Memory Card Torture Tests 236
saikatguha266 writes "BBC is reporting that five types of memory cards were dipped into cola, put through a washing machine, dunked in coffee, trampled by a skateboard, run over by a child's toy car, given to a six-year-old boy to destroy, smashed by a sledgehammer and nailed to a tree. It was still possible to retrieve photos from the xD and Smartmedia cards while the others didn't survive just the last two tests. "
Miss the old green slashdot? (Score:5, Informative)
The goggles... (Score:3, Funny)
Re:Miss the old green slashdot? (Score:2)
Re:Miss the old green slashdot? (Score:5, Funny)
Re:Miss the old green slashdot? (Score:2, Offtopic)
This results in Slashdot's usual poor, but passable green colour scheme.
Re:Miss the old green slashdot? (Score:2, Informative)
Re:Miss the old green slashdot? (Score:2)
Talk about real life experiments... (Score:5, Insightful)
Note that I did had a PS2 memory card go to the washing machine, and it worked like a charm afterwards. Thank God, I was not going to start FF7 all over again
Re:Talk about real life experiments... (Score:5, Interesting)
Re:Talk about real life experiments... (Score:3, Informative)
Re:Talk about real life experiments... (Score:5, Informative)
ok, you would need a few tesla, but the point is that if you have moving electrons, you cant just say magnetic field cant do anything...
Re:Talk about real life experiments... (Score:5, Informative)
So... as you can see, with a strong enough electric field, you may surely be able to move the charge across the barriers (e.g. break-through of the insulation or maybe tunneling of the electrons when you skew the potentials alot).
Now the magnetic thing:
Because the electrons in the floating gate move (they must do that in every case because of quantum uncertainty, but the greater effect here is the temperature movement!), they have a speed and as you may know, moving electric charges in magnetic fields feel the lorentz force... BUT this force does not change the energy of the particles, i.e. they do not get faster when one applies a magnetic field. So, yes, maybe there're weird changes in the bandgap. I don't know. Try it out, would be a nice experiment.
Post a link to a graph here that shows the total number bit errors over magnetic field strength
Static RAM mainly consists of two MOS inverter structures wired together on the chip to form a flip-flop. Static RAM needs a small bit of current (because of inevitable leakage currents) to keep it's state.
At least, that's how I read it some time ago for a seminar in the semiconductor book from the creator of these devices (S.M. Sze).
Re:Talk about real life experiments... (Score:5, Informative)
When you move though a magnetic field, that induces a voltage which could mess up the memory card. That is, don't bring your camera to a MRI machine (Nuclear Magnetic Resonance describes it better but people freaked out about the word "Nuclear"!)
It is not the magnetic field that does the damage. It is always the rate of change of the magnetic field that is the problem (its gradient). This is how power plants make the electrons flow from the wall socket :)
Re:Talk about real life experiments... (Score:5, Funny)
Re:Talk about real life experiments... (Score:3, Insightful)
Real life experiments indeed (Score:2)
Contrary to high radiation and strong magnetic fields these are Real Life situations.
Re:Real life experiments indeed (Score:2, Insightful)
And there are x-ray scanners for the radiation stuff... speakers for the magnetic fields... etc
Re:Real life experiments indeed (Score:3, Informative)
X-ray scanners are quite weak and will do nothing. You get more problems with the background radiation which can be more ionizing to RAM. Things like muons (heavy electrons) can flip a gate or two if lucky. X-ray will do nothing. At least at the levels that people survive.
As to magnetic fields, well, check out the MRI machines. Those have a huge magnetic field and there is the ramp (magnetic field getting chan
Re:Talk about real life experiments... (Score:2, Interesting)
The one-nail test isn't quite enough though. It could be luck that saves a memory card from a puncture. Potentially destructive tests need to be repeated methodically.
The Passion of the Memory Card (Score:3, Funny)
Re:Talk about real life experiments... (Score:2)
Hmm (Score:3, Funny)
real lifesaver... (Score:5, Funny)
The number of times i've accidently nailed my high-tech electronics to a tree... anything that survives that most common of IT mishaps will be a real lifesaver.
... okay. (Score:5, Funny)
Re:... okay. (Score:2)
What if... (Score:2, Insightful)
Re:What if... (Score:2)
You have yet to explore the many possible ways to destroy an electronic device.
Re:What if... (Score:2)
Re:What if... (Score:4, Funny)
You know, a normal person would just delete the files.
Cool! (Score:3, Funny)
Re:Cool! (Score:5, Funny)
Re:Cool! (Score:2)
Re:Cool! (Score:2)
Are they really representative (Score:5, Informative)
Re:Are they really representative (Score:5, Interesting)
Re:Are they really representative (Score:5, Interesting)
is this a feature or a bug? (Score:5, Funny)
A pretty pointless experiment.... (Score:5, Interesting)
So.... I think the test was not carried out correctly and scientifically......
Re:A pretty pointless experiment.... (Score:2)
Obligatory coca cola myth debunking (Score:2, Interesting)
There.
Re:A pretty pointless experiment.... (Score:5, Interesting)
I assume the actual article - the BBC's is only an abstract of an article in a UK digital photography magazine - contains more detailed explanations of what the tests entail, for instance at which temperature the cards were washed. The BBC says the cards were "boiled", so that should mean they're washed at 90 - and they survived, which kind of makes any further testing at lower temperatures superfluous. That said, repeated washing might have been interesting as it's somewhat likely the cards would die at some point. However, again, while this might be interesting in a scientific test, it doesn't have a lot of real life value: you are fairly likely to accidently wash one of your flash cards at some point, you're unlikely to do it twice, and increasingly unlikely to do it more often. Unless you're not so smart.
Hammering is a combination of mechanical stress and vibration...
I guess it is. But maybe the just presupposed that on the one hand mechanical vibrations don't do anything to a medium that doesn't have any moving parts (probably a reasonable presupposition, but I guess you ought to test it), but more likely and very reasonable is that they thought that the "mechanical stress" part of the "hammering with a slege hammer" action is kind of more significant. I doubt a typical owner of a camera can create much more mechanical stress than with a sledge hammer...
So in conclusion, while you're right, they could have been more diligent, the test is still quite informative as it is. It's good to know the cards are that rugged.
Re:A pretty pointless experiment.... (Score:2)
That could be touh, as the washing machine would be turning a solid block of ice...
Smartmedia cards not indestructable (Score:3, Interesting)
Usurper_ii
Re:Smartmedia cards not indestructable (Score:2)
Re:Smartmedia cards not indestructable (Score:5, Informative)
Note that in the Tungsten T3 only 1 out of 7 tested cards actually survived the ordeal! Of course, this particular test isn't scientific, but it is based on real user feedback really using them for real things, so it's probably worth a read.
Re:Smartmedia cards not indestructable (Score:3, Informative)
http://www.palminfocenter.com/view_story.asp?ID=6
And in other news... (Score:2, Insightful)
Whats the point of all this destructive testing? Do you really need your media to be THAT tough? (with the obvious exception of military applications but they can afford to pay for that.)
Re:And in other news... (Score:2, Funny)
Memory cards melt around 9,980 degrees Fahrenheit [doe.gov].
Wait--what? Memory cards aren't made of neutronium?
Oh, sorry, nevermind.
Re:And in other news... (Score:3, Insightful)
It's simple my good fellow.
They call it "soft news". The article writes itself, all you need to do is apply some stupid practices to every day items.
Human interest programs do this all the time, testing washing detergents on household floors or pets to see what will happen. It's a handy way for second rate journalists to churn something out and meet a quota. It's also handy marketing fodder.
It's not News for Nerds, or even Stuff that Matters, it's jus
Re:And in other news... (Score:2)
Some goes to washing: Yes, you should check your pockets, but you could miss a card.
nailing is idotic, and i dont unterstand what kind of stress a RC car should provide..
But i would be REALLY interested in a torture test like 100 read write cycles, 48h at 70degrees in a climate chamber, repeat for a year to test how good longterm reliance really is...
Re:And in other news... (Score:2)
Because these are the things that happen when have a family. It's Saturday, the kids are outside playing, and they see something really funny, like a baby squirrel trying to raid a birdfeeder. You run upstairs, grab your camera and try and take some pictures to keep the kids happy. You take a couple of photographs or make
Bad news or good news for printing services? (Score:5, Insightful)
My parents have about 50 baby photo's of me. I have about 2000 digital baby photo's of my daughter. However, if I am lucky 25 of those are really worthy of printing. If 2 out of 10 digital pictures really make it to actual print, I consider that a great deal. I would say that translates to booming business for the printing services.
Re:Bad news or good news for printing services? (Score:3, Insightful)
You don't have to "Get lucky" anymore to get a good shot! This is truly nice. Plus there's tons of places that are doing digital processing and they'll even mail you the photos. I just used ofoto.com and was impressed with th
Re:Bad news or good news for printing services? (Score:2)
Re:Bad news or good news for printing services? (Score:2)
Seems cheaper to me, e
Re:Bad news or good news for printing services? (Score:2)
And you get the warm fuzzy feeling of supporting a terrible company with shady business practices.
Yes (Score:3, Informative)
Paper Shredder (Score:3, Funny)
Re:Paper Shredder (Score:3, Insightful)
Smartmedia still fragile (Score:5, Interesting)
I've been using CompactFlash for a long time, and have yet to have a failure. I have everything from 16M cards (used to carry files around) to 1GB cards (hundreds of photos, filled only on vacation). I don't know any of my friends with CF that have ever had a card fail, though a few of them have had filesystem corruption (I blame that mostly on the devices, not the card).
Re:Smartmedia still fragile (Score:2)
Re:Smartmedia still fragile (Score:2)
Re:Smartmedia still fragile (Score:2)
Microwave? (Score:4, Interesting)
Re:Microwave? (Score:4, Funny)
Re:Microwave? (Score:2)
Re: (Score:2)
Washing your memory card (Score:5, Interesting)
DB26
Re:Washing your memory card (Score:2)
Normally, to avoid liability, companies only allow their customer service reps to read from a script rather than to suggest last-ditch things that might work.
Canon gets an A+ for customer service here.
Can't wait... (Score:5, Funny)
all lies: not indestructable... (Score:5, Funny)
Install a small httpd server on flash card and get it \.ed.
For an extra five (5) points, install Java (Sun) at the same time.
Astonishing? (Score:3, Insightful)
Still, those two cards are a bit out of style, since SM is REALLY old, and xDs are only used by digital cameras made by Fuji and Olympus, so I dont think they will find a great audience.
CEO testing? (Score:5, Funny)
That's the test I want to see: Can it survive a week at home with a mining company CEO?
The same kind of CEO who's password was always "password"....
Thats a relief! (Score:5, Funny)
This reminds me... (Score:5, Funny)
One guy wrote in saying he had got fed of up how his friend was always boasting about his Amiga 500 and how it was vastly superior to any other machine on the planet, especially this individual's ZX81 Spectrum. So convinced was he, he proposed a test. He offered the letter-writer his Amiga 500 for free if he could come up with one test, any test of his choice, where the ZX81 outperformed the Amiga.
The Speccy-owner, sat down, had a think, realised what to do and called his friend over with his Amiga for the test to begin. The friend arrived, and was summoned to the back garden. The Speccy-owner took his ZX81 frisbee-style and flung it across the garden, landing it perfectly in a compost heap.
The Amiga owner stared at him, spun around with his Amiga, tried throwing it, fell over under the weight, the machine smashing into several pieces. The speccy owner picked up, cleaned off and plugged in his ZX81, and was playing Manic Miner in minutes. The Amiga owner was told to take his trash and go home, which he did, crying...
When it comes to destruction tests, you have to ask "what's the point?". My media cards are normally well protected inside cameras or PCs and are unlikely to be dipped in cola or nailed to trees. However, it's always interesting to see how things work outside of the environment for which they were designed, just like that ZX81 and Amiga 500.
Re:This reminds me... (Score:5, Funny)
Even if you don't have children sometimes your visitors will have them.
A friend of mine kept work and backups on 5.25" floppies with red and green sleeves. One day she found all her work and backups cut into festive shapes and hanging from the Christmas tree.
Don't assume you know what to expect.
2000G's (Score:2)
That's probably the sledgehammer test.
Re:2000G's (Score:2)
Lets see... 2000g = 19.6Km/s/s acceleration. So imagine car travelling at 19.6Km/s (43843.951 miles per hour) and braking to a stop within one second. But considering that these CF cards only weigh probably < 50 grams, the actual forces and energies involved would not be nearly so great.
Missed a couple of tests... (Score:5, Interesting)
shuffle your feet thru carpet with nylon footwear and pick up a memory card (in Minnesota in February).
Have my cat determine the memory card is alive and subsequently attack the memory card
Have a dog carry the memory card in it's mouth for a couple of hours; then bury the memory card in the back yard.
How to destroy a Compact Flash card (Score:5, Interesting)
Just insert the card the wrong way up into your card reader. Our Compact Flash card reader is not well keyed and allows this.
Instant card death on powerup
Um...the brands? (Score:4, Insightful)
Honey quick! Nail this memory card to the tree! (Score:3, Insightful)
And if you are going to drop it in water, use salty water. After all, there are those things called "sea" and "ocean" and people get their cameras splashed when they play near them. Probably no less often then they spill soda on them.
Oh, and when you precious memory card falls out of your pocket while you are crossing the street, there are going to be tons of toy cars running over it.
It's a Non-test (Score:2, Interesting)
Real tests would've included rewriting until the flash would die and counting the rewrites.
I think they didn't have enough real material to fill their papers (much of a recent syndrome).
Tree (Score:2, Funny)
Torture? Joking? (Score:3, Informative)
Tougher, realistic tests? (Score:2, Interesting)
Re:Tougher, realistic tests? (Score:2)
Sand shouldn't do anything, as there are no moving bits.
There is no reason not to fully seal CF cards, but the salt *could* corrode the contacts unless they are completely gold-plated.
2) Immersion under pressure (dropped in swimming pool)
There's no reason to have gas in the CF card, and hence the card should not be compressable.
3) Magnetic fields (accidentally taken for an MRI scan)
Unless you have a CompactFlash fetish and regularly store CF cards in
Sample size too small (Score:2)
Six year old? (Score:5, Funny)
Nail Tree Thing . . . (Score:4, Funny)
Now I'm going worry so much that I'll have problems sleeping, followed by curling up into the fetal position in a dark corner, rocking myself back and forth whispering "Rosbud," until they give me my Thorazine.
Depends (Score:3, Interesting)
Circuit boards are washed during manufacture in something closely resembling a dishwasher, using orange oil. Puting them through a home dish washer is nothing special.
More Tests (Score:3, Funny)
hand card over to TSA (Transportation Safety Administration) and ask them to "be careful -- it's fragile"
pass card over retail store checkout counter magnetic pad
microwave card for 10 secs
feed card to puppy (slather with peanut butter if necessary)
bury card in dust
Re:Of course they don't break when you want them t (Score:5, Funny)
Re:Of course they don't break when you want them t (Score:5, Informative)
It may have been the USB controller that was damaged. The way that these drives were designed was that the connector was attached directly to the circuit board, without anything else holding it in place. Or, perhaps it may have been the flash memory that was faulty, like in your circumstance.
Re:Oh no (Score:5, Funny)
Re:Oh no (Score:2)
I stuck in a spare magnitron I had laying around and it still works fine.
Re:Use Fuji digital cameras (Score:2, Funny)
Re:Use Fuji digital cameras (Score:3, Interesting)
xD-Picture Card was developed by Fujifilm and Olympus, and for years there's been evidence of SmartMedia phasing out of the market.
After reading a lot of reviews, I bought a FinePix A105 at a low price. While shopping around, however, I counted the xD format as a strike against the FinePix because xD is expensive and isn
Re:Use Fuji digital cameras (Score:2)
From what I've read the XD card is nothing but encapsulated smartmedia. The majority of a smartmedia card is unused/dead space/plastic
You can get an adapter to use with media readers for the compact flash slot (what I use) or you can even get one for the smartmedia slot - kinda cool but flimsy, its a smartmedia card with a pocket for the XD.
I love my Fuji 40i - I wish I could havea greater capacity though - uses Smartmedia. I've been thinking trying to hack an XD card into a
Re:I want a blow by blow! (Score:2, Funny)