How To Build a Taser

Do you want to learn how to send a fun 330 volts of electricity into the back of your friend’s neck? Do you not want to have to deal with the awkwardness of ordering a professional taser for home use? Then this guide on how to create a homemade taser is for you.

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How To Build a Taser

Grace One electric bicycle is ready for purchase, our bank accounts are still preparing (video)

Your average electric bicycle has a basket on the front and a lot of shame in the rear. Not the Grace One. When we first saw it almost two years ago, in the fall of 2009, it looked… well it looked like a pretty kickass bike. Since then the design has been thoroughly refined, the frame redesigned, but still the stacked projector headlamps remain in their aluminum housing in front of the bars. They're a hint at the high-tech nature of this bike, which features integrated Li-ion batteries that charge in about an hour and spin a hub-mounted motor in the rear wheel, giving you a top speed of 30MPH and a range of up to 31 miles — all for a mere €4,199 ($6,000). If your finances can manage it the bike is available now, but if they can't you'll have to make do with a celebratory video of the thing in action after the break. Word of advice: get those glow sticks cracked and shaken up before you hit play.

Continue reading Grace One electric bicycle is ready for purchase, our bank accounts are still preparing (video)

Grace One electric bicycle is ready for purchase, our bank accounts are still preparing (video) originally appeared on Engadget on Thu, 19 May 2011 13:01:00 EDT. Please see our terms for use of feeds.

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Concrete Canvas: The Pop-up Tent That Turns Into A Concrete Structure With Just Water


Concrete Canvas is just what it sounds like: canvas that’s, well, concrete. The material is essentially a water-activated concrete fabric that can be deployed for just about any task generally reserved for traditional concrete. Just add water, really. The novel part is that the company sells a self-contained pop-up tent that, with the help of a provided electric fan, deploys and becomes permanent relatively quick. All that’s need is to soak the tent and wait. It takes about 24 hours for the tent to harden, transforming into a permanent structure that can be sterilized and wired for electricity.

The BCC just posted a video interview with the founders who explain how the material came to be and the company’s plans, but if nothing else, click through just to see this stuff in action. I want one for my backyard shed. Put together a standard Home Depot barn is for jerks.

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Concrete Canvas: The Pop-up Tent That Turns Into A Concrete Structure With Just Water

Amazon adds electronics to trade-in program, pawns 2,550 gadgets and counting

If you’ve got some spare gadgets and need to make a quick buck gift card, there are any number of ways — Walmart, Target, Best Buy and even eBay will instantly quote you a dollar figure these days. Now, Amazon is joining their ranks as the latest firm eager to stockpile still-somewhat-valuable tech, by adding electronics as the latest category for trade-ins. Pick from the 2,550 items currently recognized and describe the condition your camera / GPS / calculator is in, and Amazon will let you know how many dollars worth of credit it can give you alongside a prepaid shipping label. We can’t tell if Amazon will give you better deals than the competition, but this beautiful brown Zune did fairly well. Never you mind that it typically sells for upwards of $40 at auction — Amazon has mouths to feed, you know?

Continue reading Amazon adds electronics to trade-in program, pawns 2,550 gadgets and counting

Amazon adds electronics to trade-in program, pawns 2,550 gadgets and counting originally appeared on Engadget on Thu, 19 May 2011 06:14:00 EDT. Please see our terms for use of feeds.

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Kindle books officially take over print sales at Amazon, pulp starts making retirement plans

Kindle books officially take over print sales at Amazon, pulp starts making retirement plansThe Kindle has been a huge success, no doubt about that, but we are continually amazed at just how big a success it has become. Amazon too, apparently. The company just issued a press release to announce that digital book sales have now exceeded sales of all print titles, both hardcover and paperback combined. As of April 1st, for every 100 print books that Amazon has sold (of any kind) the company moved 105 Kindle books, and no that doesn’t include downloads of free titles. Also of note: the ad-supported reader that’s shipping for $114 is now selling more quickly than the normal, $139 version. Proof, then, that people will put up with more ads in more places for 25 bucks.

Continue reading Kindle books officially take over print sales at Amazon, pulp starts making retirement plans

Kindle books officially take over print sales at Amazon, pulp starts making retirement plans originally appeared on Engadget on Thu, 19 May 2011 10:01:00 EDT. Please see our terms for use of feeds.

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