lucidkoan writes "Two Rice University students have transformed a simple salad spinner into an electricity-free centrifuge that can be used to diagnose diseases on the cheap. Created by Lauren Theis and Lila Kerr, the ingenious DIY centrifuge is cobbled together using a salad spinner, some plastic lids, combs, yogurt containers, and a hot glue gun. The simple and easily-replicated design could be an invaluable tool for clinics in the developing world, enabling them to separate blood to detect diseases like anemia without electricity."

Hugh Pickens writes "Computerworld reports that movie director James Cameron, of Avatar and Titanic fame, is working with Malin Space Science Systems Inc. to build an updated 3-D camera that will be installed on the Mars Science Laboratory rover Curiosity if completed in time, to be the machine's 'science-imaging workhorse,' says Michael Malin, who is working on the camera team. Malin delivered two cameras to be installed on the rover's main mast; however NASA has provided Malin with funding to work with Cameron to build alternatives to these two cameras. 'The fixed focal length [cameras] we just delivered will do almost all of the science we originally proposed. But they cannot provide a wide field of view with comparable eye stereo,' he says. 'With the zoom [cameras], we'll be able to take cinematic video sequences in 3-D on the surface of Mars.'"

jeremyz writes "With the inclusion of 802.11n in more and more Wi-Fi devices, the WRT54GL is losing its usefulness, even though it's still the de-facto standard for open source, Linux-running wireless routers. I've been looking around for a 802.11n router to replace the WRT54GL, but haven't really found anything besides the Netgear's WNR3500L. At first look, the WNR3500L looked great, but after some further investigation, I found that Netgear hasn't released all of the source, as they should have to comply with the GPL. Are there any good 802.11n routers to replace my aging WRT54GL?"

anethema writes "iPhone hacker planetbeing, from the iPhone Dev Team, has successfully ported the Android OS over to the iPhone. He is doing it on a first-generation iPhone, but others may be possible. The port is pretty functional, with data, voice, and many apps working, although it is running a bit sluggish and buggy at the moment. There appears to be much work left."

The Digital Foundry blog took an in-depth look at how Sony is introducing 3D technology to PlayStation 3 games. They give a step-by-step description of how the system generates a 3D frame (or rather, a pair of frames), and the graphical hurdles that need be to overcome to ensure the games look good. The article also discusses some of the subtle effects 3D technology can have on gameplay: "'One interesting thing came through in the immersion aspect was that in the first-person camera view, it felt so much more like being there. Typically when most people play MotorStorm, something like 90 per cent play in the third-person view,' Benson explains. 'As soon as we put the 3D settings in place, the first-person view became a lot more popular, a lot more people were using that view. This could indicate that 3D could perhaps change the standards, if you like.' ... 'We found that in the first-person view the game is giving you all the sorts of cues that you're used to in normal driving: speed perception, the ability to judge distances, things like that. It's far easier to avoid track objects.' The insertion of true stereoscopic 3D into MotorStorm also brings about a new sense of appreciation of the scale and size of the game world and the objects within it."

pyrosine writes "I've been thinking about this for a while and have no idea where to start. I have little or no previous experience in electronics — just what is covered in GCSE physics (wiring a plug and resistors — not much, I know). The majority of my interest lies in the wireless communication side of the field — i.e. ham radios and CB — but I am also interested in how many things work, one example being speakers, simply to better understand it. I would preferably like to start with some form of practical guide rather than learning the theory first, but where I would find such a walkthrough eludes me."

ridgecritter points out this interesting article in the New York Times on TechShop, a membership resource (a.k.a. hackerspace) in Menlo Park, CA, for building stuff. "From hammers to 3-D printers and laser cutters. Fun!" Along similar lines, and also recently in the NYT, a quick on-the-train conversation with Bre Pettis of MakerBot.

JoeBorn writes "Neuros has a blog posting discussing how they created their latest 'thin' HTPC to be nearly silent. Instead of using a net-top architecture (Atom or the like) they used a full 2.7GHz CPU and put their effort into making that nearly silent. The article talks about their efforts on fan selection, placement, control, and vibration dampening. This route was chosen to 'give more headroom' for CPU-hungry apps (web and otherwise) including Adobe Flash. Their solution costs $279; is this an appropriate trade-off for a device powering your TV?"

andylim writes "Dcept905, aka Paul, has interfaced an EEG headset and an Arduino with an IR LED to control his television set with thought alone. 'I have finally gotten around to re-writing some of my old code and re-recording a proper demo of controlling physical objects using thoughts by interfacing an EEG headset with an Arduino. While this technology is interesting and exciting, before anyone sees this as an endorsement for this particular EEG headset, I strongly recommend reading my full review of the device.'"

An anonymous reader writes "Having recently acquired an iPod Touch, DeviceGuru blogger Rick Lehrbaum soon found himself with an 80GB iPod paperweight knocking around and collecting dust. Then it hit him: why not use a Pogoplug as an iPod server, effectively filling his nifty new iPod Touch with 80GB of music whenever he has WiFi access? The how-to article at DeviceGuru.com explains how a Pogoplug and iPod Touch combined with free web services at pogoplug.com combine to form the 'PogoPod System.' It also introduces the Pogoplug's new UPnP support, and briefly reviews a couple of UPnP media-rendering iPhone and iPod Touch apps."

krou writes "The BBC covered the most recent Newcastle Maker Faire, an event which Slashdot first covered last year. From racing power tools, to making music using electric sparks, or a robot that solves the Rubik's Cube in 20 seconds, makers, crafters and hackers were out in force. YouTube has a selection of videos available, and there are some pics on Flickr. And, while it may not be a hover board, there was a self-balancing skateboard."

stronghawk writes "The creator of the Nickel-O-Matic is back at it and has now built a Turing Machine from a Parallax Propeller chip-based controller, motors, a dry-erase marker and a non-infinite supply of shiny 35mm leader film. From his FAQ: 'While thinking about Turing machines I found that no one had ever actually built one, at least not one that looked like Turing's original concept (if someone does know of one, please let me know). There have been a few other physical Turing machines like the Logo of Doom, but none were immediately recognizable as Turing machines. As I am always looking for a new challenge, I set out to build what you see here.'"

ganjadude writes "So I am moving to a location where the cell signal is very poor (I don't get signal inside my house), and I have been looking at wireless extenders such as the ones that Sprint and Verizon have. I am brought down by the cost (Sprint charges monthly, Verizon $250 up front, AT&T.... well they are AT&T). Being that this is Slashdot, and a lot of us live in basements (I kid!), I assume that some of the crowd has had this issue in the past. What have you done, or what alternatives are available to someone in such a situation?"

krou writes "With a budget of £500, Robert Harrison used cheap parts, a weather balloon, some duct tape, a digital camera, and a GPS device to capture some great photos of the earth from space that resulted in NASA calling him to find out how he had done it. 'A guy phoned up who worked for NASA who was interested in how we took the pictures,' said Mr Harrison. 'He wanted to know how the hell we did it. He thought we used a rocket. They said it would have cost them millions of dollars.' The details of his balloon are as follows: he used 'an ordinary Canon camera mounted on a weather balloon,' 'free software' that 'reprogrammed the camera to wake up every five minutes and take eight photographs and a video before switching off for a rest.' He also ensured the camera was 'wrapped in loft insulation' to make sure it could operate at the cold temperatures. The GPS device allowed him to pinpoint the balloon's location, and retrieve the camera when it fell down to earth attached to a small parachute."

An anonymous reader writes "Researchers from the University of Liege in Belgium have been able to perform real-time video analysis on a regular Canon digicam (video link) without any hardware modification. The results are shown directly on the digicam's screen. They use a hacked version of a popular open-source alternative firmware for Canon cameras: CHDK. This is a proof-of-concept that computer vision algorithms can now be embedded on regular Canon digicams with little effort (CHDK is coded in C). What other popular vision algorithms could be implemented? For what purpose?" You can get some idea about ViBe from this abstract at IEEE; basically, it allows background extraction in moving images.

adeelarshad82 writes "The open-source Arduino electronics platform has received a ton of attention from the hardware enthusiast community. And one more follower is joining the fray — Mario himself. The mustachioed plumber of console video game fame has been converted into an eight-by-eight LED matrix by Carnegie Mellon University student Chloe Fan. However, the game isn't quite the Mario you know from your legacy Nintendo Entertainment System. For starters, it's just lights. While one often sees the game's LED-backed grid used in devices like the open-source Monome, where it can function as a push-button toggle for music beats and effects, Fan's version of Mario uses the grid as a display only. Mario — or rather, a one-light representation of the game's hero — is controlled NES-style through the use of two buttons. One button makes Mario move forward; the other makes him leap into the air."

andylim writes "It's been rumoured for some time now that Apple will include RFID technology in a future iPhone. An RFID-packing iPhone could interact with various objects including opening doors and it could even be used in shops to register items at the checkout. Beating Apple to the RFID punch, last year a company called Wireless Dynamics announced an iPhone RFID accessory called the iCarte, but if you'd rather make your own reader then you'll be interested to know how a research assistant at University College London has managed to build his own RFID iPhone accessory."

b4dc0d3r writes "How do you make sense of the various model numbers or naming schemes for CPUs, graphics cards, and the related chipsets? All I want is something that will run Oblivion and output full 1080 video to a TV. Last time I built my own computer I just went to Pricewatch, made a few easy choices, and everything came to my door. Do I really have to research the differences among Core i5, Core 2 Duo, Pentium 4, Pentium D, Sempron, Athlon, Phenom ...? And that's just the processor. Is there a reference somewhere? In short, how do you buy a computer these days?"

jones_supa writes "Pixel Qi has just revealed their DIY kit for netbooks, planned to be out near the end of Q2 — sounds like June. This makes it possible to retrofit a screen to one fully readable in direct sunlight. In her blog, Mary Lou Jepsen says: 'It’s only slightly more difficult than changing a lightbulb: it’s basically 6 screws, pulling off a bezel, unconnecting the old screen and plugging this one in. That’s it. It’s a 5 minute operation.' She also talks about the 'laptop hospital,' a service depot started by kids in Africa."

SeanLind writes "After writing a similar article for converting your Rock Band guitar I got flooded with feedback and requests for a Drum Kit versions. So that's exactly what I did, three easy steps to converting your Rock Band drum kit into a wireless game controller, and using that to play online poker."