hackaday.com Archives - 22 April 2013, Monday

  • 20 pounds and a gut feeling yields a configurable Rubidium atomic clock source

    20 pounds and a gut feeling yields a configurable Rubidium atomic clock source

    hackaday.com 22 Apr '13, 9pm

    First off, the fact that it’s made for the aerospace industry means that the craftsmanship on it is simply fantastic. The enclosure is machined aluminum and all of the components are glued or otherwise attached to the boards to help them stand up to the high-vibrations often experienc...

  • Connect a Retina display to a regular computer

    Connect a Retina display to a regular computer

    hackaday.com 22 Apr '13, 7pm

    You don’t have to search very long before you find someone raving about the Retina display used in Apple iPads. We’re not going to disagree. These 9.7″ panels pack in a whopping 2048×1536 resolution and the color is fantastic. But we were surprised to hear you can get one of these for...

    Related:
    1. display (Object) apidock.com 24 Apr '13, 2pm
  • Automatic tubular bells given a MIDI interface too

    Automatic tubular bells given a MIDI interface too

    hackaday.com 22 Apr '13, 1pm

    We’ve got to say it… these tubular bells sound awful! They don’t really have a tight pitch center so they sound really out of tune to us. But we think that’s the failing of the instrument itself and not the work which [Tolaemon] did to automate the instrument . There are three main pa...

  • Hackaday Links: Sunday, April 21st, 2013

    hackaday.com 21 Apr '13, 9pm

    First I got rid of that chunk of plastic on the end of my drill. I am referring to that drill-shank grinder that works on the same principle as “hand-tightened lugnuts”. After changing the “chuck” for a keyed Jacobs chuck, I made a chunk of wood with the key imbedded in it’s palm size...

  • Drop-in pcb makes Nintendo Four Score a USB joystick

    hackaday.com 21 Apr '13, 7pm

    The Nintendo Four Score was a controller attachment for the original Nintendo Entertainment System which allowed you to use four controllers at one time. [Simon Inns] wanted to use some original NES controllers on his computer so he developed a drop-in replacement board that converts ...

  • 3D printing some sweet music

    3D printing some sweet music

    hackaday.com 21 Apr '13, 1pm

    If you don’t mind ending up with oddly shaped 3D printed parts you can get your printer to sing to you . The exhibit shown above is doing just that. The Lulzbot is being driven specifically to produce a certain frequency of sound with its stepper motors. The results of a few different...

  • Mood lamp/notifier uses neat modular PCB design

    hackaday.com 20 Apr '13, 9pm

    Not only does this mood lamp which [J. Sutton] built look great, but we love the modular design he adopted when building the circuit boards. If you’re building something that is going to sit on your desk for some time it just has to look good. We think that he achieved that, using a s...

  • GUI window manager on an AVR chip

    GUI window manager on an AVR chip

    hackaday.com 20 Apr '13, 7pm

    This project is reminiscent of the old days when window managers were an amazing new idea. The difference is that this window-based GUI is running on an ATmega1284 microcontroller . But the behavior and speed of the interface is pretty much exactly what you’d expect if working on an e...

  • This piggy bank is our stock broker

    This piggy bank is our stock broker

    hackaday.com 20 Apr '13, 1pm

    [Johna and Justin] are working to take the emotion out of playing the market. They built this piggy bank which automatically purchases stock when your coinage totals the cost of a single share. That’s right, just turn the selector to one of your three chosen stocks (Google, Facebook, ...

  • Asynchronous fireflies use few parts

    Asynchronous fireflies use few parts

    hackaday.com 19 Apr '13, 9pm

    We like his design which uses a coin cell battery holder as the chassis for the project. The ATtiny13 driving the hardware is held in place by the two power wires. This lets him flash new firmware by rotating the chip and plugging in a little adapter he build. The LED connection might...

  • Replace your project power supplies with recycled Li-Ion cells and a switching regulator

    Replace your project power supplies with recycled Li-Ion cells and a switching regulator

    hackaday.com 19 Apr '13, 7pm

    The recycled cells he’s talking about are pulled out of larger battery packs. As we’ve seen in the past , dead battery packs for rechargeable tools, laptops, etc., are often plagued by a few bad apples. A small number of dead cells can bork the entire battery even though many perfectl...

  • Measuring the lifespan of LEGO

    Measuring the lifespan of LEGO

    hackaday.com 19 Apr '13, 1pm

    The hacked together apparatus is pretty ingenious. It uses two servo motors for testing, each driven by the Arduino which is logging the count on an SD card. One of the two white LEGO parts has been screwed onto an arm of the upper servo. That servo presses down onto the mating piece ...

  • Pulse Oximeter from LM324, LED, and Photodiode: This pulse oximeter is so simple and cheap to build it’s almo...

    Pulse Oximeter from LM324, LED, and Photodiode

    hackaday.com 18 Apr '13, 9pm

    a concept we’ve seen a few times before . The light from an LED shines through your finger and is measured on the other side by a phototransistor. It’s that light grey plastic thing you see on a patient’s finger when they’re in the hospital. [Scott] went with a common wooden clothes p...

  • Living night light with glowing algae

    Living night light with glowing algae

    hackaday.com 18 Apr '13, 8pm

    M father, an ex Navy man, has told me stories of glowing water since I was little. Being a person who was obsessed with all things that light up this always stuck with me. I saw a headline one day that someone was making an algae-light. Sadly when I clicked on it, the algae was just t...

  • Semi-automatic pick and place machine

    Semi-automatic pick and place machine

    hackaday.com 18 Apr '13, 7pm

    The machine is built in two parts. The portion in the upper left feeds components from reels and is fully automated. The portion on the lower right consists of a padded arm-rest which slides smoothly along two axes. A mechanical arm with multiple articulations is attached to the end, ...

  • Hidden servo automates slat-style window blinds

    Hidden servo automates slat-style window blinds

    hackaday.com 18 Apr '13, 1pm

    The image above is a screenshot from the demo which you can watch after the break. The top enclosure for the blinds is just shown at the top of the frame. Here [HA] is demonstrating a few different control designs which he has been trying out. You can see what looks like a Molex conne...

  • Upgrade a toy keyboard’s tone production

    Upgrade a toy keyboard’s tone production

    hackaday.com 17 Apr '13, 9pm

    His preliminary investigation of the stock components yielded a mystery uC encased in a blob of black epoxy. He wasn’t going to be getting anywhere with that, so he started by figuring out how to use 4051 multiplexers to read all of the keys. Outputs for that were routed to a 20 pin h...

  • 3D Printing sensor mounts for the Oculus Rift

    hackaday.com 17 Apr '13, 7pm

    While browsing an oculus rift thread on reddit, I saw someone mention how nice it would be to have some actual mounts for external sensors on their Rift. The idea is that adding additional sensors or cameras will allow us to expand the capabilities of the rift. With something like the...

  • Apple MagSafe cord repair

    Apple MagSafe cord repair

    hackaday.com 17 Apr '13, 7pm

    [Tommy Ward] had a big problem with the cord for his laptop power supply. This thing’s not cheap so he figured out a way to fix the frayed cord on his Apple MagSafe . He asserts that the shortened rubber collar on the plug end of the cord is to blame for this type of damage. We think ...

  • Hackerspace security system brings RFID, video feedback, and automatic doors

    hackaday.com 17 Apr '13, 1pm

    It’s not that it’s not gonna run as it should but it has quite a few flaws to have acceptable reliability. I understand it’s a system for fun-first,but i will just state my opinion so you get food for thought,i design alarm systems for quite a few years now so i hope you’ll find a few...

  • Hacked together Mac isn’t a hackintosh

    Hacked together Mac isn’t a hackintosh

    hackaday.com 16 Apr '13, 9pm

    As we’ve so often been caught doing, [Flippy] was browsing eBay for deals. It’s a dangerous activity because you end up falling into purchases like an Aluminum iMac for $35. That led to the purchase of a very slim LED LCD monitor to use as the display. It fits perfectly behind the iMa...

  • Building a kegerator with visual style

    Building a kegerator with visual style

    hackaday.com 16 Apr '13, 7pm

    Chest freezers are perfect for these builds as their top door design helps keep the cold air inside to boost the efficiency. The trick is to modify them without messing up the insulating properties of the appliance housing. [GMMN's] approach is a common one, build a cuff to go in betw...

  • Tube radio husk gets a web radio transplant

    Tube radio husk gets a web radio transplant

    hackaday.com 16 Apr '13, 1pm

    [Dominic Buchstaller] found this German Greatz tube radio at a flea market. It only cost him about €35 and was in a bit more rough condition than the finished product you see above. He also found that a portion of the original circuitry was missing, making it completely non-function. ...

  • Original hardware for fifteen consoles jammed into recently completed Project Unity

    Original hardware for fifteen consoles jammed into recently completed Project Unity

    hackaday.com 15 Apr '13, 9pm

    This is definitely an impressive piece of work! I admit that I shook my head a bit, though, when he said that he used original hardware because that would be how the games were meant to be played. He definitely has a point with emulation accuracy, For some games this makes an importan...

  • New post: [FlorianH] shows off MinimaBL, the next generation of his quadcopter project

    [FlorianH] shows off MinimaBL, the next generation of his quadcopter project

    hackaday.com 15 Apr '13, 7pm

    You’ll find some outdoor flight demo clips after the break. Right off the bat we’re impressed at the rock solid stability of the quadrotor while in flight. Even indoors the last version had a hint of a wobble as the control loop calculated stabilization. Here he borrowed some code fro...

  • Glowing Easter eggs more fun than a dye job

    Glowing Easter eggs more fun than a dye job

    hackaday.com 15 Apr '13, 1pm

    The project still has one foot in the old tradition as it starts by blowing out the eggs. The larger hole on the bottom, which was used to evacuate the yoke an albumen, ends up being just the right size to insert an LED. You could simply hook these up to a battery and resistor, but [R...

  • Hackaday Links: Sunday, April 14th, 2013

    hackaday.com 14 Apr '13, 9pm

    We figure we have to start off this week’s links post talking about PETMAN. Boston Dynamics shows off the humanoid robot donning a full chemical suit . It’s a lot scarier than when we first saw it as a couple of legs a few years ago [Thanks Joshua]. Seeing something like that might dr...

  • New post: Building a replacement for a broken dehumidifier controller

    Building a replacement for a broken dehumidifier controller

    hackaday.com 14 Apr '13, 7pm

    We’ve thought of doing a project like this ourselves as the dehumidifier we ordered online runs the fan 24/7 no matter what the humidity conditions. But it wasn’t that [Davide Gironi] was unhappy with the features on his unit. It’s that the dehumidifier controller stopped working so h...

  • Teaching a computer to play Mario… seemingly through voodoo

    Teaching a computer to play Mario… seemingly through voodoo

    hackaday.com 14 Apr '13, 1pm

    The link above includes his whitepaper, but we think you’ll want to watch the 16-minute video (after the break) before trying to tackle that. In the clip he explains the process in laymen’s terms which so far is the only part we really understand (hence the reference to voodoo in the ...

  • @ToRo yo hice esta me costo 20 pesos y funciona muy bien.

    HDTV antenna that can hang in a window

    hackaday.com 14 Apr '13, 3am

    I’m certainly no expert on antennas, but I’m pretty sure a “HDTV antenna” doesn’t exist, just a marketing term like “color TV antenna”. In markets where there are no HDTV broadcasts, and DTV share the airwaves with the reaming low power analog UHF stations it’s simply a TV antenna.No ...