h:D

Planet

  • Mardi, Mars 25, 2014 - 06:00
    Interview with Jason Kridner, co-founder of BeagleBoard.org #beagleboneblack @TXInstruments @beagleboardorg

    NewImage

    Opensource.com recently posted this interesting interview with Jason Kridner, one of the co-founders of BeagleBoard.org. We’ll post some excerpts here but you should check out the whole thing here.

    Jason Kridner is the co-founder of BeagleBoard.org, where he has helped create open source development tools such as BeagleBone Black, BeagleBone, BeagleBoard, and BeagleBoard-xM. Kridner is also a software architecture manager for embedded processors at Texas Instruments (TI).

    During his 20-year tenure with TI, Kridner has become an active leader in the open source community. He has engaged audiences at a variety of industry and hardware and software developer shows, including Maker Faire, Embedded Linux Conference, Android Builders Summit, OSCON, CES, Design West and Linux Collaboration Summit.

    The goal for BeagleBoard.org is to inspire anyone—from kindergarteners to Kickstarter developers—to learn about how computers can be used in an everyday ways to remove barriers to learning, prototyping, and production. Success is when even a child can plug in the board, intuit what he or she can build with it, and share his or her designs with the world.

    What are some of your best sellers?

    Thanks to the low retail sales price of $45, the BeagleBone Black is the best-selling board design from BeagleBoard.org. All boards continue to be available and continue to be sold every day, thanks greatly to the amount of educational materials built around them. Some people are particularly interested in the DSP capabilities and additional USB host ports of the BeagleBoard-xM. Some people are interested in the built-in low-level debug capabilities of the original BeagleBone. Still, BeagleBone Black has now outsold all of the other designs combined.

    What’s in store for BeagleBoard.org in 2014? What’s in store for open hardware in 2014?

    As I mentioned, I believe the trend toward more compelling online trainings for hardware development will accelerate in 2014. The snowball effect means that many people will be getting more than a superficial introduction to advancing the state of open hardware for all of us…

    For BeagleBoard.org and BeagleBone Black in particular, we are shifting the Linux distribution included on the board to Debian and upgrading our to version 3 of the Cloud9 IDE, which I see as a significant improvement with Python support, better shell capabilities, and improved debugging. We are also starting to include other libraries to program the board’s physical I/Os in Python, C/C++ and sketches. Upping board capacity and improving the software experience will be major focus items that our community of users should notice and help direct. Among the most visible and interesting development activities will be happening as part of the 2014 Google Summer of Code, for which the BeagleBoard.org Foundation is an approved mentoring organization and for which some number of students will get paid for their open source software development work. With at least half a dozen Beagle-related books coming out and popularity at an all-time high, 2014 could easily shape up to be the most exciting year for BeagleBoard.org yet!

    Read more.


    BeagleBone Adafruit Industries Unique fun DIY electronics and kits

    Each Tuesday is BeagleBone Black Day here at Adafruit! What is the BeagleBone? The BeagleBones are a line of affordable single-board Linux computers (SBCs) created by Texas Instruments. New to the Bone? Grab one of our Adafruit BeagleBone Black Starter Packs and check out our extensive resources available on the Adafruit Learning System including a guide to setting up the Adafruit BeagleBone IO Python Library. We have a number of Bone accessories including add-on shields (called “capes”) and USB devices to help you do even more with your SBC. Need a nice display to go along with your Bone? Check out our fine selection of HDMI displays, we’ve tested all of them with the Beagle Bone Black!

  • Mardi, Mars 25, 2014 - 06:00
    First Stab at Motion Sensor to Disconnect a Car Charger

    motion-sensing-car-charger

     

    [Pixel] just sent in this automotive hack which disconnects his car charger when the vehicle stops moving for at least 10 minutes. Why would you need such a thing? The 12V outlet in his vehicle isn’t disconnected when the ignition is turned off. If he leaves a charger plugged in when parking the car, he often returns to a drained battery.

    The fritzing diagram tells the story of this hack. He’s using a 7805 to power the Arduino mini. This monitors an ADXL362 accelerometer, starting the countdown when motion is no longer sensed by that chip. At the 10-minute mark the N-channel MOSFET kills the ground side of the outlet. Good for [Pixel] for including a resetable fuse on the hot side. But it was the diode all the way to the left that caught our eye. Turns out this is part of a filtering circuit recommended in a forum post. It’s a Zener that serves as a Transient-Voltage-Suppression diode.

    Another comment on that thread brings up the issue we also noticed. The 7805 linear regulator is constantly powered. Do you think putting the uC into sleep and leaving the linear regulator connected is an adequate solution? If not, what would you do differently?

    Filed under: transportation hacks

  • Mardi, Mars 25, 2014 - 05:07
    Hanging with Frank Gehry: Seattle Mini Maker Faire 2014

    IMG_6212Slideshow of the great projects, people and venue (Frank Gehry's EMP building) of this past weekend's Seattle Mini Maker Faire.

    Read more on MAKE


  • Mardi, Mars 25, 2014 - 05:00
    PYRAD: LED “Infinity” panels inspired by Enter the Void #ArtTuesday

    NewImage

    Check out this sweet LED installation from gmunk, inspired by the film Enter the Void.

    The main inspiration for the creative came from the DMT-Delicious moments in the super-favorite film Enter the Void… Munko has been on a tunnel infinite-void kick for some years now and wanted to build a practical, LED installation driven by graphic sequencing, utilizing the techniques learned from the FOTB Titles and applying them into a more densely packed setup called the PYRADICAL… Once the Pyrad was constructed, the aim was to capture the visuals with both high-resolution Film and Still cameras, which would generate a vast library of content to pull from to produce the artwork for the Conference Package..

    He tapped super-friend and lighting genius Michael Fullman to help him execute the concept, which was to construct a triangular volume out of three LED panels, flanked on either end by a trio of Light Tubes that would complete the design. Once Munk and and Michael had the concept and build nailed down, he tapped frequent collaborators Kevin Gosselin and John Nguyen to capture the installation on the Arri Alexa and Nikon D800.

    In building the actual structure for the Pyrad there were some pretty unique challenges to attain the desired aesthetic. We needed to not only communicate forward and backward motion but also communicate negative space and scale.

    The structure itself is made up of two main elements. The LED Panels and the LED tubes. 3 LED panels were used to make up the walls, all controlled by video content from a control computer. This allowed us to have open ended control over the motion, color, and effects that were applied to the video content. In addition to the 3 LED panels, 6 LED tubes were used to border the structure at both the front and the back opening. These tubes were also controlled by a mapped video signal that corresponded with the content playing on the main panels. That way we could accomplish moments of punch and exclamation as the content traveled both toward and away from the camera. They also provided a really nice frame for the shot, showing us the beginning of the space and the end.

    The real challenge was to trick the viewer into not realizing the scale of the actual structure. Which is really about the camera position, lensing, and light control in the structure, using both the presence and absence of light.

    Read more.

    FITC Amsterdam 2013 PYRADICAL from GMUNK on Vimeo.

  • Mardi, Mars 25, 2014 - 03:01
    Bookworm Playing Bot Tests Programmer’s OCR Skills

    bookworm-bot

    Check out this brainy bot with [Jari] whipped up to dominate the Bookworm Deluxe scoreboard. The bot runs on top of a win32 machine, pulling screenshots to see the game board and simulating mouse clicks to play. The video after the jump shows that it plays like a champ, but it took some doing to get this far and [Jari] took the time to share all of the development details.

    The hardest part of writing these types of bots is recognizing the game pieces. Check out all of the animation that’s going on in the still shot above… a lot of the tiles are obscured, there are different colors, and the tiles themselves shift as the bot spells and submits each word.

    After some trial and error [Jari] settled on an image pre-processor which multiplies pixel values by themselves four times, then looks at each pixel with a 1/6 threshold to produce a black and white face for each tile. From there a bit of Optical Character Recognition compares each tile to a set of known examples. This works remarkably well, leading into the logic and dictionary part of the programming challenge.

    Do you think this was easier or harder than the Bejeweled Blitz bot. That one was looking for specific pixel regions, this one is basically a focused roll-your-own OCR script.

     

    Filed under: video hacks

  • Mardi, Mars 25, 2014 - 02:38
    Hot Off the Press: MAKE Volume 38, Our High-Tech DIY Issue

    M38_CVR_highRezOur newest issue hits newsstands this week and features over 50 projects sure to please a wide range of makers.

    Read more on MAKE


  • Mardi, Mars 25, 2014 - 00:33
    Enter to Win the Maker Faire Rome Arduino Challenge

    Arduino Uno Rev 3 (Make SMD Version)Two tickets to (Arduino) paradise await the lucky winner!

    Read more on MAKE


  • Mardi, Mars 25, 2014 - 00:01
    Rebuilding A 50,000 Volt Power Supply

    Spark

    The theory behind building power supplies is relatively easy, but putting it into practice and building a multi-kilovolt supply is hard. A big transformer in air will simply spark to itself, turning what could be something very cool into something you just don’t want to be around. [glasslinger] over on YouTube is an expert at this sort of thing, as shown in his 50,000 Volt power supply build. That’s a 55 minute long video, and trust us: it’s worth every minute of your time.

    [glasslinger] began his build by taking an old 15,000 Volt neon sign transformer and repurposing the coils and cores for his gigantic 50,000 volt transformer. There was a small problem with this little bit of recycling: the neon sign transformer was potted with tar that needed to be removed.

    To de-pot the transformer, [glasslinger] made a small oven from a helium tank, melting all the goo out with an old school gasoline torch. From there, hours and hours of cleaning ensued.

    The transformer cores were cleaned up and cut down, and a new primary wound. A small-scale test (shown above) using the old secondaries resulted in a proof of concept with some very large sparks. The next step was putting the entire transformer in a box and filling it with transformer oil.

    The money shot for this build comes when [glasslinger] assembles his transformer, rectifier, and all the other electronics into a single, surprisingly compact unit and turns standard wall power into a 50,000 Volt spark. You can literally smell the ozone from the video.

     

    Filed under: misc hacks

  • Lundi, Mars 24, 2014 - 23:50
    Playing chiptunes with Arduino Micro #arduinomicromonday

    playerMicro

     

    Vespira created a project  forking a previous one made with Arduino Uno. In this case all audio is generated on the Arduino Micro:

    If you look closely, you will see that I added a yellow wire going from the TXLED to the empty hole that was drilled over by the reset button. I added a single pin though this hole and epoxied the plastic in place to give myself another bread-boardable pin that has access to the PD5 signal which was not broken out. Simple mod really.

     

  • Lundi, Mars 24, 2014 - 22:00
    Making Majora’s Mask

    majora's mask

    Majora’s Mask is one of the most recognizable things in all of the Legend of Zelda games. Instructables user magicman391 built one, and he began by making a computer model of the mask in Rhino just to get the placement of each section down. He did a clever thing and split the mask into three segments in Rhino so he could print a top view of each piece and put it on layers of pink foam. This allowed him to easily get the right shape. Here’s how he proceeded from there:

    Now most people know pink foam is good for doing rough shapes and has no real permanence especially with the introduction of solvents sooooooo I coated the foam with a layer of my favorite material of all time… epoxy putty, specifically in this case I used Apoxie Sculpt.

    Next came the fun part (I jest since bondoing and sanding takes a long time and is very repetitive) I apply a layer of bondo to the surface to even it out, followed by immense amounts of sanding, then repeated this process several times. I followed the final sanding step of bondo with spot putty to fill in the small gaps, then of course sanded that smooth.

    Read more at Instructables.

  • Lundi, Mars 24, 2014 - 22:00
    New Project: KegDuino – Arduino meets Kegerator

    IMG_0692The goal of this project is to provide a simple, cost-effective DIY solution to awesome Kegs!

    Read more on MAKE


  • Lundi, Mars 24, 2014 - 22:00
    Turn Your Phone Into A Photo Projector On The Cheap

    How to Turn Your Phone Into a DIY Photo Projector for 1 Photojojo

    How to turn your phone into a DIY photo projector. via photojojo

    A phone based projector is a great way to show off your mobile photos and your phone hack savvy. Just picture laying in bed browsing your feed or watching a movie on a ginormous screen.A projector provides a new way of looking at your shots, and for $1, who can afford not to try this project?

    THE INGREDIENTS:
    Shoebox
    Paperclip
    Smartphone
    Magnifying glass (get it for $1 at Dollar Tree), or a large aperture lens
    X-acto knife or similar
    Electrical or black duct tape
    Optional: Matte black spray paint or black paper

    NewImage

    STEP 1: TRACE A HOLE ON THE BOX
    A shoebox or similar will work great for your new projector.If the inside walls of your box are a bright color, you may want to spray paint them black or tape up some black paper for best image quality.Once your box is ready, trace the outer edge of your lens or magnifying glass onto one of the short sides of the box.

    STEP 2: CUT A HOLE IN THAT BOX
    Cut out the inside of the circle you just traced. You don’t want light leaking around your lens so try not to cut too much. At the back of your box, cut a small hole for your phone’s power cord.

    STEP 3: ATTACH YOUR LENS
    Now you’ve got a porthole cut in your shoebox its time to stick on that lens. If your magnifying glass has a handle, you may want to remove it first. Line up your lens with the hole and apply tape around the entire edge of your lens. Make sure your lens is held securely and there are no holes between the tape for light to escape.

    STEP 4: TAKE A STAND
    We used this very helpful tutorial to make a stand for our phone out of a paper clip. Other stand ideas include this ultra-portable Tiltpod, this hand dandy Gorillapod, or this super creative lego stand from this cool tutorial.

    STEP 5: FLIP YOUR SCREEN
    When light passes though a lens (including the lenses in your eyes), it gets flipped, which means the picture from your projector will come out upside down. No fear though, we have a fix! For the iPhone go to Settings > General > Accessibility and turn on AssistiveTouch. Once activated, a little white orb will pop that you can drag around the screen. Click on the orb and go to Device > Rotate Screen. This will allow you to flip applications like the Photos app which would normally rotate itself right side up. Andriod users can download the app Ultimate Rotation Control. Or if all else fails you can just stand on your head.

    STEP 6: FINDING FOCUS
    If your walls are plastered with pics you will need to clear out a little space for your projection. For a screen you could use a white bed sheet, turn a poster around, project onto a shower or window curtain, or just use the bare wall. Without a focus ring on your magnifying glass you’re going to have to foot focus. Position your phone in its stand near the back of the box and walk forwards or backwards until your image starts to come into focus. Once you’ve found a good range you can fine tune focus by moving your phone forwards or backwards in the box. If you used a camera lens for your projector, you get the bonus of a focus ring that gives you some extra flexibility in terms of screen size and focus distance.

    STEP 7: DON’T FIGHT THE LIGHT
    It’s not the power of your projector. It’s how you use it! For best viewing, turn the screen brightness of your phone all the way up and turn the room lights down. Set your phone’s photo app to slide show mode for a hands free experience. Your power cord can go through the hole you cut in the back of the box and a little tape will seal the deal.

    Read more

  • Lundi, Mars 24, 2014 - 21:00
    GLIMPSE360: NASA’s Spitzer telescope lets you see a 360-degree view of the Milky Way

    Ever wanted to catch a 360 degree glimpse of the Milky Way? Well now you can using this incredible online viewer from NASA’s Spitzer telescope. Check it out here.

    Welcome home! This is our Milky Way galaxy as you’ve never seen it before. Ten years in the making, this is the clearest infrared panorama of our galactic home ever made, courtesy of NASA’s Spitzer Space Telescope.

    The star-studded panorama of our galaxy is constructed from more than 2 million infrared snapshots taken over the past 10 years by NASA’s Spitzer Space Telescope.

    “If we actually printed this out, we’d need a billboard as big as the Rose Bowl Stadium to display it,” said Robert Hurt, an imaging specialist at NASA’s Spitzer Space Science Center in Pasadena, Calif. “Instead, we’ve created a digital viewer that anyone, even astronomers, can use.”

    The 20-gigapixel mosaic uses Microsoft’s WorldWide Telescope visualization platform. It captures about three percent of our sky, but because it focuses on a band around Earth where the plane of the Milky Way lies, it shows more than half of all the galaxy’s stars.

    Read more.

  • Lundi, Mars 24, 2014 - 21:00
    Soft Robotics, Silicone Rubber, And Amazing Castings

    soft

    Most of the robotics projects we see around here are heavy, metallic machines that move with exacting precision with steppers, servos, motors, and electronics. [Matthew] is another breed of roboticist, and created a quadruped robot with no hard moving parts.

    [Matthew] calls his creation the Glaucus, after the blue sea slug Glaucus atlanticus. Inside this silicone rubber blob are a series of voids, allowing compressed air to expand the legs, gently inching Glaucus across a table under manual or automatic control.

    Even though no one seems to do it, making a few molds for casting on a 3D printer is actually pretty easy. [Matthew] is taking this technique to an extreme, though: First, a mold for the interior pressure bladders are printed, then a positive of this print made in silicone rubber. These silicone molds – four of them, for the left, right, top and bottom – are then filled with wax, and the wax parts reassembled inside the final ‘body’ mold. It’s an amazing amount of work to make just one of these soft robots, but once the molds and masters are made, [Matthew] can pop out a soft robot every few hours or so.

    There’s a lot more info on Glaucus over on the official site for the build, and a somewhat simpler ‘compressed air and silicone rubber’ tentacle [Matthew] built showing off the mechanics. Video below.

     

    Filed under: 3d Printer hacks, robots hacks

  • Lundi, Mars 24, 2014 - 20:00
    Arduino Helper Functions

    Sometimes finding the right snippet of code to use in your Arduino sketch is as simple as reading the Monday Jolt on the MAKE site.

    Read more on MAKE


  • Lundi, Mars 24, 2014 - 19:00
    Addicting online game lets you generate the Higgs Boson by colliding particles

    LHC

    We’re obsessed with this game that lets you collide elementary particles to try to generate the Higgs Boson. We got as far as z boson but unfortunately LHC broke down before we could beat the game and generate the Higgs Boson. Try it out yourself here and see how far you can get!

    Collide these elementary particles and generate the Higgs Boson!

    Note : Quarks will not appear for they are having a holiday with Muster Mark. Thanks to that! Otherwise it would be as difficult as dealing with the number 131072 in the original version! Σ( ̄ロ ̄lll)

    HOW TO PLAY: Use your arrow keys to accelerate the particles. When two particles with the same type collide, they annihilate and a new particle would be generated!

    Read more.

  • Lundi, Mars 24, 2014 - 18:34
    New Tindie site – The easiest way to buy and sell indie hardware #makerbusiness

    Adafruit 2796

    New Tindie site – The easiest way to buy and sell indie hardware..

    Wildly better interface
    Our goal is to foster a community around makers going pro, and bringing their creations to market. With the changes we released, we continue to make it easier and easier to go pro on Tindie. The changes will only be made more pronounced as we release MOAR features in the coming weeks. Stay tuned!

    No more resale products
    We also retired resale, supply parts. We believe this will help makers get their creations in front of more people, and ultimately make them more successful. Moving forward there won’t be an option to list a resale product.

    Visit.

  • Lundi, Mars 24, 2014 - 18:01
    The Gathering: Shanghai’s Hackaday Community

    Screen Shot 2014-03-23 at 12.33.00 AMIt happened! The Gathering crossed the Pacific and landed in Shanghai on Thursday, March 20th. It took place at the venue ironically called ‘Abbey Road’ (it’s the only one we could find on such a short notice) and more than 150 people showed up. The whole scene had a huge Chatsubo feel too it – an eclectic mix of local and expat hackers and engineers, professors, students and all sorts of industry mercenaries from around the world. And everyone with skull-and-wrenches t-shirt or a sticker on.

    I can only imagine what Chinese police would think if they happened to drop by. Not to mention if they asked how in the world did all these ‘anarchist’ t-shirts enter the country.

    But that’s another story…

    We met a lot of exciting people and heard all sorts of weird tales, such as the (off-the-record) one about the real reasons behind certain well-known laptop manufacturer’s batteries bursting into flames. We also got a lot of great advice on smuggling electronic components out of China and other everyday tips & tricks.

    d8d27574b02a11e38f1d121190b145cb_8My favorite conversation was with [Alexander Klink] on his research in Denial of Service attacks using algorithmic complexity of collision resolution in (a priori known) hash functions. Though the original paper is more than two years old, its takeaways can still have a huge impact on all sorts of software and hardware devices out there.

    The general theme of the night was how exciting it is to live in a place like Shanghai, where rapid urban growth and access to manufacturing resources meets a blossoming technology and art scene. It is even more so thanks to places like Xin Che Jian, which make being a “hacker” a socially acceptable thing on the other side of the Great Firewall.

    That said, reading all of Hackaday content still requires a proxy.

    IMG_0769
    IMG_0756
    IMG_0755
    IMG_0753
    IMG_0748
    IMG_0746
    IMG_0744
    IMG_0743
    IMG_0742
    IMG_0740
    IMG_0733
    IMG_0723
    IMG_0720
    IMG_0719
    IMG_0716
    IMG_0715
    Filed under: Featured

  • Lundi, Mars 24, 2014 - 18:00
    Skill Builder: Arduino 101

    ArduinoLeonardoFront_2_450pxEver heard of Arduino? This Primer will help you get started with Arduino and a little bit of coding.

    Read more on MAKE


  • Lundi, Mars 24, 2014 - 18:00
    Don’t Just Go Sticking That Anywhere: Protect the Precious With a USB Wrapper

    This USB Wrapper protects your data from being hacked at public charging stations without slowing down the charging process, from hackaday.

    Oooh, look, a public charging station. Should you trust it? You might get juice jacked. Oh wait, you’ve got a USB Wrapper designed by [Scasagrande] to deny access to your datas.

    This project was inspired by the USB Condom, but the problem with those is that they completely cut out the data lines and limit the charge rate to USB 2.0 (500mA). The data lines are used to communicate information about the charger’s power sourcing capabilities to the device. Many manufacturers short D+ and D- together, but Apple applies specific voltages to those lines.

    [Scasagrande]‘s USB Wrapper gives you options. You can set it to Dedicated Charging Port, Sony, Open Circuit, or Apple. The super-cool part of this hack is for you Apple fanboys. The bottom slider lets you emulate any Apple charger and use any USB cube (including one you may have made) as long as you have that funny cable in your messenger bag. The hardware is open source and available at [Scasagrande]‘s repo.

    Make the jump to see [Scasagrande]‘s nicely detailed video about the project.

    Wrapper

    Read more.

Pages