using gpio pins raspberry pi

Have done some works of the internet of things, because do not want to always do the app to control, because not everyone to download your own app, browser everyone is there, then everyone through the browser Web to access our server, it is not very simple and convenient, using Flask+python.Flask is a lightweight WEB application framework written in Python that is simple to use and easy to get started with.Install Flask:sudo apt-get install Python-pip

After buying the Raspberry Pi, what can I do with it? There are a few ideas to share with the beginner's teaching film, which is well worth a visit. Http://www.youtube.com/user/RaspberryPiBeginners 1.Plug in the expansion card, DIY or teaching.The main usage, of course, is to plug in a GPIO card, put on a noodle board, pull some electrical circuit, control what t

The DHT11 is a temperature and humidity sensor with calibrated digital signal output. Precision humidity +-5%RH, temperature +-2℃, range humidity 20-90%rh, temperature 0~50℃. I bought a good package of modules, the top with a pull-up resistor, directly to the Raspberry Pi can be gray, purple, blue respectively represents data, 3.3V, 0V, to the Raspberry

On-line tutorials, general Python with Rpi.gpio to control the Raspberry Pi Gpio, and C + + generally use WRINGPI library to operate Gpio,rpi.gpio too simple, many advanced features do not support, such as I2C/SPI library, etc., but also lack of high-precision timing and other advanced features. In contrast, WIRINGPI i

　　The GPIO pin has two modes board and BCM.1.GPIO output Control LED：　　Code:　　　　(1) Using board mode, GPIO.setmode(GPIO.BOARD) . Pin 35th is GPIO19 under BCM.(2) Set pin 35 to output mode,GPIO.setup(35,GPIO.OUT)(3) on the GPIO35 pin output high level, can also be Gpio.high2.GPIO interface for input signal：　　Circuit dia

-Expression-to-match-string-not-containing-a-word[Default:]--on-dup Ondup What does when the same file/folder exists in theDestination: ' Overwrite ', ' skip ', ' Prompt ' [default:Overwrite--no-symlink DON ' T follow symbol links when uploading/syncing up[Default:true]--disable-ssl-check DON ' T verify host SSL cerificate [Default:true]-C,--clean 1:clean settings (remove the token file) 2:cleanSettings and hash cache [default:0]Commands:Help Command-provide some information for the commandClean

Install boostsudo apt-get install Libboost1.50-allTest boost1.cpp#include boost::regex Re ("\\w+"); Boost::sregex_token_iterator I (Text.begin (), Text.end (), re, 0); Boost::sregex_token_iterator end; for (; I! = end; ++i) { std::cout Compileg++-std=c++0x-lstdc++-lboost_regex It.cppRun./a.outInstalling OPENCVApt-cache Search Opencvsudo apt-get Install Libopencv-devTest OpenCVThe webcam model I use is Logitech c2702.cpp#include Compileg++-std=c++0x-lstd

expose.NotesThis solution can take care of most restricted network environments, but some firewalls call deep packet checks on external traffic, and they often block out information that is transmitted in the same way as this article does. But I haven't tested it yet behind a firewall like this. At the same time, although I use a lot of cryptography-based tools (OPENVPN,HTTPS,SSH), I have not very rigorously audited this configuration scheme (LCTT: The author means that this package can help yo

follow this lesson, you need the following devices or software: Hardware section Raspberry Pi Adafruit Control Cable The logic level of this cable is 3.3V so it is safe, but not all kinds of cables are 3.3v! Only use the Adafruit control cable in this tutorial to avoid damaging the gpio pins on the small faction. So

install only qmake, useless (sudo apt-get install Qt4-qmake). Qt official website download that installation package can be large, how to do, because the use of Debian raspberry, search for a Debian Qt, find out if there is no source and the name of the installation package. Found the following address, Http://packages.debian.org/unstable/main/qt-sdk looked after a sudden cheerful, installed Libqt4-dev seems to be possible. Decisive sudo apt-get inst