how to build raspberry pi cluster

What you need to know before installing1. Coolpy is a Nodejs-based IoT platform (official website http://icoolpy.com). Note: The domestic IoT platform has the LEGO network , Yeelink and so on, but only coolpy is open-source. 2. Node. JS is a platform built on the chrome JavaScript runtime to easily build fast, easy-to-scale Web applications Note: Therefore, to run coolpy, you must first install the Nodejs. 3. The new coolpy does not use a database bu

, the host! = Build when the compilation is cross-compilation. If no designation will run ' config.guess ' to detect;>>--prefix: installation directory; >>--help: view parameters;>>--target: This parameter is special, indicating the target platform name that needs to be processed, primarily in the context of program language tools such as compilers and assembler, if no value is specified using host. Generally used to compile tools, such as to the arm

first, the simplest method on the Raspberry Pi is to use apt-get and then give control to the Openhab user.sudo apt-get install openhab-addon-binding--hr Openhab:openhab/usr/share/openhabNext, you need to tell Openhab to load the binding and configure all the required variables. go to the configuration folder, copy a copy of Openhab-default.cfg, and name it openhab.cfg. Open the file, search for hue, and r

to the server) app, via my host SSHConnect Raspberry Pi II, andgiven the effectiveness, the Raspberrypi interface on Raspberry Pi II has not been used, so it can only be developed under the console, so it has to be re-picked up by the Emacs IDE. To tell the truth, do more than 12 years of various technology applicatio

CentOS 7 ARM Release: Support Raspberry Pi 2/Banana pie/cubietruckKaranbir Singh from the CentOS team is pleased to announce that CentOS 7 Linux for the ARM hardware architecture has been officially released. In addition to Twitter's brief announcement, it did not comment on the official website about the new features and optimizations of the ported version. However, based on the image name, we know that it

library of the aboveRASPICAMTEST:A Small test app which uses the static library. Execute with./raspicamtest. Press ESC to exit.Using the Static LibraryADD the Include path-i$ (HOME)/GIT/ROBIDOUILLE/RASPICAM_CVLink with the RASPICAMCV library-l$ (HOME)/GIT/ROBIDOUILLE/RASPICAM_CV-LRASPICAMCVLink with the Userland libraries:-l$ (HOME)/git/raspberrypi/userland/build/lib-lmmal_core-lmmal-l Mmal_util-lvcos-lbcm_hostIn your code add #include "RaspiCamCV.h"

Google has finally released its Fuchsia/magenta kernel of the Raspberry Pi version, the following describes how to compile and run Ready to work, first need to have an HDMI screen, I'm here is the 800x480 HDMI screen, then the keyboard Download Magenta code from Google src or github Https://fuchsia.googlesource.com/magenta In the running directory Scripts/download-toolchain Download the tools needed, I am h

ObjectiveInstalling Java 8 on a Raspberry Pi is similar to this one, but the Raspberry Pi does not support adding Webupd8team sources automatically with add-apt-repository, so add them manually.StepsCreate a new webupd8team-java.list in/etc/apt/sources.list.d, add a sourcesudo vim.tiny /etc/apt/sources.list.d/webupd8te

developers need to build an art-level graphical user interface. QT is easy to scale and allows for real component programming. Basically, Qt is the same type of thing as the MOTIF,OPENWIN,GTK on the X Window and the Mfc,owl,vcl,atl on the Windows platform.To put it simply, QT can write programs that are easily ported to other platforms, basically recompiling the program.install qt on Raspberry PiInstall us

/opt/ros/indigo Common errors: The compilation process compiles more than 180 package and installs it in the/opt/ros/indigo directory, often reporting ' collada_parser ', ' collada_urdf ', ' Rviz ', ' Visualization_ Tutorials ', ' rqt_robot_plugins/rqt_rviz ' these packets are faulty and the installation is interrupted. The solution is to remove the packages from the directory ~/ROS_CATKIN_WS/SRC directory and recompile the entire Ros. Finally, a separate workspace is created and the packages a

package for the release. It generates a file with a name similar to "package-version.tar.gz" in the current directory. Package and version are the Am_init_automake (package, version) that we define in configure.in;>>make Distcheck: Generate and test the release package to determine the correctness of the release package. This action will automatically unpack the package file, then execute the Configure command, and do make to confirm that the compilation does not appear error, and finally promp

"0x00"One day I was about to practice writing HTML5, but did not want to make computer files too confusing, so on the Raspberry Pi set up a server, ready to build a small website to practice practiced hand.After the configuration, wrote a point HTML5 added a bit of JavaScript, and later switched power after the boot does not. Before it was a bit unstable, initial

Ubuntu Raspberry Pi 2b cross compiling environment, ubuntu2b Generate executable code on another platform. Why is cross-compilation costly? One sentence: The last thing is. Sometimes it is because the target platform does not allow or cannot install the required compiler, and some features of the compiler are required. Sometimes it is because the resources on the target platform are poor, it is impossible t

-zenheiWill install Wenquanyi Zen Hei open-source Chinese font, here to Wenquanyi Zen Hei salute, it seems that it is the only open source Chinese font library. Guo Jia had the money to build a Confucius Institute, but never had the money to do a more complete open source Chinese font.Chinese can be displayed, input it? Linux has long been, called SCIM (Smart Common input Method), so just enter:sudo apt-get install Scim-pinyinwill be installed pinyin

;;EsacExit0The /etc/init.d/myscript is not yet randomly activated. Linux on boot, the real check is the/ETC/RCN.D folder, execute the script therein. The n here represents the RunLevel. For example, at run Level 2 o'clock, Linux checks the/ETC/RC2.D folder and executes its scripts. UNIX systems can work in different operating modes, such as single-user mode, multiuser mode, and each mode is called a runlevel. Most UNIX systems follow:Operating level: 0 shutdown, shut down 1 single user,

is the default toolchain; The *.O file is generated by the *.c file with the same name.Then enter make in the console to generate the executable file.Send me a compiled executable file for Raspberry Pi:Scp-r ~/catkin_ws/src/beginner_tutorials/src/hello-world [Email Protected]:/home/ubuntu"SSH login Execution" after landing into the directory where the executable file, modify the execution permissions of the file.sudo chmod 755 hello-world./hello-worl

be on the Pi and not remotely a Ccessing it.I added a gcc toolchainOptions > Build Run > Tab tool Chain > button addChoose GCC Then set compiler path:/usr/bin/arm-linux-gnueabihf-gcc-4.6 Debugger:/usr/bin/gdb Mkspec:default Qt Creator seems to detect, we is going to deploy on a remote target.To fix this: Go to menu Help > About plugins Uncheck Device Support > Remote Lin

Cross-compiled raspberry pi 2 kernel in CentOS, centosraspberry Cross-compilation toolchain in centos 6.6 x64 requires glibc-2.14 support (x86 is not needed), so first install the glibc-2.14 Install the relevant compilation tools before installation. Here I will install the entire group directly. yum groupinstall "Development tools" -y Download the glibc-2.14 source code, compile, install wget http://ftp.gn

Install Qt in Raspberry Pi Blog link:Http://blog.csdn.net/jdh99, Author: jdh, reprinted please note. Environment: HOST: win7 Hardware: Raspberry Pi Steps: Reference: http://qt-project.org/wiki/apt-get_Qt4_on_the_Raspberry_Pi firstly I got the development tools needed by QT creator

How to enable I2C device http://www.cnblogs.com/hangxin1940/archive/2013/04/02/2997077.html and build a python I2C Development Environment http://www.cnblogs.com/hangxin1940/archive/2013/04/03/2997094.html Quick2wire is a python library used for I2C communication on Raspberry Pi. It allows non-root users to read and write gpio pins conveniently. Why use it? Some