Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror

Comment Re:Ok, I'm outta here (Score 1) 867

I do a lot of work with the gEDA tools (gschem for schematic capture, pcb for layout). Not quite as polished as the commercial packages, but free and open.

In particular, I like the fact that all the file formats are open as ASCII based. Very handy for tracking changes in designs.

http://www.geda-project.org/

Australia

Australian Icebreaker Tries To Get Through To Stranded Antarctic Research Ship 188

The shipload of researchers and tourists stuck in the Antarctic ice are still stuck. A Chinese icebreaker, the Xue Long, or Snow Dragon, has gotten tantalizingly close but was hampered by "unusually thick ice." Now, an Australian vessel, the Aurora Australis, will attempt to rescue the 74 people aboard the MV Akademik Shokalskiy.
Earth

Antarctic Climate Research Expedition Trapped In Sea Ice 209

First time accepted submitter Stinky Cheese Man writes "An Antarctic climate research expedition, led by climate researcher Chris Turney of the University of New South Wales, has become trapped in heavy ice near the coast of Antarctica. The captain has issued a distress call and three nearby icebreaker ships are on their way to the rescue. According to Turney's web site, the purpose of the expedition is 'to discover and communicate the environmental changes taking place in the south.'"

Submission + - ICANN working group seeks to kill WHOIS (computerworld.com.au)

angry tapir writes: An Internet Corporation for Assigned Names and Numbers (ICANN) working group is seeking public input on a successor to the current WHOIS system used to retrieve domain name information. The Expert Working Group on gTLD Directory Services (EWG) has issued a report that recommends a radical change from WHOIS, replacing the current system with a centralised data store maintained by a third party that would be responsible for authorising "requestors" who want to obtain domain information.

Submission + - Hacking and attacking automated homes (networkworld.com)

colinneagle writes: If you use the Z-Wave wireless protocol for home automation then you might prepare to have your warm, fuzzy, happiness bubble burst; there will be several presentations about attacking the automated house at the upcoming Las Vegas hackers' conferences Black Hat USA 2013 and Def Con 21. For example, CEDIA IT Task force member Bjorn Jensen said, "Today, I could scan for open ports on the Web used by a known control system, find them, get in and wreak havoc on somebody's home. I could turn off lights, mess with HVAC systems, blow speakers, unlock doors, disarm alarm systems and worse."

Among other things, the hacking Z-Wave synopsis adds, "Zigbee and Z-wave wireless communication protocols are the most common used RF technology in home automation systems...An open source implementation of the Z-wave protocol stack, openzwave, is available but it does not support the encryption part as of yet. Our talk will show how the Z-Wave protocol can be subjected to attacks."

Submission + - Proof mooted for Heisenberg's uncertainty principle (nature.com)

ananyo writes: Encapsulating the strangeness of quantum mechanics is a single mathematical expression. According to every undergraduate physics textbook, the uncertainty principle states that it is impossible to simultaneously know the exact position and momentum of a subatomic particle — the more precisely one knows the particle’s position at a given moment, the less precisely one can know the value of its momentum. But the original version of the principle, put forward by physicist Werner Heisenberg in 1927, couches quantum indeterminism in a different way — as a fundamental limit to how well a detector can measure quantum properties. Heisenberg offered no direct proof for this version of his principle. Now researchers say they have such a proof. If they're right, it would put the measurement aspect of the uncertainty principle on solid ground — something that researchers had started to question — but it would also suggest that quantum-encrypted messages can be transmitted securely.

Comment Bruce Schneiered (Score 3, Funny) 354

I just think it's awesome that Bruce Schneier got a nod in the TSA dictionary:

Bruce Schneiered: (V, ints) When a passenger uses logic in order to confound and perplex an officer into submission. Ex: “A TSA officer took my Swiss army knife, but let my scissors go. I then asked him wouldn’t it be more dangerous if I were to make my scissors into two blades, or to go into the bathroom on the secure side and sharpen my grandmother’s walking stick with one of the scissor blades into a terror spear. Then after I pointed out that all of our bodies contain a lot more than 3.4 ounces of liquids, the TSA guy got all pissed and asked me if I wanted to fly today. I totally Schneirered his ass.”

Comment Boom microscope (Score 1) 118

I have a boom microscope that I use for electronics work which is very popular with my kids for looking at bugs, etc. I got mine from amscope.com for something like $350.

I also have a biological style microscope which is higher power and lit from below. My kids didn't seem to have as much interest in this. Generally, one cell looks pretty much like another unless you really know what you're looking for.

Comment Re:SIP on Gingerbread (Score 1) 208

Just yesterday I was playing with this on my Nexus One which was recently upgraded to Gingerbread.

I signed up for an account with www.diamondcard.us (found them through the Ekiga web site). Pretty cheap (I had to put $15 down to setup the account), and I can confirm that it does work with the N1 on Gingerbread, at least over wifi.

I only tried one test call and there was noticeable latency over wifi. Certainly workable in a pinch, but not as good as normal cell service.

Comment Re:And this is news? (Score 4, Informative) 116

I knew somebody who blinked in around 95% of photos. Even a fake count-down didn't throw them off.

Actually, that's fairly common. Most camera's use a short pre-flash to adjust their light levels when you press the shutter button. This is followed a few milliseconds later by the actual flash used to take the picture. Some people with sensitive eyes will blink at the pre-flash and end up with their eyes closed in most flash pictures.

I used to have a Nikon DSLR camera that could be programmed to emit the pre-flash when a certain button was pressed. I'd hit the pre-flash button first, then take the actual picture (sans pre-flash) a few seconds later. Worked miracles for my wife who is a blinker.

My new camera (a newer Nikon DSLR) doesn't see to make people blink, so either it doesn't use a pre-flash, or it's so fast that there's no time for people to react.

Comment Re:Not really... (Score 1) 337

Agreed. I have a relatively inexpensive Instek scope that I use at home (GDS-820C), and it's a great tool. I use Tektronic scopes at work which are certainly nicer because of the much higher sampling rates, but the cheap scope handles 95% of what I need.

One word of caution; Instek (and I'm sure this is true of other cheap scope manufacturers) make some wild claims about handling very high frequency signals with these inexpensive scopes. For example, my scope claims to have 150MHz bandwidth and "25Gsa/s Sampling Rate for Repetitive Waveforms" on the product page. This is just marketing hype, don't believe it!

When comparing scopes, look at the actual sampling rate of the signals. My scope samples at 100 MHz, the Tektronic I use at work samples 10 times that fast. It makes a big difference when working with fast waveforms.

I'm not putting down the cheap scopes, you can pick up the model that I'm using new for around $1000. Just be aware that these inexpensive scopes are not great for looking at very fast signals. If you need speed, you will need to spend significantly more.

Slashdot Top Deals

The meta-Turing test counts a thing as intelligent if it seeks to devise and apply Turing tests to objects of its own creation. -- Lew Mammel, Jr.

Working...