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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

Liquidware : Android Boot SD Card - 0 views

  • Android Boot SD Card Options: Android Boot SD Card ($119.31) Quantity: View Cart Final Cost: $119.31 Several Android developers have requested a pre-packaged and pre-formatted SD card contains the bootable Android OS, customized to run on the BeagleBoard and BeagleTouch. The Android Boot SD card s
  • aves days of customization and low-level programming needed to integrate Android with the BeagleBoard platform, allowing developers to immediately run the
  • Android OS and focus on building applications instead.
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  • Low-level drivers and kernels have been coded and optimized to turn the BeagleBoard and BeagleTouch into a high-performance handheld Android device. Ideal for prototyping, the Android OS Boot SD card can easily be swapped out with the standard Liquidware BeagleBoot SD card to run Linux as needed. The card comes standard with the Android DIY Starter Kit+ and the Android Hardware Development Kit
  • Specifications Kingston 4GB SD Card Class 4: 4MB/s minimum data transfer rate Secure Digital High Capacity (SDHC) compatible Pre-formatted to run with BeagleBoard Boots Android directly
Jac Londe

My N3RD: Connect and Control Anything from Anywhere by Wild Hare, LLC. - Kickstarter - 0 views

  • What is My N3RD? My N3RD (Pronounced Nerd) turns your smartphone into a remote control for every gadget, vehicle and appliance you own. It works with the My N3RD app to upgrade ANY switch into a wireless controlled, programmable, and automatic smart switch, updating all of your devices into intelligent connected ones. Connect and control devices directly. No internet connection or router required.   Works with DC and mobile applications such as Cars, RVs, and boats. With My N3RD, you aren’t just limited to home appliances. Connects to any switch, enabling you to upgrade virtually anything— not just simple appliances like fans and lights. Simple setup. You only need to configure functions in the App once, and you can reuse them again and again. My N3RD is equipped with two relays and two inputs that can be used with external switches and physical switches to create a wide variety of uses. My N3RD is smart. You can program My N3RD to act without your intervention. Use the app to set timers for appliances and electronics. Although My N3RD has direct connect capability, it can also be connected through your home WiFi so you can control your devices from anywhere. Upgrade anything to an Internet of Things device.
Jac Londe

Arduino - Introduction - 0 views

  • What is Arduino?
  • Arduino is a tool for making computers that can sense and control more of the physical world than your desktop computer. It's an open-source physical computing platform based on a simple microcontroller board, and a development environment for writing software for the board.
  • Inexpensive - Arduino boards are relatively inexpensive compared to other microcontroller platforms. The least expensive version of the Arduino module can be assembled by hand, and even the pre-assembled Arduino modules cost less than $50
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  • Cross-platform - The Arduino software runs on Windows, Macintosh OSX, and Linux operating systems. Most microcontroller systems are limited to Windows.
  • Simple, clear programming environment - The Arduino programming environment is easy-to-use for beginners, yet flexible enough for advanced users to take advantage of as well. For teachers, it's conveniently based on the Processing programming environment, so students learning to program in that environment will be familiar with the look and feel of Arduino
  • Open source and extensible software- The Arduino software and is published as open source tools, available for extension by experienced programmers. The language can be expanded through C++ libraries, and people wanting to understand the technical details can make the leap from Arduino to the AVR C programming language on which it's based. SImilarly, you can add AVR-C code directly into your Arduino programs if you want to.
  • Open source and extensible hardware - The Arduino is based on Atmel's ATMEGA8 and ATMEGA168 microcontrollers. The plans for the modules are published under a Creative Commons license, so experienced circuit designers can make their own version of the module, extending it and improving it. Even relatively inexperienced users can build the breadboard version of the module in order to understand how it works and save money.
Jac Londe

Light-emitting diode - Wikipedia, the free encyclopedia - 0 views

  • Light-emitting diode
  • A light-emitting diode (LED) is a semiconductor light source.[3] LEDs are used as indicator lamps in many devices and are increasingly used for other lighting. Introduced as a practical electronic component in 1962,[4] early LEDs emitted low-intensity red light, but modern versions are available across the visible, ultraviolet, and infrared wavelengths, with very high brightness. When a light-emitting diode is forward-biased (switched on), electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence and the color of the light (corresponding to the energy of the photon) is determined by the energy gap of the semiconductor. LEDs are often small in area (less than 1 mm2), and integrated optical components may be used to shape its radiation pattern.[5] LEDs present many advantages over incandescent light sources including lower energy consumption, longer lifetime, improved robustness, smaller size, and faster switching. LEDs powerful enough for room lighting are relatively expensive and require more precise current and heat management than compact fluorescent lamp sources of comparable output. Light-emitting diodes are used in applications as diverse as aviation lighting, automotive lighting, advertising, general lighting, and traffic signals. LEDs have allowed new text, video displays, live video, and sensors to be developed, while their high switching rates are also useful in advanced communications technology. Infrared LEDs are also used in the remote control units of many commercial products including televisions, DVD players, and other domestic appliances.
Jac Londe

Near field communication - Wikipedia, the free encyclopedia - 0 views

  • Near field communication (NFC) is a set of standards for smartphones and similar devices to establish radio communication with each other by touching them together or bringing them into close proximity, usually no more than a few centimetres. Present and anticipated applications include contactless transactions, data exchange, and simplified setup of more complex communications such as Wi-Fi.[1] Communication is also possible between an NFC device and an unpowered NFC chip, called a "tag".[2]
  • NFC standards cover communications protocols and data exchange formats, and are based on existing radio-frequency identification (RFID) standards including ISO/IEC 14443 and FeliCa.[3] The standards include ISO/IEC 18092[4] and those defined by the NFC Forum, which was founded in 2004 by Nokia, Philips and Sony, and now has more than 160 members. The Forum also promotes NFC and certifies device compliance.[5
Jac Londe

Lilliputian Systems - 0 views

  • LILLIPUTIAN SYSTEMS ANNOUNCES WAFER MANUFACTURING SUPPLY AGREEMENT WITH INTEL AND EQUITY STAKE BY INTEL CAPITAL
  • Lilliputian Systems, Inc. (www.lilliputiansystems.com), developer of the world’s first Personal Power™ solution for consumer electronics devices, today announced that it has signed a Wafer Manufacturing Supply Agreement with Intel.  Additionally, Lilliputian Systems announced that Intel Capital, Intel Corporation’s global investment arm, has taken an equity stake in Lilliputian Systems.
  • In connection with the agreement, Intel will manufacture and supply production wafers, which are critical in the production of all of Lilliputian Systems’ product lines, most importantly its first product – the revolutionary USB Mobile Power System.
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  • Wafer manufacturing will be conducted at Intel’s 200mm facility in Hudson, MA, and activities to support this manufacturing will commence immediately. 
  • “Today’s announcement ensures that we can offer our revolutionary Silicon Power Cell™ and Personal Power™ solutions to customers worldwide with industry-leading quality and reliability,” said Mouli Ramani, vice president of Business Development at Lilliputian Systems.
  • About Lilliputian Systems
  • he Company’s breakthrough solution delivers the only viable small form-factor battery replacement that provides the enormous run-time improvements demanded by today’s CE devices.  Lilliputian’s patented Silicon Power Cell™ technology is based on highly efficient and proven solid oxide fuel cells (SOFCs) and microelectromechanical systems (MEMS) wafer fabrication methods, and is fueled by recyclable high energy butane cartridges.  The technology is reliable, FAA approved and environmentally friendly.  Lilliputian’s solution enables longer run-time by providing a 5-10X improvement in volumetric energy density and 20-40X improvement in gravimetric energy density at a fraction of the cost.
Jac Londe

Markus Kayser - Solar Sinter Project - 0 views

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    In a world increasingly concerned with questions of energy production and raw material shortages, this project explores the potential of desert manufacturing, where energy and material occur in abundance.In this experiment sunlight and sand are used as raw energy and material to produce glass objects using a 3D printing process, that combines natural energy and material with high-tech production technology.
Jac Londe

Mini-bots cooperate to map out building interiors | Crave - CNET - 0 views

  • Mini-bots
  • map out building interiors
  • The rolling droids are being developed by Georgia Institute of Technology, the University of Pennsylvania, and the California Institute of Technology/Jet Propulsion Laboratory (JPL). Equipped with two cameras and laser scanners, they can autonomously explore hallways in an unfamiliar building, detecting doors and windows, and create a map for users such as soldiers or firefighters. The project is part of the Micro Autonomous Systems and Technology (MAST) program and is being sponsored by the Army Research Laboratory. The program is aimed at developing palm-size machines that can hover in place, enter buildings, and perform other insect-like stunts while gathering data and relaying it to human controllers.
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

Tor Project: Overview - 0 views

  • Overview
  • Tor is a network of virtual tunnels that allows people and groups to improve their privacy and security on the Internet. It also enables software developers to create new communication tools with built-in privacy features. Tor provides the foundation for a range of applications that allow organizations and individuals to share information over public networks without compromising their privacy. Individuals use Tor to keep websites from tracking them and their family members, or to connect to news sites, instant messaging services, or the like when these are blocked by their local Internet providers. Tor's hidden services let users publish web sites and other services without needing to reveal the location of the site. Individuals also use Tor for socially sensitive communication: chat rooms and web forums for rape and abuse survivors, or people with illnesses.
Jac Londe

620325 Stirling Engine - ABRA Electronics Inc. - 0 views

  • The 620325 Stirling Engine by Thames and Kosmos uses renewable energy from the sun to drive a generator, which charges a rechargeable battery to power an electric car.
  • Power a Car with Solar Generated Electricity       Discover the Stirling engine, a simple, clean and efficient energy technology that is quickly becoming a viable source of electricity as the availability of fossil fuels declines. The Stirling engine in this kit uses renewable energy from the sun to drive a generator, which charges a rechargeable battery to power an electric car. Named after its inventor, Robert Stirling, the original Stirling engine dates back almost 200 years. Today, high-tech Stirling engines are being used in arrays of giant mirrored solar collectors and common applications like compact generators. NASA is even working on using Stirling engines to power a human outpost on the moon!Like a steam engine, a Stirling engine is a heat engine that converts heat energy into mechanical work, usually to drive a generator that then converts the mechanical energy into electricity. But instead of water and steam, the Stirling engine uses a permanently enclosed volume of gas, such as air or helium, to perform the mechanical work. Stirling engines are highly efficient, can operate very quietly, and can use many different sources of heat: combustion of fuels, nuclear fission, geothermal, or solar heat, as this model uses. The Stirling engine in this kit is located in acharging station with a mirrored parabolic dish. The dish focuses the sun’s rays onto the cylindrical glass bulb of the Stirling engine to heat it up. The air inside the bulb heats up and pushes a piston, which turns an electric generator. The generator produces electricity that charges a rechargeable battery in the car. The car runs on an electric motor powered by the battery.The kit includes the charging station with a beta type Stirling engine, the electric car, and a full-color, 64-page manual.
Jac Londe

Portable PA Systems. AmpliVox Wireless Powered Speaker Voice Projector Kit - 0 views

  • AmpliVox Wireless Powered Speaker Voice Projector Kit This is the most professional and simple solution in wireless presentations systems on the market with black carpeted acoustic speakers and wireless 50 watt amplifier. Adds S1204 Remote Wireless Speaker, universal carrying case, and Two Tripods to The Voice Projector (SW225) for your complete presentation kit!
  • Product Description Audience Size: up to 2,000. Room Size: up to 20,000 sq. ft. No messy cables to trip over. This is a professional portable public address complete sound system with built-in wireless in a  compact lightweight black carpeted cabinet PLUS a wireless powered dual module speaker that can be placed up to 300 feet away. The Wireless Voice Projector is a complete sound system that contains AmpliVox’s powerful 50 watt multimedia stereo amplifier with built-in receiver and 3 mic inputs plus two built-in Jensen designed 6” x 8” oval speakers.  The Powered Dual Module Speaker has a built-in 50 watt amplifier. With built-in tripod mounts both components are designed for placement on a tripod, media cart, or permanent mounting.  The SW225 Wireless Voice Projector can dramatically enhance presentations and communication with mixed media sound line-in for CD tape player or computer projector. It includes both headset and lapel mic and transmitter plus audio cables for laptop & projector.  Each component can be powered with 10 D-cell alkaline batteries (not included) for up to 200 hours; S1460 International AC Adapter/recharger; or S1465 Rechargeable Nicad Battery Pack (requires S1460). Features • Wireless Voice Projector with 2 built-in Jensen speakers • Wireless powered dual module speaker (total of 4 speakers) • For audience size up to 2,500 • For rooms up to 20,000 sq. ft. • 50W multimedia stereo amplifier with built-in receiver • Includes lapel & headset mic with transmitter • Dual Wireless Capability: 2 presenters can be wireless with optional 2nd wireless mic kit. • Built-in Tripod Mount • 2 Tripods • Rugged nylon reinforced Carrying Case on Wheels with Luggage handle What's in the Box • Wireless Voice Projector (SW225) • Wireless powered dual module speaker • Lapel & headset mic with transmitter • 2 Tripods • Rugged nylon reinforced Carrying Case on Wheels with Luggage handle Warranty 6 Years Electronics
Jac Londe

AVG Antivirus and Security Software - Virus Removal - 0 views

  •  
    Antivirus and internet security protection for home and business. 24/7 support and high-speed automatic updates. Products ranging from maximum protection, to basic antivirus protection available for free download.
Jac Londe

PayPal.Me - 0 views

  •  
    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

2012 New Android 4.0 Mini PC MK802 1GB A10 Google TV Player Box Full 1080P HDMI - Detai... - 0 views

  • ndroid 4.0 Mini PC MK802 RAM 512MB ROM 4G mini TV BoxAndroid 4.0 Mini PC MK802 Features:-This is the smallest Android TV player in the world,it looks like a USB flash drive, twice as big as a USB stick,but compared to a regular small Android TV box,the size is only 25%. You can attach it to the back of your TV, easy to hide. -It outputs the video to TV via HDMI, a short HDMI cable is included, it requires your TV to have a HDMI input. -It is powered by a USB cable, this USB cable is included, but you need to purchase a compatible USB adapter (5V,2A),we can also give it to you if you tell me which country you are from, we will know what kind of USB adapter you need. -It has a regular USB port, you can connect your USB mouse or keyboard here, you can also connect a 2.4GHz wireless mouse and keyboard dongle here,please be noted that mouse and keyboard are not included. -It also has a micro USB port which can be used to connected to your PC. You can use it to copy files from your PC to this little guy. -It also has a micro TF card slot, you can insert a micro TF card with up to 32GB of movie or pictures here. -It doesnt have an ethernet port, you need to use WIFI to connect it to the internet. -It also no RGB port,no S-video port, no built-in IR,no built-in bluetooth. Are you still not clear ?-Connect this (mini CPU) to a monitor and a mouse (Fly mouse or USB mouse). -Switch ON both monitor and this player. -You’re ready to run Android 4.0 OS. -No other thing is needed. -Yes! really. It’s a complete CPU. You can play most of the latest 3D and 2D games available in market. -Performance of this device is comparable with smartphones.Specifications of Android 4.0 Mini PC -OS: Android 4.0
  • -Main Chip: Allwinner A10/ 1.5 GHz Cortex-A8 -Memory: 1GB -Storage: 4GB -Graphical processor: 2D/ 3D/ OpenGL ES2.0(AMD Z430)/OpenVG1.1(AMD Z160) 27M Tri/sec -Network: Wireless 802.11b/g, WAPI(Ralink8188) -Expand Memory: Micro TF 2-32GB -IO/Ports: Micro 5pin USB/ USB2.0 data transfer/ OTG and host expand -Keyboard: Support virtual keyboard, support 2.4G wireless keyboard, fly mouse -Audio: AAC, AAC+, eAAC+, AMR-NB, AMR-WB, QCP, MP3, WMA, WAV, MIDI, M4A -Video: WMV/ASF/MP4/3GP/3G2M4V/AVI/MJPEG/RV10/DivX/VC-1/MPEG-2/MPEG-4/H.263/H.264/720P, 1080P, 720*480-Andriod APP: Youku,Tudou,QQ,Youtube,Twitter,AngryBird,Office,Gmail,Browse,Skype -HDMI: 1080P, 2160P  
Jac Londe

U49325 Sun Runner Stirling Engine - ABRA Electronics Inc. - 0 views

  • The U49325 Sun Runner Stirling Engine is a solar-powered Stirling Engine which offers a dramatic demonstration of energy conversion.   This motor and its parabolic mirror can be attached to any conventional camera tripod. When properly aimed at the sun, the polished aluminum parabolic mirror focuses incoming solar energy on the heat cap of the engine, which is converted to rotary motion. Unit comes complete with motor, parabolic mirror, and wrenches. Standard camera tripod is not supplied. This engine is completely assembled and ready to run. Each unit is test run at the factory prior to shipping. Motor runs at 2,000 RPM and up. This engine can also run as a horizontal engine with an alcohol burner. Demonstrate this exciting method of harnessing the sun’s clean and renewable energy to your students.  Weight: 6.00 lbs Dimensions: Engine: 8.25 x 3 inches (L x W) Flywheel: 3.25 inchesParabolic Mirror: 18 inch diameterPlease note that this item is designed to demonstrate the operating principles of a Stirling engine for educational use and is not designed for power production.  It can potentially be coupled with a generator for producing very small amounts of electricity but is incapable of powering anything beyond a small light bulb or LED.
Jac Londe

How Apple and Amazon Security Flaws Led to My Epic Hacking | Gadget Lab | Wired.com - 0 views

  • In the space of one hour, my entire digital life was destroyed. First my Google account was taken over, then deleted. Next my Twitter account was compromised, and used as a platform to broadcast racist and homophobic messages. And worst of all, my AppleID account was broken into, and my hackers used it to remotely erase all of the data on my iPhone, iPad, and MacBook.
Jac Londe

MeeGo | WeTab - 0 views

  • WeTab presents the first tablet with open operating system MeeGo
  • Working intensively with Intel, we have developed the WeTab OS with MeeGo to meet the requirements of a tablet user in the best way possible. The tablet runs extremely fast
  • The Web-browser plays a special role here and is based on the free HTML rendering engine WebKit, enabling fast and unrestricted surfing enjoyment including HTML5, Adobe Flash® and Java™.
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  • MeeGo is a Linux-based, open-source operating system intended to run on a variety of hardware platforms including smartphones, handhelds, netbooks, televisions that are connected to the Internet and passenger cars.
  • MeeGo is a multi-platform project and supports the X86/Intel-Atom and ARM architectures. It can be transferred to other hardware platforms at any time.
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    New Linux OS, New WebPad, Good Old Intel.
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.
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