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The relatively straightforward swing-hinged dissection of an equilateral triangle to a square in this video is called "Dudeney's dissection" and has been known since 1902. For a gallery of hinged dissections, check out Tse-hsuan Yang's page at Taiwan's National Tsing Hua University.
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The relatively straightforward swing-hinged dissection of an equilateral triangle to a square in this video is called "Dudeney's dissection" and has been known since 1902. For a gallery of hinged dissections, check out Tse-hsuan Yang's page at Taiwan's National Tsing Hua University.
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Just as everything seemed to be going so well, I came up to Vancouver on September 24th to renew my H1b visa and it turns out the approval I got last year is not worth it's weight in paper. Upon appearing for my interview, my previous approval notice was held by the consulate till I furnished a ton of extra documentation from our tax filings last year, to a full report of all employees, all of my bank statements right down to the photographs of our work area (as alien founders we cannot have startups in garages and our apartments, it has to be in real offices).It makes no sense that someone like this should be going through this sort of ridiculous bureaucratic process, held back by bureaucrats who don't understand how startups work.
I worked through the rest of Thursday and all through the night gathering all this evidence.... So after working through the night to get the evidence to the officers the very next day by 11:30 am, I was told that my application would take a week to be reviewed.
My biggest concern is that an LLC due to it's structure doesn't pay a salary to it's members but a guaranteed payment. My attorney has already warned me that this is a slippery slope to start explaining to consular officers when the time comes.
Now leaving aside the exorbitant costs of living in a city like Vancouver for a week, I don't have to talk about what an entire week means in startup terms. This particular week in question, since we're in fundraising mode, I have had to cancel a meeting with Comcast Capital and cannot present at the Plug and Play Expo on Thursday Oct 1st - they were nice enough and believed in our product to pretty much waive the $1500 participation fee, only to realize I can't make it.
Here's the trailer for the movie adaptation of Cormac McCarthy's bleakly horrific, post-apocalyptic novel The Road. It looks mighty grim. I'll be first in line to see it on November 25.
MAKE subscriber Brian writes in to point out MemAxe, a Simon-like game made with an 8-pin PicAxe microcontroller. It's pretty simple, but i like how all the buttons are connected up using only one input pin. So how is this possible? Well, instead of reading the input pins using the digital input, they are instead connected up similar to a voltage divider, with resistor on each switch being twice that of the switch before it. Then, by measuring the voltage of the input pin and figuring out which combination of resistors corresponds to the value read, you can figure out which switches were pressed. Here is what the schematic looks like:

These are cool tricks, but before you go crazy optimizing your project, keep in mind that it might be cheaper/easier to just buy a processor with enough inputs, since they usually aren't much more expensive.
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MAKE subscriber Brian writes in to point out MemAxe, a Simon-like game made with an 8-pin PicAxe microcontroller. It's pretty simple, but i like how all the buttons are connected up using only one input pin. So how is this possible? Well, instead of reading the input pins using the digital input, they are instead connected up similar to a voltage divider, with resistor on each switch being twice that of the switch before it. Then, by measuring the voltage of the input pin and figuring out which combination of resistors corresponds to the value read, you can figure out which switches were pressed. Here is what the schematic looks like:

These are cool tricks, but before you go crazy optimizing your project, keep in mind that it might be cheaper/easier to just buy a processor with enough inputs, since they usually aren't much more expensive.
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Maja Einstein is the younger sister of great scientist Albert Einstein. Maja was the only friend of Albert during his childhood. When little Albert saw his sister for the first time he thought she was a kind of toy and asked: “Yes, but where does it have its small wheels?”
In December of 2007, Free Range Studio released the excellent video, "The Story of Stuff", in an attempt to educate people about over-consumption. It has been so well-received that many schools include it in their curricula.Take the 'The Story of Stuff' Quiz (Thanks, Chris!)Now, in what may likely be an opening salvo in the coming attack on Cap & Trade legislation, Right Wing front-man Glenn Beck is attacking "The Story of Stuff" as socialist propaganda, suggesting that it is un-American.
Beck suggests, "The reason why America is not as happy as it was in 1950 or 1920 or whenever, 100 years ago, is because our priorities are wrong, but it has nothing to do with exploiting the planet and has everything to do with losing faith in God."
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The sponsors of this year's Halloween contest are giving away microchips! To score some, go here, register, then choose the product line and device family you're interested in and click on the orange icons to order free samples. From their press release:
Hey Makers in the United States, UK, Germany, France and Italy... We have the exclusive on some great news from Microchip! Beginning Friday, October 2, you will be able to get free microcontroller, analog and memory samples from http://www.microchip.com/samples/. That's right, you don't even have to pay for shipping and handling! This is a great opportunity to get some parts for your embedded microcontroller project in the Make: Halloween Contest 2009.
Make: Halloween Contest 2009
Microchip Technology Inc. and MAKE have teamed up to present to you the Make: Halloween Contest 2009! Show us your embedded microcontroller Halloween projects and you could be chosen as a winner.
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The sponsors of this year's Halloween contest are giving away microchips! To score some, go here, register, then choose the product line and device family you're interested in and click on the orange icons to order free samples. From their press release:
Hey Makers in the United States, UK, Germany, France and Italy... We have the exclusive on some great news from Microchip! Beginning Friday, October 2, you will be able to get free microcontroller, analog and memory samples from http://www.microchip.com/samples/. That's right, you don't even have to pay for shipping and handling! This is a great opportunity to get some parts for your embedded microcontroller project in the Make: Halloween Contest 2009.
Make: Halloween Contest 2009
Microchip Technology Inc. and MAKE have teamed up to present to you the Make: Halloween Contest 2009! Show us your embedded microcontroller Halloween projects and you could be chosen as a winner.
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artists need to make money to eat and to continue to make art.She goes on to compare the new model to her experience busking in the past. In a separate discussion I had with Amanda a few months back, she referred to the new business model, "power busking." I agree almost entirely with her on this... with one, perhaps crucial, quibble. I get a little wary of focusing too much on the "busking" aspect, as it feels a little too close to the give it away and pray model, that isn't really a complete business model. I tend to believe that if you give people a real reason to buy (i.e., something scarce and valuable, offered at a reasonable price), then it's not "busking" at all. It's not "asking for money" at all.
artists used to rely on middlemen to collect their money on their behalf, thereby rendering themselves innocent of cash-handling in the public eye.
artists will now be coming straight to you (yes YOU, you who want their music, their films, their books) for their paychecks. please welcome them. please help them. please do not make them feel badly about asking you directly for money. dead serious: this is the way shit is going to work from now on and it will work best if we all embrace it and don't fight it.
unless you've been living under a rock, you've surely noticed that artists ALL over the place are reaching out directly to their fans for money.
how you do it is a different matter.
maybe i should be more tasteful.
maybe i should not stop my concerts and auction off art.
i do not claim to have figured out the perfect system, not by a long shot.
BUT ... i'd rather get the system right gradually and learn from the mistakes and break new ground (with the help of an incredibly responsive and positive fanbase) for other artists who i assume are going to cautiously follow in our footsteps. we are creating the protocol, people, right here and now.
i don't care if we fuck up. i care THAT we're doing it.

In this week's Ask CRAFT column, I fielded a reader's question about photographing your projects. It's applicable for all kinds of makers, so go on and check it out!
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In this week's Ask CRAFT column, I fielded a reader's question about photographing your projects. It's applicable for all kinds of makers, so go on and check it out!
Read more | Permalink | Comments | Read more articles in Photography | Digg this!
Photos, above and after the jump, shared with Boing Boing by Audrey N. Carpio of The Philippine Star. Her first-person account from the ongoing disaster follows, and includes recommendations on how you can help the victims. She shot the photos in this post two days after the typhoon, on a relief drive in a town called Tumana. Link to Flickr set.
Typhoon Ondoy by Audrey Carpio
Typhoon Ondoy, aka Tropical Storm Ketsana dumped 40 cm of rain on the Philippines last Saturday before he/she left to wreak watery havoc upon Vietnam and Cambodia. But Manila and its surrounding environs are still in various states of calamity, with many parts of the city still submerged under dirty brown water and others, while drying out, caked in leptospirosis-inducing mud. The government and its presidentiables have been slow to act upon what could've been their Hurricane Katrina-hero moment but quick to seize upon relief efforts for electioneering. Instead, it is thanks to the generosity and ingenuity of the Filipino people who mobilized themselves through Twitter and Facebook that hundreds of thousands of victims have been fed, clothed and sheltered.
As early as Saturday evening, when people began to realize that floods have flashed rather quickly and videos of drowning trucks emerged on YouTube, relief plans grew almost organically on the networks. Tweets encouraging people to gather food, blankets, and clothing for donations were some of the earliest; by the next day there was an updatable and sharable Google spreadsheet on all the drop-off and volunteer centers; by Monday, almost all status updates and tweets had to do with emergency hotline numbers, relatives of friends who were stranded on a rooftop, and traffic advisories warning which roads were impassable. A Google map of people in need of rescuing was uploaded, although its usefulness is questionable, considering the general low-techness of the National Disaster Coordinating Council's rescue squads they only had 13 rubber boats with which to deploy to the affected barangays †or villages (to put it into perspective, 1.9 million people were inundated with flood water, nearly 380,000 have been evacuated into schools, churches and other emergency shelters, and 246 people have died.
But many lives were undoubtedly saved through information dissemination, random,
repeated and retweeted as they may be. Through a shotgun marriage of new and old
media, all the streaming online updates and SMS messages were filtered through
Gang Badoy, a social advocate (www.RockEdRadio.com) who took it upon herself to
hit the FM airwaves and broadcast the news she was receiving: which places
needed help, who was about to give birth, and whether crocodiles really escaped
from the zoo. Radio still reaches a heck of a lot more people here than anything
put on the web. Erwin Romulo, a journalist and colleague of Gang's, says,
"The only thing some people had were cellphones that could pick up only FM.
Going for 16 hours straight over three days, she reported what people sent in.
Any info. Citizen journalism in all its raw and brazen glory. Gang never wavered
though she sometimes sounded delirious or distraught with each update. Reacting
real time, you'd think she sounded crazy. But at that time, she was the sole
voice of reason."
It has been four days since the deluge, and Metro Manila is still struggling and on survival mode. Donation tweets have been getting more specific: "Please bear in mind need for halal food aid for Muslim flood victims in Maharlika Village," and "Folks, volunteerism is flourishing but not enough goods. Women need sanitary napkins, babies diapers, antitetenus injections, can openers." This country was not prepared for a disaster of this sort; climate change wasn't even on the agenda. A new storm is about to come in -- we'll keep you posted on how we do. In the meantime, watch this video.
You may donate here (UNICEF) or here (Red Cross/Philippines).
(Special thanks to Karen Marcelo for her kind assistance.)
True that San Francisco skaters have a reputation that precedes them with their home turf being some of the gnarliest steep urban streets in the country. Check out these 36 SF skaters on Freebords flexing mad skills with neon Tetris-like shapes mounted on their heads to awesome effect.
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True that San Francisco skaters have a reputation that precedes them with their home turf being some of the gnarliest steep urban streets in the country. Check out these 36 SF skaters on Freebords flexing mad skills with neon Tetris-like shapes mounted on their heads to awesome effect.
Read more | Permalink | Comments | Read more articles in Toys and Games | Digg this!
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What's in your fridge?
(Thanks, Aaron!)
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The Melting Pot is an older 'visualizer' project, however it was way ahead of it's time. Developed back in 2001 by Itiro Siio and Noyuri Mima, it's purpose is to bridge the physical distance between a team that is scattered across an office building together by bringing the them together using sweet, sweet coffee. Rather than an audio or visual cue, however, they opted to appeal to the olfactory system, and developed a system to simultaneously broadcast the siren's call of fresh brew to the whole team. The idea is that everyone would subconsciously smell the fine flavors, decide to grab some coffee, and then meet up in the break room.
To accomplish this, they hacked a wireless transmitter into the office coffee machine, so that it would send out a signal when a fresh pot of coffee is ready. Next, they built a bunch of aroma generators that start releasing a coffee aroma when a ready signal is received. The aroma generators are pretty simple- just a fan that blows over a couple of bags of instant coffee.
I've worked in several environments where this would have been a great way to bring my team together. Anyone up for a remake? Have better ideas about what kinds of smells to use to subtly influence people?
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The Melting Pot is an older 'visualizer' project, however it was way ahead of it's time. Developed back in 2001 by Itiro Siio and Noyuri Mima, it's purpose is to bridge the physical distance between a team that is scattered across an office building together by bringing the them together using sweet, sweet coffee. Rather than an audio or visual cue, however, they opted to appeal to the olfactory system, and developed a system to simultaneously broadcast the siren's call of fresh brew to the whole team. The idea is that everyone would subconsciously smell the fine flavors, decide to grab some coffee, and then meet up in the break room.
To accomplish this, they hacked a wireless transmitter into the office coffee machine, so that it would send out a signal when a fresh pot of coffee is ready. Next, they built a bunch of aroma generators that start releasing a coffee aroma when a ready signal is received. The aroma generators are pretty simple- just a fan that blows over a couple of bags of instant coffee.
I've worked in several environments where this would have been a great way to bring my team together. Anyone up for a remake? Have better ideas about what kinds of smells to use to subtly influence people?
Read more | Permalink | Comments | Read more articles in Electronics | Digg this!
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A TV commercial for a 900 number that makes people cry. (Via Filled with Chocolate Pudding!)
The Netflix contest is a prime example of individual virtuosity at work. One team was clearly in the lead and then a consortium of teams that had worse performance joined together and combined their innovations to create an algorithm that won the contest. For most of the contest, individuals toiled to figure out a solution. At the end, a consortium was formed. None of the invention happened through a crowd.The problem -- yet again -- is that this guy (a consultant) seems to again be confused about the difference between invention and innovation. Yes, some individuals came up with different ideas. But what made the Netflix prize so interesting was that they weren't able to really achieve the necessary breakthrough until they collaborated. That's what pushed them over the edge. That's what added that real value to take it to the necessary next step. A crowd is always made up of individuals. That different individuals contribute different parts doesn't change the value of crowdsourcing at all.
This American Life producer Alex Blumberg talks with Ed Ugel, who had a very unusual dream job: he bought jackpots from lottery winners. When you win the lottery, your prize is often paid out in yearly installments. And Ed would offer winners a lump sum in exchange for their yearly checks. He's talked with thousands of lottery winners, and the vast majority, he says, wish they'd never won. Ed is writing a book about his years in the "lump sum industry" called Money for Nothing: One Man's Journey through the Dark Side of Lottery Millions. It comes out in September 2007.

WATCH: Download MP4 / Watch on YouTube / more at boingboingvideo.com.
Ever wondered what a giant, sprawling, three-day music festival in the desert would look like if it were nano-crammed into just a few minutes? Here you go. Boing Boing Video presents this ambitious timelapse video of the 2009 Coachella Music and Arts Festival directed by filmmaker Ray Klein. Ray says:
This was my third year taking time lapse at Coachella, and it was one of the best. I always find it interesting to see the ebb and flow of people throughout the day, and the hardcore fans who show up when gates open and lie out in the field in their bathing suits! Coachella is always great about supporting the arts and this is another example of their commitment. Enjoy!The music you hear is "Everything is Happening At The Same Time," by Hawke, courtesy of Eighth Dimension Records. His new record, "+++," comes out next week.
Ray adds: "Special Thanks to Bill and Leo from Coachella for making it happen, Hawke and QBAM and Eighth Dimension Records for the music, and TJ Martin for the output."
Over at Wired's Danger Room blog, news that
The Royal Air Force accidentally killed a young girl in Afghanistan -- by dropping a box of leaflets on her. The British Ministry of Defence is carrying out a full investigation. Meanwhile, the seemingly-antiquated practice of leaflet bombing continues. In the 21st century, it remains one of the primary tools of psychological warfare; U.S. Special Operations Command is even looking to build leaflet-carrying missiles.(thanks, Noah Shachtman)
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Boing Boing guestblogger Mitch Horowitz is author of Occult America: The Secret History of How Mysticism Shaped Our Nation and editor-in-chief of Tarcher/Penguin publishers.
Since the late 1960s a very original and unclassifiable inner-city mystery religion called the Five Percenters has served as an inspiration behind some of the language and imagery of New York's hip hop scene. I recently spoke with All Things Considered host Guy Raz about the strange (and persistent) appearance of occult and esoteric themes in the work of Jay-Z.


Britons John Bryant and Chris Sangwin have written a book called How Round is Your Circle? that looks incredible. I haven't read it (yet), but the promotional website by itself has me sold already. Highlights include Reuleaux tetrahedra, square-hole drilling, and self-righting polyhedra.
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Britons John Bryant and Chris Sangwin have written a book called How Round is Your Circle? that looks incredible. I haven't read it (yet), but the promotional website by itself has me sold already. Highlights include Reuleaux tetrahedra, square-hole drilling, and self-righting polyhedra.
Read more | Permalink | Comments | Read more articles in Online | Digg this!
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"When you give it away for free it has no value. When you begin charging for it it has some value."That's wrong on both counts, and you would think that a major American media CEO would understand the difference between price and value. It's a bit scary that he seems to think that putting a price on something automatically gives it value. Unfortunately, he may have to learn that lesson the hard way. I could say that the blank pad on my desk has a price of $10,000. But that's meaningless, because no one would value it that high. The price you put on something is entirely independent of the value that buyers have for it. If the price you put on it is lower than the value they get from it, then they may decide to buy. But that value isn't created by the price.

The 26th Chaos Communication Congress is accepting submissions for papers, lectures, and workshops:
26C3 is the annual four-day conference organized by the Chaos Computer Club (CCC) in Berlin, Germany.First held in 1984, it since has established itself as "the European Hacker Conference" attracting a diverse audience of thousands of hackers, scientists, artists, and utopists from all around the world. We want you to join and be a part of this unique event which serves as a public platform for cross-culture inspiration and borderless networking. 26C3 is fun!
The 26C3 conference program is roughly divided into six general categories. These categories serve as guidelines for your submissions (and later as a means of orientation for your prospective audience). However, it is not mandatory for your talk to exactly match the descriptions below. Anything that is interesting and/or funny will be taken into consideration.
The categories are Society, Hacking, Making, Science, Culture, and Community. Further descriptions of these are outlined on the site. You might check out last year's event site and Flickr pool, too. (Thanks, Aram!)
26C3: Here Be Dragons
26th Chaos Communication Congress
December 27th to 30th, 2009
Berlin, Germany
CC-licensed photo above by Flickr user Angelo.
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The 26th Chaos Communication Congress is accepting submissions for papers, lectures, and workshops:
26C3 is the annual four-day conference organized by the Chaos Computer Club (CCC) in Berlin, Germany.First held in 1984, it since has established itself as "the European Hacker Conference" attracting a diverse audience of thousands of hackers, scientists, artists, and utopists from all around the world. We want you to join and be a part of this unique event which serves as a public platform for cross-culture inspiration and borderless networking. 26C3 is fun!
The 26C3 conference program is roughly divided into six general categories. These categories serve as guidelines for your submissions (and later as a means of orientation for your prospective audience). However, it is not mandatory for your talk to exactly match the descriptions below. Anything that is interesting and/or funny will be taken into consideration.
The categories are Society, Hacking, Making, Science, Culture, and Community. Further descriptions of these are outlined on the site. You might check out last year's event site and Flickr pool, too. (Thanks, Aram!)
26C3: Here Be Dragons
26th Chaos Communication Congress
December 27th to 30th, 2009
Berlin, Germany
CC-licensed photo above by Flickr user Angelo.
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Not surprisingly, the British Beer and Pub Association is not in favor of the plan and does not want the new glasses to be mandatory. "For the drinker," said a BBPA representative, "the pint glass feels better, it has a nice weight and the drink coats the glass nicely. . . . Is it necessary to replace the much-loved pint glass for safety reasons in the vast majority of pubs where there is no problem?" Yes, said the Home Office Minister. "Innovative design has played an important role in driving down overall crime," he claimed, though it wasn't clear what innovative design he was referring to, maybe the knives. "This project will see those same skills applied to the dangerous and costly issue of alcohol-related crime and I am confident that it will lead to similar successes."British Government Considers Mandating Plastic Pint Glasses
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As part of a course at the United States Military Academy at West Point, maker Roy D. Ragsdale developed a prototype Street View-like camera using a laptop, $300 in off-the-shelf components, and open source software. A Python script captures eight 1280x1024px JPEG files that are then stitched together and uploaded to Google Earth.
Construction was straightforward. On a flat octagonal heavy-cardboard base, I glued small posts for the cameras' clips to latch onto. I aligned each unit and then placed the USB hubs and the GPS receiver in the middle. I secured the cables with Velcro and sandwiched everything with another piece of cardboard. The whole thing's the size of a small pizza box, weighing less than 1 kilogram. Excluding the notebook (a 2-gigahertz machine with 512 megabytes of RAM running Ubuntu Linux), the hardware cost about $300.
[thanks, Erico]
As part of a course at the United States Military Academy at West Point, maker Roy D. Ragsdale developed a prototype Street View-like camera using a laptop, $300 in off-the-shelf components, and open source software. A Python script captures eight 1280x1024px JPEG files that are then stitched together and uploaded to Google Earth.
Construction was straightforward. On a flat octagonal heavy-cardboard base, I glued small posts for the cameras' clips to latch onto. I aligned each unit and then placed the USB hubs and the GPS receiver in the middle. I secured the cables with Velcro and sandwiched everything with another piece of cardboard. The whole thing's the size of a small pizza box, weighing less than 1 kilogram. Excluding the notebook (a 2-gigahertz machine with 512 megabytes of RAM running Ubuntu Linux), the hardware cost about $300.
[thanks, Erico]
"I feel for her, but if she could go to one of the area hospitals and see a baby born to a meth-addicted mother ..."It's difficult to see what that has to do with anything considering that everyone knows this woman had no intention of making meth. The whole thing is ridiculous, but is symptomatic of a problem that we're seeing all too often, where the focus is on enforcing poorly thought out laws, to ridiculous consequences, with no attempt to ever look at the negative consequences and seeing if the original law made any sense in the first place.
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There are two tutorials here describing the construction of a Raimi-style Necronomicon prop. The original, by Instructables user onespartan, is pictured uppermost, and a derivative work by Raolin, is pictured at bottom. Nice work, both of you!
Make: Halloween Contest 2009
Microchip Technology Inc. and MAKE have teamed up to present to you the Make: Halloween Contest 2009! Show us your embedded microcontroller Halloween projects and you could be chosen as a winner.
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There are two tutorials here describing the construction of a Raimi-style Necronomicon prop. The original, by Instructables user onespartan, is pictured uppermost, and a derivative work by Raolin, is pictured at bottom. Nice work, both of you!
Make: Halloween Contest 2009
Microchip Technology Inc. and MAKE have teamed up to present to you the Make: Halloween Contest 2009! Show us your embedded microcontroller Halloween projects and you could be chosen as a winner.
Read more | Permalink | Comments | Read more articles in Halloween | Digg this!
Comments Off [link]
Comments Off [link]
It's simply not true. The BBC is being deliberately misleading and extremely naive here. Naive because it's just not credible that the Hollywood studios and other rightsholders will boycott broadcast TV without encryption. They made exactly the same threat in the US, saying that without the Broadcast Flag, they'd stop licensing sport and movies to broadcast TV. There's no Broadcast Flag in the US. The broadcasts of sports and new release movies go on.
Misleading because the BBC's proposal turns over control of the design of TV receivers and recorders in the UK to an offshore consortium called DTLA, effectively turning it, not Ofcom, into the British regulator. DTLA and its guidelines will determine what you can do with your TV signals, not Parliament and copyright law. DTLA prohibits the use of open source drivers, which means that this will render obsolete all cards and other devices with that can be used with free/open software. It also prohibits unencrypted digital outputs, which means that you won't be able to buy a converter box that sends a HD digital signal to your SD Freeview box, so you'll have to throw out the old box.
Be sure to check out the comments where I'm debunking the BBC's talking points directly.
Some background: licence-fee-paid television must be free to receive in the UK. Unlike cable and commercial satellite signals, free-to-air television is carried on public airwaves, which broadcasters are allowed to use for free. In return, broadcasters are expected to provide programming on those airwaves, for free. And not just free as in "free beer", but also free as in "free speech." The terms and conditions for free-to-air telly are "Do anything you want with this, provided it doesn't violate copyright law."The BBC is encrypting its HD signal by the back doorBut big rightsholder groups - US movie studios, mostly - object to this. They'd prefer a "copyright-plus" regime, in which they get to invent a bunch of new copyrights for themselves, without the inconvenience of public debate or parliamentary lawmaking. The way they do this is by slapping restrictive licence agreements on their media, or rather licence "agreements," in inverted commas. You don't get to negotiate these "agreements," they're imposed on you, and are sometimes even invisible to you.

Here is an easy way to implement automatic temperature control for your next project. The web site includes the schematic, parts list, PCB artwork, and application examples.
The heart of the circuit is the LM35DZ temperature sensor which is factory-calibrated in the Celsius (or Centigrade) scale with a linear Degree->Volt conversion function. The output voltage (at pin 2) changes linearly with temperature from 0V (0oC) to 1000mV (100oC).Read more | Permalink | Comments | Read more articles in Electronics | Digg this!

Here is an easy way to implement automatic temperature control for your next project. The web site includes the schematic, parts list, PCB artwork, and application examples.
The heart of the circuit is the LM35DZ temperature sensor which is factory-calibrated in the Celsius (or Centigrade) scale with a linear Degree->Volt conversion function. The output voltage (at pin 2) changes linearly with temperature from 0V (0oC) to 1000mV (100oC).Read more | Permalink | Comments | Read more articles in Electronics | Digg this!
Science has obtained Border Agency documents showing that isotope analyses of hair and nail samples will also be conducted "to help identify a person's true country of origin." The project "is regrettable," says Caroline Slocock, chief executive of Refugee and Migrant Justice headquartered in London. Although asylum-seekers are asked to provide tissue samples voluntarily, turning down a government request for tissue could be misinterpreted, she says, "so we believe [the program] should not be introduced at all."Scientists Decry "Flawed" and "Horrifying" Nationality TestsThe Border Agency's DNA-testing plans would use mouth swabs for mitochondrial DNA and Y chromosome testing, as well as analyses of subtle genetic variations called single-nucleotide polymorphisms (SNPs). One goal of the project is to determine whether asylum-seekers claiming to be from Somalia and fleeing persecution are actually from another African country such as Kenya. If successful, the Border Agency suggests its pilot project could be extended to confirming other nationalities. Yet scientists say the Border Agency's goals confuse ancestry or ethnicity with nationality. David Balding, a population geneticist at Imperial College London, notes that "genes don't respect national borders, as many legitimate citizens are migrants or direct descendants of migrants, and many national borders split ethnic groups."
But wait, there's more!
Christopher Phillips, University of Santiago de Compostela: I had been asked earlier this year by colleagues in the UKFSS about the prospects of differentiating Somali ancestries from other populations in E[ast] Africa, however, I am sceptical about the precision possible beyond a simple five global group differentiation from limited typing of Y-chromosome/mtDNA/small-scale multiplexes of autosomal SNPs. Clearly there is a serious risk of falling into the trap of over-interpretation of population variation data that has limited scope. My suggestion this spring was to perform whole genome scans to isolate informative markers and begin to build these into sets of SNPs that could then be assessed with comprehensive reference populations. However, this does not amount to consultation on the correct way to develop and test a custom ancestry analysis system. I also doubt that my suggested approach to validating the system will be pursued, since a large number of samples would be required both within the relatively large region of Somalia and from surrounding populations such as those of Ethiopia, Sudan and Eritrea. Therefore a good deal of time, money and patience would be needed to find the best markers for the purpose and then test their efficacy....U.K. Border Agency Docs and Expanded ReactionsJane Evans, NERC Isotope Geosciences Laboratory: I can't imagine how you use [isotope evidence] to define nationality....It worries me as a scientist that actual peoples' lives are being influenced based on these methods.
I was at a dinner with Amanda a few weeks ago and we talked about this at length. She's not only incredibly interesting on the subject, but also insightful -- and successful at it.
i can't help it: i come from a street performance background. i stood almost motionless on a box in harvard square, painted white, relinquishing my fate and income to the goodwill and honor of the passers-by.why i am not afraid to take your money, by amanda fucking palmeri spent years gradually building up a tolerance to the inbuilt shame that society puts on laying your hat/tipjar on the ground and asking the public to support your art...
i did this for 5 years, and i made a living that way. dollar by dollar. hour by hour. it was hard fucking work.
and for the last 10 years, i have been working my ass off in a different way: tirelessly making music, traveling the world, connecting with people, trying to keep my balance, almost never taking a break and, frankly, not making a fortune doing it. i still struggle to pay my rent sometimes. i'm still more or less in debt from my last record. i'll lay it all out for you in another blog. it's just math.
if you think i'm going to pass up a chance to put my hat back down in front of the collected audience on my virtual sidewalk and ask them to give their hard-earned money directly to me instead of to roadrunner records, warner music group, ticketmaster, and everyone else out there who's been shamelessly raping both fan and artist for years, you're crazy.

This concept watch Alexandros Stasinopoulos uses three interleaved tapes to tell time. I have no idea if it'd be possible to build this, but man, I want one.
'ora' concept watch by alexandros stasinopoulos
(Thanks, Paul!)
Read more of this story at Slashdot.
Ricoh has released a firmware update for its GR Digital III compact camera. Version 1.21 fixes minor issues related to playback and manual focus. It also rectifies an occasional Exif data error when using conversion lens GW-2. The firmware is available for immediate download from Ricoh's website. Comments Off [link]
Tim sent us a link to his Arduino noise box synth that he built. It has 16 programmable sequences, 4 waveforms, a noise generator and a random feature. Check out the link for a lot more information, including the source code.
This project is an Arduino based step sequencer, synthesizer and sound effects box. It was constructed a year ago as a third birthday present, and has recently come back to me for some 'refurbishment' - fresh batteries and some glue to fix LEDs that have been pushed into the box.
In the Maker Shed:
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Make: Arduino
Tim sent us a link to his Arduino noise box synth that he built. It has 16 programmable sequences, 4 waveforms, a noise generator and a random feature. Check out the link for a lot more information, including the source code.
This project is an Arduino based step sequencer, synthesizer and sound effects box. It was constructed a year ago as a third birthday present, and has recently come back to me for some 'refurbishment' - fresh batteries and some glue to fix LEDs that have been pushed into the box.
In the Maker Shed:
![]()

Make: Arduino
Read more of this story at Slashdot.
This one's from ye olde YouTubes way back in aught-six -- but a friend just shared it with me tonight.
"I've? been ready to explode like Mt St Helen's since the weekend of May 27th and 28th," says the bowl-haired and beturtlenecked gentleman with the stack of redacted documents. (thanks, misteryes!)
Read more of this story at Slashdot.

Following closely on the heels of Maker Faire Rhode Island is more big excitement for the littlest state. A better world by design is a conference focused on applying technological solutions to the needs and challenges of society. This year promises to be very exciting, with an all star-speaker line-up including Jan Chipchase of Nokia, Maker Faire Africa organizer Emeka Okafor, Emily Pilloton of Project H Design, architect Teddy Cruz, and prosthetics engineer Stuart Harshbarger.
The conference also boasts a range of panels on various issues, hands-on creative workshops, and a design challenge hosted by Core77.
I dig the grassroots nature of this event. Students from Brown University and Rhode Island School of Design conceived of, organized, and run the conference. In their own words:
A Better World by Design brings a global community of innovators to Providence, Rhode Island, to reach across disciplines and unite under a common goal. Presenters share engaging stories, workshops teach creative skills, and discussions reframe perspectives. A Better World by Design is an immersive experience that deepens our understanding of the power of design, technology, and enterprise to reshape our communities and sustain our environment.
I am very much looking forward to the Maker Meetup during lunch on Friday, October 2, where I'll be sharing my experiences organizing Maker Faire Rhode Island with other Maker Faire organizers from California and Ghana. I'm also looking forward to moderating a panel on the Future of Transportation. It is going to be a fun, interesting, and educational weekend!

Following closely on the heels of Maker Faire Rhode Island is more big excitement for the littlest state. a better world by design is a conference focused on applying technological solutions to the needs and challenges of society. This year promises to be very exciting, with an all star-speaker line-up including Jan Chipchase of Nokia, Maker Faire Africa organizer Emeka Okafor, Emily Pilloton of Project H Design, architect Teddy Cruz, and prosthetics engineer Stuart Harshbarger.
The conference also boasts a range of panels on various issues, hands-on creative workshops, and a design challenge hosted by Core77.
I dig the grassroots nature of this event. Students from Brown University and Rhode Island School of Design conceived of, organized, and run the conference. In their own words:
A Better World by Design brings a global community of innovators to Providence, Rhode Island, to reach across disciplines and unite under a common goal. Presenters share engaging stories, workshops teach creative skills, and discussions reframe perspectives. A Better World by Design is an immersive experience that deepens our understanding of the power of design, technology, and enterprise to reshape our communities and sustain our environment.
I am very much looking forward to the Maker Meetup during lunch on Friday, October 2, where I'll be sharing my experiences organizing Maker Faire Rhode Island with other Maker Faire organizers from California and Ghana. I'm also looking forward to moderating a panel on the Future of Transportation. It is going to be a fun, interesting, and educational weekend!
Square bike... at the Math Midway (more photos)...
Square bike... at the Math Midway (more photos)...
Dude, her head's bigger than her pelvis. From Photoshop Disasters (thanks, Antinous!)
Read more of this story at Slashdot.
Wow! This robot sorts over 400 pancakes per minute. Right around 1:15 it gets amazing, it seems like it's sped up, but they need to slow it down in the video to show it off! ... via jk.
Wow! This robot sorts over 400 pancakes per minute. Right around 1:15 it gets amazing, it seems like it's sped up, but they need to slow it down in the video to show it off! ... via jk.
Read more of this story at Slashdot.
Read more of this story at Slashdot.


Ever wonder what path your Roomba takes as it clears the floor? Well, here's an easy way to find out, and create some fine artwork in the process. The above pictures were made by sticking an LED to the top of a Roomba vacuum, then photographing it using a long exposure setting. This results in a form of motion capture, and you can clearly see where your Roomba has been by where the light trails are. There are a bunch of other photos at the Flickr group.
Now, if I was going to do this, I would also put a big light on my cat, so I can show how quickly it makes a b-line for cover when the scary vacuum turns on.
Above photos by Flickr users reconscious and digitalosh.
[thanks Patti!]
Read more | Permalink | Comments | Read more articles in Arts | Digg this!


Ever wonder what path your Roomba takes as it clears the floor? Well, here's an easy way to find out, and create some fine artwork in the process. The above pictures were made by sticking an LED to the top of a Roomba vacuum, then photographing it using a long exposure setting. This results in a form of motion capture, and you can clearly see where your Roomba has been by where the light trails are. There are a bunch of other photos at the Flickr group.
Now, if I was going to do this, I would also put a big light on my cat, so I can show how quickly it makes a b-line for cover when the scary vacuum turns on.
Above photos by Flickr users reconscious and digitalosh.
[thanks Patti!]
Read more | Permalink | Comments | Read more articles in Arts | Digg this!
Read more of this story at Slashdot.


In my last post, I presented the beginnings of a plan to connect an iRobot Create to an iCop SPARK computer running Windows Embedded CE R2.0. Now it's time to dive in and get some code loaded onto the iCop machine, then see if I can talk to the Create using the commands listed in the Create Open Interface.
Before I get started with Windows Embedded, I want to verify that I can talk to the Create using a known-good source, my desktop computer. I think this is an important debug step. Even though I'd like my software to run properly the first time, the truth is that it may require debugging before it functions correctly. I can simplify this debug task and verify that the Create serial interface is working by connecting it to my development PC and reading the boot message after power-on:

Once I've done that, I'm confident that I can establish a connection between the Create and my PC or the iCop box with my Windows Embedded program, and I can be confident any communications problems are a result of my poorly written program!
I already have Visual Studio 2005 and Windows Embedded CE6.0 R2 installed on my development computer, so I'm almost ready to connect the iCop computer. There is one more step required to fully configure the development computer so that I can begin Windows Embedded development. The different SPARK boards have a variety of processors and peripherals and thus require a unique software library and configuration set to allow Visual Studio 2005 to generate compiled code appropriate for the given low-level hardware. This unique library and configuration set is called a "board support package" for the obvious reasons. Each SPARK board vendor supplies a board support package that can be downloaded and installed for a specific board.
Now I'm ready to create and install the operating system and my application onto my iCop board! I'll discuss that in the full post here.