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26 items tagged "david"
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5:00
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Hack a Day
No matter how easy it is to throw a piece of metal or plastic onto a tool and start making chips, the price of materials does add up. [rawkstar320] has been using machinable wax – a very hard wax that is up to the task of being cut with tools spinning at thousands of RPM [...]
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14:01
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Hack a Day
[David] is serving up files on his home network thanks to this Frankenstein’s monster of a Network Attached Storage device. It looks like he raided all the good bits from his parts bin to bring it all together. The case is a tin box which may have been for a card/board game or some holiday [...]
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9:04
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Hack a Day
This one might be an oldie, but it’s certainly a goodie. Way back in 2005, [David] and [Charles] needed a project for one of their engineering courses. With so many loose resistors scattered over the lab, they decided to build an automated resistor sorter (PDF warning) to separate these resistors and put resistors of the same value [...]
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9:59
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SecDocs
Authors:
David Hulton Tags:
FPGA Event:
Chaos Communication Congress 21th (21C3) 2004 Abstract: FPGAs (Field Programmable Gate Arrays) are slowly becoming more and more advanced and practical as high-speed computing platforms. In this talk, David will provide an in-depth introduction into the guts and capabilities of modern day FPGAs and show how you can take your current algorithms and efficiently convert them to gate logic and run them on hardware. This presentation will also introduce a set of open source cores (jawn v1.0) that will implement the basic functionality of john the ripper on FPGAs and allow you to crack password hashes as fast as 100+ PCs using FPGA PCMCIA cards on your laptop. Have you ever written an algorithm or a crypto cracker and wondered how fast it would run if you implemented it in hardware circuits with your bits flowing as fast as the electrons can move? What if you could put all of your algorithm's logic onto a specialized processor that does all of the work internally and just spits out an answer when it's done? It isn't as difficult as you think, and the chips are only getting faster and faster. FPGAs have many unique properties that can be exploited by a wide range of algorithms. This talk will release a new tool (jawn) that implements the basic functionality of john the ripper in FPGA logic. Jawn v1.0 currently implements DES, MD5, and Blowfish hash password cracking and runs on the ROAG platform, a Type 2 PCMCIA card with a XILINX Virtex-II Pro FPGA and a fully embedded PowerPC with 128MB RAM, 32MB Flash ROM, Ethernet, Serial Ports, and CANBus. It supports simple distributed processing by setting how many bits of the keyspace you want to search and allows you to search for just alpha numeric, all typeable/printable characters, or the full keyspace. Future plans are to run the key generation on the PowerPC for intelligent password generation. David will also go in-depth with new revolutionary approaches to FPGA programming including evolving algorithms / hardware / and other neural network concepts that become practical when using reprogrammable hardware. This presentation will provide a full introduction to how FPGAs work, different applications how to design logic for them, how to interface with your different peripherals, and how to optimize your design to be as size and speed efficient as possible. The goal is for the audience will walk out of the room with all the fundamentals needed to start doing FPGA development.
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9:59
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SecDocs
Authors:
David Hulton Tags:
FPGA Event:
Chaos Communication Congress 21th (21C3) 2004 Abstract: FPGAs (Field Programmable Gate Arrays) are slowly becoming more and more advanced and practical as high-speed computing platforms. In this talk, David will provide an in-depth introduction into the guts and capabilities of modern day FPGAs and show how you can take your current algorithms and efficiently convert them to gate logic and run them on hardware. This presentation will also introduce a set of open source cores (jawn v1.0) that will implement the basic functionality of john the ripper on FPGAs and allow you to crack password hashes as fast as 100+ PCs using FPGA PCMCIA cards on your laptop. Have you ever written an algorithm or a crypto cracker and wondered how fast it would run if you implemented it in hardware circuits with your bits flowing as fast as the electrons can move? What if you could put all of your algorithm's logic onto a specialized processor that does all of the work internally and just spits out an answer when it's done? It isn't as difficult as you think, and the chips are only getting faster and faster. FPGAs have many unique properties that can be exploited by a wide range of algorithms. This talk will release a new tool (jawn) that implements the basic functionality of john the ripper in FPGA logic. Jawn v1.0 currently implements DES, MD5, and Blowfish hash password cracking and runs on the ROAG platform, a Type 2 PCMCIA card with a XILINX Virtex-II Pro FPGA and a fully embedded PowerPC with 128MB RAM, 32MB Flash ROM, Ethernet, Serial Ports, and CANBus. It supports simple distributed processing by setting how many bits of the keyspace you want to search and allows you to search for just alpha numeric, all typeable/printable characters, or the full keyspace. Future plans are to run the key generation on the PowerPC for intelligent password generation. David will also go in-depth with new revolutionary approaches to FPGA programming including evolving algorithms / hardware / and other neural network concepts that become practical when using reprogrammable hardware. This presentation will provide a full introduction to how FPGAs work, different applications how to design logic for them, how to interface with your different peripherals, and how to optimize your design to be as size and speed efficient as possible. The goal is for the audience will walk out of the room with all the fundamentals needed to start doing FPGA development.
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11:01
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Hack a Day
This is not photoshopped, it’s a real gauntlet made of brass. [David Guyton] crafted it for some promotional photos for his book. But he also took the time to put together a step-by-step build tutorial. The process starts with paper templates. These are much easier to work with than metal stock so [David] spends quite [...]
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21:28
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SecDocs
Authors:
David Göthberg Tags:
P2P Event:
Chaos Communication Congress 22th (22C3) 2005 Abstract: About p2p-algorithms for fully distributed, totally serverless, fully scalable peer-to-peer systems. Not about specific p2p-softwares. This will only be a very brief overview of p2p-algorithms. This talk is about p2p-algorithms for fully distributed, totally serverless, fully scalable, globally searchable, robust, efficient peer-to-peer systems. These algorithms make it possible to make millions or even billions of computers work together in an organised manner without any central servers, without any computer being a boss over the others. We can now make applications such as filesharing, chat, instant messaging, Internet telephoning, radio and TV (sent from a single home user computer to a billion nodes), distributed calculation systems and many more applications. Since this talk is rather short we will not talk about specific p2p-softwares, encryption, stealth or anonymity. But we will mention some never before published stuff. The talk will be held by David Göthberg who has researched p2p-algorithms since 1997 and full time since the year 2000. Before that he used to work with Internet communication and computer security in embedded systems. (Internet in cars and other machinery.) David has now finished his research and is now working on building a p2p-programming library. So that other programmers can build advanced p2p applications easily, without having to spend years on research first. David's p2p-programming library will be available free of charge for anyone making free software. If you want more information from David before or after the congress take a look at www.pjort.com/projects/ or chat with "Mole2" in the channel #p2p-hackers on the IRC-network irc.freenode.net.
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6:48
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SecDocs
Authors:
David Göthberg Tags:
P2P Event:
Chaos Communication Congress 22th (22C3) 2005 Abstract: About p2p-algorithms for fully distributed, totally serverless, fully scalable peer-to-peer systems. Not about specific p2p-softwares. This will only be a very brief overview of p2p-algorithms. This talk is about p2p-algorithms for fully distributed, totally serverless, fully scalable, globally searchable, robust, efficient peer-to-peer systems. These algorithms make it possible to make millions or even billions of computers work together in an organised manner without any central servers, without any computer being a boss over the others. We can now make applications such as filesharing, chat, instant messaging, Internet telephoning, radio and TV (sent from a single home user computer to a billion nodes), distributed calculation systems and many more applications. Since this talk is rather short we will not talk about specific p2p-softwares, encryption, stealth or anonymity. But we will mention some never before published stuff. The talk will be held by David Göthberg who has researched p2p-algorithms since 1997 and full time since the year 2000. Before that he used to work with Internet communication and computer security in embedded systems. (Internet in cars and other machinery.) David has now finished his research and is now working on building a p2p-programming library. So that other programmers can build advanced p2p applications easily, without having to spend years on research first. David's p2p-programming library will be available free of charge for anyone making free software. If you want more information from David before or after the congress take a look at www.pjort.com/projects/ or chat with "Mole2" in the channel #p2p-hackers on the IRC-network irc.freenode.net.
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6:48
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SecDocs
Authors:
David Göthberg Tags:
P2P Event:
Chaos Communication Congress 22th (22C3) 2005 Abstract: About p2p-algorithms for fully distributed, totally serverless, fully scalable peer-to-peer systems. Not about specific p2p-softwares. This will only be a very brief overview of p2p-algorithms. This talk is about p2p-algorithms for fully distributed, totally serverless, fully scalable, globally searchable, robust, efficient peer-to-peer systems. These algorithms make it possible to make millions or even billions of computers work together in an organised manner without any central servers, without any computer being a boss over the others. We can now make applications such as filesharing, chat, instant messaging, Internet telephoning, radio and TV (sent from a single home user computer to a billion nodes), distributed calculation systems and many more applications. Since this talk is rather short we will not talk about specific p2p-softwares, encryption, stealth or anonymity. But we will mention some never before published stuff. The talk will be held by David Göthberg who has researched p2p-algorithms since 1997 and full time since the year 2000. Before that he used to work with Internet communication and computer security in embedded systems. (Internet in cars and other machinery.) David has now finished his research and is now working on building a p2p-programming library. So that other programmers can build advanced p2p applications easily, without having to spend years on research first. David's p2p-programming library will be available free of charge for anyone making free software. If you want more information from David before or after the congress take a look at www.pjort.com/projects/ or chat with "Mole2" in the channel #p2p-hackers on the IRC-network irc.freenode.net.
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5:01
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Hack a Day
[PRC148] picked up a Motorola Micom radio from eBay. These are US State Department surplus, but apparently the 125 Watt HF units are top-of-the-line at a tenth of the sticker price. The one hangup is that they’re headless; you can’t control them without additional hardware. But the Internets are often kind to the hobbyists, and [...]
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7:01
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Hack a Day
We knew this wouldn’t take long. [David] sent a high altitude balloon into the upper atmosphere last weekend using a Raspberry Pi as the brains of the payload. [David]‘s payload consisted of a Raspberry Pi, natch, with a Logitech webcam, GPS receiver, and six AA batteries wired into a LDO regulator with a monstrous heat sink to keep everything [...]
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11:01
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Hack a Day
This is a blinky ball that [David] designed, built, and programmed himself. Does it look familiar? It should, he took his inspiration from the original prototype, and the Hackerspace-produced derivative. [David's] version is not as small, or as blinky, but in our minds the development process is the real reason for building something like this. [...]
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8:01
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Hack a Day
Right after “no editing whatsoever”, the “shaky camera” is the bane of YouTube viewers the world over. [David] came up with a nice solution to the problem of shaky cameras that uses gyroscopes to even out the bumps of making a great movie. Most cameras attached to moving frames – from the zip-line cameras at NFL [...]
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14:01
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Hack a Day
It’s really amazing what you can find at military surplus shops. [David] just built a radiation detector out of a DT-590A scintillation probe originally made to test if Air Force bases were contaminated with Plutonium. Who says nothing good came out of massive nuclear arsenals? DT-590A / PDR-56 Gamma ray probes were made obsolete by the US Air [...]
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14:57
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Hack a Day
Here’s one way to really keep the component count low. [David] developed an NES controller that doesn’t use any buttons. The copper clad has been milled to provide a pad which registers a button push based on capacitance. The board has a SIL header at the top, making it easy to plug into the Arduino [...]
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4:01
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Hack a Day
Most people use pacemakers to, you know, keep their heart pumping at a steady rhythm. [David Prutchi] on the other hand has found a pretty novel use for some of the old pacemakers he has in his collection. We really had no idea that pacemakers had uses outside the world of medicine, but [David] has [...]
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12:14
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Hack a Day
[David] sent in a nice project to demonstrate augmented reality with ARtoolkit and discuss the deep philosophical underpinnings of the meaning of nothingness. The good news is he was able to create a volume control button on a sheet of paper with a marker. The bad news is the philosophical treatment is a bit weak; [...]
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11:01
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Hack a Day
The Arduino is an excellent first embedded development kit, provides a great introduction to electronics, and has the potential to get children into programming. [David] thinks throwing C at non-programmers isn’t the best way to learn programming, so he developed ArduBlock , a graphical programming language for the Arduino. We’ve seen a number of graphical, block-based programming [...]
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9:01
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Hack a Day
When [David] moved into his new house, one of the things he noticed was that his doorbell was pretty lame. Coming from a home equipped with a solenoid and chime bell, his new wireless solid state doorbell sounded terrible to him. Crummy sound aside, the doorbell hardly ever worked properly, but alas, other projects cropped [...]
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9:30
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Hack a Day
Hackaday reader [David] was looking for a cheap and easy way to spot weld copper tabs together. As he notes in his writeup, the properties of copper which are most enticing, such as high thermal capacity, make welding it all that more difficult. His home-brew method of spot welding is admittedly quick and dirty, but [...]
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13:34
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Hack a Day
You know we’re all going to starve, right? If the world’s population keeps growing exponentially and food production grows linearly, we’re eventually going to find out what Soylent Green is made of. This is where [David Dorhout]‘s Prospero robot farmer comes in. [David] has come up with the idea of using small autonomous robots to [...]
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14:01
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Hack a Day
We’re no strangers to POV time pieces around here, but something about them never gets old. Whether they use a ring of LEDs to draw clock hands, or an intricately cut HDD platter to replicate LCD segments, we love seeing them. [David] sent in this hard drive POV clock built by a fellow named [Kly], [...]
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13:01
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Hack a Day
[David] sent in his implementation of reading a PS/2 mouse with a PIC microcontroller and some LED displays. Of course, this follows hot on the heels of using a PIC with a PS/2 keyboard so now might be the time to start digging out your old peripherals out of your junk pile. [David] began his [...]
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10:00
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Hack a Day
[David] has always wanted use UV LEDs to write on a phosphorescent surface ever since saw an article about it on Make. He accidentally purchased UV LEDs when he meant to buy purple ones, so he figured that his mistake was all the reason he needed to give UV light writing a try. He built [...]
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13:58
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Hack a Day
We are always looking out for smaller yet capable computers for our projects, and this newest offering by [David Braben] is looking mighty nice. [David] is the head of a UK-based games studio, but has recently been focusing on bringing small, affordable PCs to classrooms around the world. The computer, called Raspberry Pi, is about [...]
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13:52
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Hack a Day
[David] recently wrote us to share the portable Nintendo 64 he constructed with the help of the friendly people over at the ModdedbyBacteria forums. We are no strangers to N64 portables, as you may have noticed, but this one was just too good to pass up. Sheathed in a metallic blue case, this console is [...]
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