Lundi, Avril 21, 2014 - 11:00Dynamic LED table project – As Seen on Show & Tell!
Rikard shared his LED table project, modifying an Ikea LACK table into a LED platform on which he can run a number of types of visualizations:
Expensive electronics and a cheap table.
Are you bored of LED lights? No? Me neither. Thats why i thought another 256 RGB LED’s in my living room might be a good idea.
Lundi, Avril 21, 2014 - 10:00Ariel Waldman: Let’s Imagine Greater campaign #womeninSTEM
The SyFy channel featured me in a TV spot for their Let’s Imagine Greater campaign. The campaign aims to inspire people to imagine amazing things – and hopefully go on to create them! I worked with the team at SyFy to help them engage communities online to “imagine greater” in exploring space.
I really loved filming on a set – I hope it’ll be the first of many. The TV spot was shot on green screen and an additional interview was shot as part of an electronic press kit (EPK):
Lundi, Avril 21, 2014 - 10:00VoLumen — The Most Advanced Persistence of Vision Display Yet
Whoa. We’re just blown away by this new project by [Maximilian Mali] and [Sebastian Haushofer]. It’s a stacked Persistance of Vision display, with 9 layers — effectively creating a Volumetric 3D POV Display.
We recently shared one of [Maximilian's] other projects, The Ripper CNC Machine. As it turns out, the reason he built The Ripper was to aid in the manufacture of his VoLumen project. He’s been designing these Volumetric 3D displays for about 3 years now, with the first iteration called the viSio, capable of 40 fps 3D video without the need for any 3D glasses.
The new and improved VoLumen features 34 micro-controllers, each with 512MB flash memory for storing animation data. In total there are 1024 high power RGB LEDs, which draw a whopping 200W at full load, making it bright, crisp and visible even in direct sunlight. It’s an incredible project that [Maximilian] started when he was only 16 years old.
You have to see the video of this thing in action.
Today, [Maximillian] and [Sebastian] are finishing up a mechatronic engineering degree in Vienna, and are hoping to receive a grant to continue their studies abroad. So if there are any university coordinators in our midst — let’s get these guys some support!
Filed under: led hacks
Lundi, Avril 21, 2014 - 09:00The thinnest membrane technologically possible has been produced and it’s 100,000 times thinner than the diameter of a human hair.
Science Daily has the scoop on the latest version of super thin graphene.
A new nano-membrane made out of the ‘super material’ graphene is extremely light and breathable. Not only can this open the door to a new generation of functional waterproof clothing, but also to ultra-rapid filtration. The new membrane just produced is as thin as is technologically possible.
Researchers have produced a stable porous membrane that is thinner than a nanometre. This is a 100,000 times thinner than the diameter of a human hair. The membrane consists of two layers of the much exalted “super material” graphene, a two-dimensional film made of carbon atoms, on which the team of researchers, led by Professor Hyung Gyu Park at the Department of Mechanical and Process Engineering at ETH Zurich, etched tiny pores of a precisely defined size.
The membrane can thus permeate tiny molecules. Larger molecules or particles, on the other hand, can pass only slowly or not at all. “With a thickness of just two carbon atoms, this is the thinnest porous membrane that is technologically possible to make,” says PhD student Jakob Buchheim, one of the two lead authors of the study, which was conducted by ETH-Zurich researchers in collaboration with scientists from Empa and a research laboratory of LG Electronics. The study has just been published in journal Science.
The ultra-thin graphene membrane may one day be used for a range of different purposes, including waterproof clothing. “Our membrane is not only very light and flexible, but it is also a thousand fold more breathable than Goretex,” says Kemal Celebi, a postdoc in Park’s laboratory and also one of the lead authors of the study. The membrane could also potentially be used to separate gaseous mixtures into their constituent parts or to filter impurities from fluids. The researchers were able to demonstrate for the first time that graphene membranes could be suitable for water filtration. The researchers also see a potential use for the membrane in devices used for the accurate measurement of gas and fluid flow rates that are crucial to unveiling the physics around mass transfer at nanoscales and separation of chemical mixtures.
Lundi, Avril 21, 2014 - 08:00A New Book on the 2,000-Year History of GPS Tracking
Bret Brownell at Mother Jones highlights some of the key moments from You Are Here: From the Compass to GPS, the History and Future of How We Find Ourselves, a new book on the history of GPS tracking by Hiawatha Bray.
Boston Globe technology writer Hiawatha Bray recalls the moment that inspired him to write his new book, You Are Here: From the Compass to GPS, the History and Future of How We Find Ourselves. “I got a phone around 2003 or so,” he says. “And when you turned the phone on—it was a Verizon dumb phone, it wasn’t anything fancy—it said ‘GPS’. And I said, ‘GPS? There’s GPS in my phone?’” He asked around and discovered that yes, there was GPS in his phone, due to a 1994 FCC ruling. At the time, cellphone usage was increasing rapidly, but 911 and other emergency responders could only accurately track the location of land line callers. So the FCC decided that cellphone providers like Verizon must be able to give emergency responders a more accurate location of cellphone users calling 911. After discovering this, “It hit me,” Bray says. “We were about to enter a world in which…everybody had a cellphone, and that would also mean that we would know where everybody was. Somebody ought to write about that!”
So he began researching transformative events that lead to our new ability to navigate (almost) anywhere. In addition, he discovered the military-led GPS and government-led mapping technologies that helped create new digital industries. The result of his curiosity is You Are Here, an entertaining, detailed history of how we evolved from primitive navigation tools to our current state of instant digital mapping—and, of course, governments’ subsequent ability to track us. The book was finished prior to the recent disappearance of Malaysia Airlines flight 370, but Bray says gaps in navigation and communication like that are now “few and far between.”
1st century: The Chinese begin writing about mysterious ladles made of lodestone. The ladle handles always point south when used during future-telling rituals. In the following centuries, lodestone’s magnetic abilities lead to the development of the first compasses.
2nd Century: Ptolemy’s Geography is published and sets the standard for maps that use latitude and longitude.
Lundi, Avril 21, 2014 - 07:00From the Forums: 16×16 neopixel + arduino nano + eclipse plugin success #NeoPixel #arduino
big_red_frog shared a Neopixel matrix video on the Adafruit Forums:
This is a video of a 16 x 16 array of neopixels on a flexible substrate. Driven by an arduino nano and programmed via arduino plugin for eclipse which takes the programming environment to the next level.
Simple bloom effect to shake out the system. Also implemented a custom 3×5 font.
…Next phase is to convert to a flora and a beefy lipo supply…
Lundi, Avril 21, 2014 - 07:00Sublime Text as an Arduino IDE
If you’ve played with an Arduino, you’ve probably been frustrated by the IDE. It works, but it’s not the best editor. It’s especially painful for bigger files and larger projects. The Stino plugin for Sublime Text aims to solve this issue by bringing the full functionality of the Arduino IDE to the Sublime Text editor.
Sublime Text is a powerful text editor with support for most programming languages. What it’s missing is support for compiling and uploading code to an Arduino. Stino bridges that gap. Sublime is a commercial product, and retails for $70 USD. However Sublime does have an indefinite trial period, so Stino can be evaluated for free. Stino itself is an open source plugin written in Python, and you can contribute to the project on Github.
After installing Sublime and Stino, you point the plugin at an Arduino install folder. It then allows you to build and flash directly from the editor. For anyone who’s been frustrated with the Arduino IDE, this looks like a slick solution.
[Thanks to Matt for the tip!]
Filed under: Arduino Hacks
Lundi, Avril 21, 2014 - 06:11Cow-Sized Plywood Spider Walker Shrieks Like Swarming Demon Horde
Lundi, Avril 21, 2014 - 06:00First potentially habitable Earth-sized planet confirmed: It may have liquid water
The first Earth-sized exoplanet orbiting within the habitable zone of another star has been confirmed by observations with both the W. M. Keck Observatory and the Gemini Observatory. The initial discovery, made by NASA’s Kepler Space Telescope, is one of a handful of smaller planets found by Kepler and verified using large ground-based telescopes. It also confirms that Earth-sized planets do exist in the habitable zone of other stars.
“What makes this finding particularly compelling is that this Earth-sized planet, one of five orbiting this star, which is cooler than the Sun, resides in a temperate region where water could exist in liquid form,” says Elisa Quintana of the SETI Institute and NASA Ames Research Center who led the paper published in the current issue of the journal Science. The region in which this planet orbits its star is called the habitable zone, as it is thought that life would most likely form on planets with liquid water.
Steve Howell, Kepler’s Project Scientist and a co-author on the paper, adds that neither Kepler (nor any telescope) is currently able to directly spot an exoplanet of this size and proximity to its host star. “However, what we can do is eliminate essentially all other possibilities so that the validity of these planets is really the only viable option.”
With such a small host star, the team employed a technique that eliminated the possibility that either a background star or a stellar companion could be mimicking what Kepler detected. To do this, the team obtained extremely high spatial resolution observations from the eight-meter Gemini North telescope on Mauna Kea in Hawai`i using a technique called speckle imaging, as well as adaptive optics (AO) observations from the ten-meter Keck II telescope, Gemini’s neighbor on Mauna Kea. Together, these data allowed the team to rule out sources close enough to the star’s line-of-sight to confound the Kepler evidence, and conclude that Kepler’s detected signal has to be from a small planet transiting its host star.
Lundi, Avril 21, 2014 - 06:00MDK — Project Ara
The Module Developers Kit (MDK) defines the Ara platform for module developers and provides reference implementations for various design features. The Ara platform consists of an on-device packet-switched data network based on the MIPI UniPro protocol stack, a flexible power bus, and an elegant industrial design that mechanically unites the modules with an endoskeleton. Throughout 2014, the Project Ara team will be working on a series of alpha and beta MDK releases. We welcome developer input to the MDK: either through the Ara Module Developers mailing list/forum or at one of the series of Developers Conferences. Additionally, if you’d like to create a reference module design, please get in touch!
Lundi, Avril 21, 2014 - 04:00The Raspberry Eye Sees All
[Roman Rolinsky] wanted to try to do something interesting with his Raspberry Pi and a 2.8″ LCD he had laying about… So he made a rather bulky version of Google Glass.
We’ve seen a few examples of home brew Google Glass before, or even real-life subtitle glasses used for translation on the fly, but what we really like about [Roman's] project (besides the fact he hosted it on our very own awesome project hosting site) is that he’s put together the projection system himself out of basic components.
To create the HUD, he’s using a semi-transparent mirror which he took out of an Eye of Horus Beamsplitter game – which is a really cool real-life puzzle board game like those games where you have to reflect the laser to solve a puzzle. He’s then using a 3x Fresnel magnification lens which is placed over top of his 2.8″ LCD in a 3D printed enclosure. This magnifies and reflects the image onto the mirror which is placed directly over his eye, allowing for a see through display.
We’ve asked for a demonstration video, so if you follow his project you’ll get all the future updates of his Raspberry Eye.
Filed under: Raspberry Pi
Lundi, Avril 21, 2014 - 01:01Hackaday Links: April 20, 2014
[Josh] hit the same issue we’ve faced before: cable modems don’t match a form factor and usually don’t make themselves easy to mount on something. We could complain about routers as well, but at least most of those have keyhole slots so you can hang them on some screws. Inspiration struck and he fabricated his own rack-mount adapter for it. Velcro holds it in place, with a cutout bezel to see the status lights and an added fan to keep things cool.
Here’s a pair of strange but possibly interesting ones that were sent in separately. The first is an analysis of how much energy short-run CNC prototyping consumes versus traditional manufacturing. The other is an article that [Liz] wrote about getting started with CNC mill bits. She says she compiled all that she learned as she was getting started in the field and wants to save others the effort.
This one goes back several years, but who doesn’t love to hear about a voice-controlled wheelchair?
So you can solder QFN parts but you can’t hammer a nail straight into a piece of wood? The answer, friend, is a laser guided hammer. Someone hire this [Andybot] person, because the solution to the problem shows the ability to out-think an interesting dilemma: how do you put a laser in a hammer head and still use it to hit things?
We’ve seen a lot of these long-range WiFi hacks over the years. This one is worth looking at because of the work done to create an outdoor mount that will stand the test of time.
And finally, we’re still really fond of this 2-bit paper processor that helps you wrap your brain around what’s going on with those silicon wafers that rule our everyday lives. [glomCo] liked it as well, and actually coded an emulator so that you can play with it without printing anything out on paper. We think it takes away some of the fun, but what an excellent programming exercise!
Dimanche, Avril 20, 2014 - 23:26Thermomètre Nixie Steampunk
Fan de ce style depuis pas mal de temps déjà, c’est ma première réalisation concrète. L’idée était de réaliser un (joli) thermomètre d’ambiance, histoire de savoir quelle température il fait dans la pièce. J’avais déjà réalisé un thermomètre à tubes Nixies, mais ce dernier avait deux défauts : les tubes n’étaient pas centrés sur le pcb, et il consommait un peu trop pour avoir envie de le laisser allumé en permanence (et en plus, il n’était pas « habillé »…).
Du coups, la première étape de cette réalisation a été de refaire un pcb complet. Pas simplement déplacer les tubes, j’en ai profité pour alléger le tout, histoire de supprimer les composants qui n’étaient pas nécessaires. En effet, sur la version précédente, j’utilisais un NE555 pour générer les impulsions nécessaires à la haute tension. Désormais cette tâche est réalisée par le microcontrolleur lui-même.
Quitte a devoir reprogrammer le microcontrolleur pour rajouter la génération de la haute tension, j’en ai profité pour tout ré-écrire en avrc. Ca me permet d’avoir un timing très précis, autant sur la génération du signal HT que sur le multiplexage des tubes. (La fréquence est importante pour la génération de la haute tension car elle joue pour beaucoup dans le rendement). Mon code aurais pu être grandement optimisé si j’avais un peu mieux réfléchi à mes branchements, mais sur ma version, je m’étais trompé sur certaines liaisons (ce qui expliquera les fils visibles sur les photos). Le schéma proposé corrige ces erreurs.
Thermomètre à tube Nixie Steampunk
Pour l’habillage, je me suis fait un peu plaisir. Les deux « chapeaux » sont en laiton, que j’ai tourné, moitié façon meca, c’est à dire en utilisant le tour de manière traditionnelle, moitié à main levée à l’aide d’une lime (pour les arrondis notamment). Le reste de l’accastillage est composé de différents tubes de laitons, diamètre 5 et 3mm, que l’on trouve facilement en magasin de modélisme.
Le tube est quand a lui un tube de plexyglass acheté pour l’occasion.
Socle vu de dessous
Le socle a été tourné dans un beau morceau de chêne, par un ami car je ne disposais pas de tour à bois, et le tour à metal n’est vraiment pas adapté à ce genre d’opérations. Le plot du milieu est assez profond pour que le tube laiton soit bien maintenu, mais ne va pas jusqu’en bas pour pouvoir laisser passer les fils. J’ai repris ensuite le socle tourné pour le fraiser afin de fixer le connecteur d’alimentation, et fait les 4 perçages nécessaires (2 pour les tubes verticaux, un pour le capteur de température, et un pour le connecteur d’alim).
Détail du capteur de température
Le capteur de température utilisé est un LM35. Pas particulièrement esthétique donc. Pour le masquer, je l’ai donc glissé à l’intérieur d’une douille de 22lr qu’un ami tireur m’a gentiment fourni. Le capteur est fixé à l’intérieur à la colle à chaud.
Dimanche, Avril 20, 2014 - 22:00Sci-Fi Contest Roundup: Stargate
The 90s were a remarkable time for Sci-Fi movies, in that there actually were sci-fi movies, and not sequels to a reboot of yet another comic book movie. One of the breakout hits from this era was Stargate, the film and three syndicated television series. With a corpus this large, a few Stargate builds made it into our Sci Fi contest, and from the looks of things, they’re pretty cool.
The Ma’Tok Staff
The Ma’Tok staff is an energy weapon used by Jaffa warriors that fires a concentrated plasma bust over 70 yards. While we question the utility of a weapon that’s only accurate to 70 yards on the battlefield (like, arrows are better, man) [frankstripod] is making his own version. Instead of plasma bolts, it’ll be a hairspray-powered PVC potato cannon.
It’s totally not a tricorder™
The Ancients in Stargate Atlantis had a multifunction handheld device capable of detecting life signs, observing multiple frequencies of the electromagnetic spectrum, and finding power sources. Basically, it’s a smartphone that’s not from Star Trek. This scanner became an important piece of commandeered technology, and these guys are building their own. Qi wireless charging, touch screen, IR transceiver, and everything a real tricorder should be.
Wait. Where did he get Naquadah?
What good would a post on Stargate builds be without an actual Stargate? [shlonkin] and [dkopta] are doing just that, complete with a rotating right and light-up chevrons. Here’s a video. Video below, of course.
The Sci-Fi contest runs until the end of the month, so there’s still time for you to get in on the action and get your hands on some really great prizes. We’re giving away O’scopes, soldering stations, dev boards, some sweet Sci-Fi prizes, and awesome Hackaday T-shirts.
Filed under: contests
Dimanche, Avril 20, 2014 - 21:33EGGS
Dimanche, Avril 20, 2014 - 21:12The Egg Painter
The Easter tradition of dying eggs is practiced by people all over the world, but in Ciocanesti, a small village in Romania’s northern region of Bukovina, this tradition has evolved into an art form.
Dimanche, Avril 20, 2014 - 20:23Underwater ROV at the Edinburgh mini Maker Faire
Dimanche, Avril 20, 2014 - 19:33Making stuff with SplatForm at the Edinburgh mini Maker Faire
Dimanche, Avril 20, 2014 - 19:00Blinky LED Necklace That Actually Looks Chic
[Agy] a fabric hacker in Singapore has made a chic light sensitive LED necklace, and written up the tutorial on her blog Green Issues by Agy. The lovely thing about this hack is that it doesn’t look like a breadboard round her neck, and most of the non-electronic components have been upcycled. [Agy] even used Swarovski crystals as LED diffusers for extra bling.
Using a LilyPad Arduino with a light sensor and a few LEDs, [Agy's] circuit is not complicated. She seems to be just branching out in to wearable tech, so it is nice that she learnt to program different modes for bright and low light (see video below). Her background in sewing, refashioning and upcycling does show through in her crafty use of an old pair of jeans and lace scraps for this project.
We love tech focused jewelry like [TigerUp's] LED matrix pendants or [Armilar's] Nixie-ify Me Necklace, but they do scream Geek. DIY electronically enhanced accessories are becoming more commonplace with the variety of micro-controller platforms expanding rapidly. Low energy wearable boards like MetaWear are making it easy for the tech to be discreet and easily connected to your smartphone. 3D printing is enabling us to create durable enclosures, settings and diffusers like the ones used for LED Stegosaurus Spikes. With all these things, hobby wearable projects can not only be functional and durable, but can also look great too.
Do you think this necklace would look out of place in a non-geeky gathering? Have you got any helpful tips for [Agy's] code? Have you tried using gems or crystals as diffusers and what were the results? Let us know in the comments below.
Filed under: wearable hacks
Dimanche, Avril 20, 2014 - 18:24The Edinburgh Tool Library at the Edinburgh mini Maker Faire
You can't own every tool, and even if you're lucky enough to be a member of a hackspace or makerspace, you can't take them home if they do. Which is where the Edinburgh Tool Library comes in, it's a new charity that not only wants to lend you tools, but teach you how to use them.