DIY Group Sends $25 Balloon to 70,000 Feet

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DIY projects are all about sweat, tears and learning from mistakes. Just ask a group of electronics hobbyists that recently launched a $25 balloon bought off eBay with a payload carrying an Android G1 phone, two cameras and other assorted electronics up to nearly 70,000 feet in the air.

“Fundamentally, we are all space enthusiasts,” says Mikolaj Habryn, one of the participants.”We wanted to see if you can get a balloon up to high altitudes that can be ultimately used for ideas such as mounting a telescope or measuring radiation levels.”

The team successfully launched the balloon and gathered some great photographs but also made some fatal mistakes in their planning.

The entire project conceived and launched in just about a week comes from members of Noisebridge, a collectively operated hacker space in San Francisco.

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In just a week, the group bought the equipment and built a balloon. The balloon itself is a military surplus weather balloon that weighs about 5 pounds and when inflated can lift 15 pounds to 20 pounds.

For the payload, the team put two cameras that were tweaked for time-lapse photography. The cameras were programmed to take snapshots every 30 seconds.

“Because we were worried about temperature problems, we put it inside an insulated cooler,” says Habryn.

They also included a ham radio with a position beacon and a GPS that that could work at high altitudes.

With some help from his colleagues at Google, Habryn programmed the T-Mobile phone to send its GPS co-ordinates through text messaging whenever in range of a cellular network.

“We had some custom software that would also record all the data from the phone’s sensors … such as the accelerometers and GPS and save it to the phone’s internal memory,” says Habryn.


Robotic Spider Melds Legos and 3-D Printing

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Lego’s programmable robotics set Mindstorms is a fun toy for computing enthusiasts but if you really want to take it to the next level, check out Mark Weller’s project.

Weller, a machinist and technician at the McCoy School of Engineering at Midwestern State University, combined milled plastic pieces with the basic Lego Mindstorms set to create a robotic spider that can crawl and turn.

“I wanted to open students’ minds to go beyond ‘let’s put the parts together and program the robot,’” he says. “This project is more than sticking the wheels on a Lego set.” The school uses Lego Mindstorms to introduce freshman students to robotics.

The spider robot’s legs are based on a concept called the Klann linkage. A single leg has a six-bar linkage with a frame, crank, two rockers and two couplers connected with pivot joints. This transforms rotating motion into linear motion.

Weller says he created the spider’s legs from 3/8-inch plastic sheet stock on a 3-axis CNC mill. But it can also be made by a 3-D printer such as Makerbot and RepRap.

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As the video shows, the robotic spider moves with grace and turns around with flair, even on a smooth surface.  Weller has posted the details of his Lego spider project and says he hopes 3-D printing enthusiasts will try it out.

Photos: Mark Weller

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Hack Brings Multitouch to Nexus One Browser

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Google’s Nexus One phone has gained kudos for its vivid OLED screen and slim design. But the lack of multitouch support for its gorgeous display has left some users frustrated.

Now there’s a hack for it. A developer has modified the Android 2.1 operating system running on the Nexus One to enable multitouch for the device. Though it enables the feature for the Nexus One browser, for now, it is likely to soon become a part of other applications, such as maps.

Earlier this month, Google launched Nexus One as the first smartphone that would be sold by the search company itself, rather than a manufacturing or carrier partner. The Nexus One is designed by HTC and is currently available on T-Mobile’s network for $180 with a two-year contract with T-Mobile. An unsubsidized version of the phone costs $530.

But the lack of multitouch on the Nexus One has left many users puzzled. Nexus One has a touchscreen but users can only tap on it with one finger. So none of the two-finger pinch-and-zoom gestures that are popular among iPhone users are available. Google has said it will consider adding the feature in future updates.

The Android community, though, isn’t holding its breath. Steve Kondik, a developer who goes under the nickname Cyanogen, has offered a few files and instructions on code to add multitouch to the device.

“You will initially lose your bookmarks and browser settings by doing this,” he warns.  Hacking the phone could also void its warranty.

But as this video shows, getting multitouch in the Nexus One browser could just be worth it.

Photo: pittaya/Flickr

[via PC World]

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HP Plans Line of (Relatively) Affordable 3-D Printers

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Printers equipped for 3-D are poised to go mainstream, now that Hewlett-Packard plans to start selling them. The company’s inkjet and laser printers are staples in offices and homes.

The devices, which can crank out three-dimensional plastic models through a process similar to printing text on sheets of paper, have until recently been available only to high-end industrial designers. HP’s devices will be targeted at a broader market of mechanical-design professionals, and will probably cost less than $15,000.

“This is the boldest step we have seen so far in 3-D printing,” says Scott Summit, chief technology officer for Bespoke Innovations, a company that creates 3-D artifacts for medical use. “A lot of people want to do 3-D printing but it is a mysterious world. With HP embracing it, it is likely to demystify the idea to many consumers.”

HP’s printers will be manufactured by Stratasys, a company that specializes in 3-D printers.

The printers have long been used by designers and architects in computer aided design (CAD) to create prototypes before finalizing on the design for large-scale production. But these printers cost many thousands of dollars and have been popular with only a select group of specialists.

Over the last three years, hobbyists have found a way to make inexpensive 3-D printers, bringing the technology to do-it-yourselfers. The Makerbot, a 3-D printer that started shipping last April, costs $750 for a basic kit that includes, among other things, three NEMA 17 motors to drive the machine; nuts, bolts, bearings, belts and pulleys to assemble it; an electronics motherboard; and a pinch-wheel extruder to shape objects. A premium version of the Makerbot printer costs $950.

The HP-Stratasys line of printers are likely to be much more expensive than the Makerbot, since they are targeted at users in automotive and aerospace industries. HP and Stratasys declined to mention pricing for the upcoming line of 3-D printers. But last year, Stratasys offered an office-friendly 3-D desktop printer for around $15,000.

“There are millions of 3-D designers using 2-D printers,” says Santiago Morera, vice president and general manager of HP’s large format printing business, in a statement. “Stratasys’ technology is the ideal platform for HP to enter the market and begin to capitalize on this untapped opportunity.”

HP’s line of 3-D printers could straddle the world between hobbyists and small design businesses such as Summit’s that are looking to create individualized objects for consumers.

For instance, Summit’s firm has created  a backpack for firefighters that is molded individually to each user’s body. The backpack also doubles as a suit of armor, he says.

Another application for 3-D printers could be prosthetic limbs, because they could be customized for every individual.

Summit says, “3-D printers were not used in the production stage. But it is no longer just a prototyping tool, it’s become a manufacturing tool.”

The availability of inexpensive computer aided design (CAD) programs has helped make 3-D printers accessible to more users, says Summit.

“Five years ago you had to pay quite a bit of money to get a program that would let you export your design file in the STL format that can be sent to the 3-D printer,” he says. “Designers had to know Solidworks or Maya. But now you have Blender and Sketchup and other inexpensive 3-D-design programs.”

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Photo: 3-D printer (metacheetr/Flickr)


DIY Lens Cap Saver Is Ingeniously Inventive

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If you take photos with anything other than a little point and shoot, you will have, once in your life, lost a lens cap. Shortly afterwards, you would have found out that a simple plastic disk can be sold for almost $20 (or even $40).

This stung, you will be particularly pleased with this little hack from Benny Johansson. It’s a lens cap saver, and unlike the annoying commercial products which dangle the cap from a cord stuck to the camera body, this one is elegant, functional and free.

The holder consists of two parts. First, you cut a hook from an old shampoo bottle and slide it onto the camera’s neck-strap. Next, you drill a couple holes in the edge of the cap itself and thread through a short elastic cord. Now, when you take off the cap you can hang it by this little elastic loop. Benny has thoughtfully provided a PDF template so you can cut the hook to make a snug enough fit.

A further improvement can be made if you only ever use one lens, or have a fixed lens on the camera. You still hang the cap from the plastic hook, but the cord can be permanently attached twixt cap and camera as an extra safety measure.

We prefer the version without the “cute” animal faces, and as soon as I get home from the Wired office, where they won’t let me near the scissors, I shall be making a couple.

SkottiRotta Lens cap holder [Benvelo via DIY Photography]


NAMM: A Mad Professor of the Stompbox Goes Open Source

ANAHEIM, California — The Willy Wonka of guitar pedal builders is giving away the keys to his kingdom.

Zachary Vex, the mastermind behind the handcrafted and hand-painted Z.Vex line of boutique guitar effect pedals, has decided to release his designs to the public. His newest device, a new pedal called the Inventobox, allows anyone to hack his creations however they choose.

Z.Vex pedals are coveted by collectors for their mystique and funky vibe and as much as their squealing, crunchy and sometimes alien-sounding tones. They run the gamut from fuzz and distortion to wah-wahs and ring modulators. The pedals, with their sparkling, brightly painted cases and bizarre names, are considered high-end curios — they cost between $250 and $500 each.

Even though Vex’s pedal designs win accolades from guitar gods like Dinosaur Jr’s J Mascis and My Bloody Valentine’s Kevin Shields, some customers aren’t totally satisfied with what they get.

“Some people who buy the Fuzz Factory find it too bright,” Vex says, referring to his most popular model, a fuzz pedal for the guitar. “So, I wanted to give them an opportunity to open it up and do whatever they want to it.”

Vex is debuting the hacker-friendly Inventobox here at the National Association of Music Merchants (NAMM) show, the industry’s premiere tradeshow where all the latest gear is trotted out.

The Inventobox will be out in April. It’s basically a DIY hacking kit that lets intrepid Z.Vex fans mess around with his designs, altering the circuits and creating their own variations on his pedals. $400 gets you the Inventobox kit that contains a pedal with a blank circuit board, a set of modules that reproduce three signature Z.Vex sounds — the Fuzz Factory, the Super Hard-On and his Marshall-style tone stack — plus all the wires, tools and spare parts needed to put them together. There’s also a $300 version that comes without the modules so users can build their own circuits.

Pedal enthusiasts are known tinkerers. They gather online at sites like DIYStompboxes and Build Your Own Clone to trade schematics and debate over the finer points of stompbox design.

You can buy a DIY pedal kit for around $80, so at $300, the Z.Vex Inventobox may seem a little rich. But you get a full 16 knobs to twiddle, plus a peek inside the mind of one of the acknowledged masters of high-end stopboxes.

Vex envisions hackers will use the Inventobox, which ships in April, both for tweaking his designs and for developing their own pedals. The modules can be chained together, so people can layer multiple tone circuits on top of one another inside a single pedal.

The Inventobox itself is modular. Multiple units of the 16-knob boxes can be strung together to create pedals with 32, 48 or 64 knobs — or even more.

It also has a built-in work light and a set of braces that prop up the circuit board so you can move the wires around and still be able to switch the pedal on and off.

At some point, Vex’s explanation of everything the Inventobox is capable of went over our heads like a post-graduate Calculus lecture. Rest assured, though, it’s a pedal hacker’s dream come true.

Vex says he intends to eventually publish each of his designs for free on the internet, giving away the schematics and the instructions on how to assemble the circuits for every last one of his signature pedals. He is also creating an iPhone app that will let you purchase new pedal modules as they become available and view the published schematics.

“I’m going to be giving away all my secrets,” he says. “People are already hacking my pedals anyway, posting my designs on the various forums. So, I don’t care what they do to them.”

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Magnetic Cup-Holder Turns The Street Into a Diner

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Alexandra Pulver has a mission: to turn the streets into a dining room, an impromptu spot for a quick lunch which has many of the conveniences of a real eating place. Exhibit-A, the magnetic cup holder.

Alexandra’s blog, Pop Up Lunch, features bento-boxes that fold out into lap-trays and gadgets to transform fire-hydrants into tables. But it’s the magnetic coffee holder that we like the most, comprising a simple felt sleeve loaded with strong, rare-earth magnets. The sleeve can thus clamp to any nearby ferrous surface and the cup can be kept safe while you munch on your bagel.

Leaving aside the problems with a society that treats eating an inconvenient fuel stop, something to be done on the run instead of having fast, no-nonsense service in cheap an ubiquitous bars, this is a rather neat hack, wonderfully simple and yet arguably more spill proof than a diner table.

It’s also practically free, and easy to make yourself. Although if you have the time and energy to remember to carry one of these with you, that time might be better spent sipping a small, flavorful espresso in a cafe rather than mindlessly slurping down a quart of tasteless brown water.

Coffee Cup Holder [Pop Up Lunch via Lifehacker]


It Had to Happen: Bike-Polo Mallet Shafts Openly On Sale

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We’ve remarked before that once a perfectly good home-made solution becomes popular, somebody, somewhere, will turn a buck by hawking a ready-made version. Exhibit A: Bike-polo mallets. Mine is made from a ski-pole, a piece of gas pipe found in the street and cut to size, and an old inner-tube wrapped around the handle to make a grip. But now, you can buy a ready-made bike-polo shaft for $15.

I have wondered for a while how long it would be before somebody would sell a commercial bike-polo mallet. One of the best parts of the game is that it is almost free to play. The goals are made from traffic cones, the mallets from found parts and the bikes are.. well, you have a bike, right?

To be fair to Milwaukee Bicycle Company, the purveyor of these sticks, the aim is to provide ski-poles to those who live far from the slopes. The poles are also tougher than the average aluminum stick. This is the description:

Made from 7075 T6 Series 4 Aluminum, these poles are constructed with the strongest commercially available, aircraft-grade aluminum alloy and are twice as strong as the industry standard, rated to 75,000 PSI.

The poles are a generous 49-inches long, weigh 195grams (7 ounces) and are powder coated in a rather fetching orange. Better still, the $15 price tag means it costs about the same as one half of a pair of ski-poles (mine cost €20, or around $28, for the pair). Finally, you still have to make your own mallet, which means that this component is no worse than buying gas-pipe from the hardware store instead of scavenging it from the streets.

Could it be that the purpose made solution is in this case better and more friendly to the environment? After all, there is no plastic grip, plastic circle or strap to cut off and discard.

Milwaukee Bicycle Co. – Bike Polo Shafts [Benscycle via Urban Velo]


Hack Lets You Use a Bluetooth Keyboard With Your iPhone

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Now you can use your iPhone 3G, 3GS or second-gen iPod Touch with an external Bluetooth keyboard. The catch is that your iPhone will first have to be jailbroken, or hacked to allow it to run unofficial third party software.

The driver will be available “soon” in the Cydia store (the jailbreak App Store) and will allow you to pair and use an external Bluetooth keyboard with the phone, making it a very viable all-day computer. As long as you’re not writing huge articles, we guess.

The first iteration won’t let you use the keyboard just in any old application, though: You need to use it within the iPhone Bluetooth Keyboard Driver application itself. Luckily, there is a workaround: If you install another package, called Simulated Key Events, it should route the key-presses to any application you like.

We’ll keep a close eye on this and try it out upon release. Really, though, this is something Apple should build in. Sadly, it probably never will, due to the company’s infamously button-phobic boss.

iPhone Bluetooth Keyboard Driver [Keyboard Ringwald]


Enable Web Browsing and Full Catalog Access on International Kindle

Ever since Amazon’s Kindle 2 arrived in Gadget Lab’s Spanish Bureau (aka my apartment), I have been trying to restore its lost functionality. Finally, with some rather annoying account jiggery-pokery, I have enabled full (and free) web access and I can now buy any book I like from the Kindle Store.

To recap, the Kindle International edition shipped in a somewhat crippled state, with access to a (rather small) subset of the Kindle Store’s contents, and with 3G web browsing limited to the Kindle Store itself and to Wikipedia (and worse, the U.S. Wikipedia). Also, there are no for-pay blogs, and no pictures in newspapers. To be fair to Amazon, these problems are caused by international publishing rights and by the wireless carrier AT&T, but it is still a pain.

Regular readers will know we have managed to work around much of this, but last night I managed to turn all these features back on. It’s not pretty, and it has some fiscal penalties, but it works.

The hack is easy, and has been used by those outside the United States to buy Kindle content ever since the U.S.-only v1.0: Amazon ties your Kindle to your billing address, so all you need is a billing address in the U.S. and suddenly everything is switched on. First, set up a new account with a U.S. address (we’re not suggesting you fake an address here, so use a friend’s address or something similar). “But,” you say, “I have no U.S. credit card. How do I pay?” This is the delicious workaround: You use your regular account in your own country to buy gift cards and apply them to the U.S. account. This will let you shop as normal for books. For this reason its a good idea to open up a second browser so you can stay logged in to both accounts simultaneously.

Once you have the new account, you’ll need to switch your Kindle over to point to it. This can be done in two ways, either by putting the Kindle’s serial number into the Kindle management page on the web, or just by logging out of you old account and into the new from the Kindle itself (from the Home page, hit Menu and choose Settings).

I was a little worried that my previously purchased content would disappear, but no, it all remains. Amazingly, this is also true of the iPhone Kindle app. De-and-re-register the iPhone to your new account and it will happily mix books bought on both. Whispersync, though, only works with the currently registered Kindle account.

Web browsing also works, and according the letter that Amazon will send to your Kindle when you try this hack, it is free, as is browsing the Kindle store. But it isn’t all so smooth: You now count as a U.S. customer who is roaming abroad. This incurs a $5 per-week fee to have newspapers and magazines delivered, and a $2 fee for book and single-title periodical downloads. The data fees for sending your own content also rise to $1 per megabyte.

Or do they? I applied a $10 voucher to my new account and was able to buy a $9.99 book. Clearly here, then, the $2 fee wasn’t applied, and as I have no credit card associated with the account, it cannot be charged. Even if it was, books typically cost a few bucks more for us foreigners anyway, so it would work out the same.

Could Amazon switch off this loophole? We guess your account could be closed, and the “experimental” web access could certainly be disabled (a shame, as I can now read Gadget Lab wherever I happen to be). On the other hand, anyone trying out this hack is clearly doing it in order to give Amazon more money. We hope that this might cause the company to turn a blind eye.

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Photo: Charlie Sorrel