hackaday.com Archives - 03 June 2015, Wednesday

  • Solving Rubik’s Cube With An FPGA

    Solving Rubik’s Cube With An FPGA | Hackaday

    hackaday.com 02 Jun '15, 11pm

    For their final project for ECE 5760 at Cornell, [Alex], [Sungjoon], and [Rameez] are solving Rubik’s Cubes . They’re doing it with an FPGA, with homebrew robot arms to twist and turn a rainbow cube into the correct position. First, the mechanical portion of the build. The team are us...

  • Fail Of The Week: The Deadliest Multimeter

    Fail Of The Week: The Deadliest Multimeter | Hackaday

    hackaday.com 02 Jun '15, 8pm

    Need a good multimeter? The Fluke 17B is an excellent basic meter that will last your entire career. It’s also $100 USD. Need something cheaper? Allow me to introduce the AIMOmeter MS8217. On the outside, it’s a direct copy of the Fluke 17b, right down to the screen printing but under...

  • Retrotechtacular: Cover Your CONUS with OTH-B Radar | Hackaday

    hackaday.com 02 Jun '15, 5pm

    Google wiki for Jindalee (Jindalee Operational Radar Network) system in Australia. A brief excerpt: The JORN network is operated by No. 1 Radar Surveillance Unit RAAF (1RSU). Data from the JORN sites is fed to the JORN Coordination Centre at RAAF Base Edinburgh where it is passed on t...

  • My Robot Army @ Maker Faire | Hackaday

    hackaday.com 02 Jun '15, 2pm

    For a few years now I’ve been developing an interactive army of delta robots. This ongoing project is fueled by my desire to control many mechanical extremities like an extension of my body (I’m assuming I’m not the only one who fantasizes about robots here). Since my army doesn’t hav...

  • Cheap Hot End Modification Allows Easy Future Repairs | Hackaday

    hackaday.com 02 Jun '15, 8am

    We’ve seen a lot of experimenting with 3D printers over the years, and that is a good thing. However, [Tyler] has had a bad experience with experimenting. He has a Printrbot Simple Metal and decided to try nylon weed wacker line. Since he wanted to get straight to printing, he skipped...

  • Hackaday Prize Entry: Dr. DAC | Hackaday

    hackaday.com 02 Jun '15, 5am

    The theme of this year’s Hackaday Prize is. ‘build something that matters.’ A noble goal, but there’s also a second prize – the Best Product prize – that is giving $100k to one lucky team who can appeal to people with open jaws and wallets. It’s a fabulous prize that also includes a s...

  • Optimizing AVR LCD Libraries | Hackaday

    hackaday.com 02 Jun '15, 2am

    A while ago, [Paul Stoffregen], the creator of the Teensy family of microcontrollers dug into the most popular Arduino library for driving TFT LCDs. The Teensy isn’t an Arduino – it’s much faster – but [Paul]’s library does everything more efficiently. Even when using a standard Ardui...

  • Hot Swappable Raspberry Pi Rack | Hackaday

    hackaday.com 01 Jun '15, 11pm

    The Raspberry Pi has inspired many a hacker to take the inexpensive (~$35) microcomputer to the enterprise level. From bitcoin miners to clusters, the Raspberry Pi has found itself at the heart of many large-scale projects. On hackaday.io [Dave] served up his own contribution with his...

    1. Make Your Own Rack Server rubyflow.com 01 Jun '15, 12am
  • Intel Buys Altera For $16.7 Billion | Hackaday

    hackaday.com 01 Jun '15, 8pm

    Intel, CPU manufacturer we all know and love, will buy Altera , makers of fine FPGAs, for $16.7 Billion. While most of the news about this deal focuses on the future of FPGAs in the datacenter, getting Altera IP into Intel fab houses is equally interesting. Intel is the current king o...

  • Hackaday Retro Edition: The RadioShack Roomba | Hackaday

    hackaday.com 01 Jun '15, 5pm

    A few years ago, Roombas — everyone’s favorite robotic trash can — graced the pages of Hackaday with reverence. There was nothing this little robot couldn’t do, save for going up stairs. Roomba hacks have died off since then, and these little trash cans have been swallowed up by dumps...

  • 1-Pixel Pacman

    1-Pixel Pacman | Hackaday

    hackaday.com 01 Jun '15, 2pm

    I usually see retro-gaming projects using tiny screens with a fair number of pixels (64×64) but what I really like is the look of making every pixel count. With this in mind I built 1-Pixel Pac-Man , the classic coin-op experience but with characters that consist of just one pixel. Pl...

  • Simple Autonomy with an RC Boat | Hackaday

    hackaday.com 01 Jun '15, 11am

    [Vlad] wrote in to tell us about his latest project—an RC boat that autonomously navigates between waypoints . Building an autonomous vehicle seems like a really complicated project, but [Vlad]’s build shows how you can make a simple waypoint-following vehicle without a background in ...

  • Pool/Hot Tub Monitoring and Data Collection | Hackaday

    hackaday.com 01 Jun '15, 8am

    Pools and hot tubs, although enjoyable, require monitoring and maintenance to keep the water clean and clear. [bhuebner] didn’t like having to constantly testing his hot tub’s vitals using test strips and water test kits. In an effort to autonomously monitor his hot tub’s water, he ca...

  • Hackaday Prize Entry: A Braille Computer | Hackaday

    hackaday.com 01 Jun '15, 5am

    As with all devices meant for a very small percentage of the population, computing equipment for the blind is very, very expensive. A Braille typewriter – a relatively simple machine that puts dots on a piece of paper – costs about $700 USD. Need a Braille interface for a computer? Yo...

  • Homemade Table Saw Starts With Circular Saw | Hackaday

    hackaday.com 01 Jun '15, 2am

    How often do us tinkerers go out into our basement/garage shop and don’t have the correct tool for the job? Most would say it happens more often than they would prefer. One option would be to buy the tool, but it is always more fun to build what you need! [kadambi] was in need of a ta...

  • Hackaday Links: May 31, 2015 | Hackaday

    hackaday.com 31 May '15, 11pm

    Back in the mid-70s, [Paul Horowitz] (who has an incredible Wikipedia entry , by the way) started teaching Physics 123 at Harvard. Simple electronic circuits, solving problems with silicon; simple stuff like that. His lecture and lab notes started getting a following, and after Xeroxi...

  • Hackaday Prize Worldwide: Shenzhen | Hackaday

    hackaday.com 31 May '15, 8pm

    One of the adventures we’ve always wanted to take part in is Hacker Camp Shenzhen which is run by Hackaday alumnus and Hackaday Prize Judge [Ian Lesnet]. The week-long camp leverages [Ian’s] knowledge of the area, manufacturers, markets, and people to provide tours and workshops for t...

  • Nixie Clock Uses Ingenious Software C

    Nixie Clock Uses Ingenious Software RTC | Hackaday

    hackaday.com 31 May '15, 8pm

    There’s something about Nixie Tube Clocks that keeps drawing hackers to build their own iterations, even if its been done a gazillion times before. Their depleting supply, and the high voltage drivers to control them, makes it all the more interesting. [Pete Mills], a veteran of sever...

  • Dual Pet Food Dispenser is Doubly Convenient

    Dual Pet Food Dispenser is Doubly Convenient | Hackaday

    hackaday.com 31 May '15, 5pm

    Does your dog or cat wake you up every morning, demanding to be fed? Maybe you feed Sparky in the evenings instead. But doesn’t that limit your spontaneity? It sure limited [Jorge]’s after-work plans. He has two dogs that eat the same type of food, but in different quantities. This wa...

  • Communicating from inside your dreams | Hackaday

    hackaday.com 31 May '15, 4pm

    Lucid dreams definitely exist, I’ve had several in my life. I’m not against you exploring this interest and sharing your results with the world, that’s fantastic (even if I think it is misguided). It’s up to blog aggregators such as HAD to do their best not to become rapid believers w...

  • More GPIOs For The ESP8266 | Hackaday

    hackaday.com 31 May '15, 2pm

    The ESP8266 is an incredible piece of hardware; it’s a WiFi module controllable over a serial port, it’s five freaking dollars, and if that’s not enough, there’s a microcontroller on board. Until there’s a new radio standard, this is the Internet Of Things module. The most common vers...

  • From Scrap To Sword: Casting Pewter

    From Scrap To Sword: Casting Pewter | Hackaday

    hackaday.com 31 May '15, 11am

    [TheBackyardScientist] has been living up to his name, this time by casting a pewter sword in his yard. Pewter is a soft alloy of mostly (85–99%) tin along with copper, antimony and bismuth. Older pewter castings often used lead as well. The great thing about pewter is its low melting...

  • Rotary Phone Converted for Mobile Use

    Rotary Phone Converted for Mobile Use | Hackaday

    hackaday.com 31 May '15, 8am

    As a society we are moving away from land line phones while mobile devices are becoming more and more prevalent. It is not uncommon for people to only have a cell phone and completely skip out on the corded home phone. While this move may be for convenience, there is one difference be...

  • Transparent Alarm Clock Runs Linux

    Transparent Alarm Clock Runs Linux | Hackaday

    hackaday.com 31 May '15, 5am

    [Benoit] was using an extremely old alarm clock which normally ran on mains power, and he plugged it in to his computer’s UPS to keep it operational during power outages. He noticed that when the UPS switched on that the clock would run fast, though, and apparently it was keeping time...

  • Juice-Spewing Wind Turbine Bootstrapped from Bike Parts

    Juice-Spewing Wind Turbine Bootstrapped from Bike Parts | Hackaday

    hackaday.com 31 May '15, 2am

    Wind Turbines are great, they let us humans harness the energy of the wind. Wind is free and that is good, but spending a ton of money on a wind turbine setup begins to make the idea less appealing. [Ted] has spent many years building low cost wind turbines and this one is not only si...

  • Interactive Fur Mirror Follows Your Every Move | Hackaday

    hackaday.com 30 May '15, 11pm

    We think artist [Daniel Rozin] spent a bit too much time wondering if he could make an interactive fur mirror, without wondering if he should. The result is… strange — to say the least. It’s called the PomPom Mirror, and its one of many interactive installations in the Descent With Mo...

  • Ducted Fan Drone Uses 1 Rotor for VTOL

    Ducted Fan Drone Uses 1 Rotor for VTOL | Hackaday

    hackaday.com 30 May '15, 8pm

    Multi-rotor fixed-pitch aircraft – quad, hexa, octa copters – are the current flavor of the season with hobby and amateur flight enthusiasts. The serious aero-modeling folks prefer their variable-pitch, single rotor heli’s. Defense and military folks, on the other hand, opt for a fixe...

  • Hacklet 49 – Weather Display Projects

    Hacklet 49 – Weather Display Projects | Hackaday

    hackaday.com 30 May '15, 5pm

    Everyone wants to know what the weather is, and what it is going to be. Today’s internet enabled forecasts give us continuous streams of current weather data and predictions from any of several computer models. Couple that with data from an on-site station, and you’ve got a lot of inf...

  • 50 Shades of Gray Water Reuse

    50 Shades of Gray Water Reuse | Hackaday

    hackaday.com 30 May '15, 2pm

    The system is very simple and can be easily made for almost any bathroom. By making a zig-zag of PVC pipe underneath the sink, he’s created a simple grey water reservoir sized for his toilet’s flushing capability. And if you use too much water, it just backs into the drain — think of ...

  • Model House Models House, Vice-Versa | Hackaday

    hackaday.com 30 May '15, 11am

    [Eric Tsai] is on a home-automation rampage. Not content with the usual smartphone-based GUIs, [Eric] built a cardboard model house that models his house . Open the garage door, and the model house’s garage door opens. Open the real front door, and a tiny servo motor opens the cardboa...