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User: Ford+Prefect

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  1. Re:When the Big Appliance in the sky calls on Interviews: Ask Blendtec Founder Tom Dickson What Won't Blend? · · Score: 3, Informative

    Cremated remains are already run through a cremulator, to reduce obvious-looking chunks of bone into a fine powder.

    "The remains are raked into a steel bin at the bottom of the cremator to cool, before being transferred into a machine called a cremulator, which contains steel balls that grind down the remains into a fine ash. [...] The cremulator may sound callous, but breaking down the remains is important because if you are going to have a scattering it means the remains can be dispersed as a fine ash rather than as bones, which is less distressing for the family."

    A blender might also do the job.

  2. Re:Arduino, AVR, RPi, Beaglebone on Ask Slashdot: Best Electronics Prototyping Platform? · · Score: 5, Informative

    I agree. Get an Arduino Uno at first and then you'll start to get a sense of what direction you want to move in from there.

    Agreed also. I started off with an Arduino nearly two years ago, and learned a lot of electronics and C/C++ building a camera timelapse gadget. (Videos here!)

    The community is definitely incredibly helpful, and if you're trying to do something there's a good chance someone's done aspects of it already. Plus the limited platform means it's difficult to get too sidetracked, and you pretty much have to build things in an efficient manner. It's built over that pretty standard AVR stuff too, so implementing your own Arduino-alike hardware is frighteningly simple.

    The ecosystem of Arduino shields is pretty amazing, but often a bit on the expensive and unwieldy side - for example, paying a fair amount for WiFi when an Arduino can barely handle a single connection, or full-colour backlit LCDs when the thing has almost no RAM - at some point you're going to have to make the leap to a Raspberry Pi or similar if projects are heading that way. I built a ridiculous time-travelling radio around a Pi, using some pretty standard UNIXy stuff which would have been impossible on an Arduino.

    On the other hand, I've seen many learning projects built with Raspberry Pis which would be far better suited to Arduinos - the Arduino has no real operating system, just the (tiny) bootloader and the standard libraries that get linked in, so it's extremely difficult to break a working, embedded setup. My timelapse gadget? Ideal. Starts almost instantly, has no easy-to-corrupt storage - think of the Arduino as programmable electronics glue. Whereas the Pi is more like software glue - if you need a tiny UNIX box doing software-type stuff, potentially interfacing with the real world, then the Pi and friends win hands-down.

  3. Re:Tip on Trojanized SSH Daemon In the Wild, Sending Passwords To Iceland · · Score: 4, Funny

    I will ALWAYS find your rootkit. This is because you're trapped in a VM, and I can always checksum the files from another uncompromised system (LiveCD / USB).

    This is, of course, assuming that you yourself are not running on another compromised virtual machine.

    (There was one hack I was involved in where an investigator tried to get clever and started calculating MD5 checksums with a universal Turing machine operated using pencil and paper. Fortunately, I'd already trojaned base logic itself and managed to subvert alphanumeric characters to return the 'correct' values. Hacking the logical representations of arabic numerals? Now that's pretty advanced stuff. But then, there's always the worry that my own consciousness is running on something other than what I think is my own brain...)

  4. Re:Title inaccurate. on Secret UK Uranium Components Plant Closed Over Safety Fears · · Score: 1

    Arses. Working Secret Nuclear Bunker photos link. Oops!

  5. Re:Title inaccurate. on Secret UK Uranium Components Plant Closed Over Safety Fears · · Score: 2

    Unless that's the point - now we discussed it at least twice and people will think "Oh, I'll go and find that"...

    I've no idea as to the authenticity of much of the contents, but the whole place is filled with faintly creepy signs. The near-total absence of staff, the honesty-boxes for any kind of payment and the (non-functional?) security cameras all over the place, it's all very much in keeping with the creepily humorous 'Secret Nuclear Bunker' name. At least, I assume it's meant to be funny.

    (I took loads of photos there a bit over a year ago. I didn't pay the £5 photography fee; I was kind of glad to get out of the place. And I'm someone who explores dodgy forgotten locations for fun...)

  6. Re:Oh thank god... on NASA and CSA Begin Testing Satellite Refueling On the ISS · · Score: 1

    Have they launched anything? What have they done? I ask this without intending any disrespect -- but if they've got some accomplishments under their belt then they need a better PR machine.

    Note to Canadians - try writing the word 'Canada' in even larger letters on vital components of NASA's manned space programme.

  7. How radar observations of asteroids work on Views of the Asteroid Toutatis, From Earth As Well As Close-Up · · Score: 1

    The radar images are great, but they're definitely not conventional photos - the viewpoint-from-Earth is actually from the 'top' of the image, looking down. They're constructed from a combination of distance measurements and Doppler shifts, the latter thanks to the rotation of the asteroid.

    So basically it means a single transmitter and single receiver can figure out a two-dimensional image from a vast distance - and it's nice that these images quite closely match the conventional, optical images taken by the Chang'e probe!

  8. Compare and contrast on Video Tour of the International Space Station · · Score: 5, Informative

    IMAX (!) video from inside the Russian Mir space station. Dark, cramped and most likely very smelly - still an incredible achievement. International Space Station? Some kind of progress!

  9. Re:Still sceptical on Electrical Grid Hum Used To Time Locate Any Digital Recording · · Score: 5, Interesting

    At the utterly fascinating Georgetown Steam Plant Museum in Seattle, I learned of the difficulties in getting a (somewhat elderly) generator in sync with the grid. Apparently, get it right and all the other power stations will pull it into the exact frequency - get it wrong, and you'd snap the turbine shaft.

    As for the mains hum, in an undergraduate experiment at Jodrell Bank Radio Observatory, I detected intelligent life - on Earth, unfortunately. While running an FFT on a recording of a pulsar, we not only uncovered the spinning neutron star's rotation - we also discovered some not-exactly-mysterious peaks at multiples of 50Hz.

  10. Re:By Canada on North Korea's Satellite Is Out of Control · · Score: 3, Funny

    We're just clueless pikers and you geniuses north of us are obviously our superiors in every way. Thank god for Canada, or we'd all be lost. It's called throwing you a bone, the least you could do is show gratitude instead of acting like you lot actually did something, because you didn't.

    For failing to comprehend the True Cosmological Glory that is Canada, you are hereby sentenced to be (appropriately enough) torn limb from limb by the newest Canadian space-robot, Dextre the Magnificent.

  11. Re:Yes but... on Minecraft Ported To the Raspberry Pi · · Score: 3, Informative

    so far the best way is to edit code/configs/scripts on a local desktop/laptop then ftp it them over, cause even basic text editors bring the PI to a slow crawl.

    If you're running 'pico', you're getting 'nano' instead, and it's nano's syntax highlighting that's the problem. Switch it off with Meta-Y and the editor becomes positively speedy. I'm SSH'ed into a Pi right now, and for basic shell stuff it's pretty indistinguishable from any other machine. There's probably something up if it's gratuitously slow.

    (I'm on an up-to-date Raspbian, and I've overclocked things slightly. Software has improved loads the past few months!)

    I was gonna use the PI as a network storage device, chaining 3 or 4 external usb hard drives to it via powered usb hub, and it worked and all but the PI is soooooo slow the transfer rate would dip down to 5K-10K/sec over LAN when trying to save a large file or copy a large file from it to desktop.

    USB support is now merely 'not very good', while it used to be 'downright terrible'. I get ~3MB/s SCP-ing a large file to the Pi's (slow) SD card, so network performance shouldn't be an issue. Try again with recently updated firmware? Although it's unlikely to make a terribly good NAS anyway, with both disks and ethernet hanging off a slow USB connection...

  12. Re:Hmm on Minecraft Ported To the Raspberry Pi · · Score: 2

    It's apparently a port of Minecraft Pocket Edition, which is already on Android and iOS. No idea as to the programming language, but I fully imagine it's something with less of a footprint than a full-sized JVM.

  13. Re:Nostalgia Sorta on Minecraft Ported To the Raspberry Pi · · Score: 5, Informative

    Some time last year I'd vaguely heard about the Raspberry Pi, and how it was a super-cheap, super-basic ARM board. I'd really not been paying much attention when I happened to click on a YouTube link apparently showing the Raspberry Pi running 'Quake'.

    That's nice, I thought - expecting a 320x200 software-rendered Quake 1 running at an abysmal framerate, in a let's-try-one-up-from-Doom kind of way.

    Shitting heck, it was Quake 3 - running at an anti-aliased 1080p at quite a speed.

    Having owned multiple, expensive generations of PCs incapable of that kind of graphical performance - nostalgia's awful. Can't they just run Doom and be happy? Stop this relentless, amazing progress, please!

  14. Re:You get 1080p video... on On Demo, a $25 1080p Camera Module For Raspberry Pi · · Score: 1

    The point is that the Raspberry Pi is much too slow to do anything with the video except storing it, viewing it unmodified or sending it somewhere else.

    ... and the MSL Curiosity Mars rover is positively bristling with different cameras, and a 200MHz processor behind it all.

    The Raspberry Pi definitely isn't speedy, but all kinds of things are possible with it. Where an Arduino has difficulty doing any image processing at all, a Pi will run OpenCV and do plenty of things deeply appropriate to robotics and assorted other hackery.

  15. Re:Thanks, Facebook. on Facebook Switching To HTTPS By Default · · Score: 1

    Zuckerborg would be a hero in my book if he would redirect all of facebook to /dev/null.

    Actually, he'd probably get it the wrong way round and redirect that howling infinite void of /dev/null out to the entire populace of Facebook - instantly terminating, unending nothingness piped through smartphones and laptops and desktop computers, straight into the uncomprehending, newly-obliterated minds of the social networking masses.

    Still, everyone would find it an improvement over the previous service.

  16. Re:darn! on Roaming Robot May Explore Mysterious Moon Caverns · · Score: 5, Informative
  17. Re:The new normal on Man Arrested At Oakland Airport For Ornate Watch · · Score: 1

    Greetings from Europe, where I hope we finally stop listening to crazy people over the big pond.

    Greetings from a European who has been shouted at by Polish military police for taking photos of their vital security apparatus!

    (Also, some of the locations I've been caught in may not have been public places...)

  18. Re:The new normal on Man Arrested At Oakland Airport For Ornate Watch · · Score: 4, Interesting

    I had this device discovered in my backpack during a TSA extra-gropey our-explosives-detector-machine-has-beeped secondary inspection. It was powered down, but it actually is a hacked-together, home-made gadget for triggering an external unit.

    The TSA agents responsible were grumbling about having to work next to the ineffectual backscatter X-ray scanners (I'd opted out), and were interested in what camera equipment I had and what I'd recommend for a beginner. Many of the agents are human, and sick to death of the security theatre they have to work with.

    (As a photographer who likes taking pictures of weird bits of crumbling infrastructure, I've had plenty of run-ins with security guards and the like. Oddly, I've never been arrested.)

  19. Re:Where is the arm? on Curiosity Snaps 'Arm's Length' Self Portrait · · Score: 2

    Wondering what else I could do with the stuff I assembled in Hugin, I put together a quick interactive version of the panorama. Requires a recent browser with WebGL support - uses the open-source Pannellum as the viewer.

  20. Re:Where is the arm? on Curiosity Snaps 'Arm's Length' Self Portrait · · Score: 4, Interesting

    You can see shadows from the turret on the end of the arm in a couple of the raw images. Whoever planned the arm manoeuvres did an incredible job - not only did the arm itself almost completely disappear in final stitched versions, the images have very little parallax despite the arm very much not being a proper panoramic camera mount.

    Of note - there was a second set of images taken - very similar to the first, but with a small horizontal offset. Likely result? 3D versions of the panorama!

    The only thing I want now is, perhaps in a year or so, a full 360-degrees spherical panorama of the rover parked near some interesting cliffs or other geography. Go on, NASA - do it! ;-)

  21. Re:Where is the arm? on Curiosity Snaps 'Arm's Length' Self Portrait · · Score: 5, Informative

    Top-left here.

    (Of note - the raw images got released quite a few hours before the official stitched version did. So a bunch of amateurs including myself and others used various panorama-assembling software to assemble our own, unofficial stitched versions. Seeing Curiosity like this before pretty much everyone else was great...)

  22. Re:$85000 camera? on Camera Technique Captures New View of Space & Time · · Score: 1

    Handy!

    I wrote a slightly longer script to do the same (in PHP, stop laughing) to do some large-scale 'scanning' from public transit in Seattle. Firstly, I need a camera with a higher framerate (60fps isn't really enough) and secondly, I need to lock exposure, white balance and so on. But the very first attempt turned out quite well.

  23. Re:Packaging on Ask Slashdot: Transporting Computers By Cargo Ship? · · Score: 5, Funny

    Exactly. I ship expensive electronics (scientific equipment) by container ship all the time. It's not that big a deal.

    Actually, come to think of it, the only thing of mine that did get slightly damaged was an old Soviet microscope. Primarily because some idiot (i.e. me) forgot to bolt it into its carrying case, allowing it to rattle around inside.

    (Good news - the heavy-duty Soviet engineering meant just the monocular head was very slightly bent. I hope I didn't damage the cargo ship, however...)

  24. Packaging on Ask Slashdot: Transporting Computers By Cargo Ship? · · Score: 5, Insightful

    Simple - put things into packaging approximating what they originally came in. Worked fine for me, with a range of computing hardware and an inkjet printer travelling from Europe to Washington State.

    (How do you think much of your computing stuff made its way from China to begin with?)

  25. ... Don't? on Ask Slashdot: Hackable Portable Music Player For Helicopters? · · Score: 3, Insightful

    As a tourist who's been on one or two small, sightseeing aircraft - can I suggest going without the music?

    Especially on a helicopter where the background noise is already quite phenomenal, going without some barely-audible music warbling away over the headset is hardly going to impair my experience. I'd much rather be looking out the windows (or absence thereof) and listening to what the pilot has to say...