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Getting Started With BeagleBone (英語) ペーパーバック – 2013/10/21
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Many people think of Linux as a computer operating system, running on users' desktops and powering servers. But Linux can also be found inside many consumer electronics devices. Whether they're the brains of a cell phone, cable box, or exercise bike, embedded Linux systems blur the distinction between computer and device. Many makers love microcontroller platforms such as Arduino, but as the complexity increases in their projects, they need more power for applications, such as computer vision. The BeagleBone is an embedded Linux board for makers. It's got built-in networking, many inputs and outputs, and a fast processor to handle demanding tasks. This book introduces you to both the original BeagleBone and the new BeagleBone Black and gets you started with projects that take advantage of the board's processing power and its ability to interface with the outside world.
Matt Richardson is a Brooklyn-based creative technologist and video producer. He's a contributor to MAKE magazine and Makezine.com. Matt is also the owner of Awesome Button Studios, a technology consultancy. Highlights from his work include the Descriptive Camera, a camera which outputs a text description of a scene instead of a photo. He also created The Enough Already, a DIY celebrity-silencing device. Matt's work has garnered attention from The New York Times, Wired, New York Magazine and has also been featured at The Nevada Museum of Art and at the Santorini Bienniele. He is currently a Master's candidate at New York University's Interactive Telecommunications Program.
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Linux platform is well equipped to the point even bash shell scripting can be used to do a decent hardware hacking control. I believe targeted audience is a weekend hacker and not serious C/C++ programmer. If that is a case, this books serves its target audience well.
There is only one thing that really bothers me.
Following a tradition of Raspberry Pi and Arduino , the first physical demonstration of the board is made on how to turn LED on.
Matt tells us to use 100 ohm resistor in series of LED. the GPIO pin is set up to source the current. With 3.3V output and 100 ohm resistor with LED Vf of about 1.8V, the resulting current will be around 15mA. This is OK for LED that is usually rated for 20 mA but appears to be way over the spec'ed source current of 4mA for this TI SOC. The setup does work (I did try it) and did not destroy my beaglebone but this is probably because the TI chip's design margin and not the GPIOs intended usage. Therefore I would not follow this if I were to use more than a single LED in the same fashion. Adafruit.com's tutorial (written by Simon Monk) recommends the use of 470 ohm resistor instead and warns against the use of lesser value resistor because "it could burn your beaglebone". Derek Molloy's youtube video even shows the set up where GPIO output is buffered by a small signal transistor to turn LED on. Needless to say, I am most comfortable with Derek's solution.
Other than this concern, the book succeeds in showing around the Beaglebone's vast playing ground. I liked the book for covering the broad spectrum of methods to enjoy this board in a relatively small number of pages.
If you want to get off to good start with open source devices buy the BeagleBone Black and get a copy of this book.
Mr. Richardson certainly includes a full description of all one needs to get started with the Beaglebone include hardware gozinta's, software setup and use of the IDE as well as Python interfaces; but he also goes well beyond other getting started books in this compact 127 page edition. Projects include a networked outlet timer, use of Python and Bonescript and the Linux Shell to control the board and interfaces, and use of the Xively Internet of Things service (formerly known as COSM or Pachube).
I highly recommend this Getting Started++ guide to the powerful and extensible Beaglebone architecture to both those new to Linux embedded systems and hardware enthusiasts.
--Ira Laefsky MS Engineering/MBA IT & HCI Consultant & Researcher
formerly on the Senior Consulting Staff of Arthur D. Little, Inc. and Digital Equipment Corporation
I am not so novice (engineer that worked with Unix and Linux for years), but I still learned things I did not know.
But what's really great, is that it's fast... in very little time you can get started with linux, ssh, turn on LED's, Python scripts etc...
Withing 4 hours you learned all you need to get your internet controlled project started. I highly recommended it for the beginner, but also for the intermediate user.
Not to be fooled: this book is not a complete user manual, it just scratches the surface of all the potential of this Beablebone, but it's super fast to do, and touches many aspects of it (GPIO, PWM, Analog I/O, ethernet, python, JS, HDMI, cron, Cloud IDE).
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