hackaday.com Archives - 26 July 2014, Saturday

  • Hacklet #8: The Animals

    Hacklet #8: The Animals

    hackaday.com 25 Jul '14, 8pm

    Cat’s don’t get all the love though, plenty of engineers and hackers have dogs around the house. [Colin] loves his dog, but he and his family were forgetting to feed it. He created Feed the Dog to help the household keep its four-legged member from going hungry. [Colin] tried a microc...

  • Bil Herd: Computing with Analog

    Bil Herd: Computing with Analog

    hackaday.com 25 Jul '14, 5pm

    When I was young the first “computer” I ever owned was an analog computer built from a kit. It had a sloped plastic case which had three knobs with large numerical scales around them and a small center-null meter. To operate it I would dial in two numbers as indicated by the scales an...

  • You Might Be Cool, But You’re Not Gas Turbine Motorcycle Cool

    You Might Be Cool, But You’re Not Gas Turbine Motorcycle Cool

    hackaday.com 25 Jul '14, 2pm

    The engine inside [Anders]‘s bike is a gas turbine – not a jet engine. There’s really not much difference in the design of these engines, except for the fact that a turbine dumps all the energy into a drive shaft, while a true jet dumps all the energy into the front bumper of the car ...

  • The Entire Commodore 64 Library In Your Pocket

    The Entire Commodore 64 Library In Your Pocket

    hackaday.com 25 Jul '14, 11am

    [sweetlilmre] is just beginning his adventures in retrocomputing, and after realizing there were places besides eBay to buy old computers, quickly snagged a few of the Amigas he lusted after in his youth. One of the machines that didn’t make it into his collection until recently was a...

  • Electric “Microkart” Has Tons of Kick

    Electric “Microkart” Has Tons of Kick

    hackaday.com 25 Jul '14, 8am

    Now you may have noticed it looks a bit small — because it is. It’s really more of a Micro-Kart, but that’s okay because [Ganharr] is winning a father-of-the-year award for building it for his kid! It features two 2kW (~3HP) brushless electric motors, which independently drive the rea...

  • Custom CAN System Logs Motorcyle Data like Magic

    Custom CAN System Logs Motorcyle Data like Magic

    hackaday.com 25 Jul '14, 5am

    A student team at Ohio State University has designed and built a custom Controller Area Network (CAN) data acquisition system complete with a sensor interface , rider display , and a Linux-based data logger for a RW-2x motorcyle . They call their small, convenient micro-controller cir...

  • A Better, Cheaper Smartphone Thermal Imager

    A Better, Cheaper Smartphone Thermal Imager

    hackaday.com 25 Jul '14, 2am

    For the last few years, the prices of infrared thermal imaging devices have fallen through the floor, down from tens of thousands of dollars a decade ago, to just about a grand for a very high-resolution device. This dramatic drop in price was brought about by new sensors, and at the ...

  • A New Approach to Robotic Walking Looks More Like Kinetic Art

    A New Approach to Robotic Walking Looks More Like Kinetic Art

    hackaday.com 24 Jul '14, 11pm

    A New Approach to Robotic Walking Looks More Like Kinetic Art July 24, 2014 By James Hobson 11 Comments Here’s a really cool application of 3D printing and robotics by a fellow named [Maundy] – He’s created a very unique kinetic robot which relies on gravity to walk around. All the el...

  • Adding GPIOs To The Raspberry Pi With The Camera Interface

    hackaday.com 24 Jul '14, 8pm

    The Raspberry Pi Model B+ was just released, and now everyone who picks one of those up has a few more GPIO pins to play around with. For the millions of people with the two-year-old version of the Pi, we’re still stuck with the same old, same old: 17 GPIOs on the big header, and that...

  • THP Hacker Bio: Kenji Larsen

    THP Hacker Bio: Kenji Larsen

    hackaday.com 24 Jul '14, 5pm

    Extend the time from now until I die (and stabilize bio-age at a good spot). Aubrey de Grey, hello! Help him, please – everyone help him if you can. I am trying to figure out how I can help. So I guess the top item is, the “How can I help Aubrey de Grey?” Project. (If this one works, ...

  • 20,000 Hackers

    20,000 Hackers

    hackaday.com 24 Jul '14, 3pm

    What a pleasant thing to wake up and realize that we now have more than 20,000 Hackers on Hackaday.io . It wasn’t even two months ago that we celebrated passing the 10k mark . While we’re talking numbers, how about 2,075 projects , and 148 hackerspaces ? But what’s in a number? It’s w...

  • A Lesson in Blind Reverse Engineering – Signals Intelligence

    hackaday.com 24 Jul '14, 2pm

    @Bill Sweatman – You’ve got to be kidding us right? Data-Mining? The 1st thing in DM is to pre-format or index the data so it can be easily searched. If you don’t have some sort of standardized search method you may miss a lot of hits. That part becomes mind-numbing trying to make sur...

  • Fantastic Tach Is Strangely Called Tachtastic

    Fantastic Tach Is Strangely Called Tachtastic

    hackaday.com 24 Jul '14, 11am

    There are two attachment options for sensing the RPM. One is a beam-break style where the IR emitter is on one side of the object and the receiver is on the other. This type of sensor would work well with something like a fan, where the blades would break the IR beam as they passed by...

  • Zero-Dollar AC System Looks Funny But Works Well

    Zero-Dollar AC System Looks Funny But Works Well

    hackaday.com 24 Jul '14, 8am

    Summer is here and with summer comes hot days. You probably know that us humans get uncomfortable if the temperature rises too much. Sure, we could turn on the loud and inefficient window AC unit and try to stay mildly comfortable while the electric company pick-pockets pennies from o...

  • Fishing for Radio Signals With the Moxon Antenna

    Fishing for Radio Signals With the Moxon Antenna

    hackaday.com 24 Jul '14, 5am

    [Bill Meara] has finished his latest project, a Moxon antenna for HF on 17 meters . [Bill] is well-known here on Hackaday. When not building awesome radios , he can be found ranting about ham radio . His new antenna turned out to be a true hack. He even used a hacksaw to build it! The...

  • Red Bull Creation Winners: Maker Twins

    hackaday.com 24 Jul '14, 2am

    This year’s Red Bull Creation theme “Reinvent the Wheel” was pretty broad, but the Maker Twins managed to incorporate it quite closely with their winning project which was completed in under 72 hours. They took the idea of urban farming and figured out one way to make farmer’s markets...

  • Hacked e-cigarette vaporizer can send smells…in space!

    Hacked e-cigarette vaporizer can send smells…in space!

    hackaday.com 23 Jul '14, 11pm

    This 3D printed scent distributor was put together by eight people from three states during the 2014 NYC NASA Space Apps Challenge. The team went on to take 1st place in the competition. The project is called Senti8 and uses a FLORA Arduino micro-controller and a Neopixel LED strip pu...

  • THP Entry: Cut Energy Consumption by 30 percent with this WiFi XBee Setup

    THP Entry: Cut Energy Consumption by 30 percent with this WiFi XBee Setup

    hackaday.com 23 Jul '14, 8pm

    Let’s be honest. Paying electricity bills sucks. The amount paid is always too much, and the temperatures in the building are rarely set at a comfortable level. But now, with the help of this DIY Climate Control system , power-users can finally rejoice knowing that the heating and coo...

  • Flight For Your Right (And Do It By Friday)

    hackaday.com 23 Jul '14, 5pm

    If you leave comments, post your tracking number/ comment text. Who knows when they will get around to “approving’ your comments.. 1jy-8ddt-8c2z It is now more important than ever that the FAA work closely with model aircraft hobbyists to nurture the industry rather than hinder it. Wi...

  • DIY Conductive Paint For All Your Wearable Needs

    DIY Conductive Paint For All Your Wearable Needs

    hackaday.com 23 Jul '14, 2pm

    I’ve been using model aircraft dope and graphite as grain filler for years, it gives a much nicer finish than talc, enamel “sticks” quite well. As a bonus it seems to be good for shielding. If you want some flexibility add some glycerine, a lot of texts say “a few drops”, but I’ve fou...

  • HOPE X: Wireless Tor Proxies And Sharing TrueCrypt Volumes

    hackaday.com 23 Jul '14, 11am

    When you’re at HOPE, of course you’re going to see a few Tor proxies, but [Jose]‘s is top-notch. It’s a completely portable Tor proxy (.br, Google translation ), battery-powered, with a connection for 4G networks. [Jose]‘s OnionPi setup is based on the Adafruit version , but adds a fe...

  • Talking BeagleBoard with [Jason Kridner]

    hackaday.com 23 Jul '14, 5am

    [Jason Kridner] is a member of the i3 Detroit hackerspace and during the Hackaday meet-up we were able to spend a few minutes talking about what’s going on with BeagleBoard right now. For those of you that don’t know, BeagleBoard is a non-profit foundation which guides the open hardwa...

  • Smart Hat Puts Your Head in the Game

    Smart Hat Puts Your Head in the Game

    hackaday.com 23 Jul '14, 12am

    An aspheric loupe magnifier lens lets him see the display even though it sits around 5cm from his eye. No outside light is allowed in. Only the guts of the webcam were used to give him the video and microphone. We’ve seen other head mounted displays before, and this one adds to the gr...

  • HOPE X: Creating Smart Spaces With ReelyActive

    hackaday.com 22 Jul '14, 11pm

    When we hear about the Internet of Things, we’re thinking it’s a portable device with a sensor of some kind, a radio module, and the ability to push data up to the Internet. There’s nothing that says a device that puts data on the Internet has to be portable, though, as [Jeff] from Re...

  • USB Rotary Phone: A Lync to the Past

    USB Rotary Phone: A Lync to the Past

    hackaday.com 22 Jul '14, 8pm

    The rotary phone’s dial works using two switches, one that’s open and one that’s closed when no one is dialing. Once dialing is detected, the open switch closes and the closed switch clicks according to the dialed digit (ten clicks for 0). [Ivan] also reads the switch hook state and h...

  • Judge Spotlight: Andrew “Bunnie” Huang

    Judge Spotlight: Andrew “Bunnie” Huang

    hackaday.com 22 Jul '14, 5pm

    This week’s Judge Spotlight focuses on [Andrew "Bunnie" Huang]. If you haven’t heard of him you need to pay more attention. His hacker cred goes way back to the original Xbox, which he reverse engineered and laid bare its security flaws. Maintaining his hacker spirit he went on to des...

  • Cold War Clock is all Tubes

    Cold War Clock is all Tubes

    hackaday.com 22 Jul '14, 11am

    Clocks are great projects to build. They serve a real purpose, and there’s a wide variety of ways to implement a unique timepiece. [Hank]‘s Cold War Clock only uses parts and technologies that were available in 1959. It contains no semiconductors, but has an audible alarm and reasonab...

  • Hey There Little Plant. Let’s Be Friends!

    Hey There Little Plant. Let’s Be Friends!

    hackaday.com 22 Jul '14, 8am

    Perhaps, you’re circle of friends is getting too small. Or maybe, you just want to communicate with the leafy, green beings that have rooted themselves in the soil inside your house. If so, this environmental monitoring system will be perfect for you! Created by [Dickson], this projec...

  • Monster 100W LED Flashlight Produces a Whopping 8500lm!

    Monster 100W LED Flashlight Produces a Whopping 8500lm!

    hackaday.com 22 Jul '14, 5am

    The tricky thing about these diodes is that they need a high amount of DC voltage, anywhere from 32-48V typically. [Yannick's] using a 12V sealed lead acid battery coupled with a 600W constant current boost converter which ups it to 32V at around 3.2A. He also managed to find a giant ...

  • What Could You Do With 7 Fingers?

    What Could You Do With 7 Fingers?

    hackaday.com 22 Jul '14, 2am

    A strange thought yes, but MIT researchers think an extra two digits could really make a difference in many people’s lives. And as it turns out, having an extra robotic grasp allows you to do quite a few things single handed . The extra two fingers provide three degrees of freedom eac...