Home Blog  





11 Apr 2014

ELECTRONIC-TATTOO

Yonggang Huang who together with Professor John Rogers led the project explained “We designed this device to monitor human health 24/7, but without interfering with a person’s daily activity, what’s important about this device is it is wirelessly powered and can send high quality data about the human body to a computer, in real time”. In a side by side comparison with conventional EKG and EEG monitor skin probes they found the wireless patch performed equally well but was significantly more comfortable and less invasive for patients. In addition to monitoring health and fitness data the sensors could also prove useful in identifying body movements characteristic of the early stages of neurological disorders such as Parkinson’s.

“The application of stretchable electronics to medicine has a lot of potential,” Huang said. “If we can continuously monitor our health with a comfortable, small device that attaches to our skin, it could be possible to catch health conditions before experiencing pain, discomfort and illness.”

Photo by John A. Rogers

Smart Band-Aid Wirelessly Monitors Health - [Link]

10 Jan 2014

Murata SN8200 Wireless Development Kit+ is a self-contained, Broadcom-based, 802.11 b/g/n Wi-Fi network controller module that provides serial-to-Wi-Fi connectivity to the Internet. It provides the necessary protocols for devices communicating with the Internet. In a compact size, SN8200 integrates an ARM Cortex M3-based controller, Wi-Fi BB/MAC/RF IC, RF front end, flash memory, clocks, and on-board antenna in one small form factor. The device has everything you need in setting up your own wireless network, making it ideal for applications such as stand-alone webservers, smart medical and fitness devices, and even for home automation or industrial control monitoring.

Setting up the module is fast and easy. Included on the software CD is the EZ Web Wizzard™, a custom software by Murata that supports easy web-based control.  There is also a Quickstart Guide pdf for your reference. Going through theEZ Web Wizzard™ will help you process and install the Simple Network Interface Controller (SNIC) and after that you can install the drivers and start connecting to the device. Read the rest of this entry »

27 Nov 2013

Cortado connects your physical things to the digital world.  Itʼs an Arduino that youʼll never plug in, and it works on all your favorite platforms including mobile (Mac, Windows, iOS, Android).  It connects via Bluetooth Low Energy, an efficient protocol meant for supporting low-power sensors.  If there ever was a building block for the Internet of Things, this is it.

It’s so easy to interact with Cortado, we think it will inspire an entirely new interaction flow.  To illustrate this, the pre-ordered units will be turned on before they ship. If you download our app, you will get a BLE notification on your iPhone when your Cortado is nearby. Youʼll even be able to program it while it’s still in the box!

For the next month we will be holding a pre-order campaign featuring our new product. This campaign includes a special pre-order discounted price for all backers. It will launch at $18 and will increase every day as the month goes on reaching a maximum of $24, which is discounted 20% from the retail price ($30).

Cortado – Zero wires. Infinite uses - [Link]

13 Nov 2013

article-2013october-understanding-the-basics-of-low-noise-fig3

By Bill Schweber:

In a wireless design, two components are the critical interfaces between the antenna and the electronic circuits, the low-noise amplifier (LNA) and the power amplifier (PA). However, that is where their commonality ends. Although both have very simple functional block diagrams and roles in principle, they have very different challenges, priorities, and performance parameters.

How so? The LNA functions in a world of unknowns. As the “front end” of the receiver channel, it must capture and amplify a very-low-power, low-voltage signal plus associated random noise which the antenna presents to it, within the bandwidth of interest. In signal theory, this is called the unknown signal/unknown noise challenge, the most difficult of all signal-processing challenges.

Understanding the Basics of Low-Noise and Power Amplifiers in Wireless Designs - [Link]


8 Nov 2013

obr1418_1

Keyboard, display, sensor or other device can be connected by means of Bluetooth modules even without cables.

Many times, it´s more practical to have devices interconnected wirelessly. Whether we need a simpler transfer of values from some sensor or a more complicated data communication between two devices, Bluetooth modules will manage it without a long development. Bluetooth technology with their range of 10m or up to 100m (Class 1) usually suit to many purposes where a cable connection is undesired or even impossible.

Bluetooth modules from company Rayson are based on various Bluetooth chips from a renowned company CSR, which determine main features of a given module. On stock we keep several types for example the favorite BTM-112 (Class 2) or BTM-222 (Class 1). Modules contain their own firmware, so it´s not necessary to know a functionality of given Bluetooth chips in detail, but for the most of applications it is sufficient to use configuration commands sent via UART port.

Versatility of modules is mainly in the fact, that they are able to transfer virtually any data, that´s why they can be used for controlling of peripherals, audio transmission etc. and everywhere, where there range and data transfer speed of Bluetooth protocols are sufficient.

Where a cable can’t, a Bluetooth can - [Link]

6 Nov 2013

obr1416_2

Wireless technology IQRF was introduced to you in our recent article „IQRF – a wireless technology which breaks barriers“ and in our SOS webinar „How to integrate wireless technologies into your devices without a long-term programming?”. In the time of publishing of the previous article, was the IQRF Alliance launch in a status of intensive preparation. With pleasure we announce you, that from now it´s possible to deploy IQRF Alliance services and to make your development of wireless applications even easier.
What´s all that about? IQRRF Alliance opens to manufacturers, system integrators and installation companies an opportunity to quickly and cost-effectively make all the electronic products wireless without any programming.

IQRF Alliance focuses on extremely easy integration of smart wireless solutions prevailingly in the segments of Indoor Lighting, Outdoor Lighting, Building, Smart Home Automation and many other. Thanks to the revolutionary and patented concept of Direct Peripheral Access and Hardware Profiles, IQRF Alliance members can simply integrate wireless communication and networking into their devices or systems by a simple circuit of a wireless module with a universal DPA application. This will enhance an existing or just developing product with a possibility to communicate in a wireless network, receive and transmit data. DPA moreover ensures a full compatibility of all products using this protocol. New, fully compatible product can be this way launched on the market within few weeks.

IQRF Alliance members will be able to easily and quickly innovate their devices with a wireless connectivity, incorporate full MESH networking into their systems and to use a portfolio of fully compatible products of other IQRF Alliance members.

All details regarding a membership are available at www.iqrf.org/alliance. Membership is without any membership fees. The only “fee” is a 1000 EUR annual credit, i.e. it´s not a fee but a credit for a purchase of IQRF components (transceivers, development boards and kits,…).

IQRF technology features, description of a new IDE4.13 development environment and a new OS3.04 operating system, as well as advantages of membership in the IQRF Alliance can be uncovered already on 23.10.2013 in our SOS webinar about IQRF.

IQRF Alliance brings programming-free wireless networking - [Link]

24 Oct 2013

Untitled-1

By Shawn Rhen:

Despite the initial investment, solid state lighting (SSL) has proven to be a viable alternative over conventional technologies due to the combined savings in energy consumption and maintenance costs, as well as design flexibility. Furthermore, increased energy savings can be realized with active intelligence such as occupancy and ambient light sensors, as well as external dimming controls to eliminate excessive lighting. Since there are a wide variety of constant current LED drivers requiring a 0-10 volt DC input for dimming control available, the focus of this discussion will be utilizing these drivers with a wireless interface.

Wireless Control of Linearly Dimmed LED Drivers - [Link]

12 Sep 2013

ossia-cota-technology

Wireless power. It’s less sci-fi sounding than it once was, thanks to induction charging like that based on the Qi standard, but that’s still a tech that essentially requires contact, if not incredibly close proximity. Magnetic resonance is another means to achieve wireless power, and perfect for much higher-demand applications, like charging cars. But there’s been very little work done in terms of building a solution that can power your everyday devices in a way that doesn’t require thought or changing the way we use our devices dramatically.

Cota By Ossia Aims To Drive A Wireless Power Revolution And Change How We Think About Charging - [Link]

11 Sep 2013

Flutter is an open source ARM-powered wireless Arduino with 1000m+ (3200 ft) range and 256-bit AES hardware encryption.

Flutter is a wireless electronics development platform based on Arduino. With over 3200ft (1km) of usable range, a powerful ARM processor, and integrated encryption, Flutter makes it easy for you to build projects that communicate across the house, across the neighborhood, and beyond.

Whether you want to check the temperature of a beer-brewing setup, have your mailbox send you a text message when the mailman arrives, control a swarm of flying robots, or just turn on your lights with your phone, Flutter gives you the range, power, and flexibility to do it.

Flutter: $20 Wireless Arduino with half mile (1km) range - [Link]

20 Aug 2013

article-2013aug-selecting-rf-connector-wireless-system-fig2

By Bill Schweber

The explosive growth of “wireless” systems has led to a simultaneous expansion in the use of RF connectors and their associated cables. These assemblies are increasingly vital links between multiple circuit boards, between antennas and front ends, and between power amplifiers (PAs) and antennas. They are instrumental to the operation of such wireless devices and systems as cellular telephones, wireless data networks and advanced radar and electronic-warfare (EW) systems.

Connectors for RF systems have the simple yet critical task of transferring signals from one location to another, with little or no change to the signal (although in reality even with high quality RF cable between the antenna connector and the antenna engineers often factor in a 0.2 dB loss per coaxial connector in addition to the cable attenuation itself).

Selecting an RF Connector for your Wireless System - [Link]



 
 
 

 

 

 

Search Site | Advertising | Contact Us
Elektrotekno.com | Free Schematics Search Engine | Electronic Kits