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http://www.open-electronics.org/pi-top-is-a-raspberry-pi-laptop-you-will-learn-to-build-yourself/?utm_content=bufferdb5b0&utm_medium=social&utm_source=facebook.com&utm_campaign=buffer

Pi-Top is a Raspberry Pi laptop you will learn to build yourself! This wonderful project explores the borders between hacking, learning computers, hacking and electronics: it's a kit you can hack and a learning course you can use to teach people how to create real hardware: Pi-Top provides a platform to expand your knowledge in hardware creation. The kit takes you…

MakerCon: James Adams & Matt Richardson Interview - James Adams, Director of Hardware Engineering Raspberry Pi Foundation & Matt Richardson, Contributing Editor Make:

Raspberry Pi gets power and connectivity upgrades

The Raspberry Pi has seen its first significant change, with the launch of the B+. With more sensors and accessories, users of the B+ can now build bigger and better projects.

The board features upgraded power management and connectivity. Up to 1.2A can be delivered to the USB ports to support up to four devices, whilst a 40pin extended GPIO socket enables more sensors, connectors and expansion boards to be added. The first 26 pins remain identical to the original Raspberry Pi Model B for 100% backward compatibility. The new board is available from element14 and RS Components.

"The Raspberry Pi B+ marks the first major redesign of what has been one of the stand out tech products in the last few years," says Claire Doyle, global head of Raspberry Pi at element14. "We've already seen the board drive some amazing designs, but the B+ model opens up the opportunity to push the boundaries of complexity and innovation to make even bigger and better projects. It is also the board that can open up a whole new area of learning for young people."

While the board retains the Broadcom BCM2835 chipset and 512Mbyte of RAM, the B+ has a micro SD slot. According to element14, the B+ board consumes less power than the Model B.

Eben Upton, CEO of Raspberry Pi Trading, comments: "We've been blown away by the projects that have been made possible through the original B boards and, with its new features, the B+ has massive potential to push the boundaries and drive further innovation."

Author
Graham Pitcher

Integrated devices said to solve RF problems

Peregrine Semiconductor has introduced two integrated products – a True DC switch and an X-band core chip, both built using the company's UltraCMOS technology.

"Peregrine has introduced a broad range of industry leading integrated products and technologies over its more than 25 year history," said Duncan Pilgrim, vice president of marketing. "Today, we continue that legacy of innovative integration with two groundbreaking products that include RF, digital and analogue components on a single die."

At the lower end of the frequency spectrum, Peregrine claims it has set a new standard with the first RF integrated switch to achieve true DC capability. With a frequency range from 0 to 8000 MHz, the PE42020 is said to effectively operate in a previously unobtainable portion of the frequency spectrum. This frequency expansion will be attractive to those who rely on accuracy and precision, such as test and measurement.

The PE42020 features an IIP3 performance of 63dBm and port to port isolation of 37dB at 6GHz. It supports 1.8V and 3.3V control logic and operates in temperatures ranging from -40 to 85°C.

Meanwhile, higher frequencies are addressed with an integrated X-band CMOS chip that applies MMIC design techniques to offer accurate signal control with minimal power loss. These design techniques, such as Lange couplers, have only been used by III-V technologies because of silicon's lossy nature at higher frequencies. Peregrine says it has solved this challenge by using an UltraCMOS sapphire substrate.

Author
Graham Pitcher