[Amnon] sent in this demo of his groups voice controlled wheel chair. I couldn't find any details, but sometimes just a demo is enough to find some new inspiration. They connected a hm2007 speech recognition kit to an Innovation FIRST controller board on an electric wheel chair chasis. Additional sensors detect stairs and other obstacles.
Voice controlled wheel chair
[Amnon] sent in this demo of his groups voice controlled wheel chair. I couldn't find any details, but sometimes just a demo is enough to find some new inspiration. They connected a hm2007 speech recognition kit to an Innovation FIRST controller board on an electric wheel chair chasis. Additional sensors detect stairs and other obstacles.
Poll: Where should we go from here?
Hack-A-Day is looking to expand its coverage. We're hiring fulltime bloggers and freelance how-to contributors. We have an idea of where we should go with the site, but we'd like to know what you, the readers, want to see more of on Hack-A-Day.
DIY Rebreather scrubber refill
Most people fear refilling their own ink cartridges. [Skipbreather] made his own CO2 scrubber refill for his rebreather. (Modern rebreathers are damn impressive.) The build is fairly straight forward, but requires some machining. I had to laugh when I found out that part of his build involved toilet seat hold down bolts.
How-To: Scavenge a mouse for parts
Chris Kiick posted about swarm robotics earlier in the week and today publishes his first Hack-A-Day How-To.
Old computer mice are being abandoned in droves. They're tossed out because of dirt, obsolescence, or for being entirely too beige. Anyone who has a computer usually has more than one mouse and you can get them for pennies, if not free just for asking. Fortunately for the discriminating (read: cheap) hacker, these little widgets are chock-full of project parts. Today's How-To will dissect a computer mouse, extract the useful parts, and give some ideas about how to use them.
Syringe logic probe
[Travis] sent in his oh so simple(why didn't I think of that) syringe logic probe. that he put together for his version of the sump logic analyzer. Real probes tend to be pretty expensive. With some effort, you can probably fit an led/diode/resistor in there and make a simple 5v logic probe. If you'd like a nice logic analyzer, Spartan-3 board that it's based on is only $99.
The world's spookiest weapons
As purveyors of a fine hacks, we often get pitched on what are generally considered very bad ideas. Luckily, most of these ideas die on the drawing board due to a lack of time and energy or maybe having a shred of moral accountability. There's nothing that government funding can't fix though. Popular Science has put together a gallery of The World's Spookiest Weapons. It's a who's who of real and speculative engineering that could lead to our eventual destruction. Opening with the atomic bomb, it moves quickly into more bizarre territory, everything from heat rays, to rail guns, to gassing people with elephant tranquilizers. Our personal favorite is The Rods from God. Imagine getting smote by a precisely targeted metal power pole dropped from space that has accelerated to 36,000 feet per second thanks solely to gravity. What a wondrous world we live in.
[via Acidus]
DefCon CTF 2008 qualifier
Kenshoto is back again to run the Capture the Flag competition at DefCon. CTF is a multiteam competition featuring creative attack and defense of servers and lasts the entirety of DefCon. Unreleased exploits are often seen during the competition. As in previous years, Kenshoto will be narrowing the field with a qualification round. Quals will start the evening of June 30th and run for 48 hours. NOPS-R-US has a solution guide for the previous two years so you can get some idea of what you're getting yourself into. They've even got a couple write ups for last year's final. The competition should prove entertaining even if you don't make the final cut.
[via Midnight Research Lab]
Bruce Schneier's opinion on everything
Honestly, we were originally sent this Q&A with famed cryptographer [Bruce Schneier] as a restaurant recommendation (112 Eatery, Minneapolis). Posted last fall on NYTimes' Freakonomics blog it covers [Bruce]'s opinion on nearly everything. Here are a few items in particular that really stuck out to us:
The most immediate threat to the average person is crime - in particular, fraud. And as I said before, even if you don't store that data on your computer, someone else has it on theirs. But the long-term threat of loss of privacy is much greater, because it has the potential to change society for the worse.
What you're really asking me is about the security. No one steals credit card numbers one-by-one, by eavesdropping on the Internet connection. They're all stolen in blocks of a million by hacking the back-end database. It doesn't matter if you bought something over the Internet, by phone, by mail, or in person - you're equally vulnerable.We already knew he doesn't secure his WiFi (neither do we) and you'll find many other interesting discussions in the article. If you want Bruce Schneier facts though, you'll have to look elsewhere.
Interfacing your laptops onboard i2c
[ladyada] ran across this excellent hack by [phillip]. Apparently there's a clock, data, 5v and ground connection available in most modern video connections. (He even notes HDMI cable pins) He wrote some drivers and can now control i2c hardware directly from the
Swarm robotics
Uber-geek [James McLurkin] was in Austin recently demoing his robot swarm. He's on tour with EDA Tech Forum. [McLurkin] has multiple degrees from the MIT AI lab and worked at iRobot for a couple of years. Lately, he has been working on distributed robot computing: robot swarms.
[McLurkin] was an entertaining speaker and had an interesting view of robotics. He is optimistic that robot parts will become more modular, so it will be easier to build them, and more importantly, faster to design them.
Some quotes:
- "There's more sensors in a cockroach's butt than any robot"
- "12 engineer years to design, 45 minutes to build"
- "If it can break your ankle, it's a real [rc] car."
Cold boot encryption attack video
We haven't made a regular habit of watching BoingBoing TV, but lately they've been covering topics we've been interested in... not the dolphin pr0n. In yesterday's episode they talked to Jacob Appelbaum and members of the EFF about the cold boot encryption attack. The attack involves dumping the contents of memory to a storage device by power cycling the system. Cooling the memory chip with compressed air helps preserve the integrity of the data. The attacker can then search the data to find encryption keys protecting the contents of the hard drive. A fool proof solution to mitigate this attack hasn't been developed yet. You can read more about cold boot attacks at the Center for Information Technology Policy. The BoingBoing TV episode, bizarre editing and all, can be downloaded directly here.
Pocket Hitchikers Guide to the Galaxy (Wikipedia style)
[PKM] decided to breathe new life into a Psion 5mx handheld. He slapped linux on it, added a wikipedia dump to a CD card, and voila: pocket wikipedia. It's the closest thing to an actual hitchhikers Guide to the Galaxy I've ever seen. So long and thanks for all the fish!
Charter screwing with DNS
Charter Communications seems to be pulling some sort of crap with their DNS servers. While working on a new project our friend Billy Hoffman, discovered that Charter was reporting absolutely every domain as resolving. They do offer a solution by providing an opt-out cookie, which isn't useful at all if you're not using a web browser... and I'm guessing most of Charter's subscribers aren't looking for a bastardized version of the net. We've seen recently that messing with DNS like this can actually open up new security holes.
XBMC for your Mac
XBMC (formerly Xbox Media Center) has always been a popular choice for retiring an original Xbox. Maybe people install it for lack of something better to do or maybe it's the pride in having better media support than the 360. The XBMC team has found another device that has a pretty weak television experience, the Mac. Lifehacker took the latest XBMC for OSX beta build for a run now that it supports remote controls. It seems like a much more functional than Apple's built in Front Row. There are a few things that don't quite work yet, which you can find in the FAQ. We're definitely going to try this on our old Mac mini... once we upgrade it to Leopard, which is an unfortunate caveat that might prevent people from running XBMC on legacy hardware. There is no Apple TV support planned because of limited horsepower and the hacking hurdles that might be required. If you're interested in repurposing your old Xbox with XBMC, check out Lifehacker's install guide.
Smart car sensing with RF
In order to tell his home automation system that he's home, [Jim] mounted a RF transmitter in each of his cars. When the car is on, the transmitter is powered up. The house picks up the transmitter signal when the car arrives or departs. With that information, he was able to set up some stateful rules that can be activated when people arrive or depart. Some people prefer to use APRS and read vehicle location from the transmitted GPS coordinates, but this is a bit cheaper and doesn't transmit your position to the entire world all the time. The useful range is about 100 feet, so this can work even if you have to park in the street.
