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Archive for September, 2014

Charging a dead Nexus 7

September 30th, 2014 No comments

I have a nexus 7 tablet that had been “dead” a few times.  Each time it gets into the dead mode, the back light flash about once per second when I was trying to power it on.  When charging, the charge icon will not come on, and the tablet can not be powered on even after days of charging.

It appears lots of people ran into similar problems and have various fixes described on the web. One is fixing the loose battery connector.  It did not work for my tablet.  Only the following approach fixed my Nexus 7:

1.  Plug-in your dead N7 to a wall charger. (Jump immediately to step 2.)
2.  Immediately after plugging it in, press Volume Down and Power at the same time.

*This should get you into the bootloader menu. You may have to try this with different chargers or test out the timing in order to get it to work.

3.  Once in the bootloader menu, use Volume Down until you see “Power Off Device.”
4.  Choose that option with the Power button.
5.  Once your device is off, unplug the charger and then plug it back into the device.
6.  You should now see the battery meter (pictured above) with your device returning to life.

Credit: http://www.droid-life.com/2012/12/27/fix-nexus-7-refusing-to-charge-try-this-trick/

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Arduino Widely Used in AT&T Car and Home Hackathon

September 15th, 2014 No comments

Last week AT&T’s "Code for Car and Home" hackathon took place at the Cosmopolitan in Las Vegas where over 200 developers, 47 teams, 41 sponsors, and over 300 in total attended. At the hackathon, developers built apps that focused on connected vehicle and home automation. One of our two top winning teams focused on an app to help with distracted driving, phone calls while driving, etc.  Another winner focused on home safety, monitoring and reacting to high levels of carbon monoxide. In total, over $100,000 in prizes were awarded to winning teams.  I was there observing the hackathon and Arduino was widely used in the hackathon projects for sensing and automation.

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Python is the Most Popular Introductory Programming Language at Top US Universities

September 15th, 2014 No comments

Python has surpassed Java and is currently the most popular language for teaching introductory computer science courses at top-ranked U.S. departments. More specifically, eight of the top 10 CS departments (80%), and 27 of the top 39 (69%), teach Python in introductory CS0 or CS1 courses, according to a recent survey posted by ACM  [1]

Python possesses a mix of qualities that makes it a good candidate for universities. It has a simpler syntax than Java or C++, allowing novices to start writing programs almost immediately. At the same time, it can be scaled up for heavy industrial usage — it is widely used in the financial community for data analysis, for instance.

Note this rating is different from what is in the industry. According to TIOBE Programming community index, C and Java are still the top 2 languages on-demand.   However, Top Universities choice of language for their introductory course do influence job market language popularity in the future.

 

[1] http://cacm.acm.org/blogs/blog-cacm/176450-python-is-now-the-most-popular-introductory-teaching-language-at-top-us-universities/fulltext

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