Blocklets’ Arduino-powered trebuchet could be your cat’s worst nightmare (video)

We don’t do a whole lot of reporting on ancient weaponry here, because, well, it’s a little dated — but throw in an Arduino and a servo, and you’ve got our attention. Take, for example, this miniaturized trebuchet. Constructed from a series of click-in-place pieces known as Blocklets, the little launcher is basically a standalone slingshot. With the addition of the aforementioned components, however, it becomes a motorized annoyance for anyone and anything that stands in its way. The folks behind the tiny trebuchet tested its capabilities against a sculpture similarly built from Blocklets, but we prefer the challenge of a moving target. Unfortunately, we’ll have to wait to get all medieval with this thing, as Blockets haven’t quite made it out of the funding stage yet.

Blocklets’ Arduino-powered trebuchet could be your cat’s worst nightmare (video) originally appeared on Engadget on Thu, 05 May 2011 08:14:00 EDT. Please see our terms for use of feeds.

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POLYRO humanoid robot can be built by you, looks more like K-9 than C-3PO


It may bear closer resemblance to an upright dog than a human (check out those ears!), but POLYRO here is the least frightening example of a do-it-yourself robot that we’ve seen to date. We’re not sold on the humanoid’s name as an acronym (oPen sOurce friendLY RObot), and the instructions and assembly photos are rather hit or miss, but this rollin’ rover definitely scores some points for looks. Prepare to get down and dirty with a jigsaw, drill press, and “safety equipment,” before the latest addition to your family is ready to roll across the living room floor on its iRobot base. Instructables has posted a full shopping list, including a 10.1-inch netbook, ROS (Robot OS), and a Kinect. If you’re feeling brave, clear some time in the schedule and space in the garage after heading over to our source link.

POLYRO humanoid robot can be built by you, looks more like K-9 than C-3PO originally appeared on Engadget on Wed, 04 May 2011 20:24:00 EDT. Please see our terms for use of feeds.

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World’s smallest Donkey Kong cabinet delivers authentic arcade experience for tiny fingers (video)

Tiny Donkey Kong Cab

This, friends, is a work of art. Above is a stunning, fully-functional recreation of the original Donkey Kong arcade cabinet — and it’s only 8.25 inches tall. The accomplished modder Bender posted his handiwork on the Build Your Own Arcade Controls Forum and it’s sure to wow even the most cynical of folks. At the heart of this build is a hacked up GamePark GP2X Wiz running MAME, but it’s the attention to detail, including the printed vinyl decals and light-up marquee, that really pull this (supposedly world’s smallest) 1/8 scale project together. Check out the gallery below and the pair of lengthy demo videos after the break. En garde Mr. Heck!

[Thanks, Brian]

Continue reading World’s smallest Donkey Kong cabinet delivers authentic arcade experience for tiny fingers (video)

World’s smallest Donkey Kong cabinet delivers authentic arcade experience for tiny fingers (video) originally appeared on Engadget on Wed, 04 May 2011 15:37:00 EDT. Please see our terms for use of feeds.

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Augmented reality Tetris game uses Kinect hack, Wiimote, smooth jazz (video)

What does it take for a gaming classic to survive in a world ruled by titles like Portal 2 and Homefront? A Kinect hack, a Wiimote, and some electronic elbow grease, apparently. Trinity College student Keysosaurus — as he’s know to his YouTube pals — has used a bit of C#, XNA, and OpenNI coding to play 3D augmented reality Tetris using Kinect body controls and a Wiimote. The Kinect gestures do most of the work, rotating the board, zooming the camera in and out, and moving the pieces into place, while the Nintendo controller is used to rotate. Video’s after the break, but beware, the familiar strains of “Korobeiniki” have been replaced by smooth guitar jazz, so turn the volume up at your own risk.

Continue reading Augmented reality Tetris game uses Kinect hack, Wiimote, smooth jazz (video)

Augmented reality Tetris game uses Kinect hack, Wiimote, smooth jazz (video) originally appeared on Engadget on Thu, 21 Apr 2011 10:07:00 EDT. Please see our terms for use of feeds.

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Laser tripwire does Hollywood-style security on the cheap, precious jewels not included

Sure, you could opt for a laser tripwire that puts intruders on blast via Twitter, but there’s something to be said for the simplicity of the latest security system to come from Instructables user EngineeringShock. You’ve seen this setup before: a group of mirrors are strategically positioned to bounce a laser beam across an open space, ensuring that even the most nimble of invaders — excepting MacGyver, perhaps — will set sirens blaring. Consisting of a programmable keypad, a laser and detector, a series of six carefully aligned mirrors, and an LED-equipped siren, the system does Hollywood-style security on a budget — the siren being the most expensive element at $20. If you’re looking to lock your stuff down like they do in the movies, follow the source link for full instructions, or check out the video demo after the break.

Continue reading Laser tripwire does Hollywood-style security on the cheap, precious jewels not included

Laser tripwire does Hollywood-style security on the cheap, precious jewels not included originally appeared on Engadget on Wed, 20 Apr 2011 11:27:00 EDT. Please see our terms for use of feeds.

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Arduino geiger counter brings open source radiation detection to the geeky masses (video)

Need to detect radiation? We sure hope not — but if you’re looking for a straight-forward, altogether geeky geiger counter, the Libelium gang has your back. En route to the Tokyo Hackerspace as we speak (and believe us, they need it), the Radiation Sensor Board for Arduino is a low-cost alternative to existing devices. It’s available now either with a compatible geiger tube for €95 ($135) or without for €65 ($50). Hit up the source link to get started, but not before peeping the thing in action after the break. Is there anything you can’t do with Arduino?

Continue reading Arduino geiger counter brings open source radiation detection to the geeky masses (video)

Arduino geiger counter brings open source radiation detection to the geeky masses (video) originally appeared on Engadget on Mon, 18 Apr 2011 18:51:00 EDT. Please see our terms for use of feeds.

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Game Boy Gutted, Turned into a Nintendo 3DS Case

GameBoy 3DS Case

If you don’t remember quite how large the original Game Boy really was, this DIY hack will remind you. One proud 3DS owner looking for an unassuming but still geeky case for his shiny new handheld console decided that his old original Nintendo Game Boy would make a perfect carrying case. 
The modder, named “Goteking,” gutted the original Game Boy of all of its components, but kept the shell, the buttons, and the screen intact. He printed some paper cut-outs of the start screens of his favorite games, and affixed them where the Game Boy’s LCD screen used to be. Next, he attached a hinge to the left side of the Game Boy and a clasp to the right side. 
With a little sanding down, it just happens that the interior of a Game Boy – with everything else removed – is just the right size to slip a 3DS inside. He repeated the process with a newer Game Boy model with a translucent plastic body, and got the same results. Once the 3DS is inside, you can’t even tell it’s in there: it just looks like an ordinary Game Boy. 
You can see a video of the case behind the jump.

RC car runs on soda can rings, Doc Brown approves (video)

Many a future engineer was inspired by Back to the Future‘s Dr. Emmett “Doc” Brown, and not just because he proved that unkempt eccentrics could truly change the world. No, he also pioneered Mr. Fusion, the coffee maker/cold fusion reactor that turned garbage into energy. And while we’re still waiting for cold fusion and time travel to become a reality, today we’re all one step closer to waste-powered cars. A pair of Spanish engineers have recently unveiled the dAlH2Orean (see what they did there?), a R/C car that runs on aluminum. Dropping a few soda can tabs into a tank of sodium hydroxide produces enough hydrogen to power the little speedster for 40 minutes – at almost 20mph. Hit the video above to see it in action, along with your daily helping of the Chemical Brothers. Fitting.

RC car runs on soda can rings, Doc Brown approves (video) originally appeared on Engadget on Sun, 17 Apr 2011 13:29:00 EDT. Please see our terms for use of feeds.

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MTbiggie is a DIY Surface for the masses (video)

MTbiggie

Practical or not, there is no denying the nerd-gasm inducing wow factor of Microsoft’s Surface. Of course, Surface is expensive — like, unless you’re a millionaire you’re probably not buying one for personal use expensive. There are some DIY solutions out there, but designer and developer Seth Sandler has come up with the cheapest and easiest yet. Built from about $400 worth of material (some of which you probably have lying about your home / apartment / dungeon), the MTbiggie brings big-screen multitouch to the masses. Like the hacker’s previous homebrew multitouch device, the MTmini, there’s nothing particularly difficult to find here. All you need is a couple of chairs, a mirror, a projector, an infrared webcam (which you can easily hack together with some old film negatives and cardboard), a big sheet of paper and an equally large piece of clear acrylic. Just set it all up according to the instructions in the video below and in no time you be finger painting and playing Angry Birds on a screen that dwarfs your iPad — and possibly your kitchen table, too.

Continue reading MTbiggie is a DIY Surface for the masses (video)

MTbiggie is a DIY Surface for the masses (video) originally appeared on Engadget on Mon, 11 Apr 2011 20:25:00 EDT. Please see our terms for use of feeds.

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The World’s Largest Lego Tower, Built by Brazilian Children

Lego Tower

Lego fans will love this: a total of 6000 Brazilians, mostly children, got together for four days to assemble what’s clearly the world’s largest Lego tower, topping off at 102 feet and 3 inches. The effort required over a half-million Lego bricks and looks amazing: the children even managed to emblazon the Brazilian flag in the side using different colored bricks. 
The tower breaks the previous world record, just over 101 feet, set in Chile at a similar event held last year. The whole structure is supported by a set of wires draped down the sides to keep the whole thing from toppling over in high wind, and is just the latest entry since the original 43-foot tower build in London that earned the first record. 
Check out a video of the tower behind the jump.