Low-Tech Geekery Makes Beautiful High-Speed Photography

Vincent Riemersma’s beautiful time-freezing photographs are a mixture of skill and old fashioned geekery. The pictures show splashes of colored water frozen in time as they jump simultaneously from a row of wine glasses. The results are clearly impressive. But how were the photos taken?

First, the splashes. To ensure repeatability, time after time, Vincent built a simple rig. Two inline skate-frames and a piece of wood made a rolling trolley which was mounted on a slope. A marker at the top meant the start-point was consistent, and a plank of wood at the bottom stopped the trolley suddenly. Momentum takes care of the rest, flinging the colored water into the air. Capturing these repeatable spills was the tricky part.

Timing is everything. To capture the splashes, you need to have perfect timing. Vincent decided to let a computer take care of this, and used an Arduino to fire a flash gun. The trigger was a piezo-element which would detect the noise of the crash and fire the strobe. Into the Arduino Vincent programmed several delays. The first was to give the water enough time to jump from the glass (around 100ms). The flash would then fire, and be cut immediately. A final delay, of 4,000ms, is there to make sure nothing tricks the circuit into firing again.

What about the camera? Well, that’s the easiest part. The tripod-mounted Nikon D300s was manually focussed and had its shutter speed set to three seconds. Turn out the room lights and trip the shutter, and the sensor waits patiently for some light. Roll the skateboard and wait. The water spills, the flash flashes, the sensor records the image, and the shutter clicks safely shut. Easy!

The results show just how well Vincent set things up. More photos can be seen over at his Flickr page, and you can read his write-up, complete with all the nerdy details, at the DIY Photography blog.

Creating “The Splash” [DIY Photography]

Photo: Vincent Riemersma / Flickr

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Open Source Guitar Kit With 3-D Printed Body

Zoybar is a like Meccano for music. It’s an open-source guitar kit which you put together yourself, and the modular parts can be arranged in many combinations to make differently shaped instruments. The kit can be bought in either bass or six-string configurations, but the twist is that you can further customize the designs yourself.

The guitar kits are licensed under the Creative Commons, and the CAD files can be downloaded and freely tweaked in the open source 3-D software, Blender. Here we see the Zoybar Tor, a fretless six-string whose body is 3-D printed to give pretty much the minimum amount of material to work. There’s a scoop to rest on your leg, an arch at the top on which you can rest your arm and, well, that’s about it.

The Zoybar kits ship with a fretless neck, tuning gears, a humbucker pickup (it looks like an old PAF pickup) plus parts to make a skeletal body, and some bolts and Allen wrenches to hold it all together. Prices start at $670, and go up depending on shipping options.

So how does a 3-D printed guitar sound? Check it out:

Zoybar Tor [Zoybar. Thanks, Glen!]

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Video: Terrifying ‘Shaving Helmet’ is a Skull-Scraping Hard-Hat

“Shaving Helmet”. When you see those words, you are likely struck with the same terror that can clearly be seen on the test subject’s face. The fact that he is called “Kenny” just makes a fatal disaster seem all the more probable.

The helmet is the amazing invention of the mysterious Boris, friend of YouTuber Mattinbrooklyn. Take a look at in in action, and behold the fear in Kenny’s eyes:

If you daren’t watch the clip, here’s a spoiler. They don’t kill Kenny. Instead, everything goes (literally) smoothly. The helmet is for shaving heads, not faces, and has a “four-blade array” inside, with each blade running on Teflon-coated, aluminum rails. Two servo-motors, mounted on the sides like Princess Leia’s hair, swipe the blades across the victim’s head, and round the back is a shaving cream injector. The blades scour the skull of the shavee for a full twenty seconds before the indicator lights say that the torture is done.

Astonishingly, the helmet is not only safe but actually administers a decent trim. There’s still no way you’d catch me putting my own melon inside it, though. One note from the video: Judging by his shiny pate, Boris himself has clearly been testing the helmet. That must have given Kenny a little boost to his confidence. Imagine if Boris instead had long, flowing locks.

Does anyone have poor Kenny’s contact details? I need somebody to test out my latest invention – bulletproof contact-lenses. What could possibly go wrong?

The Shaving Helmet [YouTube. Thanks, Marc and Chris!]

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Japanese Book-Scanning Services Fueled by iPad, E-Readers

If I could have every one of the books on my groaning bookshelves converted to EPUB format and shrunk to fit my iPad or Kindle, then I’d do it in a second. Or rather, I’d pay someone else to do it in a second. Yusuke Ohki, spurred on by the twin motives of a a typically tiny Japanese apartment and a lack of laziness, not only scanned 2,000 of his own books, but started a company to do it for people like me.

The company is called BookScan, and you can have his 120-strong team of employees convert your paper books into electrons* for around a dollar (¥1,000) per book. The books are ripped into individual sheets and the scans are returned to you as PDFs. Once the hard work of digitizing has been done you can set your own computer to work processing to EPUB or other e-book formats. You can opt to have the scans “tuned” to your device, with margins trimmed for phones and colors removed for Kindle. After scanning, the books are dumped.

The iPad has fueled a sharp increase in demand for e-books in Japan, and yet there is still no equivalent of Amazon’s Kindle store to supply them. Thus, people have taken to scanning.

Sound familiar? Remember when the only way to get your music onto your MP3 player was to rip your own CDs? And look where that led: The music industry almost destroyed itself until Apple and iTunes yanked the music folks’ collective head from the sand and started selling the music. Every time I can’t find a book I want on Kindle, I think that the book publishers are going the same way. Especially if mass-scanning takes off and suddenly the internet is awash with DRM-free PDFs.

What about y’all, Gadget Lab readers? Would you pay to have your books scanned, clearing your shelves of dead trees? Or do you still like to leaf through your cook-books with a glass of wine, deciding what’s for dinner? Or should we just get free e-books for every real book we own? Answers in the comments.

BookScan product page [BookScan via Bloomberg]

Photo: BookScan

* I realize they already contain electrons, but you know what I’m getting at here.

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Untethered iOS 4.2.1 Jailbreak Live

With the new Wi-Fi hot-spotting feature in the Verizon iPhone which – will almost certainly be coming to GSM iPhones – there’s one less reason to jailbreak your device. Sharing your 3G connection with your laptop or Wi-Fi-only iPad was possibly the number-one goal of jailbreakers.

Still, that hasn’t stopped the hackers, and the latest way to crack your iPhone is Greenpois0n, a tether-free jailbreak for iOS 4.2.1, the latest version of Apple’s mobile operating system.

Untethered means that you can reboot your device without have to plug it into a computer. Greenpois0n is Mac-only right now, but Linux and Windows versions should be on their way soon enough. One tip: this hack isn’t recommended for anyone who has carrier-unlocked their iPhone, or who plans to do so.

So why would you still want to jailbreak your iDevice? Well, iPads still don’t get the nifty new hot-spotting feature, but there’s one big reason to open your iPad up at least: Retro-gaming. Sega might already be in the App Store, but if you want to play classic Nintendo titles on your iPad or iPhone, you’re going to have to crack the hood.

As ever, take care. We haven’t tested this jailbreak yet (I like to keep my iPad stable).

Greenpois0n [Chronic Dev Team]

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Robo-Rainbow, a Spectrum-Spraying Graffiti Machine

This is the Robo-Rainbow by artist Mudlevel, and its purpose is to brighten your day – whether you like it or not:

There’s not much to explain that can’t be gleaned from watching the hypnotic video, a piece of production as beautiful as the robot itself. Powered by a cordless drill, the torque is transferred to a counterweighted arm which lifts six paint spray-cans in an arc.

What looks like an Arduino circuit-board controls the speed of the arm as it traces an arc across the wall of your choosing, and triggers the servos that spray the paint. Even the spray-can mount is ingenious: six cans around a circular hoop that keeps everything lined up as it makes its circle, and at the same time gives the cans space whilst keeping the nozzles close together.

And best of all, the whole rig packs into a bike trailer.

It’s hard to find anything about this that isn’t awesome. The only problem might come from the cops. After all, you may be able to make a quick getaway on your bike, but with a long boom rattling paint-cans behind you, you’re going to be pretty easy to spot.

Robo-Rainbow [Mudlevel / Vimeo via Adafruit Industries and Hack an Day]

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Ubertooth One: A Bluetooth Network Hacking Tool on Kickstarter

Ubertooth One is a cheap, open-source Bluetooth network sniffer. Unlike Wi-Fi, which has had a wide range of free network monitoring tools for years, Bluetooth has remained pretty closed. Michael Ossman is about to change this, with his Ubertooth Kickstarter project.

The Ubertooth One is a USB plug with an antenna, and a ARM Cortex-M3 processor-based board in-between. Plug it into your computer and you can use it with various wireless monitoring tools like Kismet. The Ubertooth allows you to use Bluetooth in monitoring mode. This “promiscuous” mode makes the radio pass everything that it picks up onto the host computer. Normally, wireless receivers will ignore anything not addressed to them. In promiscuous mode, you can sniff and gather data meant for other devices.

These tools can be used for testing network security, or for hacking. Kismet, for example (and derivatives like the Mac OS X version KisMac) can be used to crack Wi-Fi networks’ passwords.

Until now, Bluetooth monitoring hardware would cost upward of $1,000. Ossman’s device will cost just $100 and, because both the software and hardware are open-source, you can build your own.

Ossman demonstrated the Ubertooth One at the ShmooCon hackers convention on Friday. Future software updates will enable Bluetooth injection and expanded monitoring modes.

Ubertooth One: an open source Bluetooth test tool [Kickstarter]

Project Ubertooth [Sourceforge]

Ubertooth One on Kickstarter [Michael Ossman’s blog]

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Microsoft Responds to Jailbreakers With Free Schwag, Not Lawsuits

Hack a Sony gadget and you might get slapped with a lawsuit. Hack a Windows phone, however, and you might get a T-shirt and a free phone from Microsoft.

That’s the sort of treatment Windows Phone 7 hackers report receiving from Microsoft: warm embrace, a willingness to collaborate and free gear as if they’re part of a new team.

In recent weeks, Microsoft representatives have reportedly met with Windows Phone 7 jailbreakers to discuss how they can support “homebrew” apps — third-party software that doesn’t require the approval of Microsoft — in a way that benefits both parties.

“Microsoft is interested in further understanding the “Home Brew” developer community’s perspectives on Windows Phone and invited a few members to our Redmond campus last week for an exchange of ideas,” a Microsoft spokeswoman told Wired.com.

This friendly approach even managed to impress George Hotz, the youngster who gained fame as the first hacker to unlock the iPhone.

“Perhaps a more appropriate way to deal with jailbreakers,” Hotz wrote on his website, linking to a story about a Windows Phone 7 hacker getting a free T-shirt.

Brandon Watson, who is part of Microsoft’s developer relations team, posted a public message on Twitter offering Hotz a free phone for making apps.

Microsoft’s friendly interactions with hackers are unusual in a highly litigious technology industry. Recently, Sony asked a court to remove all traces of a PlayStation 3 hack from the internet, alleging that it violated copyright law and would eat into PS3 game sales.

Similarly, Apple in 2009 attempted to make jailbreaking the iPhone illegal. The move was unsuccessful, as the DMCA in 2010 declared hacking the iPhone lawful. Jobs once described Apple’s relationship with iPhone jailbreakers as a “cat-and-mouse game.”

Of course, the PlayStation 3 and iPhone are far more popular than Microsoft’s newest mobile operating system, which debuted in October, 2010. As of December, an estimated 1.5 million Windows Phone 7 devices had shipped to retailers, and there were just 4,000 apps available for the platform. Recruiting hackers could be part of a much-needed developer- and customer-outreach campaign.

Microsoft isn’t being a complete pushover, of course. The first jailbreak for Windows Phone 7, dubbed ChevronWP7, will be broken with the next Windows Phone 7 software update, according to ChevronWP7’s makers. However, that seems to be a temporary roadblock.

The ChevronWP7 team says it’s under a non-disclosure agreement with Microsoft about just what will be officially supported with regard to Windows Phone 7 hacks, but that it’s “genuinely excited” about what lies ahead.

“We appreciate Microsoft’s outreach, genuine interest and involvement in this matter and we hope the community can understand we’re working towards a win-win scenario,” ChevronWP7 wrote in its blog.

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Photo: iStartedSomething


Home-Made Ice-Claws Won’t Crampon Your Style

Snowed in? Sick of a winter where nothing but permafrost and ice stretch ahead of you until the spring thaw? Then you might consider buying some crampons. Better still, why not make your own, like Instructables member Kresimir Pregernik? And even better than that, why not give them a bad-ass name, like ice claws?

Pregernik’s ice claws are dead simple. Just take a t-section bracket/plate, and screw in a few rust-proof screws (galvanized steel is a good option). To stop them unscrewing, Pregernik soldered them in place. Then simply place them under your boots, locate the screw-heads between the grips of the shoes and strap into place. A bicycle toe-strap would be a good choice here, as it’s both secure and quick to remove.

Repeat for the other shoe and then head out into the snow, laughing as your hapless fellow pedestrians – less resourceful than you – slip and fall.

Going by Pregernik’s article, he really stress-tested his home-made ice-claws. He’s walking on steep ground, in a forest, covered with thick, slippery ice. And he’s taking photographs. That, on its own, is pretty bad-ass.

Ice crampons [Instructables via Life Hacker]

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Fanboy Pimps His Tron-Inspired Segway

It’s surprising to us that it took almost a month since the wide release of Tron: Legacy for a light-cycle–inspired Segway to come, but come it has, nonetheless.

In true fanboy fashion, Ricky Brigante tricked out his Segway i2 Personal Transporter to look like one of Flynn’s grid-gliding beauties, pimping a ride that Xzibit himself would be proud to cruise in.

For something so flashy, Brigante’s method was relatively easy and low-tech. Using only white 2-inch reflective tape, a strand of blue LED Christmas lights and some electrical tape, Brigante took the plain black matte finish of his Segway and artfully applied the design using a mock-up model he made in Photoshop as a guide.

The finished product is simple yet geekishly elegant:

Start to finish, Brigante’s mod time took around four hours. Total cost? About 15 bucks (Segway not included, of course).

Not bad, for a user.

Check out the video below of Brigante’s hog in action:

TRON Segway Mod

Photos: Ricky Brigante/Insidethemagic.net [via Gizmodo]