Saturday, April 22, 2017

Linux for Makers: Understanding the Operating System That Runs Raspberry Pi and Other Maker SBCs

Linux for Makers: Understanding the Operating System That Runs Raspberry Pi and Other Maker SBCs

Linux is a powerful open-source operating system that has been around for many years and is widely used for running servers and websites. But most students and Makers encounter it for the first time when they are working on projects with their Raspberry Pi or similar single-board computers (SBCs) such as BeagleBone Black or Intel Galileo. Linux for Makers is the first book that explains the Linux operating system specifically for Makers, as opposed to programmers and administrators. By gaining a deeper understanding of Linux, Makers can add another useful tool to their kit that will help them build their projects more easily.

Written with the Maker in mind, this book will focus mostly on Rasbian running on the Raspberry Pi as it is the most prolific in the ecosystem today. However most of the topics covered will apply broadly to other Linux distributions and will be called out when they may differ. Many times users cut and paste from a website tutorial into the Linux command line without understanding what they are actually doing only to be frustrated when they want to modify or tweak something to suit their needs. Also, many Makers shy away from using the Raspberry Pi or similar board because they feel Linux is too foreign and they think using a command line will be more difficult than using a GUI. This book aims to overcome those fears and provide a foundation for further learning and exploration. To that end, this book will focus on the basic principles that a Maker would need to know as opposed to other resources that go into detail that is not particularly relevant to building projects.

Thursday, April 20, 2017

Pair Raspberry Pi with Bluetooth keyboard.


The video show how to pair Bluetooth keyboard to Raspberry Pi 3 with Bluetooth (running Raspbian Jessie with Pixel rel. 2017-04-10).

Tested on Raspberry Pi Zero W, work also.


Wednesday, April 19, 2017

My new board: RASPBERRY PI ZERO W

My new board, Raspberry Pi Zero W, just arrived.









The Raspberry Pi Zero W extends the Pi Zero family. Launched at the end of February 2017, the Pi Zero W has all the functionality of the original Pi Zero but with added connectivity, consisting of:

  • 802.11 b/g/n wireless LAN
  • Bluetooth 4.1
  • Bluetooth Low Energy (BLE)

Like the Pi Zero, it also has:

  • 1GHz, single-core CPU
  • 512MB RAM
  • Mini HDMI and USB On-The-Go ports
  • Micro USB power
  • HAT-compatible 40-pin header
  • Composite video and reset headers
  • CSI camera connector

Product page: https://www.raspberrypi.org/products/pi-zero-w/





Related:
Pair with Bluetooth keyboard.

Tuesday, April 4, 2017

Build Supercomputers with Raspberry Pi 3

Build Supercomputers with Raspberry Pi 3

Key Features
  • Carlos R. Morrison from NASA will teach you to build a supercomputer with Raspberry Pi 3
  • Deepen your understanding of setting up host nodes, configuring networks, and automating mountable drives
  • Learn various math, physics, and engineering applications to solve complex problems
Book Description
Author Carlos R. Morrison (Staff Scientist, NASA) will empower the uninitiated reader to quickly assemble and operate a Pi3 supercomputer in the shortest possible time. The lifeblood of a supercomputer, the MPI code, is introduced early, and sample MPI code provides additional practice opportunities for you to test the effectiveness of your creation. You will learn how to configure various nodes and switches so that they can effectively communicate with each other. By the end of this book, you will have successfully built a supercomputer and the various applications related to it.

What you will learn
  • Understand the concept of the Message Passing Interface (MPI)
  • Understand node networking.
  • Configure nodes so that they can communicate with each other via the network switch
  • Build a Raspberry Pi3 supercomputer.
  • Test the supercluster
  • Use the supercomputer to calculate MPI p codes.
  • Learn various practical supercomputer applications
About the Author
Carlos R. Morrison was born in Kingston, Jamaica, West Indies. He received a B.S. (Hons) degree in physics with a mathematics minor in 1986 from Hofstra University, Hempstead, NY, and an M.S. degree in physics in 1989 from Polytechnic University, Brooklyn, NY.

In 1989, he joined the NASA Glen

Monday, March 27, 2017

ARM University Program launches Embedded Linux Education Kit

ARM University Program announced the launch of the ninth and latest Education Kit: the Embedded Linux Education Kit. This kit provides full courseware on developing embedded Linux products, including Linux kernel configuration and custom peripheral driver development, using low cost yet powerful ARM-based single-board computers.

The courseware is highly modular and includes a rich set of lecture slides with notes, as well as lab manuals with solutions. As with previous Education Kits from the ARM University Program, the courseware covers fundamental theoretical concepts coupled with a hands-on approach that includes real Linux implementations on an ARM Cortex-A9 based i.MX 6Solo SoC, which is available on the low cost UDOO NEO board.


source: https://community.arm.com/iot/embedded/b/embedded-blog/posts/arm-university-program-launches-embedded-linux-education-kit

UDOO NEO Board


Saturday, March 25, 2017

Raspberry Pi Image Processing Programming: Develop Real-Life Examples with Python, Pillow, and SciPy

Raspberry Pi Image Processing Programming: Develop Real-Life Examples with Python, Pillow, and SciPy

Write your own Digital Image Processing programs with the use of pillow, scipy.ndimage, and matplotlib in Python 3 with Raspberry Pi 3 as the hardware platform. This concise quick-start guide provides working code examples and exercises. Learn how to interface Raspberry Pi with various image sensors.

What You'll Learn

•Understand Raspberry Pi concepts and setup
•Understand digital image processing concepts
•Study pillow, the friendly PIL fork
•Explore scipy.ndimage and matplotlib
•Master use of the Pi camera and webcam

Who This Book Is For

Raspberry Pi and IoT enthusiasts, digital image processing enthusiasts, Python and Open Source enthusiasts and professionals

Tuesday, February 28, 2017

Internet of Things Programming with JavaScript

Learn the art of bringing the Internet of Things into your projects with the power of JavaScript

Internet of Things Programming with JavaScript

About This Book
  • This is a practical guide to help you configure and build a complete distributed IoT system from scratch using JavaScript
  • Utilize the power of Node and HTML5 to develop web services and a centralized web server, enabling high-level communication between connected devices
  • Control all your connected devices from the browser by setting up a common dashboard
Who This Book Is For
This book is for developers who are interested in learning how to communicate with connected devices in JavaScript to set up an IoT system. Some basic knowledge of JavaScript is expected. Hobbyists who want to explore the potential of IoT in JavaScript will also find this book useful.

What You Will Learn
  • Develop the skills to connected devices prepared the field to interact with the devices in a network system Internet of Things
  • Find out how to connect sensors and actuators to the devices
  • Send data to a web server connected devices
  • Understand Internet of things using web services and database
  • Configure a dashboard using HTML5 and JavaScript
  • Control devices connected from a dashboard
  • Monitor different devices from the dashboard
  • Build an app for a smartphone to control different devices
In Detail
The Internet of Things (IoT) is an entirely new platform for developers and engineers, but one thing that remains consistent as we move into this new world, are the programming languages. JavaScript is the most widely used language over the Internet, and with IoT gaining momentum, you will learn how to harness the power of JavaScript to interact with connected devices. This book will teach you how to interact with endpoint devices by developing web services in JavaScript and also set up an interface to control all connected devices.

This book begins with setting up a centralized web server that serves as a hub for all connected devices. The book then progresses further towards building web services to facilitate high-level communication between connected devices. Using Arduino and Raspberry Pi Zero as endpoint devices, the book will show you how devices can communicate with each other, perform a wide range of tasks, and also be controlled from a centralized location using JavaScript. The book ends with creating a hybrid app to control the devices that can be run from a browser or installed on a smartphone.

Style and approach
This book offers step-by-step guidance on how to set up a distributed IoT system using JavaScript.

It will teach you how to interact with endpoint devices by developing web services in JavaScript and also set up an interface for controlling all connected devices.

Monday, February 20, 2017

Custom Raspberry Pi Interfaces: Design and build hardware interfaces for the Raspberry Pi

Custom Raspberry Pi Interfaces: Design and build hardware interfaces for the Raspberry Pi

Design and build custom hardware interfaces for the Raspberry Pi and discover low cost display and sensor options for embedded system projects.

With this book you'll master 12C communications using Raspbian Linux in C++ and perform ADC and DAC experiments. You'll experiment with debounce buttons and switches using hardware and software solutions. Develop flywheel rotary encoder effects for ease of tuning and construct a hardware interface to the Music Playing Daemon (MPD) with developed software. Discover how to add your own hardware keypad for remote combination lock applications.

Custom Raspberry Pi Interfaces offers a thorough chapter on interfacing 5-volt systems to 3.3-volt Raspberry Pis designed to expand your choice of peripheral options. Ready to go C++ programs involving GPIO and I2C peripherals are provided. This book also explores ADC, DAC, rotary encoders, CMOS shift registers. I2C I/O extenders.

What you'll learn:
  • Build simple, low cost input/output interfaces including rotary encoders 
  • Interface with 5-volt devices from a 3-volt Raspberry Pi system 
  • Apply analog to digital and digital to analog conversions on the Pi 
  • Read potentiometers (volume control) from the Pi 
  • Determine step, directions, and velocity of a rotary encoder 
  • Perform remote interfacing using the I2 PCF8574 chip
  • Work with external CMOS devices like the 74HC595 (in C++)
Who this book is for:
Students and hobbyists interested in building custom interfaces for their Raspberry Pis.

Thursday, February 16, 2017

VNC Connect, a brand-new version of VNC

VNC Connect, a brand-new version of VNC that allows you not only to make direct connections within your own networks, but also to make secure cloud-brokered connections back to your computer from anywhere in the world, with no specialist networking knowledge needed.

The main change in VNC Connect is the ability to connect back to your Raspberry Pi from anywhere in the world, from a wide range of devices, without any complex port forwarding or IP addressing configuration. The cloud service brokers a secure, end-to-end encrypted connection back to your Pi, letting you take control simply and securely from wherever you happen to be.



A guest post at Raspberry Pi blog, GET ‘BACK TO MY PI’ FROM ANYWHERE WITH VNC CONNECT, Andy Clark, Engineering Manager at RealVNC, introduces VNC Connect: a brand-new, and free, version of VNC that makes it simple to connect securely to your Raspberry Pi from anywhere in the world.


Sunday, February 5, 2017

MotionEyeOS, A Video Surveillance OS For Single-board Computers

motionEyeOS is a Linux distribution that turns a single-board computer (include Raspberry Pi) into a video surveillance system.


To get started:
Check out the list of supported devices and download the OS image file that corresponds to your board.
Then follow the installation instructions to extract and write the image file to the SD card.

Thursday, February 2, 2017

Remote login Raspbian Jessie With Pixel using RealVNC Viewer from Windows

VNC Server is now built-in to Raspberry Pi running RASPBIAN JESSIE WITH PIXEL. Please note that xrdp conflicts with the RealVNC server, so you shouldn’t install both at once. This post show how to enable VNC Server on Raspberry Pi, download and run RealVNC View on Microsoft Windows 10 to remote login Raspberry Pi.

First of all enable VNC Server on Raspberry Pi:
- Open Raspberry Pi Configuration: Raspberry Pi Menu -> Preferences -> Raspberry Pi Configuration.
- Make sure VNC option is enabled.


You’ll see the VNC menu appear on the taskbar,


- Visit https://www.realvnc.com/download/viewer/ to download VNC Viewer, then run it.

This video show how:


Monday, January 16, 2017

Raspberry Pi 3 Compute Module 3 launched


Two versions of Compute Module 3 launched. The first is the ‘standard’ CM3 which has a BCM2837 processor at up to 1.2GHz with 1GByte RAM, the same as Pi3, and 4Gbytes of on-module eMMC flash. The second version, ‘Compute Module 3 Lite’ (CM3L),which still has the same BCM2837 and 1Gbyte of RAM, but brings the SD card interface to the Module pins so a user can wire this up to an eMMC or SD card of their choice.

Know more: https://www.raspberrypi.org/blog/compute-module-3-launch/