hackaday.com Archives - 27 November 2014, Thursday

  • Improving the T-962 Reflow Oven

    Improving the T-962 Reflow Oven | Hackaday

    hackaday.com 27 Nov '14, 3pm

    The T-962A is a very popular reflow oven available through the usual kinda-shady retail channels. It’s pretty cheap, and therefore popular, and the construction actually isn’t abysmal. The controller for this oven is downright terrible, and [wj] has been working on a replacement firmw...

  • HDMI Out With A Brick Game Boy | Hackaday

    hackaday.com 27 Nov '14, 12pm

    A few years ago, some vastly clever people figured out how to listen in on the LCD display on the classic brick Game Boy from 1989. There have been marked improvements over the years, including a few people developing VGA out for the classic Game Boy. Now, the bar has been raised with...

  • Darth Vader Magic 8 Ball

    Darth Vader Magic 8 Ball | Hackaday

    hackaday.com 27 Nov '14, 9am

    Imagine that your wife likes Darth Vader and wants help making important life choices. (Who doesn’t?) [bithead942] solves both problems in one project by gutting a Lego clock and making a talking animatronic Darth Vader 8-Ball-style oracle . Now his wife can simply press Darth’s head ...

  • A 16-voice Homebrew Polyphonic Synth

    A 16-voice Homebrew Polyphonic Synth | Hackaday

    hackaday.com 27 Nov '14, 6am

    Homebrew synths – generating a waveform in a microcontroller, adding a MIDI interface, and sending everything out to a speaker – are great projects that will teach you a ton about how much you can do with a tiny, low power uC. [Mark] created what is probably the most powerful homebrew...

  • Custom Raspberry Pi Thermostat Controller

    Custom Raspberry Pi Thermostat Controller | Hackaday

    hackaday.com 27 Nov '14, 3am

    Thermostats can be a pain. They often only look at one sensor in a multi-room home and then set the temperature based on that. The result is one room that’s comfortable and other rooms that are not. Plus, you generally have to get up off the couch to change the temperature. In this da...

  • Anthropomorphizing Microprocessors | Hackaday

    hackaday.com 27 Nov '14, 12am

    Vintage microprocessors usually do something, be it just sitting in an idle loop, calculating something, or simply looking cool in a collector’s cabinet. [Lee] has come up with a vastly cooler use for an old microprocessor: he’s anthropomorphized it by wiring LEDs up to the address li...

  • An Engineer’s Guide to Cooking the Perfect Turkey | Hackaday

    hackaday.com 26 Nov '14, 9pm

    It’s almost that special time of year again where we all get together and use our families as guinea pigs for new cooking techniques and untested recipes! Some of us are seasoned pros at preparing the big bird of tradition, while others are still experimenting year after year with hop...

  • Scope Noob: Probing Alternating Current | Hackaday

    hackaday.com 26 Nov '14, 6pm

    How to measure “mains” signals directly with ab o’scope. DANGER HIGH VOLTAGE PRESENT, ALWAYS COVER EXPOSED WIRING with some type of insolation. Assumptions – 2 channel scope (minimum) with input range higher than high voltage to be measured. Same for scope probes, must be capable of h...

  • Easy and Effective Way to Measure PWM… Without a Scope! | Hackaday

    hackaday.com 26 Nov '14, 3pm

    Sometimes when a project is coming together, you need to cobble a tool together to get it completed. Whether it’s something very involved, like building a 3D printer to fabricate custom parts, or something relatively simple, like wiring a lightbulb and a battery together to create a s...

  • Telepresence Robot Demo Unit Breaks Free of It’s Confinement

    Telepresence Robot Demo Unit Breaks Free of It’s Confinement | Hackaday

    hackaday.com 26 Nov '14, 12pm

    What happens when you put a telepresence robot online for the world to try out for free? Hilarity of course. Double Robotics is a company that builds telepresence robots. The particular robot in question is kind of like a miniature Segway with a tablet computer on top. The idea is you...

  • Turkey Sous Vide

    Turkey Sous Vide | Hackaday

    hackaday.com 26 Nov '14, 9am

    It’s time once again for Americans to gorge themselves on hormone-laced meats covered in several sauces and gravies, all of which inexplicably contain corn syrup. It’s also Thanksgiving this Thursday, so there’s that, too. If you have a turkey defrosting somewhere, you’ve probably gon...

  • Simple Terminal Hack is Fit For Hollywood

    Simple Terminal Hack is Fit For Hollywood | Hackaday

    hackaday.com 26 Nov '14, 6am

    We’ve all seen the cheesy hacker scenes in movies and on TV. Three dimensional file system browsers, computer chip cityscapes, and other ridiculous visualizations to make the dull act of sitting at a keyboard look pretty on the silver screen. While real hackers know those things are o...

  • Open Sourcing Satellite Telemetry

    Open Sourcing Satellite Telemetry | Hackaday

    hackaday.com 26 Nov '14, 3am

    Launched in 1978, the International Sun/Earth Explorer 3 was sent on a mission to explore the Earth’s interaction with the sun. Several years later, the spacecraft changed its name to the International Cometary Explorer, sent off to explore orbiting ice balls, and return to Earth earl...

  • Ray tracing on an Arduino

    Ray tracing on an Arduino | Hackaday

    hackaday.com 26 Nov '14, 12am

    [Greg] implemented a simple ray tracer for Arduino as a fun exercise and a way to benchmark the processor. He started out with the Moller-Trumbore algorithm, a common ray-tracing algorithm that calculates the intersection of a ray with a triangular plane without doing any pre-calculat...

  • Retrotechtacular: The Construction of Wooden Propellers

    Retrotechtacular: The Construction of Wooden Propellers | Hackaday

    hackaday.com 25 Nov '14, 9pm

    During World War I, the United States felt they were lagging behind Europe in terms of airplane technology. Not to be outdone, Congress created the National Advisory Committee for Aeronautics [NACA]. They needed to have some very large propellers built for wind tunnel testing. Well, t...

  • Announcing The Trinket Everyday Carry Contest

    Announcing The Trinket Everyday Carry Contest | Hackaday

    hackaday.com 25 Nov '14, 6pm

    Now that we’ve recovered from our Munich party and the awarding of The Hackaday Prize, we’re ready to announce our latest contest. We’ve been having a lot of fun with our Trinket Pro boards, both the 10th anniversary edition and the new Hackaday.io branded models . While we were solde...

  • Hackaday Interview: [Grant Imahara]

    Hackaday Interview: [Grant Imahara] | Hackaday

    hackaday.com 25 Nov '14, 3pm

    We had a chance to interview [Grant Imahara ] at the 2014 Electronica conference in Munich, Germany. If you don’t recognize [Grant’s] name you’ll probably recognize his face. He’s been on the cast of the television show Mythbusters for about 10 years now. We heard recently that he was...

  • Better SPI Bus Design

    Better SPI Bus Design | Hackaday

    hackaday.com 25 Nov '14, 12pm

    Quick, how do you wire up an SPI bus between a microcontroller and a peripheral? SCK goes to SCK, MISO goes to MISO, and MOSI goes to MOSI, right? Yeah. You’ll need to throw in a chip select pin, but that’s pretty much it. Just wires, and it’ll most likely work. Now add a second devic...

  • Enhanced Coffee Brewer Knows How Much of a Caffeine Addict You Are

    Enhanced Coffee Brewer Knows How Much of a Caffeine Addict You Are | Hackaday

    hackaday.com 25 Nov '14, 9am

    Who should chip in the most to restock the community coffee supply at work is a common point of contention at some offices. This RFID infused coffee brewer called Juraduino by [Oliver Krohn] solves the issue at his workplace once and for all by logging how much is being consumed by ea...

  • A UV Lightbox For Curing Prints

    A UV Lightbox For Curing Prints | Hackaday

    hackaday.com 25 Nov '14, 6am

    With resin printers slowly making their way to hackerspaces and garages the world over, there is a growing need for a place to cure these UV resin prints. No, they don’t come out of the machine fully cured, they come out fully solid. And no, we’re not just leaving them in the sun, bec...

  • Hacking the Crayola Digital Light Designer

    Hacking the Crayola Digital Light Designer | Hackaday

    hackaday.com 25 Nov '14, 3am

    [Harry] wrote in with his hack of the Crayola Light Designer . The Light Designer is a pretty unique toy that lets kids write on a cone-shaped POV display with an infrared light pen. [Harry] cracked one open and discovered it has a spinning assembly with a strip of 32 RGB LEDs for the...

  • Chicken-powered Pendulum

    Chicken-powered Pendulum | Hackaday

    hackaday.com 25 Nov '14, 12am

    Every once in a while we get sent a link that’s so cute that we just have to post it. For instance: this video from [Ludic Science]. It’s a wind-up chicken toy that kicks a pendulum back and forth. No more, no less. But before you start screaming “NOT A HACK!” in the comments below, t...

  • Simple Thermal Imager with a Lepton Module

    Simple Thermal Imager with a Lepton Module | Hackaday

    hackaday.com 24 Nov '14, 9pm

    [Andrew] designed a simple thermal imager using the FLIR Lepton module, an STM32F4 Nucleo development board, and a Gameduino 2 LCD. The whole design is connected using jumper wires, making it easy to duplicate if you happen to have all the parts lying around (who doesn’t have a bunch ...

  • Central European Computer Collecting

    Central European Computer Collecting | Hackaday

    hackaday.com 24 Nov '14, 6pm

    During Hackaday’s short trip to Czech, we were lucky enough to run into someone who had recently had one of his projects featured on Hackaday. It’s [Martin]‘s multi-target IDE for 8-bit CPUs , written entirely in JavaScript, and a full development suite for anything with a 6502, 6800,...

  • Direct Digital Synthesis (DDS) Explained by [Bil Herd]

    Direct Digital Synthesis (DDS) Explained by [Bil Herd] | Hackaday

    hackaday.com 24 Nov '14, 3pm

    One of the acronyms you may hear thrown around is DDS which stands for Direct Digital Synthesis. DDS can be as simple as taking a digital value — a collection of ones and zeroes — and processing it through a Digital to Analog Converter (DAC) circuit. For example, if the digital source...

  • Fixing Ghost Touch In The OnePlus One

    Fixing Ghost Touch In The OnePlus One | Hackaday

    hackaday.com 24 Nov '14, 12pm

    The OnePlus One is the flagship phone killer for 2014, available only by invite, and thus extremely cool. So far it’s a limited production run and there will, of course, be problems with the first few thousand units. When [vantt1] got his One, he noticed a few issues with the touch sc...

  • Custom Filaments With A Filastruder

    Custom Filaments With A Filastruder | Hackaday

    hackaday.com 24 Nov '14, 9am

    A while ago, when 3D printing was the new hotness, a few people looked around and said, ‘our printers are open source, why can’t we just build the machines that make our 3D printing filament?’ There was a $40,000 prize for the first person to build an open source filament extruder, re...

  • Cairo Hackerspace Gets A $14 Projector

    Cairo Hackerspace Gets A $14 Projector | Hackaday

    hackaday.com 24 Nov '14, 6am

    The Cairo hackerspace needed a projector for a few presentations during their Internet of Things build night, and of course Friday movie night. They couldn’t afford a real projector, but these are hackers. Of course they’ll be able to come up with something. They did. They found an ol...

  • A Simple Runner’s GPS Logger | Hackaday

    hackaday.com 24 Nov '14, 3am

    [Daniel] received a grant from the University of Minnesota’s ECE Envision Fund and was thus responsible for creating something. He built a runner’s GPS logger , complete with a screen that will show a runner the current distance travelled, the time taken to travel that distance, and n...

  • Hackaday Links: November 23, 2014 | Hackaday

    hackaday.com 24 Nov '14, 12am

    The 2015 Midwest RepRap Festival, a.k.a. the MRRF (pronounced murf) was just announced a few hours ago . It will be held in beautiful Goshen, Indiana. Yes, that’s in the middle of nowhere and you’ll learn to dodge Amish buggies when driving around Goshen, but surprisingly there were 1...