countertrolling sends in a clip from Wired that begins "...researchers at MIT have found a method to let users click and scroll exactly the same way they would with a computer mouse, without the device actually being there. Cup your palm, move it around on a table and a cursor on the screen hovers. Tap on the table like you would click a real mouse, and the computer responds. It's one step beyond cordless. It's an invisible mouse. The project, called 'Mouseless,' uses an infrared laser beam and camera to track the movements of the palm and fingers and translate them into computer commands... A working prototype of the Mouseless system costs approximately $20 to build, says Pranav Mistry, who is leading the project."

coondoggie writes "NASA today significantly expanded its Centennial Challenges program to include $5 million worth of new competitions to develop robots, small satellites, and solar powered spacecraft. One of the new competitions is the Sample Return Robot Challenge. Its purpose is to demonstrate a robot that can locate and retrieve geologic samples from wide and varied terrain without human control. This challenge has a prize purse of $1.5 million. The objectives are to encourage innovations in automatic navigation and robotic manipulator technologies."

shikaisi writes "Not content with just killing people in computer games, South Korea has gone one better and is deploying remotely controlled sentry robots on the border with the north. According to the article 'If the command centre operator cannot identify possible intruders through the robot's audio or video communications system, the operator can order it to fire its gun or 40mm automatic grenade launcher.'"

thecarchik writes "Last week's heat wave prompted another eruption of that perennial question: Won't electric cars that recharge from grid power overload the nation's electricity system? The short answer is no. A comprehensive and wide-ranging two-volume study from 2007, Environmental Assessment of Plug-In Hybrid Vehicles, looked at the impact of plug-in vehicles on the US electrical grid. It also analyzed the 'wells-to-wheels' carbon emissions of plug-ins versus gasoline cars. The load of one plug-in recharging (about 2 kilowatts) is roughly the same as that of four or five plasma television sets. Plasma TVs hardly brought worries about grid crashes."

theodp writes "If you're a math, CS, or engineering grad, odds are you've seen your share of robot-like teaching — but never an actual robot teacher. Now, that's starting to change. Computer scientists are developing robots with social components that can engage people and teach them simple skills, including household tasks, vocabulary, elementary imitation and taking turns. Several countries have been testing teaching machines in classrooms. At USC, researchers have had their robot, Bandit, interact with autistic children. South Korea is 'hiring' hundreds of robots as teacher aides and classroom playmates and is experimenting with robots that would teach English."

D4C5CE writes "A chess-playing German tinkerer has contrived (and made a video of) an amazing contraption that plugs real chess pieces into the freechess.org server using a 20W LED projector and an old webcam to read moves on a projected chessboard."

Barence writes "According to a Dell briefing given to PC Pro, 90% of company data is written once and never read again. If Dell's observation about dead weight is right, then it could easily turn out that splitting your data between live and old, fast and slow, work-in-progress versus archive, will become the dominant way to price and specify your servers and network architectures in the future. 'The only remaining question will then be: why on earth did we squander so much money by not thinking this way until now?'" As the writer points out, the "90 percent" figure is ambiguous, to put it lightly.

eldavojohn writes "ZFS is licensed under the CDDL and is considered to be open source, but NetApp is sending threatening legal letters to startups who look to offer ZFS on NAS appliances. This assault on Coraid has a few people worried about the future of ZFS as NetApp rears its ugly head yet again. The CEO of Coraid replied to NetApp's demands, saying, 'We made the decision to suspend shipment after receiving a legal threat letter from NetApp Inc., suggesting that the open-source ZFS file system planned for inclusion with our EtherDrive Z-Series infringes NetApp patents.' Will NetApp effectively destroy any future ZFS might have enjoyed?"

Doctor O writes "With all those nice emulators for classic gaming around (such as MAME, VICE or Stella) I want to establish monthly retro gaming evenings with some friends. The problem is I can't find any good joysticks for that purpose. There's a new version of the legendary Competition Pro, but judging from the many one-star reviews on Amazon, it's terrible. I found the USB version of the classic Atari Joystick, but it doesn't seem to be available and would have prohibitive shipping costs to Germany anyway. So, Slashdot to the rescue — where are the suitable USB joysticks for retro gaming?"

angry tapir writes "One Laptop Per Child has revealed it is adding a multitouch screen to the upcoming XO-1.75 laptop and is modifying software to take advantage of the new hardware. The XO-1.75 with a touch-sensitive 8.9-inch screen will start shipping next year. The laptop will run on an Arm processor and is the successor to the current XO-1.5 laptop, which runs on a Via x86 processor. OLPC will also add a multitouch screen on the next-generation XO-3 tablet, which is due to ship in 2012. Fedora will continue to be the base Linux distribution for XO-1.75 as the laptop changes from the x86 to Arm architecture."

thecarchik writes "Japanese based JFE Engineering has released its ultra-fast charge station. Designed to comply with the CHAdeMo standard developed by Tokyo Electric Power Company, Nissan, Mitsubishi, Subaru and Toyota, the system is capable of charging a 2011 Mitsubishi i-Miev from empty to 50% full in just three minutes. Even just three minutes plugged into the fast-charge station was enough to enable a standard 2011 Mitsubishi i-Miev to travel a further 50 miles before further charging was required."

kkleiner writes "Willow Garage has pulled off the ultimate engineering feat: teaching a PR2 robot to fetch you a beer from the fridge. Not only can the PR2 select the correct brew from the fridge, it can deliver, and even open the beer as needed. That's right, all the humans have to do is drink and relax. Prepare yourself for some major robot-envy as you check out the PR2 delivering much-needed refreshment in the video."

snydeq writes "OSNews' Howard Fosdick reports on the fake recycling market — one in which companies exploit cheap shipping, inexpensive labor, and a lack of safety and environmental law to export computers and other e-waste to China and Africa where it is 'recycled' with a complete lack of environmental and safety rules. 'This trade has become a thriving business. Companies called "fake recyclers" approach well-meaning organizations — charities, churches, and community organizations — and offer to hold a Recycling Day. The charity provides publicity, legitimacy, and a parking lot for the event. On the designated day, well-meaning residents drop off their old electronics for recycling. The fake recycler picks it up in their trucks, hauls it away for shipping, and makes money by exporting it to Chinese or African "recycling" centers. Nobody's the wiser,' Fosdick writes. Of course, the international community has, in fact, devised a set of rules to control e-waste disposal under the Basel Conventions, but the US — 'the international 'bad boy' of computer recycling — is one of four countries that have not ratified and do not adhere to these international agreements."

kkleiner writes "Aydogan Ozcan of UCLA has developed a microscope attachment for a cell phone – turning the device into a sort of mobile medical lab. It's both lightweight (~38g or 1.5 oz) and cheap (parts cost around $10). The cellphone microscope can analyze blood and saliva samples for microparticles, red blood cells, white blood cells, platelets, and water borne parasites. Ozcan and his team have recently won three prestigious awards for the device: a Grand Challenges award from the Bill and Melinda Gates Foundation (worth $100,000), the National Geographic Emerging Explorer award (worth $10,000), and the CAREER award from the National Science Foundation ($400,000). With these funds, Ozcan plans on starting case studies in Africa to see how the microscope can help revolutionize global medicine."

lawpoop writes "Russell Kirsch, inventor of the square pixel, goes back to the drawing board. In the 1950s, he was part of a team that developed the square pixel. '"Squares was the logical thing to do," Kirsch says. "Of course, the logical thing was not the only possibility but we used squares. It was something very foolish that everyone in the world has been suffering from ever since.' Now retired and living in Portland, Oregon, Kirsch recently set out to make amends. Inspired by the mosaic builders of antiquity who constructed scenes of stunning detail with bits of tile, Kirsch has written a program that turns the chunky, clunky squares of a digital image into a smoother picture made of variably shaped pixels.'"

jake-itguy writes "I am the IT guy for a small town municipality. Comcast called me the other day and told me I had to have a digital-to-analog converter for each TV in the municipality, as Comcast is turning off analog cable in September. I did a quick count, and we have 32 TVs across 6 buildings (22 being in the police and fire departments). Most of the TVs are hung on the walls. I told Comcast having a box for each TV was not acceptable and wanted a different solution. Comcast told me there was no other solution." Read on for more details of the situation, and to see if you can offer Jake any advice for distributing cable service within his Indiana town.

griffjon writes with this drool-inducing bit, describing a "side-by-side comparison of the OLPC's screen and an Acer with the new Pixel Qi screen installed, both of course sharing Mary Lou Jepsen's screen technology: 'The XO's dual mode screen still rules in terms of pixel resolution at 1200 x 900 vs. the Acer's 1024 x 600. It was amazing to see Windows 7, Amazon Kindle software, the New York Times web site and a QuickTime video in direct sunlight. Shades of gray and some color tints are visible. Besides the XOs and e-ink based Kindle ereaders, no other color screen device I own can be seen as clearly in sunlight. Not even the famed iPad. In the video, you can see that at a certain angle where line of sight and sun are aligned, the new Pixel Qi screen glows as if backlit!'"

EconolineCrush writes "SSDs hardly offer compelling value on the cost-per-gigabyte basis. But what if one considers performance per dollar? This article takes a closer look at the value proposition offered by today's most common SSDs, mixing raw performance data with each drive's cost, both per gigabyte and as a component of a complete system. A dozen SSD configurations are compared, and results from a collection of mechanical hard drives provide additional context. The data are laid out in detailed scatter plots clearly illustrating the most favorable intersections of price and performance, and you might be surprised to see just how well the SSDs fare versus traditional hard drives. A few of the SSDs offer much better value than their solid-state competitors, too."

An anonymous reader writes "I'm starting a project that I hope that the engineers, makers and general DIYers in the Slashdot crowd can help out with. The full story's on the website, but the short version is as follows: my aim is to make a cheap, recycled, sustainable building, to document the process fully and to release anything that would help others to do the same. I intend to use an old train carriage as the shell, but the ideas should extend to shipping containers, aeroplane fuselages or anything similar. I know I'm not the first to do this, but I can't see anyone else who's provided a detailed step-by-step account of the build, complete with plans and the rest. Before I start, though, I'm trying to draw on as much collective experience as possible, and to head off mistakes before they happen. My question to Slashdot is simple: what do you think I need to know before I begin?"

Smerky writes "As I've been getting more and more into hobby electronics I have been finding it difficult to keep track of all the different ICs and other electronics that I have (resistors, capacitors, etc.). What are Slashdotters' recommendations for some inventory software? Certain qualifications that I'd be looking for personally are that it has to run on Linux/OSX well or be web-based (to run well on an Apache2 server)."