how to use raspberry pi

Raspberry Pi advanced GPIO library, wiringpi2 for python Use note (3) GPIO operations, gpiowiringpi2 The core function of the GPIO library is to operate GPIO. GPIO is the "general input/output" interface, such as lighting up an LED or relay, or using iic spi 1-wire and other protocols, reading and writing data are all useful for GPIO. It can be said that without

Use a command line-based Web browser in Linux/Raspberry Pi This article will show you how to install three different text-based Web browsers on Raspberry Pi. Most Web browsers run a little hard on the small school, or consume a lot of resources, so an alternative solution i

Tags: raspberry Raspberry Pi filezilla SFTP File TransferSFTP (SSH File Transfer Protocol) is a network protocol that provides ssh-based file access, file transfer, and file management methods.With SFTP, you can easily modify, browse, and edit files on Raspberry Pi. SFTP is

Gpio Library core function, of course, is the operation of Gpio, Gpio is the "general input/Output" interface, such as lighting a LED, relays, or through the IIC SPI 1-wire and other protocols, read, write data, this is the use of Gpio, can say no gpio, Raspberry Pi can only be used as a small computer, with a gpio, it is upgraded to a controller. First of all, h

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

This blog will show you how to install three different text-based Web browsers on Raspberry Pi. The original article can be found here or at the bottom of this article. Most Web browsers run a little hard on the small school, or consume a lot of resources, so an alternative solution is to use a web browser based on command line. So far, text-based browsers have n

Build a Qt cross-compiling environment for Raspberry Pi 2B and Raspberry Pi 3 The lab project needs to use Qt to develop a user interaction interface on Raspberry Pi. Although

Use Raspberry Pi to build your own web server (I) install LAMP1. Adjust the GPU memory usage of pi as the web server, and do not need to output video signals. Therefore, reduce the GPU memory usage as much as possible to maximize pi performance. Sudo raspi-config select Adva

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 is rich in functionality, but in fact WRINGPI

The previous section describes how to write a Raspberry Pi system to the Raspberry Pi, and today we'll show you how to configure the Raspberry Pi for better use.If you have a monitor. Keyboard mouse, direct start can go to the des

First, sign up for a NOIP account .Refer to this tutorial: http://www.cnblogs.com/infopi/p/3991407.htmlCreate a DirectoryLine 1th enters the current user's home directoryLine 2nd establishes the Noip subdirectory, line 3rd enters the Noip subdirectoryCD ~mkdir NoipCD NoipDownload Noip client source, installThe 1th line to download the source code, the 2nd line decompression source code, 3rd line into the extracted source directory4th line compilation, line 5th installationwget http://www.no-ip.c

() - whileGpio.input (echo_pin): + Pass At2 =time.time () at return(T2-T1) *340/2 - - Try: - whileTrue: - Print 'distance:%0.2f M'%checkdist () -Time.sleep (3) in exceptKeyboardinterrupt: -Gpio.cleanup ()found that the catch of the exception is for Crtl+c trigger, before my several modules if the output of the CTRL + C or will continue to output, I can only write a script to close the output of the corresponding pin, with this abnormal capture, it is more convenie

You may have read my previous introduction to snappy Ubuntu. is not eager to get a snappy system to their own development Board AH. In this article today, we will show you how to assemble your own Raspberry Pi snappy Ubuntu system. Final version: We can buy the development version of the Raspberry Pi 2 generation

we have already used the official image to set up the Raspberry Pi development environment, it can be said to be able to use the application, but if the official kernel has some features that do not meet our needs or need to partially crop the kernel, then we need to crop the Raspberry

open source gather to do live:-) stream image no problem, but the voice, but also want to do. 9. Plug in the webcam will be all over the scene when the image stream to the Internet. can stream webcam to the Internet to share with the landscape or small animals. 10. The Thunder God's Hammer 3 on the Raspberry Pi to capture the source according to the following Web page modified and edited, about an hour c

Background: Previously seen in the big leaves of the blog there is talk can use Netselect find the fastest software source, just see today, I hereby write down, because I have been using the source of China University of Science and Technology, and found that it is not my fastest here. Attention: The following are only the Raspbian official sources (http://www.raspbian.org/RaspbianMirrors) Domestic source for speed measurement, need to test other sour

LSUSB viewing the USB cardSearch around wireless networks: sudo iwlist wlan0 scan/etc/network/interfaces configuration file pathChange the configuration file to the following file Note the SSID name and password are quoted!!! Auto LoIface Lo inet LoopbackIface eth0 inet DHCPAuto Wlan0Allow-hotplug Wlan0Iface Wlan0 inet DHCPWpa-ssid "Chenchen"Wpa-psk "123456789"Reboot and then we can connect.Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduce

Error using yum commandFile "/usr/bin/yum", line 30Except Keyboardinterrupt, E:^Syntaxerror:invalid syntaxThe problem is as follows:The problem occurs because:Yum package management is written using python2.x, and after upgrading python2.x to python3.x, the problem occurs due to Python version syntax compatibilityWorkaround:Modify the Yum configuration file to point the Python version to the previous old version# vi /usr/bin/yum#!/usr/bin/python2.7Modify the Urlgrabber-ext-down file to change th

Raspberry Pi-01-start, Raspberry Pi-01-start What is Raspberry Pi? You don't know? I went to Baidu, an interesting hardware. Online shopping of a batch of accessories, finally arrived, 16 gb sd card,

This article discusses how to install node. js on Raspberry Pi 3 bEnvironment description1. Raspberry Pi installed ' 2016-11-25-raspbian-jessie-lite ' (PS: In this version of the image, SSH is disabled by default, after the image is burned, create a new folder named ' SSH ' in the ' Boot ' partition, boot normally, Con