What is Digg?49 Comments
- Nick2632, on 11/28/2007, -1/+28Yeah, it's almost like it's the same guy making the videos, but that wouldn't make sense would it?
- cyclopssmiley, on 11/28/2007, -4/+19Has anyone noticed in all videos like this, the guy has the same exact voice?
- theinept, on 11/28/2007, -2/+11I don't know specifically what's going on in the video because I don't have sound at work, but assuming it works the way I think it does, it's going to be a pretty crummy chiller. USB ports don't deliver more than 500mA of current. At 5V, that gives you a A 2.5W chiller. Wow... The cold side of the pelt in the video barely even had frost on it.
- inactive, on 11/28/2007, -0/+8I want to know how hot the bottom gets??
Flip it over and warm my coffee? - adraft, on 11/28/2007, -0/+7*****. OFF.
- Tyrghast, on 11/28/2007, -2/+9all this talk about whether it's practical, sensible, and what not are idiotic. It's a creative device made by a guy in his free time, and for that, I digg it.
- MrRadar, on 11/28/2007, -0/+6But how effective will a peltier be with only 500 ma to work with? Most of them require several amps to achieve pretty mediocre cooling*, so I can't imagine you'd cool much with such little current. Also, the design this guy in the video came up with is pretty bad for a few other reasons. As we all know hot air rises and cool air falls, but he puts the cooling side below the heating side of the peltier and also puts the heating side face-down on the table chocking off any convection that might form to cool it. And with the cooling side on the floor of his micro fridge and no fan to circulate the air it would take a long time to cool off the air in the fridge even if the peltier were given its max rated current. All in all I can't imagine this would be very effective at all, even as just a drink cooler.
*For large spaces of air, such as the insides of micro refrigerators; they work great for contact cooling applications such as CPU. - inactive, on 11/28/2007, -1/+6Actually,I like the creativity of it very much
- inactive, on 11/28/2007, -3/+8Peltier's will only pull the current given them... one of the nicer features. Plus, you can buy coolers like this all over the net... if you want to pay 40-50 bucks plus shipping.
- seanc6610, on 11/28/2007, -0/+5that voice haunts my dreams.
- inactive, on 11/28/2007, -0/+52.5W is dick all. you'd need pretty good insulation of the cooling chamber to retain the cold too. like those USB coffee warmers. Evar take one apart? I have. two resistors - thats all it is. puts out roughty 2.5W of heat which is nothing at all. definitely doesn't keep anything hot - even a thin bottomed metal cup in direct flat contact with the element.
heating is easier than cooling too. while this thing WILL work if you have a perfectly sealed cooling chamber, it will takes hours to drop by even a few degrees C - nullx42, on 11/28/2007, -0/+5Needs More Kipkay voice.
- inactive, on 11/28/2007, -2/+7this most likely uses at least 10 times less power then any portable hard drive...
So its not over using them... - inactive, on 11/28/2007, -0/+5why is it lame?
- inactive, on 11/28/2007, -0/+4Stickers my friend...
- etsa, on 11/28/2007, -0/+4Peltier device are scarily cool. I used it for overclocking.
$2 heat sink and peltier device is cheap.
anyone can get that in any good electronic stores. - scallon, on 11/28/2007, -2/+6where can i get one? *heads off to ebay/craigslist*
- BigBrother87, on 11/28/2007, -0/+4I don't think he's trying for a freezer, and if there's frost then it's cold enough to cool a drink. 2.5W is plenty.
- dezman2003, on 11/28/2007, -0/+3If he designed it properly the peltier would be on the top, you know because of the whole heat rises cold sinks deal. So if he put it together right you just might be able to heat your coffee from cold to piss warm.
- cyberwarriorx, on 11/29/2007, -0/+2100 mA initially. In order to use more, the usb device is supposed to request it with 500 mA being the maximum.
- g4blows, on 11/28/2007, -0/+2doesn't look like digg to me
- iNunchuk, on 11/28/2007, -1/+3http://usb.brando.com.hk/prod_detail.php?prod_id=0 ... --- $33 and its all yours.
- WhiteIce89, on 11/28/2007, -0/+2Most of all what good is a fridge that only works when your computer is turned on?
- tsalti, on 11/28/2007, -1/+3HACKED!
- inobla, on 11/28/2007, -1/+3Ok....as long as you don't consider blowing out the regulator on your USB port the same as ruining your computer.
- scottswan79, on 11/28/2007, -0/+1am i the only one who noticed the website he used for the background was digg
- PhrosTT, on 11/28/2007, -0/+1yes. because normal people noticed it was metacafe.
- dezman2003, on 11/28/2007, -0/+1You can't pull too much current, we aren't talking about a ***** 8 amp drill and your wall socket here. This is a controlled port in a computer.
- roffelmeh, on 11/28/2007, -1/+2No i can LOOK and FEEL cool while surfing teh internetz
- PhrosTT, on 11/28/2007, -0/+1the only benefit to usb over ac would be portability - which is retarded as it's huge and would rape your battery.
- krawkula, on 11/28/2007, -0/+1For just a little lower temperature you can attach a fan to blow off the hot side of the heatsink. The peltier effect causes 1 side to be hot, 1 side to be cold. The cooler the hot side is, the colder the cold side is. That and you could probably get a better effect if you found out the best materials for the peltier effect is and running the current through those.
- TrevorPace, on 11/28/2007, -1/+2Most computers (and definitely laptops) have it so that they control the amount of current being provided by the port. It's something like 100-200mA. In order to get more then that I believe there is a lengthy handshake that most go on between the device and the computer. But even then the computer won't provide a huge amount of power.
If he's running that on USB...than most likely it's not going to do damage to the computer. - dezman2003, on 11/28/2007, -2/+3The amount of power a usb device can use is limited by the motherboard. There isn't anyway you can "over use" a ***** usb port. I hate how people hear ***** from "their friend steve" and accept it as fact, even when it makes no sense at all.
- fanboydcs, on 11/28/2007, -13/+13such a bad idea, might even kill your laptop. Over using usb ports is not a good idea
- themastersb, on 11/28/2007, -1/+1I am proud to report that it works, but it takes about 10 minutes for it to warm up (cool down). Probably due to the small amount of power and the fact that I have no insulation around it.
- themastersb, on 11/28/2007, -1/+1I'm about to try this. I hope it works
- HydrogenOxide, on 11/28/2007, -0/+0Naw, Missle Launcher USB attachment ftw
- crossers, on 07/14/2008, -0/+0great idea! you must be very clever!
http://www.ocflex.com/
http://www.trgovinca.org
http://www.chasr.org/
- gforce4, on 11/30/2007, -0/+0this is a very clever idea, but be carefull you will ruin your computer
- a1lazydog, on 11/28/2007, -0/+0just wondering... couldn't you also use that thing to cool down your processor? Just add electricity then blam, you're cooling it down!
- danconia, on 11/28/2007, -3/+2How was he able to get graphics on it? Am I missing something?
- inobla, on 11/28/2007, -2/+1"this most likely" ... "So its not"
Sorry, that's not valid reasoning. - cyclopssmiley, on 11/28/2007, -3/+2touché
- Popeiler, on 11/28/2007, -8/+7I agree with fanboy. USB can only supply so much current. Pulling too much will probably overload the USB controller and cause it to shut off or destabilize the computer. Unless some sort of a constant current circuit or a current limiter is added, I would highly recommend against connecting anything directly to a computer's USB port.
- travbrack, on 11/28/2007, -8/+6Lame
Also, you're an idiot if you think doing this will ruin your computer - LUCCHINA, on 11/28/2007, -6/+4I really like your ideas ! Always very clever !
- cyclopssmiley, on 11/28/2007, -5/+2touché
- inactive, on 11/28/2007, -7/+2wow 2nd best use for a usb port, first is to charge an ipod
- hmmdar, on 11/28/2007, -9/+2really good idea, but needs a limiting device on the usb cable so it wont draw too much power, or in case of a short.
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