Data Storage

Ask Slashdot: DIY NAS For a Variety of Legacy Drives? 260

An anonymous reader writes "I have at least 10 assorted hard drives ranging from 100 GB to 3 TB, including external drives, IDE desktop drives, laptop drives, etc. What's the best way to setup a home NAS to utilize all this 'excess' space? And could it be set up with redundancy built-in so a single drive failure would cause no data loss? I don't need anything fancy. Visibility to networked Windows PCs is great; ability to streak to Roku / iPad / Toshiba etc would be great but not necessary. What's the best way to accomplish this goal?"
Hardware Hacking

Sigrok: An Open Source Logic Analyzer 42

Uwe Hermann today announced the availability of sigrok, one of the first Open Source logic analyzers. Tired of being tied to Windows and proprietary software with limited features, in late 2010 he began work on flosslogic, which, after discovering Bert Vermeulen was also working on similar software, became sigrok. From the article: "Thus, the goal was to write a portable, GPL'd, software that can talk to many different logic analyzers via modules/plugins, supports many input/output formats, and many different protocol decoders. ... Currently supported hardware includes: Saleae Logic, CWAV USBee SX, Openbench Logic Sniffer (OLS), ZEROPLUS Logic Cube LAP-C, ASIX Sigma/Sigma2, ChronoVu LA8, and others." Their wiki has a list of supported protocols as well. You can grab the source over at SourceForge.
Hardware Hacking

MIT Tetris Hack: Source Code Released 40

An anonymous reader writes "MIT's The Tech published an article with technical details behind the Tetris hack they did on the Green Building earlier this year. The article includes photographs of the LED modules, as well as a link to some of the source code used in the hack. The hackers have released some of the source code on GitHub, and are looking for people to contribute code that could run on the system."
Android

KegDroid: Combining Arduino, Android, and NFC to Dispense Beer 48

mikejuk writes, quoting I Programmer: "If you are looking for an exciting hardware project, KegDroid deserves a look. It is a sophisticated system that involves Android, Arduino, NFC, plumbing and — beer. Perhaps the final stroke of genius is to package the whole thing in a Droid body. Some how the little green fella looks at home on the bar. You have heard of desktop and laptop apps now we have bartop apps to add to the list" Details are fuzzy currently, but from all appearances this is a repackaged KegBot in a very fancy shell. (Video for those without Flash.)
Hardware Hacking

Video Video: Paul "Froggy" Schneider's Hard-Won Wisdom For Conference Organizers Screenshot-sm 35

Cleveland-based programmer Paul Schneider, better known both online and in person as Froggy, first organized Notacon after trips to HOPE and other hacker cons gave him the idea; there weren't any gatherings like it in Cleveland at the time, and attending HOPE cost more in money and time than many locals would have been willing to justify for a weekend. Froggy sensed there was a big enough community in Cleveland of hackers, musicians, artists and others to support one, though. So he wrangled space, put out the word, and lined up enough presentations to make it happen. Now, Notacon's been going on for nine years straight (and year 10 is already in the works). In that time, Froggy's developed some thoughts about how to pull off organizing a gathering that involves hundreds of people at a time — and not just any people, but ones with soldering guns, nerf guns, fencing sabers, a lot of electrical equipment, and sometimes (egads!) even children. Froggy is quick to credit the dozens of people — about 20 core staff, and others with smaller but important roles — who also take part in planning and running the conference. Finding hard-working, like-minded souls may be the most universal part of his advice on running a similar event; watch the video interview for more.
Classic Games (Games)

Frogger Synchronized To Real-Life Traffic 43

Cerlyn writes "In order to celebrate 30 years of Frogger, Tyler DeAngelo and his friends created a version of Frogger synchronized to actual vehicles on 5th Avenue in New York City. Unlike a previous (dangerous) attempt at recreating the game, this version fits safely inside of a Frogger arcade cabinet, and pictures and videos of the construction of the game are available as well." (Just scroll down that first link to see the construction details.)
Hardware Hacking

Video Electronic Glitch Artwork Made by 'Weirdos Within the Weirdos' (Video) 58

Jake Elliott and Jon (not Elwood) Cates are the ones who describe Glitch Art people as 'weirdos within the weirdos' in the context of Notacon 9, which was recently held in Cleveland. It's 'an annual event that focuses on people who like to build, make, break and hack stuff,' and even in the Notacon context the Glitch Artwork crowd stands out. Sit down with Jake and Jon and share their joy in working with "feral glitches... before they are domesticated," and see some of the output from artist Dave Musgrave's circuit-bent consoles.
Open Source

Open Source Electric Cars — Good Idea Or Not? 178

thecarchik submits this interesting bit of flame: "Many are keen on the concept of open source electric cars — that is, electric cars where the built-in software can be tweaked, parameters can be changed, and in theory, the cars can be improved. Only it's a really, really bad idea. ... Even carmakers themselves have trouble with software — Fisker has issued a recall and apology recently with its Karma — so allowing average Joe to tweak the car's inner workings seems like a bad idea. Changing the characteristics of an electric car isn't as simple as re-jetting the carbs or swopping out the air filter." Whether software is controlling electric cars or not seems to me beside the point; access to the underlying software doesn't guarantee improvements, but blocking access to it doesn't stop car makers from making software mistakes — it only ensures that those few interested hackers who might be able to work around them have a harder time of it. (Not that tweaking car software is new, or going away.)
Hardware Hacking

Mechanical CPU Clock 37

An anonymous reader writes "I designed this CPU clock to help people learn about how a CPU works. The Mechanical CPU Clock shows the basic building blocks of a CPU (ALU, buses, RAM, registers, and a Control Unit). It executes a set of instructions which will emulate a simple wall clock. A detailed build/explanation is available on instructables.com."
Movies

How James Cameron Pumped Volume Into Titanic 289

MrSeb writes with ExtremeTech's account of how director (and deep sea explorer) James Cameron spent a reported $18 million converting his blockbuster movie, Titantic, to 3D. The article "looks at the primary way of managing depth in 3D films (parallax), how you add depth to a movie that was originally filmed in 2D, and some of the software (both computer and human-brain) difficulties that Cameron had to overcome in the more-than-two-year process to convert Titanic into 3D."
Hardware Hacking

Ask Slashdot: How To Make My Own Hardware Multimedia Player? 140

An anonymous reader writes "I was looking at multimedia players from brands such as SumVision, Noontec and Western Digital. They all seem to be some device which accepts a USB hard-drive and commands from an IR remote control, and throws the result over HDMI. I have my own idea of what a hardware multimedia player should do (e.g. a personalized library screen for episodes, movies and documentaries; resume play; loudness control; etc.). I also think it will a good programming adventure because I will have to make the player compatible with more than a few popular codecs. Is this an FPGA arena? Or a mini-linux tv-box? Any advice, books or starting point to suggest?" There certainly have been a lot of products and projects in this domain over the years, but what's the best place to start in the year 2012?
Hardware Hacking

AT&T Microcell Disassembly; Security Flaws Exposed 82

CharlyFoxtrot writes "The geeks over on the fail0verflow blog took apart an AT&T Microcell device which is 'essentially a small cell-tower in a box, which shuttles your calls and data back to the AT&T mothership over your home broadband connection.' They soon uncovered some real security issues including a backdoor : 'We believe that this backdoor is NOT meant to be globally accessible. It is probably only intended to be used over the IPSEC tunnel which the picoChip SoC creates. [...] Unfortunately, they set up the wizard to bind on 0.0.0.0, so the backdoor is accessible over the WAN interface.'"
Hardware Hacking

GNU/Linux Running On An 8-Bit Processor 361

dartttt writes, quoting Ubuntu Vibe: "Dmitry Grinberg has successfully booted Ubuntu 9.04 on an 8 bit micro machine with 6.5 KHz CPU and 16 MB RAM. Grinberg did this experiment on a ATmega1284p, 8-bit RISC microcontroller clocked at 24MHz and equipped with 16KB of SRAM and 128KB of flash storage. Since the RAM was too low, he added 30-pin 16MB SIMM to the machine and a 1 GB SD card to host Ubuntu image. ... To get the world's slowest Linux Computer running, he had to write an ARMv5 emulator which supports a 32bit processor and MMU. A similar machine can be made very easily and everything should come in about $20." There is source code available, but it's under a non-commercial use only license. Just how slow is it? "It takes about 2 hours to boot to bash prompt ('init=/bin/bash' kernel command line). Then 4 more hours to boot up the entire Ubuntu ('exec init' and then login). Starting X takes a lot longer. The effective emulated CPU speed is about 6.5KHz, which is on par with what you'd expect emulating a 32-bit CPU & MMU on a measly 8-bit micro. Curiously enough, once booted, the system is somewhat usable. You can type a command and get a reply within a minute." If you like watching a whole lot of nothing, there's a video of the boot process below the fold.
Wireless Networking

IETF Attendees Reengineer Their Hotel's Wi-Fi Net 120

alphadogg writes "What happens when a bunch of IETF super nerds show up in Paris for a major conference and discover their hotel's Wi-Fi network has imploded? They give it an Extreme Wi-Fi Makeover. Members of the Internet Engineering Task Force, who gathered for the outfit's 83rd meeting this week in France, discovered as they arrived at the Hotel Concorde Lafayette that the Wi-Fi was flakey and became flakier still as scores more attendees arrived and tried to connect, and the wired net was having issues of its own. Working behind the scenes, a team of IETF attendees negotiated with the hotel and were granted access to the wireless network, and began rigging up all sorts of fixes, which even included taping a Nexus S phone to a ceiling and turning off the radios on numerous access points to reduce noise."
Input Devices

See-Through 3D Computer With Gesture Controls Gives Us a Glimpse of the Future 63

silentbrad writes with this excerpt from Boy Genius Report: "Some believe a future full of massive, gesture-controlled computer displays like the ones seen in Twentieth Century Fox's Minority Report are an inevitability, and a prototype PC designed by an intern with the Microsoft Applied Sciences Group may be among the first steps in making that future a reality. Massachusetts Institute of Technology Ph.D student and MIT Media Lab research assistant Jinha Lee recently set out to change the way we interact with desktop computers. While progress has been made with 3D display technology, 3D has not yet proliferated in the personal computing space and Lee wants to change that. The end result of his work is a fascinating desktop computer with a transparent 3D display and a unique gesture-based interface that could change the way we use computers."
Handhelds

Canadian Man Releases Open Source Star Trek Tricorder 109

New submitter upontheturtlesback writes "Another example of Star Trek technology becoming a reality. In light of the recent Tricorder X-Prize announcement, Dr. Peter Jansen has openly released the designs for a series of Science Tricorders that he developed while a graduate student at McMaster University. The Science Tricorders are capable of sensing a variety of atmospheric, electromagnetic, and spatial phenomena. Where the Science Tricorder Mark 1 is a relatively easy-to-build proof of concept, the Science Tricorder Mark 2 runs Linux and resembles a cross between a Nintendo DS and scientific instrument with dual OLED touch displays. An exciting video shows them in action, and describes the project goal of creating general scientific tools for learning about and visualizing the world, as well as their importance for science education by helping kids understand abstract concepts like magnetism or polarization visually. The hardware schematics, board layouts, and firmware source are freely available on the Tricorder project website under various open licenses."
AI

Militarizing Your Backyard With Python and AI 112

mikejuk writes "Kurt Grandis took some cutting edge and open source AI tools, Python, an Arduino and a SuperSoaker and built the (almost) perfect squirrel hosing machine. The project involved Open Computer Vision (OpenCV), an a SVM learning procedure that he trained to tell the difference between a squirrel and a non-squirrel. After 'perfecting' the classifier the hardware came next — a SuperSoaker Mark I was used as the 'water cannon.' A pair of servos were used to aim the gun and a third to pull the trigger."
Hardware Hacking

Video Austin Case Modders Take Their Exotic PCs and a Giant LAN Party to SXSW (Video) Screenshot-sm 40

As a nexus of both computer programmers and other creative builder and maker types, SXSW (and Austin generally) is a great place to witness the overlap. John Zitterkopf and his pal Red, while helping to run the giant (and charitable!) LANFest at this year's event, had on hand for display a few of their own modded computer cases. John and Red are both part of Austin Modders, which helps Austinites swap tools and ideas (in-person, and via forums) for creating the kind of enclosures that computer makers simply can't — they're too time-intensive and too personalized for that. It's especially fun to see the effects that the newly widespread availability of laser cutters makes possible. (C'mon, O'Reilly, isn't it time for another Austin Maker Faire?)
Toys

3D Printer Models For Universal Construction Toy Connectors 76

dangle writes "F.A.T. Lab and Sy-Lab have officially released their Free Universal Construction Kit, allowing builders to freely interconnect parts from Lego, K'Nex, Fischertechnik, and other common building sets. ZomeTool and Zoob patterns will be available after related patents expire. The makers have also spent considerable effort investigating and anticipating legal complaints from manufacturers, using an Inverse Think of The Children Argument: Some may express concern that the Free Universal Construction Kit infringes such corporate prerogatives as copyright, design right, trade dress, trademarks or patents of the supported toy systems. We encourage those eager to enforce these rights to please think of the children — and we assert that the home printing of the Free Universal Construction Kit constitutes protected fair use." Model files are available over at Thingiverse. The designs are all covered by the CC BY-SA 3.0.

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