whackatwo

game

noreply@blogger.com (ronic) — Thu, 01 Apr 2010 11:57:00 +0000

no game no play

Vacuum tube tesla coil

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:46:00 +0000

[xellers] may have been in 8th grade when he built this vacuum tube tesla coil, but he did a fantastic job. Unlike most of the tesla coils we have shown, this one doesn’t use a high current transformer from a neon sign. Instead, he’s gone the direction of vacuum tubes. He spent a total of about $125 which isn’t too bad. Most of us could reduce that cost by scrounging from our parts bin.

LEGO router case bests factory finish

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:45:00 +0000

Stare at [Luke's] LEGO router case; STARE AT IT! The router is nothing special, a WRT54GL that is fun to hack. We’ve seen it used as a robot, turned into a war driving box, and obviously this is where dd-wrt custom firmware started.

[Luke] designed the case in MLCAD and found a seller for the parts which came in just over $50. We think it’s much better looking than the stock case an if you used that for a different project, this is a way to replace it. We’ve embedded [Luke's] assembly video after the break. If you like this case, take a look at his LEGO PC case as well.

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Bike trainer computer: Speed, Cadence, Heartrate, Trainer temp

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:42:00 +0000

[Kurt] was using a bike trainer to get in shape for warmer and dryer biking months. Unfortunately it’s pretty hard to train if you don’t have reliable data concerning how hard you’re working. There’s commercial solutions for trainer computers but he’d read some rough reviews about them and decided to build his own trainer computer. He’s done a great job of integrating a lot of different data collection sources. He picked up two replacement bike computer sensors to use on the back wheel for speed (the front wheel is stationary with this type of trainer) and on the crank for cadence. He also wears a heart rate monitor and sourced a SparkFun heart rate module to gather that data. Finally, an LM235 analog temperature sensor was combined with a spring clamp to detect the temperature of the trainer’s resistance module.

Data from the sensors is collected with a PIC16F73 microprocessor and fed to a computer over a serial connection. He’s got a screenshot of the realtime graphs that he’s using for feedback while on the bike. This is a useful and practical setup but when he get’s tired of exercising he’s just a few lines of code from converting this into a gaming controller.

[Thanks Justin]

Don’t put that EPROM in your mouth!

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:41:00 +0000

[Jeremy] had some chips on hand that included EPROM. We’re not talking about EEPROM, we mean EPROM that need a UV light source to erase. Most people don’t want to drop a few hundred dollars on a dedicated EPROM eraser, there must be another way.

Boy, EPROM really suck. But so do pacifiers and he already had a solution for exposing those to UV. He pulled out his $30 UV pacifier cleaner and tossed the chip inside. Two times through the cleaning cycle and the data was gone. We’ve looked into using UV LEDs to do the job but some experimentation shows that it doesn’t work. These pacifier cleaners are cheap and easy to get a hold of. The real question is are you still using chips that require UV for erasing?

Stroke to unlock

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:41:00 +0000

If you’re into embedded clothing this stroke sensor is for you. As demonstrated in the video after the break, stroking the threads in a particular direction will create a circuit that senses and, in this case, turns on an LED. The concept uses two conductive buses on the back of a piece of neoprene. Conductive and non-conductive threads are then added for a furry or bristly finish. When stroked perpendicular to the power buses the conductive threads come together and form a circuit.

For some reason this just seems a bit creepy to us but perhaps that’s only because we haven’t come up with the right application for the technology. We’re pretty sure that a sweatshirt with an LED marquee and a “hairy” back that you stroke to illuminate is the wrong application.

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Arduinome with many pots

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:39:00 +0000

[Aggaz] added 16 potentiometers to his Arduinome.The Arduinome is a monome clone based around the Arduino as a microprocessor. We seen some Arduinome builds in the past but [Aggaz's] work augments the physical interface.

Potentiometers used in circuit bending allow for manipulation of the sounds coming out of the circuits. In this case the pots are connected to the microcontroller instead of the sound generation circuitry which means you can do whatever you want with them depending on how creative you are with the code. So far he’s just starting to get the new set of interfaces to play nicely over the serial connection. This could end up being quite popular as it only requires the addition of a multiplexer IC, the potentiometers, and the knobs.

Weather clock

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:38:00 +0000

[Sean_Carney] build this clock that tells the weather instead of the time. The two hands display the current conditions and the temperature. Forty below zero seems amazingly cold if you’re on the Fahrenheit scale but [Sean's] from Winnipeg so he’s operating on the Celsius side of things.

Two servos move the hands to match the data scraped off of the Internet. An Arduino does the scraping with the help of an Ethernet shield. This reminds us of the Harry Potter clock that tells a persons location.

[via Flickr]

Amazing chassis hacks

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:37:00 +0000

[Crabfu] pulled off some great chassis work on top of a remote control drivetrain. His most recent build turns the tiny traveler into a lunar rover complete with passenger and a communications array. For this he’s sourced the parts from a toy but boosted the realism with hand-painted details that leave us in awe. His previous project sourced the body from a model truck kit. Once again, it’s the paint work that makes us envious of his skills.

Both projects conceal a Losi 1/24 scale micro rock crawler that provides for some incredible locomotion. See video of both builds after the break.

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Steampunk Nixie clock

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:36:00 +0000

This single-digit Nixie clock is a thing of beauty. You might hate Steampunk or you might love it, but you have to respect projects where the design gets equal (or more) consideration compared to the function. The electronics used in the project build upon an existing single Nixie design. Instead of hiding the guts inside the clock the PCB has been laid out to augment the design. We think [Blue Metal] hit it out of the park with this one!

Kodak digital frame vulnerability

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:35:00 +0000

Kodak managed to release a product with a big fat security vulnerability. [Casey] figured out that the Kodak W820 WiFi capable digital frame can be hijacked for dubious purposes. The frame can add Internet content as widgets; things like Facebook status, tweets, and pictures. The problem is that the widgets are based on a feed from a website that was publicly accessible. The only difference in the different feed addresses is the last two characters of the frame’s MAC address. Feeds that are already setup can be viewed, but by brute-forcing the RSS link an attacker can take control of the feeds that haven’t been set up yet and preload them with photos you might not want to see when you boot up your factory-fresh frame.

It seems the hole has been closed now, but that doesn’t diminish the delight we get from reading about this foible. There’s a pretty interesting discussion going on in the thread running at Slashdot.

[Photo credit]

LEGO robot lays dominoes not eggs

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:34:00 +0000

[Mattias] brings the awesome once more with his LEGO robot that sets up dominoes. You’ll remember his work from the wooden keyboard case and the mechanical binary adder. This time around he’s still exercising those woodworking skills by making his own domino tiles, but it’s the robot that makes this interesting. In the must-see video after the break the device lays perfectly straight, perfectly spaced dominoes just begging to be upset by a spoiled toddler. The robot is nothing more than handful of LEGO parts powered by a tape deck motor. The parts may be meager, but there’s an abundance of ingenuity tied up in the design.

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CES: Parrot’s AR Drone

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:31:00 +0000

We hadn’t been here long when we stumbled upon the Drone tent. The AR Drone is a wifi controlled quad copter that has been making waves recently. We actually got to play with one a little bit. Well, sort of. There was too much interference inside for us to fly it manually, but we did smack it around a little bit while they told us about it. It was amazingly steady and strong while it tracked a target around the tent. Check back later for more videos and details.

CES: RoBoard Robotic Hand

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:30:00 +0000

Today while walking around the booths, we saw a robot hand sitting out with a couple of exposed boards. This of course attracted our attention, and we thought we would share.

The hand is based on a RoBoard Vortex86DX board, which is an x86 control board. We even got the pinouts and datasheets, and we will post those later when we manage to get them uploaded.

CES: USB 3.0 Behind the scenes

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:29:00 +0000

We know a couple of you have been asking about the tech behind the show, and we managed to spot an FPGA (in this case, the Xilinx Virtex 5) serving as the core of a demo between two SuperSpeed USB Solid State drives. It was used as both a USB 3.0 hub, as well as being used to time the file transfers and get accurate speed reports. The Hi Res Shot is also available.

2-axis motion timelapse photography

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:28:00 +0000

[Milapse] picked up a motorized telescope base a few years ago. He’s using it to add motion to time-lapse photography. The base provides two-axis rotation controlled with a handheld keypad. Custom firmware and a bit of software allow for computer control. [Milapse] is pretty well-known in the time-lapse photography circles of the Inter-web. He’s posted a ten minute video explaining his setup and programming work for the hardware.

His use of a quality camera produces some nice video.However cost at $200 for the base, if you just want to play around with the concept you might want to stick to a webcam and LEGO setup.

[Thanks Jack]

Suska open source Atari ST

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:27:00 +0000

Got a special place in your heart for Atari computing? Now you can quench that need using new hardware. The Suska project has achieved complete hardware emulation of the Atari ST using an FPGA. The project’s progress tracker shows implementation of the major chips at 100%. They are running EmuTOS, an Atari emulator, as the operating system because running the original would violate copyright. The chip used is an Altera Cyclone III. You could load up the code on your own hardware but judging from the number of connections needed it might be less of a headache to buy a board from these guys.

[Thanks Erik]

Spy on your office

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:26:00 +0000

[Garagedeveloper] sent us his custom surveillance system, part 1, part 2, and part 3 after needing a way to find out why some cables at work were becoming unplugged (spoiler, the cleaners were messing up the wiring). At the base of the system is a web cam glued to a stepper motor. However, it gets much more in depth with a web front-end that allows the user to stream the feed and control the position of the stepper. We’re not particularly fond of how many different parts the project takes, while it all could be accomplished under C# with ASP.NET and parallel port library instead of including Arduino and excess code, but to each their own and the project turned out a success anyway.

Version control for Eagle

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:25:00 +0000

[Jeff] set up version control for Eagle libraries and projects. He mentions that Eagle has become the standard for open source hardware projects and he’s absolutely right. We use it for our projects, and we’ve grown to expect that the posts we feature have Eagle files available in most cases.

But Eagle falls short in its library management. There is some amazing work from SparkFun to support a usable parts library, but who hasn’t added parts themselves? [Jeff] setup libraries using github so that changes and additions to the libraries can benefit all and cut the amount of time spent making custom footprints for new components and packages.

Fun Theory grant is 25k for a fun project

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:23:00 +0000

First the bad news, it’s too late for you to apply for this grant. The good news is that you can vote for the projects you think deserve money to do some good.

The Fun Theory is the group that produced the musical subway stairs and the bottle bank arcade. Now they’ve put out the call to arms on the Internet for submissions that make life more fun and our communities better places. All of the submissions for the fun-theory-award are in and available for your perusal. Some of the most popular submissions include a vending machine that uses recycled cans to play a slot-machine game, a hand sanitizer that makes funny sounds when used, and putting a giant crossword puzzle at bus stops to encourage ridership and make waiting more fun.

[Thanks Matthew][see Matthew's entry in the contest]

[cash photo credit]

SparkFun’s Free Day is nearly upon us…

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:23:00 +0000

As I’m sure many of you already now, today is January 7th. While that might not have any real significance normally, today this means that our favorite hobby supplier, SparkFun, is giving away up to $100,000 of electronic goodness. We know we have our shopping carts filled to the brim, and we’re sure that most of you do too. With the start of Free Day being roughly 10 minutes away, we recommend that everyone man their shopping carts…. This should be interesting…

Max/MSP accelerometer beat control

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:20:00 +0000

let us know about his Max/MSP Controller. Inside the device is an ADXL 335 accelerometer and 6 push buttons wired to an Arduino. The input data is sent to Max MSP, a sequencer controlling 5 audio tracks, correlating to 5 of the buttons. The 6th button controls delay. What we really liked was how the accelerometer modified the speed of the beat in the X-axis, and the delay intensity with the Y-axis. Whats next? We think gesture recognition might be something fun to try, but [Ryan] is unsure. We’ll keep you up to date.

Pong, for real

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:19:00 +0000

Over at EvilMadScientistLaboratories.com they’ve asked a question that many of us have never thought to ask. What exactly is Pong supposed to be? Instead of assuming it was ping pong like the rest of us, they decided to build a literal physical interpretation. They may have taken some liberty, using solenoids as the paddles, but the end effect is quite nice. Watching them play actually looks both challenging and fun. There’s a great writeup about the construction, so be sure to check out the project page.

Reverse engineering the Telly Terminator

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:19:00 +0000

[Oliver] received the Telly Terminator as a gift and decided to take a closer look at it. This key fob has two buttons; one shines an LED like a flashlight and the other turns off televisions. Sound familiar? Yeah, it made [Oliver] think of the TV-B-Gone as well.

He cracked open the case to find just a few components. The brain behind the IR signals is a Helios H5A02HP. Only a few pins are used for outputs so he connected a logic analyzer and recorded the signals. His writeup covers the process quite well. He takes a known IR transmitter protocol and compares it to the capture from the logic analyzer. It turns out that the fob generates 46 different signals and with further analysis concludes that there’s a chance the code used here is from an older version of the TV-B-Gone source.

CES update: January 6th, 2010

noreply@blogger.com (ronic) — Tue, 02 Mar 2010 03:17:00 +0000

It’s just about time for CES (as we’ve mentioned once or twice), so we thought we would update you on our latest goals and ideas for the show.

This year [Caleb Kraft], [Nick Caiello], [James Munns], [Devlin Thyne], and [Brett Haddock] will be covering CES. We are currently looking for some good places to go if we get a chance to break away from the show, and while we won’t make any guarantees, we’d love to meet some of our readers! Please direct all ideas for your favorite eatery to our Contact Page. Keep an eye on our Twitter page (@hackaday) for CES updates and what your favorite writers are up to, where we are eating, and other possible chances to meet up with us.

We are also still looking for Las Vegas Hackerspaces to visit, so let us know and we would love to cover it!

Be sure to check out our updated interest list after the break, and keep sending in what you want to see!

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