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Jac Londe

NFC Antennas - 1 views

  • So NFC is just a method of communication between two devices at short distance. What makes the NFC antenna design simple or easy? If you know much about antennas, the first question you might ask is what is the operating frequency of NFC. It turns out that these devices operate around 13.56 MHz. The corresponding wavelength is 22 meters long - this means to get a nice half-wave dipole antenna (that radiates well) we would need a device about 11 meters in length.
  • he NFC antenna area may be limited to 3"x1" (or 7 cm * 2.5 cm). Hence, we are talking about fitting an antenna i
  • to a volume where the maximum linear dimension is about 0.5% or less of a wavelength. And from antenna theo
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  • y, we know that you won't get any radiation out of such a small device.
  •  
    Longueur d'onde précise.
Jac Londe

PayPal.Me - 0 views

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    Go to paypal.me/zlic and type in the amount. Since it's PayPal, it's easy and secure. Don't have a PayPal account? No worries. Getting one is fast and free.
Jac Londe

Asus Padfone Unlocked Available (Full Specifications) - 0 views

  • ASUS lifted the veil over its long-awaited redesigned 9.2mm thin PadFone at the MWC. Sporting a 4.3-inch Super AMOLED qHD display, Snapdragon S4 with the new Adreno 225 GPU, and 8MP camera with LED flash and f/2.2 aperture, as well as 16-64GB of internal storage plus microSD slot, it has what we would expect from a modern high-end. Connectivity is taken care of 42Mbps HSPA+ radio, Wi-Fi, Bluetooth 4.0, HDMI and A-GPS, while a 1,520mAh battery unit is included as a juicer. The Padfone can get inserted into an optional tablet frame, whose 10.1 inch screen then gets powered by the phone itself, and can extend your battery life significantly. There is another dock, which allows you to add a detachable keyboard accessory, like on the Transformer Pad series. This one also comes with a stylus that except for doodling can be used to receive your phone calls as well, considering that the phone is inserted in the mothership.
Jac Londe

Explore Google Search - 0 views

  • Explore Google Search
  • Search is at the heart of everything we do at Google. Our engineers work every day to solve the hardest search problems, and thus improve your online experience. Here's a glimpse at what they do, the features they've built and the remarkable user stories that inspire our work.
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    Explore Google Search: Movies, weather, public data, earthquake information and more. Check out these 15 second search tips from Google to help you save time and get the most of your online experience.
Jac Londe

Tim O'Reilly in a Nutshell - O'Reilly Media - 0 views

  • Buy 2 Get 1 Free Free Shipping 100% Satisfaction Guarantee Buying Options Tim O'Reilly in a Nutshell Save a Tree - Go Digital What is this? Ebook Free Formats: ePub, Mobi, PDF Tim O'Reilly in a Nutshell
Jac Londe

D-Link unveils Cloud Router 1200 and 2000, dishes out WiFi in tube form -- Engadget - 0 views

  • D-Link unveils Cloud Router 1200 and 2000, dishes out WiFi in tube form
  • oth will let you remotely administrate the 802.11n router's devices from an Android or iOS app, and they both carry four gigabit Ethernet jacks as well as a USB port for some network media storage. The differences lay exclusively in the wireless support, where the single-band 1200 caters to the frugal set at 300Mbps and the simultaneous dual-band 2000 hums along at 600Mbps. Thankfully, the prices of the just-shipping access points are both about right for what you get: the Cloud Router 1200 is a cheap and cheerful $60, and the 2000 won't strain the wallet much more at $100.
Jac Londe

Internet Census 2012 - 0 views

  • Internet Census 2012
  • Carna Botnet
  • Abstract While playing around with the Nmap Scripting Engine (NSE) we discovered an amazing number of open embedded devices on the Internet. Many of them are based on Linux and allow login to standard BusyBox with empty or default credentials. We used these devices to build a distributed port scanner to scan all IPv4 addresses. These scans include service probes for the most common ports, ICMP ping, reverse DNS and SYN scans. We analyzed some of the data to get an estimation of the IP address usage. All data gathered during our research is released into the public domain for further study.
Jac Londe

3D Printing with Sculptris : Ponoko Community Hub - 0 views

  • 3D Printing with Sculptris
  • Sculptris is a supercool free sculpting tool. You can download it here from Pixologic. Much like ZBrush, Sculptris is a solid-body sculpting tool. Since it has an export function, we can use it for 3D printing too! Unfortunately at this stage we don't yet support OBJ files, so there's a couple of easy hoops you need to jump through to get your design ready. First export your sculpt as an OBJ file:
Jac Londe

The Day After Roswell - 0 views

  • by Philip J. Corso
  • Contents Forward Introduction Chapter 01 - The Roswell Desert Chapter 02 - Convoy to Fort Riley Chapter 03 - The Roswell Artifacts Chapter 04 - Inside the Pentagon at the Foreign Technology Desk Chapter 05 - The Cover-up Chapter 06 - The Strategy Chapter 07 - The EBE Chapter 08 - The Project Gets Under Way Chapter 09 - The Project Had Officially Begun Chapter 10 - The U2 Program and Project Corona - Spies in Space Chapter 11 - Project Moon Base Chapter 12 - The Integrated Circuit Chip - From the Roswell Crash Site to Silicon Valley Chapter 13 - The Laser Chapter 14 - The Antimissile Missile Project Chapter 15 - My Last Year in R&D - The Hoover Files, Fiber Optics, Supertenacity, and Other Artifacts Chapter 16 - 'Tesla’s Death Ray' and the Accelerated Particle Beam Weapon Chapter 17 - Star Wars Afterword
Jac Londe

Hail yes, it's big: US lab gets record hailstone - Yahoo! Canada News - 0 views

    • Jac Londe
       
      Colorado wasn't that the place where Tesla made is lectrical  experiences in Colorado Springs.
  • A 1-pound, 15-ounce (.875-gram) hailstone
  • BOULDER, Colo.
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  • South Dakota
  • Federal climate officials have confirmed it was the heaviest ever recorded on the continent.
Jac Londe

Get the Real url - 0 views

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    Real-url.org is a tool that lets you know what lies behind a shortened url. This tool also monitors a large portion of shared links on Twitter and find buzzing videos or photos. If you have a blog, Real Url alerts you if one of your articles has been shared on Twitter. We also offer an API.
Jac Londe

Scripting News: WikiLeaks on the run - 0 views

  • ikiLeaks says you can find them through wikileaks.ch, which redirects to a dotted ID. People exchange this information on Twitter. So in a weird sneaker-net sort of way we have implemented a human DNS.
  • All the while there's a huge glaring 800-pound-gorilla elephant-in-the-room size contradiction. The pols say that businesses can't support WikiLeaks, but the Guardian and the NY Times and the newspapers in Pakistan, Indonesia, Israel -- all over the world -- they're businesses too. So if they're really serious about this, we're in First Amendment territory. They ought to be careful, because the politicians depend on these businesses to sell their product. Without them, they have no way to lie to us.   See the problem isn't that WikiLeaks is lying, the problem is that they're telling the truth. This is not business as usual. 
  • It seems to me that at the end of this chain is BitTorrent. That when WikiLeaks wants to publish the next archive, they can get their best practice from eztv.it, and have 20 people scattered around the globe at the ends of various big pipes ready to seed it. Once the distribution is underway the only way to shut it down will be to shut down the Internet itself.
Jac Londe

Tutorial: Arduino and GSM Cellular - Part One « t r o n i x s t u f f - 0 views

  • Arduino and GSM Cellular – Part One
  • This is chapter twenty-six of a series originally titled “Getting Started/Moving Forward with Arduino!” by John Boxall – A tutorial on the Arduino universe.
Jac Londe

Daedalus Projects - 0 views

  • CrazyFlie flight video
  • The copter itself is organised around the main CPU. The job of this CPU is to acquire the physical measurement given by the gyroscopes and accelerometers and to control the motors to keep the copter stable. This is done by a regulation loop which controls the motors speed 250 times per second. The radio communication has a pretty low bandwidth and is used to send commands to the copter and receive telemetry data from it. The CPU program can be updated by radio.
  • The computer runs control and telemetry programs. The control program reads the input from a game-pad and sends control commands to the copter. We also have programs that can configure the copter regulation parameters and log the measurements in order to make easier to tune the regulation. All the development is done on Windows and Linux. Indeed we are 3 to work on this project, two of us work on Linux and one is mainly on Windows. Using FLOSS permit to handle that in a very effective way. We are mainly using the GCC compiler from CodeSourcery for the copter program compilation, GNU Make for the project build, Mercurial for the source control, and python/pyusb for the communication with the copter. All these softwares works seamlessly on both Linux and Windows and made the project pretty easy to handle. The distance between the motors (horizontally and vertically) is around 8 cm and the total weight is around 20 g.
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  • The top of the board contains the sensors and the control/communication electronic: The JTAG/Serial connector permit to program the processor and to communicate debug messages. The Main CPU is a STM32 Cortex-M3. It is clocked at 64MHz from the internal oscillator. The 2 Axis X-Y Gyro is an invensense IDG500. It has an analog output and thus is connected to the CPU analog to digital converters. The 1 Axis Z gyro is an invensense ISZ500. As the X-Y gyro this is an analog chip connected to the CPU analog to digital converters. The 2.4GHz Radio is based on a nRF24L01+ chip from Nordic Semiconductor. It is actually a breakout board sold by SparkFun. The radio is connected to the CPU via a SPI port. The 3 Axis Accelerometer is a SMB380 from Bosch. It is connected to the CPU via an I²C bus.
  • Here nothing particular, except that the little battery is taped on the bottom of the copter. The battery comes from a Silverlit x-twin plane and actually permit 4.5min of flight time.
  • Under the battery we mostly have power supply and the “power” electronics: The charge connector accepts 5V and permits to charge the battery The power switch permits to power the copter either from the charge connector or from the battery. The 5V step-up permits to increase the power voltage from the 3~4V coming from the battery to 5V. The two 3.3V linear regulators, reduces the 5V to power the copter electronic. The digital and analog 3.3V are generated independently. This was made to reduce the noise on the analog components (here it is the two gyros, a quite critical part). Finally at the four sides we have the motors transistors. The power for the motors pass on the top and bottom of the part of PCB that hold the motors. It can be noted that we also have the battery charging chip just at the right of the 3.3V regulators. It is a classical MAX1555 and is working pretty well. The idea with the step-up was to get a more stable voltage when the battery is depleted and also to remove some of the noise coming from the motor electonic. Anyway, this boars is capable to work without by using 2.8V linear regulators instead. So most likely the step-up will be excluded on the next version and we also plan to integrate the radio on board. The motors and propellers are taken from a Silverlit X-twin plane. They are powered by the battery voltage.
  • The copter is controlled via a python program running on the PC. A Playstation bluetooth gamepad is used to pilote it.
Jac Londe

Creative Aurvana X-Fi Noise Cancelling Headphones | Creative Labs Online Store - 0 views

  • Creative Aurvana X-Fi Noise Cancelling Headphones
  • Introducing the Creative Aurvana X-Fi Headphones, the world's first noise-canceling headphones equipped with X-Fi technology. The noise-cancellation feature lets you enjoy your music without unnecessary distraction and together with the X-Fi technology, gets you set for more thrilling tunes. Change the way you listen to your music, movies and games with the Aurvana X-Fi headphones today.
Jac Londe

gkaindl.com → software → arduino ethernet - 0 views

  • Arduino Ethernet is a collection of libraries I have written to use within the Arduino programming environment in conjunction with the Ethernet shield. While the individual libraries are downloaded within a single archive, they do not depend on each other (unless noted otherwise) and can be used independently. The libraries are published under the GPLv2 (or, at your discretion, any later version). Individual libraries EthernetBonjour | Documentation EthernetDHCP | Documentation EthernetDNS | Documentation Also, by popular demand, I've prepared a very simple demo sketch using DNS, DHCP and Bonjour together. Basically, it gets network configuration data via DHCP, then lets you resolve DNS names via the DNS server received from DHCP, all while announcing its DHCP-assigned IP address via link-local Bonjour — Basically a combination of examples from the individual libraries, which I also recommend to look at, as they contain lots of comments explaining how stuff works.
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