hackaday.com Archives - 02 July 2016, Saturday

  • Hackaday Prize Entry: DIY Foot Orthotics | Hackaday

    hackaday.com 02 Jul '16, 5am

    If you need a greater detailed view of the pressure distribution you can try a method based on birefringent rings. The base needs to be clear strong and inflexible, with the second layer more flexible and white, or perhaps mirrored. Optionally the nano scale gap can be filled with a f...

  • Blinktronicator’s POV Sends Our Eyebrows Rocketing Skyward https://t.co/RkJuGtocl7

    Blinktronicator’s POV Sends Our Eyebrows Rocketing Skyward | Hackaday

    hackaday.com 02 Jul '16, 2am

    You think you’ve seen everything that there is to see regarding blinking LEDs and then a simple little trick proves you wrong. Our friend [Zach Fredin], aka [Zakqwy], added a pander mode to his blinky board which shows the Hackaday Jolly Wrencher in a Persistence of Vision mode. We lo...

  • What Could Go Wrong: SPI | Hackaday

    hackaday.com 01 Jul '16, 5pm

    Another idea for article: I2C bus. I think there is even more things to go wrong, like misbehaving slave holding SDA, causing bus contention (by the way, do you know how to get out of this? I battled this in one of my projects), proper pull-up resistor values, fast and ultra-fast I2C ...

  • Bridging the Air Gap; Data Transfer via Fan Noise

    Bridging the Air Gap; Data Transfer via Fan Noise | Hackaday

    hackaday.com 01 Jul '16, 11am

    When you want to protect a computer connected to the Internet against attackers, you usually put it behind a firewall. The firewall controls access to the protected computer. However, you can defeat any lock and there are ways a dedicated attacker can compromise a firewall. Really cri...

  • 1024 “Pixel” Sound Camera Treats Eyes to Real-Time Audio | Hackaday

    hackaday.com 01 Jul '16, 8am

    A few years ago, [Artem] learned about ways to focus sound in an issue of Popular Mechanics. If sound can be focused, he reasoned, it could be focused onto a plane of microphones. Get enough microphones, and you have a ‘sound camera’, with each microphone a single pixel. Movies and TV...

  • Hackaday Prize Entry: An MRI Machine | Hackaday

    hackaday.com 01 Jul '16, 5am

    Magnetic resonance imaging devices are one of the most fantastically incredible machines humans have ever built. They’re capable of producing three-dimensional images of living tissue by flipping protons around with a magnetic field. Ninety percent of the population doesn’t know what ...

  • Tutorial on Signal Processing in Linux with Octave – Hackaday

    hackaday.com 01 Jul '16, 3am

    Tutorial on Signal Processing in Linux with Octave Al Williams 14 hours ago Categories: linux hacks Tags: audio processing , digital signal processing , gnu octave , linux , matlab , octave If you’ve taken any digital signal processing classes at a college or university, you’ve probab...

  • Tutorial on Signal Processing in Linux with Octave | Hackaday

    hackaday.com 01 Jul '16, 2am

    If you’ve taken any digital signal processing classes at a college or university, you’ve probably been exposed to MATLAB. However, if you want to do your own work, you might think about Linux and one of the many scientific computing applications available for it. [David Duarte] recent...

  • A Strandbeest Bicycle

    A Strandbeest Bicycle | Hackaday

    hackaday.com 30 Jun '16, 11pm

    “If you’re asking ‘why,’ you don’t get it.” So said [JP] when he told us about his strandbeest bicycle build . After all, who in their right mind would graft a complex multi-leg mechanical walking mechanism to the rear end of a perfectly good bicycle? But to expand on his sentiment, t...

  • Transcend Wifi SD Card Is A Tiny Linux Server – Hackaday

    hackaday.com 30 Jun '16, 10pm

    Transcend Wifi SD Card Is A Tiny Linux Server Gerrit Coetzee 14 hours ago Categories: linux hacks , wireless hacks Tags: openwrt , sd card , server , tiny , wifi [jamesone111] bought a Transcend WifiSD card, presumably for photography, but it may just have been because he heard that t...

  • Transcend Wifi SD Card Is A Tiny Linux Server

    Transcend Wifi SD Card Is A Tiny Linux Server | Hackaday

    hackaday.com 30 Jun '16, 8pm

    [jamesone111] bought a Transcend WifiSD card, presumably for photography, but it may just have been because he heard that they’re actually tiny Linux servers. He read a post about these cards on the OpenWRT forums. They’re all a similar configuration of a relatively large amount of me...

  • Fail Of The Week (in 1996): The 7 Billion Dollar Overflow | Hackaday

    hackaday.com 30 Jun '16, 5pm

    The year was 1996, the European Space agency was poised for commercial supremacy in space. Their new Ariane 5 Rocket could launch two three-ton satellites into space. It had more power than anything that had come before. The rocket rose up towards the heavens on a pillar of flame, car...

  • 200W Laser Bazooka Is Just Silly

    200W Laser Bazooka Is Just Silly | Hackaday

    hackaday.com 30 Jun '16, 3pm

    We weren’t going to run this one, because, well, it’s just ridiculous. But enough of you have browbeat us by sending in tips to the tipline that we’re going to capitulate. We’re not going to name you all by name, because really, you should be ashamed of yourselves. But you know who yo...

  • Makerspace North, from Empty Warehouse to Maker Magnet | Hackaday

    hackaday.com 30 Jun '16, 2pm

    Many makerspaces are run by an organization that provides tools that groups or individuals use, along with qualification courses for select tools. Makerspace North, on the other hand, provides the space and lets the community provide the maker component. The result is a variety of lar...

  • Die Photos Of A Runner’s RFID Chip | Hackaday

    hackaday.com 30 Jun '16, 11am

    A mass participation sporting event such as a road race presents a significant problem for its record keepers. It would be impossible to have ten thousand timekeepers hovering over stopwatches at the finish line, so how do they record each runner’s time? The answer lies in an RFID chi...

  • A Hydra Of A 3D Printer | Hackaday

    hackaday.com 30 Jun '16, 8am

    3D printers are great for producing one thing, but if you need multiple copies, the workflow quickly starts to go downhill. The solution? Build a 3D printer with multiple print heads , capable of printing four objects in the same amount of time it takes to print one. This build is an ...

  • Hackaday Prize Entry: Invisible | Hackaday

    hackaday.com 30 Jun '16, 5am

    [Kate Reed] found a quote by a homeless person that said “No one sees us”, which led her to exploring what it actually means to be invisible — and if we actually choose to be invisible by hiding away our emotions, sexual preference, race or income. She realized that too often, we choo...

  • Wireless Robotic Gripper With Haptic Feedback

    Wireless Robotic Gripper With Haptic Feedback | Hackaday

    hackaday.com 29 Jun '16, 11pm

    We’re not sure what kind of, “High School,” [Sam Baumgarten] and [Graham Hughes] go to that gave them the tools to execute their robotic gripper so well . We do know that it was not like ours. Apparently some high schools have SLS 3D printers and Solidworks. Rather than a grumpy shop ...

  • Denver Mini Maker Faire Roundup | Hackaday

    hackaday.com 29 Jun '16, 8pm

    Who knew that Colorado had so many maker- and hackerspaces? Colorado Makerhub , that’s who. They provide a portal to everything maker-related in Colorado, and they were in attendance along with most of the ‘spaces within a 50-mile radius of the city. Denver’s own Denhac brought a huge...

  • 3D Printed Zoetrope Sculpture squashes 4 Dimensions into 3 | Hackaday

    hackaday.com 29 Jun '16, 6pm

    This fascinating project manages to be both something new and something old done in a new way. Artist [Akinori Goto] has used 3D printing to create a sort of frameless zoetrope . It consists of a short animation of a human figure, but the 3D movements of that figure through time are “...

  • 3D Printed Zoetrope Sculpture squashes 4 Dimensions into 3 | Hackaday

    hackaday.com 29 Jun '16, 6pm

    This fascinating project manages to be both something new and something old done in a new way. Artist [Akinori Goto] has used 3D printing to create a sort of frameless zoetrope . It consists of a short animation of a human figure, but the 3D movements of that figure through time are “...

  • The EAGLE has landed: at Autodesk!

    The EAGLE has landed: at Autodesk! | Hackaday

    hackaday.com 29 Jun '16, 4pm

    Maybe i’m too deep into professional electronics design, but I really can’t see any scenario where the schematic symbol in your schematic should not include all the information, including footprint-references too. The only exception i could see, is (as an Altium user) if you work with...

  • Reverse Engineering The OWON SDS7102 Oscilloscope | Hackaday

    hackaday.com 29 Jun '16, 3pm

    It is something of a rite of passage for an electronics enthusiast, the acquisition of a first oscilloscope. In decades past that usually meant a relatively modest instrument, maybe a 20MHz bandwidth and dual trace if you were lucky. Higher spec devices were eye-wateringly expensive m...

  • Hackaday Prize Entry: A Universal Glucose Meter | Hackaday

    hackaday.com 29 Jun '16, 5am

    A friend of mine diabetic had pretty much controlled her diabetes type 2 with a proper low-carbs diet. She used to inject insulin and pop glucophage pills. Yet, she kept monitoring herself. One day, her blood glucose shot up dramatically. She injected insulin and felt really bad. She ...

  • Analog Guts Display GPS Velocity in this Hybrid Speedometer | Hackaday

    hackaday.com 29 Jun '16, 1am

    Funny how technology evolves… it seems to be easier for a hobbyist to build a system that relies on multiple satellites hundreds of miles high up in the sky (actually space) then it would be to connect to the can-bus of the car just a few feet of cable length away. This is an ode to t...

  • One Man’s Journey To Build Portable Concrete 3D Printer Produces Its First Tiny ...

    One Man’s Journey To Build Portable Concrete 3D Printer Produces Its First Tiny House | Hackaday

    hackaday.com 28 Jun '16, 10pm

    [Alex Le Roux] want to 3D print houses. Rather than all the trouble we go through now, the contractor would make a foundation, set-up the 3D printer, feed it concrete, and go to lunch. It’s by no means the first concrete printer we’ve covered , but the progress he’s made is really int...

  • Inside the Supplyframe Design Lab on Opening Night

    Inside the Supplyframe Design Lab on Opening Night | Hackaday

    hackaday.com 28 Jun '16, 7pm

    Sophi Kravitz put in a lot of work to design the Residency Program. She has a background as an artist and that space has proven that residencies are great for everyone. Modeling the concept in a hardware space helps realize the idea that hardware creation is art. In addition to this l...

  • Reverse Engineering Quadcopter Protocols

    Reverse Engineering Quadcopter Protocols | Hackaday

    hackaday.com 28 Jun '16, 6pm

    Necessity is the mother of invention, but cheap crap from China is the mother of reverse engineering. [Michael] found a very, very cheap toy quadcopter in his local shop, and issued a challenge to himself. He would reverse engineer this quadcopter’s radio protocol . His four-post seri...

  • Retrotechtacular: ASCII Art in the 19th Century | Hackaday

    hackaday.com 28 Jun '16, 5pm

    I’d like to offer a correction: There were VERY FEW actual Baudot/Murray Teletype machines that had a ‘backspace’ capability. This often required several ‘Mod Kits” added to existing machines to provide this function. The ‘multiple strike’ effects seen in the Nixon image were accompli...

  • Serially, Are You Syncing or Asyncing? | Hackaday

    hackaday.com 28 Jun '16, 2pm

    “The telegraph system considers an idle line to be high. With the signal line held high operators could detect physical breaks in the line because the signal dropped to zero. To send a message a telegraph operator moved a slide on the key to “break” the line. The slider was put back w...