Less fascinating than the old radio technology by “internet radio” we are able to send “radio” communication far beyond the range of “wireless” radio. In the current and in following articles, we would like to approach the topic of radio and audio broadcasting on TCP/IP network and its integration with radio repeaters, in order to build something like “hybrid” radio links. The example proposed in the article is based on Raspberry Pi that is, by now, the preferred platform for our tutorials on GNU/Linux embedded world. In this first issue we are depicting how to build a portable internet “radio”, it is a device suitable for receiving and managing radio and audio streaming carried by an internet connection, both wired and wireless. We will also cover the management of audio track playlists stored on USB keys or on network shared disk drives. Streaming trasmission requires sending a flows of TCP/HTTP packets containing bunches of digitazed audio from production and distribution servers to clients scattered all over internet networks, where the streaming itself will be turned again into audible sounds.
Yesterday I published some performance benchmarks indicating Intel ultrabook performance might be a bit slower on Linux 3.16 when comparing a recent Git kernel against Linux 3.15 stable. Today I have some results from a very different system: numbers on the very high-end Intel Core i7 4790K "Devil's Canyon" desktop rig.
With doing the comparison again of Linux 3.15 stable against Linux 3.16 Git, in a number of tests the performance was measurably slower with the newer code still under development. In a majority of the tests the performance was about the same, but in none of the cases was there any significant performance gains for this system.
Amptek is prepping a uClinux- and Cortex-M3 based “iCon” SBC for IoT, equipped with WiFi, Bluetooth 4.0, USB, and CAN, and running on under half a Watt.
uClinux on a microcontroller represents the simplest expression of the Linux operating system, sort of the flipside to Android or Ubuntu on the high end. Despite this platform’s limitations, however, it draws only a smidgin of electricity, and provides a capable wireless platform while also supplying numerous industrial interfaces. All these attributes are showcased by the iCon single board computer (SBC), which probably deserves more than being stuck in the doldrums on Kickstarter, with nine days left to go.
Alpine Linux is not a distribution designed for beginners. In fact, it’s exactly the opposite. Users will need to be well accustomed to use a terminal. For example, you have to work a little just to install a desktop environment.
“The Alpine Linux project is pleased to announce the immediate availability of version 3.0.1 of its Alpine Linux operating system. This is a bugfix release of the v3.0 musl based branch. This release is based on the 3.14.8 kernel which has some critical security fixes,” said the developers in the shortlog.
OpenELEC has been updated to 4.0.5 in this NOOBS release. In addition to the XBMC update (which is undoubtedly the most important change), there are lots of security fixes and general bugfixes — some of which were specific to the Raspberry Pi version, so this is particularly good news for RPi users. It also includes support for some more WLAN chips, updated Raspberry Pi firmware, and it even updates the Linux kernel to 3.14.7, which is even newer than what is included in the Raspbian distribution. Good stuff.
Between the upcoming Fedora 21 release, involvement in Red Hat's Project Atomic, its planned re-structuring under Fedora.next, and its new leader, Matthew Miller, the Fedora Project has a lot going on lately. All of the upheaval is a sign that the distribution is doing what it must to stay relevant in the new world of distributed, scale-out computing, says Miller who took over as project leader earlier this month after his predecessor Robyn Bergeron announced her departure in May.
Two years ago, when the Raspberry Pi launched, it was with the intention of improving IT education in the UK. Since then more powerful, better connected or cheaper boards have come onto the market, but the Pi retains its position as the white knight of ICT teaching.
Why? Because of the community of users that has grown up around it. To find out more we travelled west to Manchester, venue for the second annual Jamboree—a festival of educators, makers and messer-abouters focussed on highlighting how engaging the Pi can be. There, we met 75% of the Raspberry Pi Foundation’s education team—Ben Nuttall, Clive Beale, and Carrie Anne Philbin—to discuss IT teaching in the UK.
Parsix GNU/Linux 6.0r1, a live and installation DVD based on Debian, aiming to provide a ready-to-use, easy-to-install desktop and laptop-optimized operating system, has been released for testing.
The developers' ultimate goal is to offer customers an easy-to-use OS based on Debian's Wheezy branch, which employs a release of the GNOME desktop environment. The devs have made a few minor modifications to the desktop and now it's much easier to set it apart from other distros.
I was wondering what was ‘L’ in Android, until someone pointed out “maybe it’s Linux”. In all honestly I don’t think it’s L for Linux, but a wishful thinking doesn’t hurt given the fact that Google is putting Linux ‘everywhere’.
Linus Torvalds may have never dreamt of this day when he sent out that email back in 1991 and said, “I’m doing a (free) operating system (just a hobby, won’t be big and professional like gnu) for 386(486) AT clones.”
Steven J. Vaughan-Nichols, writing for ZDNet, once again reminds us that Linux dominates supercomputers. SJVN linked to the latest Top500 group results, showing Linux makes up for 97% of the five hundred fastest computers in the world. This is the biggest of the big iron, the top supercomputer has 1,024,000 GB of RAM and 3,120,000 Intel Xeon cores, running Kylin Linux.
With Linux being the clear OS of choice among the hot rod builders, where does proprietary Unix fit into the picture? Increasingly, the answer appears to be that it doesn't.
Not only does Linux power all of the top 10 machines on the June 2014 list -- including China's winning Tianhe-2, which stole the show once again with its performance of 33.86 Petaflop/second (Pflop/s) on the Linpack benchmark -- but it also now accounts for a full 97 percent of the full set of 500. A mere 15 supercomputers on the list *don't* use Linux, including 12 using Unix and just two using Windows. (The last one is described simply as "Mixed.")
Google on Wednesday kicked off its I/O conference in San Francisco, presenting devs with a dizzying array of possibilities: a new design language for Android L; a boatload of new apps, APIs and SDKs; and expanded support for a variety of architectural and hardware configurations. "If I were a developer, I would feel real good about opportunities today," said ABI analyst Jeff Orr.
At Google I/O, Google previewed Android 5.0′s new UI, and also unveiled Android TV and Android Auto, while offering new details on Android Wear.