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Mathematica and the Wolfram Language on Raspberry Pi: a guest post from Wolfram Research

Raspberry Pi -

Have you been staring at the Mathematica and Wolfram Language icons on your Raspbian install, and wondering where to get started? We’ll be featuring several guest posts from Wolfram Research in the coming weeks, so you can start to get to work with them. This first, introductory post is from Arnoud Buzing. Arnoud and the Wolfram team would welcome your feedback in the comments below; so would we. Let us know what you’d like to do with Mathematica and the Wolfram Language – it’ll help shape future posts from Wolfram.

A few weeks ago, on November 21st, we released the Wolfram Language and Mathematica for the Raspberry Pi. Just this past week, it’s become even easier to get the software since The Raspberry Pi Foundation began bundling Mathematica and the Wolfram Language directly with their standard NOOBS package and Raspbian operating system.

The responses to this pilot release have been overwhelmingly positive. It has been great to read tweets from educators, scientists, hobbyists and students all around the world, who are excited about using the Wolfram Language to explore the computational universe on their devices.

Today, Wolfram Research is perhaps most widely known for its computational knowledge engine called Wolfram|Alpha: for many students a website which makes short order of complicated homework problems by providing step-by- step solutions. But to create this website a great many problems had to be solved in a very general and systematic way. It only made sense then to build Wolfram|Alpha in the Wolfram Language.

This language differs from other computer languages in that it is very high level with built-in support for solving a very wide variety of computational problems. For over 25 years this language has grown from being able to compute with simple symbolic expressions to the computational knowledge engine it is today. And this feature of making knowledge computable, as well as its powerful ability to create complex programs with very little code, makes it a great language to run on a Raspberry Pi. It also interfaces extremely well with the ‘outside world’ thanks to its large array of supported data collecting sensors and its GPIO. A few great user examples have already been shared on the Wolfram Community website and I would like to share them here with you.

A recent post from Diego shows how to cook your steak using your Raspberry Pi. In this post he writes a small mathlink wrapper to read thermocouple measurements, which he calibrated by using a LinearModelFit on three data points. All this is then hooked up to a controller which turns a crockpot on or off using DeviceWrite["GPIO",17->1] or DeviceWrite["GPIO",17->0].

Another post from Diego shows how you can connect a Wii Nunchuck via an Arduino Uno to Mathematica over a serial connection. First he opens a serial connection using serial=DeviceOpen["Serial", {"/dev/ttyACM0", "BaudRate"->57600}] and then he interfaces with the sketch running on his Arduino by sending a ping over that serial link and reading back the current Wii Nunchuck state using DeviceReadBuffer[serial].

Bob posted a cool example showing how you can write a simple stepper motor controller using the Wolfram Language. He defines a stepMotor function which takes three arguments: the number of steps, the direction and the step time delay.

There are several other simple examples that are worth checking out if you’re just getting started:

 

 

 

This could be LG’s webOS-powered TV

Liliputing -

There are plenty of TV sets that come with apps that let you stream media from Netflix, Pandora, and other online media sites. Some even come with Google TV built-in. But LG is planning something a bit different for its next smart TV.

LG is reportedly getting ready to showcase its first television powered by webOS software, the web-centric operating system originally developed by Palm.

Now @evleaks has posted what may be the first picture of the second coming of webOS.

Earlier this year LG acquired most of HP’s webOS technology after HP tried and failed to market webOS phones and tablets a few years ago. LG doesn’t plan to use webOS for mobile devices though — instead the company has been tweaking the software for use on televisions.

WebOS may never have been as popular as Android or iOS, but the platform won some fans for its innovative multitasking system which grouped running apps together as “cards” that you could view at a glance or swipe away when not in use. But what really makes webOS tick are the developer tools — most apps that run on webOS are basically designed using the same code you’d use to write a web app. This makes it relatively easy for web developers to write apps for webOS.

It also means that webOS could be a powerful platform for connecting your TV to internet apps such as YouTube, Facbeook, Twitter, Skype, and more. Those are just some of the web app icons shown in the image obtained by @evleaks.

The user interface also looks a bit different from the webOS we last saw on the HP TouchPad tablet. There are still cards, but they’ve been moved to the bottom of the screen, while notifications stay in the upper right corner — and it looks like the entire user interface can appear on top of live TV broadcasts, letting you keep watching TV while you check the weather or otherwise plan your next move.

via Engadget

This could be LG’s webOS-powered TV is a post from: Liliputing

Democracy Now! Thursday, January 2, 2014

Democracy Now! BitTorrents -

Headlines for January 02, 2014; Newly Elected Mayor Bill de Blasio: NYC Cannot Become the "Exclusive Domain of the One Percent"; Harry Belafonte Urges de Blasio to Fight Poverty, Stop-and-Frisk & "Dickensian Justice System"; Public Advocate Letitia James: Time to Tackle "Gilded Age of Inequality" in New York City; "We Will No Longer Stay Silent To This Classism": NYC Youth Poet Laureate Ramya Ramana; Exclusive: Dying Lawyer Lynne Stewart's Jubilant Return Home After Winning Compassionate Release

Lenovo expands smartphone lineup with first LTE model and a 6 inch phone

Liliputing -

Chinese PC maker Lenovo has been offering smartphones in its home country and other select markets for the past few years. While there are still no plans to bring those phones to the United States, Lenovo is unveiling 4 new models in advance of next week’s Consumer Electronics Show, the biggest gadget show of the year in the US.

Lenovo’s new phones include the company’s first model to sport 4G LTE capabilities and a new model which blurs the lines between phone and tablet with a large 6 inch screen.

Lenovo Vibe Z

Lenovo Vibe Z with LTE

The Lenovo Vibe Z is the company’s new flagship phone. It sports a 5.5 inch, 1920 x 1080 pixel IPS display, a 2.2 GHz Qualcomm Snapdragon 800 quad-core processor, 2GB of RAM, up to 16GB of storage and Android 4.3 software.

It has a 13 MP rear camera and a front-facing 5MP camera with an 84 degree lens for wide-angle shots and a 3000mAh battery for up to 33 hours of talk time.

The Vibe Z will launch in February in select countries including Indonesia, Malaysia, the Philippines, Saudi Arabia, Thailand, and the United Arab Emirates. It’s expected to sell for $549 and up.

Lenovo S930 and S650

Lenovo is also expanding its mid-range S series phones with a new S930 featuring a 6 inch, 1280 x 720 pixel display and a smaller S650 with a 4.7 inch, 960 x 540 pixel screen.

Lenovo S930 / Lenovo S650

These phones feature MediaTek 6582 quad-core processors, 1GB of RAM, 8MP cameras, 8GB of storage, and Android 4.2 software. The S930 will have a starting price of $319 and the S650 will sell for $229 and up. Both phones supports 802.11n WiFi, Bluetooth 3.0, and HSPA+ connectivity.

The 6 inch model has a 1.6MP front-facing camera and a 3000mAh battery. The 4.7 inch phone has a 0.3MP front camera and a 2000mAH battery.

They should be available in markets where Lenovo sells phones starting this month.

Lenovo A859

At the budget end of the spectrum, Lenovo is launching a model with a 5 inch, 1280 x 720 pixel display, an 8MP rear camera, 1.6MP front camera, 8GB of storage, 1GB of RAM, and a MediaTek 6582 quad-core processor.

Lenovo A859

The phone supports dual SIM cards, features WiFi, Bluetooth and 3G and has a 2250mAh battery.

It’s available now in select countries for $219 and up.

 

Lenovo expands smartphone lineup with first LTE model and a 6 inch phone is a post from: Liliputing

Obama pushes program to turn public schools over to corporations

Socialism OnLine! -

URL: http://www.wsws.org/en/articles/2013/12/23/tech-d23.html

Obama pushes program to turn public schools over to corporations. "President Barack Obama made a well-publicized helicopter landing in New York City’s borough of Brooklyn October 25 to visit Pathways in Technology Early College High School, known as P-TECH. It is a public school where IBM has been placed in charge, and Obama used the appearance to promote a new expansion of government efforts to privatize public education..."

Topic(s): Geography: 

Democracy Now! 2014-01-02 Thursday

Democracy Now! Videos -

Democracy Now! 2014-01-02 Thursday
  • Headlines for January 02, 2014
  • Newly Elected Mayor Bill de Blasio: NYC Cannot Become the "Exclusive Domain of the One Percent"
  • Harry Belafonte Urges de Blasio to Fight Poverty, Stop-and-Frisk & "Dickensian Justice System"
  • Public Advocate Letitia James: Time to Tackle "Gilded Age of Inequality" in New York City
  • "We Will No Longer Stay Silent to This Classism": NYC Youth Poet Laureate Ramya Ramana
  • Exclusive: Dying Lawyer Lynne Stewart's Jubilant Return Home After Winning Compassionate Release

Download this show

DROPOUTJEEP: NSA's Secret program to access any Apple iPhone, including microphone & camera

The Hacker News -

In the era of Smartphones, Apple’s iPhone is the most popular device that exists, which itself gives the reason to target it. According to leaked documents shared by Security researcher Jacob Appelbaum, a secret NSA program code named DROPOUTJEEP has nearly total access to the Apple’s iPhones, which uses “modular mission applications to provide specific SIGINT functionality.”<!-- adsense -->While

Firmware vulnerability allows man-in-the-middle attack using SD Memory cards

The Hacker News -

How is it possible to exploit SD Card, USB stick and other mobile devices for hacking? Another interesting hack was presented at the Chaos Computer Congress (30C3), in Hamburg, Germany. The researchers demonstrated how it is possible to hack the microcontroller inside every SD and MicroSD flash cards that allow arbitrary code execution and can be used to perform a man in the middle attack. The

Skype's Official Twitter, Facebook and Blog Hacked by Syrian Electronic Army

The Hacker News -

Happy 2014.. We are back with first hacking story of the year - SKYPE "Stop Spying". Yes Skype Got hacked last night by an infamous hacker group called the Syrian Electronic Army, a group that supports Syria’s president and typically they publish pro-Syrian government messages, but its first time they are taking about PRIVACY.<!-- adsense -->Syrian Hackers posted bogus messages on Skype’s Twitter

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