Quotulatiousness

August 28, 2013

Home 3D printers are not quite plug-and-play yet

Filed under: Technology — Tags: , , — Nicholas @ 09:45

Ars Technica‘s Lee Hutchinson finds through actual hands-on experience that “home” 3D printers are still in the “tinkering” stage of development:

I volunteered to put the Printrbot through its paces from the perspective of someone who’s only vaguely aware of home 3D printing as a technology. Before getting my hands on the Printrbot Simple, I’d never even seen a home 3D printer before.

What I found as I dug in was a pit without a bottom — an absolute yawning Stygian abyss of options and tweaking and modifications and endless re-printing. To own and use a 3D printer is to become enmeshed in a constant stream of tinkering, tweaking, and upgrades. It feels a lot like owning a project car that you must continually wrench on to keep it running right. Almost from the moment I got the Printrbot out of the box and printing, I had to start the tweaking. And as a total 3D printing newb, it really soured me on the Printrbot and on the entire concept of low-cost 3D printing in general. “Surely,” I thought, “this frustration is because I’m cutting my teeth on a $299 3D printer intended for early adopters. Surely a higher-end 3D printer is easier!”

And so, in order to see how a higher-end home 3D printer works, I found myself in possession of a much more expensive, much more impressive-looking Makerbot Replicator 2. That device costs $2,200 as opposed to the Printrbot Simple’s $299. The first few things I printed out with the much more expensive device were amazing. It was like leaving the project car in the garage and driving the Lexus to work — you get in, press the button, and go. But then, after perhaps 20 hours of print time, the problems started. Filament would fail to feed. The printer would clog. The printer produced spaghetti instead of actual models, ruining overnight print jobs. I had to replace the plunger-based filament extruder with a new spring-loaded version to overcome a design flaw. I found myself re-leveling the build plate and disassembling and reassembling the extruder way more than I ever had to do with the little Printrbot. All of that was as fun as it sounds.

The Makerbot wasn’t turning out to be an expensive but reliable Lexus. It was turning out to be an expensive and you-better-own-two-because-one-will-always-be-broken 1970s-era Jaguar. It wasn’t just frustrating — it was actually enraging. If I had paid $2,200 out of my own pocket for the Makerbot, I would have been sorely tempted to drive up to New York and fling the thing through the windows of Makerbot’s office.

Update, 30 August: Another thing holding back widespread adoption of home 3D printing is that you need proper designs to use for your 3D printer, and most people are not familiar with CAD or CAD-like design programs. This will continue to be a hindrance for original designs, but MakerBot Digitizer can help you copy physical items:

The Digitizer is about the size of a portable 45 rpm record player — with a laser-shooting accessory attached to the back. MakerBot head honcho Bre Pettis debuted a prototype of the Digitizer at his SXSW keynote address back in March, and now the device is almost ready for sale. The MakerBot Digitizer starts shipping in October.

Here’s how it works. You start with a relatively small object — you’re limited to a maximum weight of 6.6 pounds, and the object has to be less than 8 inches wide and 8 inches tall. Put it on the Digitizer’s turntable, and the device scans it with two “eye-safe” lasers as the turntable spins. After the object has been fully scanned, the Digitizer outputs a 3-D design file. The entire scanning process takes about 12 minutes, according to the MakerBot website — there are 800 individual steps within a full 360-degree rotation.

Of course, this is just a surface scan: hollow objects or objects with interior voids will still need further design processing before you can hit “copy”.

August 21, 2013

Ottawa deploys drone to … chase away geese

Filed under: Business, Cancon, Technology — Tags: , — Nicholas @ 08:48

Not every drone carries missiles:

Fed up with geese fouling the grass and water at its Petrie Island beaches, the city government is calling in drone strikes.

It’s proving amazingly effective, said Orléans Coun. Bob Monette. The place used to be haunted by as many as 140 geese, which can eat several pounds of grass in a day and poop out nearly as much in waste.

“Now we’re down to anywhere from 15 to 20 on a daily basis,” Monette said. The weapon the city’s deployed is a “hexcopter,” a remote-controlled chopper with rotors that can hover, soar, circle and — most importantly — scoot along just above the ground, scaring the bejesus out of dozing geese. It’s operated by contractor Steve Wambolt, a former IT worker who launched his own business after one too many layoffs.

“When he takes it out, they put their backs up straight and they’re watching,” Monette said. “When he starts it and it goes up off the ground, they sort of walk into a formation, and as soon as it starts moving, they all take off and they don’t come back until the next day.”

Wambolt starts buzzing the geese at about 4 a.m. The drone also works on seagulls, though they’re a bit braver and have to be harassed almost constantly to keep them away. Both sorts of birds can be territorial and nasty to beachgoers. Their droppings also feed bacteria in the water, which can make swimming dangerous.

Update: Reason.tv attended a recent gathering of civilian drone manufacturers and users:

When you hear the word drone you may immediately think of bombs being dropped in the Middle East or the surveillance of citizens here in the United States, but engineers and aviation geeks have wondered for decades if unmanned flight might solve a few of our world’s problems or just make our lives a little easier.

Over 30 years ago, science magazines wondered if drones would “sniff out pollution,” or, “make pilots obsolete,” and engineers are saying that those ideas may be possible now.

“The technology has reached a point where it can be very inexpensive to buy [unmanned aerial system technology],” says John Villasenor, an engineer at UCLA and a senior fellow at the Brookings Institution. Villasenor says that advances in GPS, airframe design, and flight control methods have made unmanned flight available to pretty much anyone.

As a part of the FAA’s re-authorization of funds in February 2012, Congress passed a bill that included the integration of unmanned aircraft into U.S. airspace. First for public entities like law enforcement or fire fighters and second for civilians like farmers or filmmakers with full integration by 2015. In July, the FAA approved two drones for commercial use which could fly as early as 2013.

August 20, 2013

Another reason to stick with printed books – “undownloading”

Filed under: Books, Business, Law, Media, Technology — Tags: , , — Nicholas @ 10:22

At Techdirt, Glyn Moody has another word you need to know about those convenient ebooks you’ve been adding to your reader:

So, it seems that ebook users need to add a new word to their vocabulary: “undownloading” — what happens when you leave the authorized zone in which you may read the ebooks you paid for, and cross into the digital badlands where they are taken away like illicit items at customs. If you are lucky, you will get them back when you return to your home patch — by un-undownloading them.

What makes this tale particularly noteworthy is the way it brings together a host of really bad ideas that the publishing and distribution industries insist on deploying. There’s DRM that means you can’t make backups; there’s the country-specific usage that tries to impose physical geography on your digital ebooks; and there’s the update that spies on you and your system before deciding unilaterally to take away functionality by “undownloading” your ebooks. And copyright maximalists wonder why people turn to unauthorized downloads….

I have dozens of books stashed away on my iPhone … but they’re all public domain works. I doubt I’ll be adding any DRM-afflicted items to my library any time soon.

Everything Is A Remix

Filed under: Business, Law, Liberty, Media, Technology — Tags: , , , — Nicholas @ 10:09

Remixing is a folk art but the techniques are the same ones used at any level of creation: copy, transform, and combine. You could even say that everything is a remix.

H/T to American Digest for the link.

August 18, 2013

Rounding up the “government is spying on everyone” news

Filed under: Government, Liberty, Technology — Tags: , , , , — Nicholas @ 10:48

A linkapalooza of information at Zero Hedge:

That’s just the first few items of a long list. Read the whole thing.

August 17, 2013

Delays in India’s submarine program

Filed under: India, Military, Technology — Tags: , , , — Nicholas @ 10:21

In the Times of India, Rajat Pandit reviews the state of the Indian Navy’s submarine fleet:

Is India’s aging fleet of conventional submarines threatening to go the MiG-21 way? The Tejas light combat aircraft (LCA), already 30 years in the making, was slated to replace the obsolete MiG-21 in the 1990s but is still at least two years away from becoming fully-operational.

Similarly, the Navy too was to induct 12 new diesel-electric submarines by last year, with another dozen to follow in the 2012-2030 timeframe. This was the 30-year submarine building plan approved by the Cabinet Committee on Security (CCS) way back in July, 1999. But the Navy has not inducted even one of the 24 planned submarines till now, and is forced to soldier on with just 14 aging conventional vessels.

“The Navy is steadily modernizing in the surface warship and aircraft arenas. But our aging and depleting underwater combat arm is a big worry. But it also must be kept in mind that INS Sindhurakshak‘s accident is the first such incident we have had in over four decades of operating submarines,” said a senior officer.

Sources said INS Sindhurakshak, after Wednesday’s accident, is “a clear write-off”. Of the 13 submarines left now, as many as 11 are over 20 years old. The setback comes when China and Pakistan are systematically bolstering their underwater combat capabilities, with the former being armed with over 55 submarines.

Update: MarineLink reports on the investigation into the INS Sindhurakshak explosion.

The Indian Navy diving teams have been working nonstop to reach into the compartments of the submarine since rescue operations commenced early noon of August 14. The boiling waters inside the submarine prevented any entry until noon that day. Access to the inner compartments of the submarine was made almost impossible due to jammed doors and hatches, distorted ladders, oily and muddy waters inside the submerged submarine resulting in total darkness and nil visibility within the submarine even with high power underwater lamps. Distorted and twisted metal within very restricted space due extensive internal damage caused by the explosion further worsened conditions for the divers. This resulted in very slow and labored progress. Only one diver could work at a time to clear the path to gain access. After 36 hours of continuous diving effort in these conditions, Navy divers have finally reached the second compartment behind the conning tower in the early hours of August 16.

Three bodies have been located and extricated from the submarine from this compartment. The bodies are severely disfigured and not identifiable due to severe burns. The bodies have been sent to INHS Asvini, the naval hospital, for possible DNA identification which is likely to take some more time.

The state of these two bodies and conditions within the submarine leads to firm conclusion that finding any surviving personnel within the submarine is unlikely.

Fracking and the environment

Filed under: Environment, Media, Technology — Tags: , , , , — Nicholas @ 09:03

Matt Ridley debunks five common myths about environmental issues with fracking:

The movie Gasland showed a case of entirely natural gas contamination of water and the director knew it, but he still pretended it might have been caused by fracking. Ernest Moniz, the US Energy Secretary, said earlier this month: “I still have not seen any evidence of fracking per se contaminating groundwater.” Tens of thousands of wells drilled, two million fracking operations completed and not a single proven case of groundwater contamination. Not one. It may happen one day, of course, but there’s few industries that can claim a pollution record that good.

Next comes the claim that shale gas production results in more methane release to the atmosphere and hence could be as bad for climate change as coal. (Methane is a more powerful greenhouse gas than carbon dioxide, but stays in the atmosphere for a shorter time and its concentration is not currently rising fast.) This claim originated with a Cornell biology professor with an axe to grind. Study after study has refuted it. As a team from Massachusetts Institute of Technology put it: “It is incorrect to suggest that shale gas-related hydraulic fracturing has substantially altered the overall [greenhouse gas] intensity of natural gas production.”

Third comes the claim that fracking uses too much water. The Guardian carried a report this week implying that a town in Texas is running dry because of the water used for fracking. Yet in Texas 1% of water use is for fracking, in the United States as a whole 0.3% — less than is used by golf courses. If parts of Texas run out of water, blame farming, by far the biggest user.

Fourth, the ever-so-neutral BBC in a background briefing this week described fracking as releasing “hundreds of chemicals” into the rock. Out by an order of magnitude, Auntie. Fracking fluid is 99.51% water and sand. In the remaining 0.49% there are just 13 chemicals, all of which can be found in your kitchen, garage or bathroom: citric acid (lemon juice), hydrochloric acid (swimming pools), glutaraldehyde (disinfectant), guar (ice cream), dimethylformamide (plastics), isopropanol (deodorant), borate (hand soap); ammonium persulphate (hair dye); potassium chloride (intravenous drips), sodium carbonate (detergent), ethylene glycol (de-icer), ammonium bisulphite (cosmetics), petroleum distillate (cosmetics).

As for earthquakes, Durham University’s definitive survey of all induced earthquakes over many decades concluded that “almost all of the resultant seismic activity [from fracking] was on such a small scale that only geoscientists would be able to detect it” and that mining, geothermal activity or reservoir water storage causes more and bigger tremors.

(more…)

August 14, 2013

The “Indie Web” is the very definition of a fringe project

Filed under: Media, Technology — Tags: , , , , , — Nicholas @ 08:55

Wired‘s Klint Finley wants you to meet the indie hackers who want to jailbreak the internet (among other things):

One guy is wearing his Google Glass. Another showed up in an HTML5 t-shirt. And then there’s the dude who looks like the Mad Hatter, decked out in a top hat with an enormous white flower tucked into the brim.

At first, they look like any other gaggle of tech geeks. But then you notice that one of them is Ward Cunningham, the man who invented the wiki, the tech that underpins Wikipedia. And there’s Kevin Marks, the former vice president of web services at British Telecom. Oh, and don’t miss Brad Fitzpatrick, creator of the seminal blogging site LiveJournal and, more recently, a coder who works in the engine room of Google’s online empire.

Packed into a small conference room, this rag-tag band of software developers has an outsized digital pedigree, and they have a mission to match. They hope to jailbreak the internet.

They call it the Indie Web movement, an effort to create a web that’s not so dependent on tech giants like Facebook, Twitter, and, yes, Google — a web that belongs not to one individual or one company, but to everyone. “I don’t trust myself,” says Fitzpatrick. “And I don’t trust companies.” The movement grew out of an egalitarian online project launched by Fitzpatrick, before he made the move to Google. And over the past few years, it has roped in about 100 other coders from around the world.

August 13, 2013

Apple – dead fruit walking, says Larry Ellison

Filed under: Business, Technology — Tags: , , — Nicholas @ 10:27

At The Register, Jasper Hamill reports on the latest oracular pronunciamento from Larry Ellison:

Oracle supremo Larry Ellison has told Apple that it doesn’t stand a chance of success without Steve Jobs at the helm.

In an interview with CBS, the multibillionaire performed a bizarre dance routine meant to illustrate what chance Apple has in the post-Jobs era. Just like the oracles of old, Ellison’s predictions take a bit of interpretation.

The Oracle was asked what he thought of Jobs, to which he replied: “He was brilliant, he was our Edison, he was our Picasso. He was an incredible inventor.”

But then came a question about how the fruity firm is likely to fare without their godhead on the throne.

“Well, we already know,” Ellison said, before embarking upon a simple piece of interpretive dance to illustrate his thoughts.

Blacksoft or Microberry … will Microsoft scoop up Blackberry?

Filed under: Business, Cancon, Technology — Tags: , , , , — Nicholas @ 10:21

In Maclean’s, Peter Nowak wonders why Microsoft hasn’t already purchased Blackberry:

The logic is pretty solid. Android and Apple have run away with the smartphone market, with the Canadian company clutching at a distant and declining third-place slice. The latest numbers say the company has indeed lost that spot to Microsoft and its Windows Phone.

That’s not cause for any excitement — these are low, single-digit scraps we’re talking about. Android and Apple have about 80 and 13 per cent of the market, respectively. (As an aside, it’s funny how those numbers are starting to look like the historical division between Windows and Mac computers, huh?)

So what’s the fastest and easiest way for a company to make its anemic market share bigger? It doesn’t take a mathematician to figure out the answer: combine it with somebody else’s equally anemic share into something with a little more meat on its bones. Putting BlackBerry and Microsoft’s Windows phones together would amount to almost seven-per-cent share. That’s still small, but it’s almost within striking distance of Apple.

More importantly, Microsoft — through an acquisition — would eliminate its biggest obstacle. In some countries, especially Canada. BlackBerry still enjoys decent success as the de facto third brand that buyers gravitate to because they’re loyal and/or hate Android and Apple. By most accounts, Windows Phone sales are extra anemic to non-existent in these markets as a result.

August 12, 2013

Online privacy and habitual oversharing

Filed under: Liberty, Media, Technology — Tags: , , , , — Nicholas @ 09:47

Cory Doctorow explains why so many of us have gotten into the habit of oversharing personal details in our social media activities:

Whenever government surveillance is debated, someone inevitably points out that it is no cause for alarm, since people already overshare sensitive personal information on Facebook. This means there’s hardly anything to be gleaned from state surveillance that isn’t already there for the taking on social media.

It’s true people overshare on social networks, providing information in ways that they later come to regret. The consequences of oversharing range widely, from losing a job to being outed for your sexual orientation. If you live in a dictatorship, intercepted social media sessions can be used by those in charge to compile enemies lists, determining whom to arrest, whom to torture, and – potentially – whom to murder.

The key reason for oversharing is that cause and effect are separated by volumes of time and space, so understanding the consequences can be difficult. Imagine practising penalty kicks by kicking the ball and then turning around before it lands; two years later, someone visits you and tells you where your kicks ended up. This is the kind of feedback loop we contend with when it comes to our privacy disclosures.

In other words, you may make a million small and large disclosures on different services, with different limits on your sharing preferences, and many years later, you lose your job. Or your marriage. Or maybe your life, if you’re unlucky enough to have your Facebook scraped by a despot who has you in his dominion.

August 10, 2013

3D printing using durable materials

Filed under: Technology — Tags: , , — Nicholas @ 09:32

At TechHive, Kevin Lee reports on a different kind of 3D printing effort:

I sat on a 3D-printed bench.

“Durability” and “strength” are about the last words I would ever associate with 3D printing. But I’m not talking about the small, plastic trinkets you would print out with your MakerBot. This is Emerging Objects, a small fabrication studio in Oakland, CA that’s researching how to 3D-print using materials like wood, ceramic, newspaper, concrete, and salt.

Some 3D-printed art pieces made from newspaper, salt, and maple wood.

Some 3D-printed art pieces made from newspaper, salt, and maple wood.

“Everyone is focusing on machines, and we’re interested in what machines can make,” Emerging Objects co-founder Ronald Rael explained to TechHive. “We saw a limitation in what a machine can make because of the medium, and so we wondered if we could reformulate that media to suit our own architectural agendas to print big.”

As with the report last week about the chap 3D-printing his own Aston Martin replica, the small size of the individual printed units is a bottleneck for producing larger objects. Using a 3D printer to produce key components while using ordinary production methods for larger pieces is the economical way to work right now. That is bound to change as the technology improves, but practical limits on size and cost will continue at the “consumer” end of the 3D printer market.

According to Rael, powder-based 3D printing was one of the very first 3D printing technologies to come into being. It hasn’t really caught on, however, because the machines are so much more expensive than other types of 3D printers. On the other hand, the fused deposition modeling (FDM) method, which lays down thin layers of hot extruded plastic to create objects, has become popular among makers thanks to its accessibility and relative affordability.

All that said, Rael still sees a promising future for powder-based 3D printing.

“We have a [powder] printing technology that I think is very open-ended in terms of the kind of materials that can be in it. Then we have [a FDM] one that’s very closed and that’s the much more popular version,” he explained. “While I like those kinds of printers, […] I think the big future is in store for powder printing.”

August 9, 2013

The cult of Apple

Filed under: Business, Media, Religion, Technology — Tags: , , — Nicholas @ 08:24

In Wired, Brett T. Robinson talks about the similarities of the “Apple cult” to religious beliefs:

Technology ads provide parables and proverbs for navigating the complexities of the new technological order. They instruct the consumer on how to live the “good life” in the technological age.

Like all advertising, Apple’s ads perform a vital educational function in consumer society. The advertisements are allegorical, rhetorical attempts to domesticate foreign and abstract concepts, making them accessible and attractive to everyday adherents.

In fact, they resemble medieval morality plays in their personification of good (Mac) and evil (PC). As such, the ads contain a moral — or, more explicitly, they propose a morality customized for the conditions of the age.

Media technology has acquired a moral status because it has become part of the natural order of things. Luddites, those who have sworn off new technologies, are the new heretics and illiterates. Technology is an absolute. There is no turning back or imagining a different social order. Challenge is acceptable as long as it remains within the confines of the technological order. Apple may challenge Microsoft. Samsung may challenge Apple. But the order must not be challenged.

The impact of digital culture, then, is epistemic; it insinuates a moral system based on its own internal logic.

[…]

In the Apple story, the brand cult began offline, with users meeting in real, physical locations to swap programs and ideas. Now, the Apple community is more diffuse, concentrated in online discussion groups and support forums. However, Apple product launches and conferences remain sacred pilgrimages where Apple fans can congregate, camp, and live together for days at a time to revel in the communal joy of witnessing the transcendent moment of the new product launch.

The reverence once reserved for holy relics and liturgy has reemerged in the technology subculture. The shared experience of living in a highly technological era provides a universal ground for a pluralistic society. There may be many different devices, but only one Internet.

Technology has become the new taken-for-granted order that requires our fidelity. Obedience to the new order is expressed in the communication rituals that take place every day in the use of computers, music players, and smartphones — devices that bind individuals together. From the farthest satellite to the nearest cellphone, the mystical body of electricity connects us all. Personal technology has become “the very atmosphere and medium” through which we mediate our daily lives.

Locking the (electronic) barn door

Filed under: Law, Media, Technology — Tags: , , , — Nicholas @ 08:03

The encrypted email service that was reportedly used by Edward Snowden just announced that it will be shutting down:

Today, Lavabit announced that it would shut down its encrypted email service rather than “become complicit in crimes against the American people.” Lavabit did not say what it had been asked to do, only that it was legally prohibited from sharing the events leading to its decision.

Lavabit was an email provider, apparently used by Edward Snowden along with other privacy sensitive users, with an avowed mission to offer an “e-mail service that never sacrifices privacy for profits” and promised to “only release private information if legally compelled by the courts in accordance with the United States Constitution.” It backed up this claim by encrypting all emails on Lavabit servers such that Lavabit did not have the ability to access a user’s email (Lavabit’s white paper), at least without that user’s passphrase, which the email provider did not store.

Given the impressive powers of the government to obtain emails and records from service providers, both with and without legal authority, it is encouraging to see service providers take steps to limit their ability to access user data, as Lavabit had done.

[…]

Lavabit’s post indicates that there was a gag order, and that there is an ongoing appeal before the Fourth Circuit. We call on the government and the courts to unseal enough of the docket to allow, at a minimum, the public to know the legal authority asserted, both for the gag and the substance, and give Lavabit the breathing room to participate in the vibrant and critical public debates on the extent of email privacy in an age of warrantless bulk surveillance by the NSA.

August 8, 2013

A home-made Gauss gun

Filed under: Technology, Weapons — Tags: , , — Nicholas @ 08:14

It may not be the most functional weapon in the world, but it does show that there might be a niche for this kind of development:

While it may only be able to shoot a few cans right now, we certainly wouldn’t want to be in front of [Jason]‘s fully automatic Gauss gun capable of firing 15 steel bolts from its magazine in less than two seconds.

The bolts are fired from the gun with a linear motor. [Jason] is using eight coils along the length of his barrel, each one controlled by an IGBT. These are powered by two 22 Volt 3600mAh LiPo battery packs.

As for the mechanical portion of the build, the bolts fired from this gun are actually 6.5mm nails, cut off and sharpened. These are chambered from a spring-loaded magazine, with each new bolt put into the breech with a small solenoid retracting for an instant.

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