Dear Hack a Day,
Websites keep publishing poorly executed jokes today; how can I fix this?
We’ve been getting a lot of questions on the tip line like the one above, so we put together this one-step illustrated how-to. If you’re not the physical labor type, you can use [Steve Lambert]’s SelfControl.
[Related: Hack a Day goes autonomous, Craft a Day]
The massive hacker camp Hacking at Random 2009 has extended their early bird ticket sales until April 14th. At EUR150, they’ve already managed to sell 1000 tickets. Every two years the european hacker community gathers together to hold a multiday camp that covers topics from hacking to art and politics. 2007’s CCCamp was largely the inspiration for this year’s ToorCamp. HAR2009 is looking for people to submit presentations, workshops, and lectures as well. They’re looking for entries that are very technology focused. The call for papers deadline is May 1st. The team is hosting a field day April 18th to tour the grounds with the various hacker villages that will be setting up. The main even is August 13-16 near Vierhouten, Netherlands.
We touched on harmonic table MIDI controllers when [aris] was building one. [Ken Rushton] has one of C-Thru’s commercial keypads, the AXiS-49, and disassembled the device to show how it works. A PIC18F2450 microcontroller provides the USB interface and is connected to a dsPIC33FJ128GP310 digital signal controller which decodes the keypresses. The membrane buttons are made with two concentric graphite disks that touch gold contacts. The microcontroller measures the time between the two points contacting to determine the button velocity. monome button clones also use circular contact pads, but cannot calculate velocity because they only have one element.
[via Matrixsynth]
With all the noise about Conficker turning your computer into liquid hot magma on April 1st, there’s actually some positive news. Researchers from the HoneyNet Project have been following the worm since infections started in late 2008. They recently discovered an easy way to identify infected systems remotely. Conficker attempts to patch the MS08-067 vulnerability during infection. A flaw in the patch causes the machine to respond differently than both an unpatched system and an officially patched system. Using this knowledge, the team developed a proof of concept network scanner in python to find infected machines. You can find it in [Rich Mogull]’s initial post. [Dan Kaminisky] has packaged it as an EXE and has instructions for how to build the SVN version of Nmap, which includes the new signature. Other network scanner vendors are adding the code as well.
In conjunction with this detection code, the team has also released the whitepaper Know Your Enemy: Containing Conficker. It discusses ways to detect, contain, and remove Conficker. They’ve combined this with a tool release that covers Conficker’s dynamic domain generation among other things.
We’ve been watching and waiting intently as ToorCamp comes together. It’s a four day hacker conference that will be held in a Washington state missile silo July 2nd-5th. While we’re excited about this debut event, its success depends entirely on those presenting. The call for papers is currently open and they’ve got a number of formats available: 20 and 50 minute talks and 1 and 2 day workshops. They’re also looking for people to organize campsites and are offering discounts for groups. We’re encouraging you to submit your talk since we’d love to see more hardware talks. You can follow @ToorCamp announcements on Twitter.
A team of three PhD students constructed this ‘multi-mallet automatic drumming instrument (Madi)‘. Their Expressive Machines Musical Instruments site is dedicated to building instruments like this and they recently showed their work at the first annual Guthman Musical Instrument Competition. A ‘low-stakes X Prize’ for musical instruments. 25 applicants were chosen to show their unique musical instruments for $10K in prizes. We like the team’s Madi because it’s adapting a traditional instrument and then pushing it to the limit. It reminds us of the Crazy J mechatronic guitar from 2005. You can see a video of the Madi playing below.
Reader [Will R] sent in a thermostat mod for his brew fridge. His friends had found a perfectly fine bar refrigerator and wanted to repurpose it for brewing beer. A previous batch of microbrew had been mangled by the Australian heat so they wanted something that could maintain the perfect temperature. The fridge’s built-in thermostat wouldn’t rise above 5 degrees so they had to build their own. [Will] used a 10K NTC thermistor to measure the temperature. It’s connected to an ATtiny25 microcontroller that does the comparison and determines whether to turn on the compressor. He referenced SparkFun’s relay tutorial for the switching side. Although he didn’t etch a board for this project, the design file is included along with all the code on the project site.
