The Yun board for Arduino aims to take DIYers into the cloud. The Yun is the first of a family of low cost, low power Arduino boards that run Linux and support Wi-Fi, following the trend toward the Internet of Things (IoT). Yun, named for the Chinese word for cloud, is designed to let the average tinkerer link a new Linux gadget to the Web using a simplified browser interface.
Yun links to the Web via the Hornet AR9331 Wi-Fi chip from Qualcomm Atheros, which supports 2.4 GHz networking and runs a custom distribution of Linux. The Yun roadmap features five products and two separate product families, including some boards designed to run up to four years on two AA batteries. [via]
Arduino Takes You into the Cloud - [Link]
STMicroelectronics has introduced its latest generation of energy-efficient power devices that reduce the environmental impact of equipment such as telecom or computing systems, solar inverters, industrial automation and automotive applications. The new STripFET VII DeepGATE MOSFETs deliver the best conducting efficiency among currently available 80V and 100V devices, while switching efficiency is also increased.
The critical advance in the new technology is an enhanced MOSFET gate structure, which lowers device on-state resistance while also reducing internal capacitances and gate charge for faster, more efficient switching. The devices also have high avalanche ruggedness to survive potentially damaging hard conditions, which makes them a strong choice for automotive applications.
STMicroelectronics introduces Greener MOSFETs - [Link]
Dave explains the Dickson Doubler building block circuit. a.k.a diode charge pump. Use a spare microcontroller pin, some diodes, and capacitors to create a useful voltage doubler or voltage multiplier.
EEVBlog #473 – Microcontroller Voltage Doubler - [Link]
Here is a design guide from Maxim describing various classes of audio amplifiers. [via]
This has been a brief survey of the many types of audio amplifiers commonly used in designs today. Clearly, when designing an audio circuit for any type of device, care should be taken in determining the audio amplifier topology best suited to the application. A good understanding of these different classes of audio amps will help you choose the best audio amp for your design.
App note: Various audio amplifier classes - [Link]
Do you want to many processors on one board? Check this out. UDOO is an open hardware, low-cost computer equipped with an ARM i.MX6 Freescale processor for Android and Linux, alongside Arduino DUE’s ARM SAM3X, both CPU integrated on the same board! UDOO takes your DIY projects to the next level and it’s a powerful tool for education and creativity. UDOO could run either Android or Linux, with an Arduino-compatible board embedded.
We are delighted to announce a new mini-Pc board, UDOO, which integrates two processors, ARM i.MX6 by Freescale (for Android & Linux) and ARM SAM3X of Arduino DUE in a single board measuring 4.33 inch x 3.35 inch (11cm x 8.5cm).
On April 9th we launched a Kickstarter campaign which already reached the target of $27,000 in barely 2 days and keeps growing having raised 1700% over its target.
UDOO was conceived to both expedite the rapid prototyping of professional solutions and to support teaching activities in the field of physical computing, internet of things and interaction design. With the goal of promoting the use of the board in these domains we have built an international network of 5 universities: Carnegie Mellon University, USA; Aarhus University, DK; Siena, IT; OCADU Toronto CA; University of California San Diego, USA in order to share teaching experiences and to present solutions to create an open community accessible to everyone.
UDOO: Android Linux Arduino in a tiny single-board computer - [Link]
FluxProbe is a test prod for measuring currents without touching the conductor it is flowing through. More acurately it is measuring the magnetic flux. This way you can measure currents on PCB traces without having to put a resistor in between. This test gear enables you to trace faults in your PCB (for example search for a short circuit). This is usefull for commissioning of you circuit for example.
FluxProbe – measure currents without touching the conductor - [Link]
Brian from teho Labs has been working on creating a power supply – the quietPower:
quietPower is a power supply under development at teho Labs to provide a low noise bipolar output. This is essential for creating high quality measurement systems.quietPower is still under development, when it is finished full schematic and a parts list will be made available.
quietPower, a low noise switch mode power supply - [Link]
Lantronix xPico module is a highly flexible network connectivity solution for serial interface devices.
Lantronix xPico is thanks to its miniature dimensions (smaller than a usual SD card) suitable even for designs typically intended for chip solutions.
The key difference with the xPico is that there is virtually no need to write a single line of code (FW), resulting to a much lower development cost and faster time to market. The xPico is based on the industry-proven Lantronix device server with a relatively very easy to integration to a target device. Built-in web-manager enables a quick and comfortable configuration.
xPico is suitable for all devices, where it is physically necessary or convenient to use a module with miniature dimensions and a low profile. With the xPico you´re free to place an RJ45 connector according to your demands. That´s why it is possible to utilize the xPico even in space critical designs, where for example the Lantronix XPort wouldn´t suit. Detailed information will provide you the xPico user guide and the xPico integration guide. For a development support also the xPico development kit is available. In case of interest, please contact us at firstname.lastname@example.org.
Do you need a chip-sized Ethernet ? – [Link]
Easy Pulse is a DIY pulse sensor that uses Photoplethysmography principle over a finger tip to detect the cardio-vascular wave or PPG signal. The sensor outputs a clean analog PPG signal as well as a digital pulse signal that is synchronous to the heart beat. The sensor can be interefaced to Arduino or any other microcontroller platform to make a DIY pulse meter or heart rate monitor. The sensor is designed by Embedded Lab and is now available from Elecrow for only $18.50.
Easy Pulse Sensor is now available for purchase from Elecrow - [Link]
manekinen @ mdiy.pl builds a 400KHz function generator based on ICL8038. He writes:
Function generator with adjustable frequency from 0 Hz to over 400 kHz, adjustable amplitude, DC offset, duty, and of course the function selection – square, triangle, and sine. Generator based on good old ICL8038 integrated chip generator that gives pretty good shaped signals as for amateur purposes.
400kHz function generator with ICL8038 - [Link]