battery

How I Built My First Electric Bike

How I Built My First Electric Bike

By Parker Jardine

Parker Jardine

Manager of Systems Administration in the Information Technology Higher Education space. I enjoy biking, climbing, hockey, camping, mountaineering, hunting, paragliding, and just being outdoors. You can read my Make Magazine project articles about a diy solar panel and solar systems design in volumes 12 and 14.

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My goal was an easy-to-make, low cost electric bike that was both powerful and reliable. Here’s how I did it.

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The Simplest DC Motor in the World?

The Simplest DC Motor in the World?

By Michael Colombo

Michael Colombo

In addition to being an online editor for MAKE Magazine, Michael Colombo works in fabrication, electronics, sound design, music production and performance (Yes. All that.) In the past he has also been a childrens' educator and entertainer, and holds a Masters degree from NYU's Interactive Telecommunications Program.

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20

AA battery + coil of wire + neodymium magnets = DC Motor!

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Mass Generator Works as a Gravity Battery

Mass Generator Works as a Gravity Battery

By John Baichtal

John Baichtal

My interests include writing, electronics, RPGs, scifi, hackers & hackerspaces, 3D printing, building sets & toys. @johnbaichtal nerdage.net

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28

While not terribly practical for outputting large amounts of electricity, this “gravity battery” demonstrated by YouTube guru MrTeslonian shows a fun way of generating electricity. In his video he mentions a 25′ version with a pair of water-filled jugs, and when one jug hits the bottom, a pump is triggered that refills the empty jig […]

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Tropical Fruit-Powered Laser

Tropical Fruit-Powered Laser

By Michael Colombo

Michael Colombo

In addition to being an online editor for MAKE Magazine, Michael Colombo works in fabrication, electronics, sound design, music production and performance (Yes. All that.) In the past he has also been a childrens' educator and entertainer, and holds a Masters degree from NYU's Interactive Telecommunications Program.

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16

Over at the Maui Makers hackerspace, member Ryan K showed up with a mess of Lilikoi fruit (also known as passion fruit). Using anodized bolts (source of zinc), some thin copper pipe, wire, switches, LEDs, and a capacitor, he built himself a battery from the fruit.

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Weekend Projects Gets Extreme With LED Throwies!

Weekend Projects Gets Extreme With LED Throwies!

By Nick Normal

Nick Normal

I'm an artist & maker. A lifelong biblioholic, and advocate for all-things geekathon. Home is Long Island City, Queens, which I consider the greatest place on Earth. 5-year former Resident of Flux Factory, co-organizer for World Maker Faire (NYC), and blogger all over the net. Howdy!

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28

Fun, simple, glowing circuits that require mere seconds to assemble. Or take them to the next level, and encase them in an indestructible lantern, float them in a nearby pond, or fly them in the sky!

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