12 minutes of
shaking isn’t exactly efficient, but it’s just a start
says Kheterpal (the team is working to cut the
shake-to-energy ratio in half). The Spark is
certainly not a cure all, and Kheterpal doesn’t
expect an entire family to sustain on it. The
bigger goal she says, is to turn the Spark into an
educational tool and to distribute it to 75 percent
of Kenyan school children.
Part of the Kickstarter money will go towards
making educational kits that will teach students
how to build the Spark from its various
components. Kinetic energy is generally taught at
age 11 in Kenya; the Spark will give these kids a
direct application to scientific concepts, and a few
hours of charing a phone or light, too. “If every
school child has a shaker or kit they can put
together,” says Kheterpal. “The impact of that is
huge.”
http://www.wired.com/2014/07/a-maraca-that-could-power-lamps-for-people-without-light/