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Dell Streak

$549.99

Locked to Rogers network. Hardware only (no cont

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.

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

Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments.

Processing is an open source programming language and environment for people who want to create images, animations, and interactions. Initially developed to serve as a software sketchbook and to teach fundamentals of computer programming within a visual context, Processing also has evolved into a tool for generating finished professional work. Today, there are tens of thousands of students, artists, designers, researchers, and hobbyists who use Processing for learning, prototyping, and production.

NEW - The DCS-930L Wireless N Network Camera

Simply connect the cables, plug in the camera, run the short installation wizard and setup is complete. To view what the camera is seeing, simply log on to mydlink.com, choose your device, and start viewing - there is no need to configure your router to open up ports or remember hard-to-memorize Internet addresses.

Easily View and Manage Your Camera from mydlink.com Sleek and compact design that fits in the smallest corners of your home Wireless Connectivity Ready to Use in 3 Simple Steps Works with the mydlink iPhone app for on-the go viewing

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

Z-Wave is a wireless communications protocol designed for home automation, specifically to remotely control applications in residential and light commercial environments. The technology uses a low-power RF radio embedded or retrofitted into home electronics devices and systems, such as lighting, home access control, entertainment systems and household appliances.

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:

Hicks, R. Andrew, "Designing a Mirror to Realize a Given Projection," J. Opt. Soc. Am. A, vol. 22, No. 2, Feb. 2005

developer site for iGoogle, Google's personalized homepage. Gadgets on iGoogle now support canvas view and OpenSocial, a common set of APIs, HTML, and JavaScript designed to let you easily build social applications. Build and test your gadget in the new sandbox for iGoogle.

iGoogle gadget dashboard to manage gadgets created by you and browse gadgets developed by others.

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

The conversion of sunlight into electricity has been dominated by photovoltaic and solar thermal power generation. Photovoltaic cells are deployed widely, mostly as flat panels, whereas solar thermal electricity generation relying on optical concentrators and mechanical heat engines is only seen in large-scale power plants. Here we demonstrate a promising flat-panel solar thermal to electric power conversion technology based on the Seebeck effect and high thermal concentration, thus enabling wider applications. The developed solar thermoelectric generators (STEGs) achieved a peak efficiency of 4.6% under AM1.5G (1 kW m−2) conditions. The efficiency is 7–8 times higher than the previously reported best value for a flat-panel STEG, and is enabled by the use of high-performance nanostructured thermoelectric materials and spectrally-selective solar absorbers in an innovative design that exploits high thermal concentration in an evacuated environment.

APK Android app files

DIY Android Modular Gadget Platform

The DIY Android kit also comes with a custom-tailored bootable Android SD card, with drivers and kernels specially designed to run Android applications on the system