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Hack a Day

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 http://hackaday.com via rss feed as at Feb 9 2012 12:35am

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Feb 9 2012
12:01am		Yet another 3D printer
What would you do if you wanted to demonstrate a linear bearing system? If you’re like [Bart] the obvious solution is building a tiny little 3D printer. [Bart]‘s Quantum ORD Bot is constructed out of a previous project of his, the MakerS... more
Feb 8 2012
9:01am		DIY Solid State Tesla Coil
Tesla Coils are always a blast to see and are relativity simple to build. While there are plenty of sites on the subject, [Michael's] newest instructable breaks building a solid state Tesla Coil down to 12 easy steps. Items that should be familiar to... more
Feb 8 2012
8:01am		Bring your own name badge
It used to be that the contents of your pocket protector directly mirrored your geek level. But that just doesn’t cut it in our fast-paced digital age. We think [Jonathan] is headed down the right track though, by creating a scrolling LED name ... more
Feb 8 2012
7:01am		WiFi experiments with ATtiny microcontrollers
[Quinn Dunki] got some free stuff from Element14 to evaluate, including this Mircrochip WiFi module. It’s been used as the centerpiece of an Arduino shield in the past, and she grabbed a copy of that library to see if it would play nicely with ... more
Feb 8 2012
6:01am		Build your own 4-channel logic analyzer
If you’re just getting into hobby electronics chances are there are lots of tools you’d like to get you hands on but can’t yet justify the purchases. Why not build some of the simpler ones? Here’s a great example of a 4-channe... more
Feb 8 2012
5:01am		Web game bot coded with Python
We find the programming challenge of game-playing bots to be fascinating. Take a look at this Python bot which plays Burrito Bison all the way through (video after the break). This is a totally pedantic exercise which has no purpose, other than to ho... more
Feb 8 2012
4:01am		Circuit Playground – An electronics reference app from Adafruit
It’s not everyday that we review software around here, but the folks at Adafruit recently put together an iOS app that I figured might be of interest. Their iPad/iPhone compatible application is called “Circuit Playground”, and it includes all ... more
Feb 8 2012
3:01am		Tweets send your balls flying (on TV)
Members from the London Hackerspace recently got a little on-air time with a ping pong ball launcher. They were invited to build something for the Click show on BBC. The launcher that they built responds to hash tags on Twitter by barraging the aud... more
Feb 8 2012
2:01am		Color sensor gives the RGB values of anything
[Rick Osgood] wanted to build a color sensor that could be held up to any object to get RGB color values. He originally started with a photoresistor and a few LEDs, but couldn’t get that to work reliably. [Rick] finally completed his color sens... more
Feb 8 2012
12:01am		Beer mini-kegs turned into a cyclonic dust collector
[Darrell] made his own cyclonic dust separator which connects to a shop vac. We’re amused by his poke at Dyson’s marketing machine where he mentions that the ads say it took years to perfect those vacuum cleaners and he managed to put his... more
Feb 7 2012
8:49am		Building LED walls on the cheap
Around this time last year, [KopfKopfKopfAffe] was enlisted as a set designer and was told to build some sort of light effects for electronic music parties. The budget for the project wasn’t much at 200 Euros, but he did manage to build decent ... more
Feb 7 2012
7:49am		Play hide-and-go-seek with infrared LEDs
Although we’re sure they exist, we wouldn’t want to meet anybody that can’t look back fondly on the halcyon days of youth that included playing hide-and-go-seek. Some kids never grow up and continue the tradition with geocaching or ... more
Feb 7 2012
6:49am		Replacing a phantom limb with a Kinect
Nearly everyone has heard of phantom limb syndrome. It occurs sometimes after a limb is amputated, but the mind of the patient still thinks that the limb is attached. Generally regarded as a mix-up in the wiring of the damaged nerves, a phantom limb... more
Feb 7 2012
5:49am		Electronic candle protects sleeping infant
[William] developed this temperature candle as a tool to help keep babies safe as they sleep. It seems that ambient temperature has an effect on Sudden Infant Death Syndrome (SIDS). This device is meant to alert you when room temperature is outside o... more
Feb 7 2012
4:49am		Speedier hard disk option for your Mac Mini
[Andrew] was left wanting by the slow hard drive in his 2011 Mac Mini. He set out to add a 10,000 RPM drive and we think he did a great job of pulling it off. Luckily he also took the time to document the process so you can try it yourself. As with a lot [...]... more
Feb 7 2012
2:01am		Robotic Etch-a-Sketch Draws Grayscale Images
[Patrick] decided to make a computer controlled etch-a-sketch. While the idea is not that new, there is always a different way to accomplish a goal. An Arduino is used to control a pair of stepper motors which were sourced for pretty cheap, and even ... more
Feb 7 2012
12:01am		DIY Windows 8 Tablet
[hackitbuildit], from instructables, has brought us a a DIY windows 8 tablet. To make the tablet, an old laptop is used that meets the minimum requirements of windows 8 preview, a touch screen conversion kit, and of course the software itself. The la... more
Feb 6 2012
10:44am		Improving headphones by voiding warranties
[Dan] had been wanting a pair of Bluetooth headphones for quite a while. Most of the reviews for wireless headphones in the $50-$80 range complained of tinny sound and dropped bass. Nevertheless, he stumbled upon a $20 pair of headphones with similar... more
Feb 6 2012
9:45am		Self-tuning piano can tune itself, can’t tuna fish
At Hack a Day, we don’t throw the term genius around lightly. We’re obligated to bestow that title on [Don Gilmore] for his amazingly simple self-tuning piano. To appreciate [Don]‘s build, you need to realize that just because a pi... more
Feb 6 2012
4:00am		Printrbot files in the wild
After a few months of eager waiting, [Brook Drumm] has finally released the files for his paradigm-shifting 3D printer, the Printrbot. If you didn’t order one of these during the Kickstarter, you can now print your own set of parts. [Brook] ga... more

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