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Showing 20 of 69 results by GeorgeH
May be useful for a password cracking setup.
I've been looking into that casually. Anything specific you have found that could be interesting?
Sorry, nothing here. I'd definitely look into it if I had one though. I'm sure there is a decent amount of FPGA password cracking information available.
Re: Offering Free Bitcoin Mining (1 BTM Each) (Post your address to receive)
For my entry, I'd like to toss a bone to the ReactOS project.
I'm not involved, but I like the project. Thanks for any donations!
1PWiRE16PJsEuax2Yr7EuK93q3ueDB58AE
I'm not involved, but I like the project. Thanks for any donations!
1PWiRE16PJsEuax2Yr7EuK93q3ueDB58AE
Re: 1BTC Bounty: mass-produced programmable USB stick w/ [O]LED display+button
If you're interested in having such a device designed, I'd be interested in contracting.
Primary plan of attack would be a PIC32 doing USB HID+MSD with an EEPROM. Nothing revolutionary.
The PIC32 toolchain isn't entirely open, but the compiler is open and all required tools are cross platform. The PicKit3 programmer is available for $45. Clones exist if you want to save money. (IMHO they're not worth the trouble, but it's your prerogative.)
The parts list would look something like this:
uC: http://www.digikey.com/product-detail/en/PIC32MX230F064B-I%2FML/PIC32MX230F064B-I%2FML-ND/3046648
Display: http://www.digikey.com/product-detail/en/NHD-12232KZ-NSW-BBW-P/NHD-12232KZ-NSW-BBW-P-ND/1701265
Serial EEPROM (multiple for redundancy?)
Buttons: http://www.digikey.com/product-detail/en/MJTP1138BTR/679-2415-1-ND/2344168 (A shorter button would be used if you want keycaps)
USB connector: http://www.digikey.com/product-detail/en/48037-0001/WM17117-ND/857603
Estimated BOM price is about $25 with PCBs.
Potential issues:
Security. Are you looking for encryption and authentication? How about hardware security?
Size. The display is going to make a big difference here. What content do you want to display?
Case. I can 3d print cases, but they're neither as pretty nor as durable as injection molded cases.
Write only. A tamper proof write only setting would take some extra effort. How permanent does this need to be?
What's your desired capacity?
Software. USB software is generally painful to develop.
E: \/ John, that post made me search around for an upvote button. Looks like a great product!
Primary plan of attack would be a PIC32 doing USB HID+MSD with an EEPROM. Nothing revolutionary.
The PIC32 toolchain isn't entirely open, but the compiler is open and all required tools are cross platform. The PicKit3 programmer is available for $45. Clones exist if you want to save money. (IMHO they're not worth the trouble, but it's your prerogative.)
The parts list would look something like this:
uC: http://www.digikey.com/product-detail/en/PIC32MX230F064B-I%2FML/PIC32MX230F064B-I%2FML-ND/3046648
Display: http://www.digikey.com/product-detail/en/NHD-12232KZ-NSW-BBW-P/NHD-12232KZ-NSW-BBW-P-ND/1701265
Serial EEPROM (multiple for redundancy?)
Buttons: http://www.digikey.com/product-detail/en/MJTP1138BTR/679-2415-1-ND/2344168 (A shorter button would be used if you want keycaps)
USB connector: http://www.digikey.com/product-detail/en/48037-0001/WM17117-ND/857603
Estimated BOM price is about $25 with PCBs.
Potential issues:
Security. Are you looking for encryption and authentication? How about hardware security?
Size. The display is going to make a big difference here. What content do you want to display?
Case. I can 3d print cases, but they're neither as pretty nor as durable as injection molded cases.
Write only. A tamper proof write only setting would take some extra effort. How permanent does this need to be?
What's your desired capacity?
Software. USB software is generally painful to develop.
E: \/ John, that post made me search around for an upvote button. Looks like a great product!
A picture is worth a thousand words 
So the first customer having the balls to tear apart a machine that makes 10k's of $ at month is a chinese... They will dominate us soon.Any guesses on the size of those fans? I'd be preemptively buying aftermarket GELIDs.
As long as you have the proper power supply connections (you should) and a motherboard with 2+ PCI Express slots (which yours has), the hardware angle will be simple - plug both cards in, attach auxiliary power, turn on pc!
Every OS I know of should be perfectly fine with this configuration.
Every OS I know of should be perfectly fine with this configuration.
Hi, welcome to the community! Just a quick word of warning - make sure you keep your laptop cool if you're going to mine with it! I made the mistake of failing to clean one of my computers and it subsequently died after a couple weeks of bitcoin mining. If you care about your laptop, just be sure to clean it regularly - mining bitcoins puts a huge amount of huge stress on a system; cooling is the key to keeping it safe!
The drivers aren't bad - why people still say that is likely because the installer looked like crap. It still looks bad, and there are plenty of issues installing drivers for older ATi hardware, but current AMD videocards tend to work well...though there are sometimes still installer problems 
People equate driver tweaking UI == driver
People equate driver tweaking UI == driver
I always hear horror stories about people having to go through a long and pain-in-the-neck process just to get the drivers installed correctly, not to mention bugs such as the cursor corruption and having idle clocks so low the computer crashes. Not to mention the few times I've used computers with ATI cards there were huge problems with even simple things like video playback.
If none of this has happened to you then hey, congrats. Maybe those were just isolated incidents. I do think they put more effort into their cards than their software though.
2 days ago i got a Sapphire HD5770, 1GB. Downloaded latest Catalyst and Stream 2.1, installed both, reboot: that's all.
Everything is working: h264 acceleration, mining, gaming, multimonitor (the card is coupled with an nVidia 9400gt) without any issue at all.
Windows 7 x64 here.
What's your average hashrate? I've got the same setup, but with Stream 2.2, and I'm getting ~315 mhash/s (as opposed to ~300mhash/s with Stream 2.3)
EDIT: Mirror for Stream SDK 2.2 for Windows 7 x64: http://www.megaupload.com/?d=E7FU5U2E
Thanks for the tips given here; I downgraded to stream SDK 2.2 and my hash rate jumped ~30 mhash/s to ~340mhash/s average.
A note to anyone else trying this; from SDK 2.3 to 2.2, your device numbers may change. I ended up with my CPU as device 0, which was previously my 5870.
It's possible that the solder on some components came loose when you were overclocking, but the solder has now reflowed.
If it happens again (and if you've got some guts), you can attempt to reflow the board using a toaster oven.
A note to anyone else trying this; from SDK 2.3 to 2.2, your device numbers may change. I ended up with my CPU as device 0, which was previously my 5870.
Looks like I damaged the card.
Now this is weird. Looks like the card has "healed itself" today while I was at work, there's no trace of the problems any more. Bizarre, but I'm not complaining. It's possible that the solder on some components came loose when you were overclocking, but the solder has now reflowed.
If it happens again (and if you've got some guts), you can attempt to reflow the board using a toaster oven.
my PhenomII X3 gets ~7800+khash/s already on jgarziks cpu-4way, or ultrasofts cpu-miner,
an X6 should get about twice as much.
an X6 should get about twice as much.
I'm running an X6 1090T BE, not overclocked and can confirm that I get ~17500 khash/s.
Are you running with the 4way switch? I have the same proc, and I'm getting ~20khash/s with pop's cpu miner.
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I will buy any quantity of bitcoins at the rate of .27 USD/BTC. Rate is negotiable, as I understand this is a new payment processor for most people. However, I believe once you've tried it, you'll really like it!