Raspberry Pi 3+ros Kinetic version
Remote PC +ros Indigo version
First turn on the Raspberry Pi camera function
sudo raspi-config
Start Camera function
and restart the Raspberry Pi.
Open the Raspberry Pi Official drive node on GitHub
Https://github.com/UbiquityRobotics/raspicam_node
Do the following steps
Enter the source directory of the workspace
$CD ~/CATKIN_WS/SRC
Copy the driver package
$git Clone Https://github.com/UbiquityRobotics/raspicam_
The Raspberry Pi has just installed the Ubuntu Mate system, opening the home folder and discovering that there is not enough spaceThis is not an extended store to the entire SD card, but the Raspi-config command in Ubuntu Mate is not yet available.There's a way here.After you enter sudo fdisk/dev/mmcblk0,Enter D 2 n P 2 (key on keyboard) and press two times enter (enter)Then press W to exit and restartThen open the terminal inputsudo resize2fs/dev/mmc
write: vim/etc/wpa_supplicant/wpa_supplicant.conf>network={ssid= "WiFi name"psk= "WiFi Password"}
7. Keyboard layout Configuration?? Since Raspberry origin is British, so the keyboard layout is an English keyboard, many keys are different, so you need to change the keyboard layout, first perform the following two actions:
You can replace the keyboard layout by first installing the Input method configuration:>APT Install FCITX
Then enter:>
/ Arm-2011.03-42-arm-none-eabi-i686-pc-linux-gnu.tar.bz2tar XJVF arm-2011.03-42-arm-none-eabi-i686-pc-linux-gnu.tar.bz23, download, unzip, for the kernel to hit the ARMV6 support patchwget HTTP://WWW.KERNEL.ORG/PUB/LINUX/KERNEL/V3.0/LINUX-3.0.4.TAR.BZ2TAR-XVF Linux-3.0.4.tar.bz2wget/http Thoronir.net/raspi-dev/linux-arm.patchpatch-p1-d linux-3.0.4/4. Set Kernel compilation optionsInstall ncurses Firstsudo apt-get install Libncurses5-devCD linux-3.0.4m
1, what is the raspberry pie.
Raspberry Pi (Chinese named "Raspberry Pie", abbreviated as RPi, or RASPI/RPI) is designed for students ' computer programming education, and only card-type computers with credit cards size are based on Linux.
The raspberry pie was developed by the Raspberry Pi Foundation, a charitable organization registered in the UK, Eben upton/Es Upton is the project leader. March 2012, the University of Cambridge Eben Apton (Eben
1. DMESG//Show recent events in Raspberry Pi
2. cat/var/log/syslog//Print Log
3, Raspberry Pi has a lightweight x11--lxde, can be set by Raspi-config automatic login LXDE
4, if you like to use the graphical interface installation program, you can install the package: synaptic
sudo apt-get-y install synaptic//Download the installer
sudo synaptic//execution Program
5, Raspberry Pi default program development software: Python. The Raspbian system i
Label: /************************************************************************* * RPi 2B apache2 MySQL php5 a
nd vsftp * Statement: * This article mainly records the RPI 2B how to install Apache2, MySQL, php5, vsftp server, and test it for follow-up work, which encountered the problem of insufficient SD card space. * 2016-2-19 Shenzhen Nanshan Ping Shan village Zengjianfeng ********************************************************** **************/First, reference article:1. Apache Server (PHP
1. How to associate Mvbox virtual camera head in Chat room
1 Enter the chat room, click on the right side of the chat room button, select the audio and video settings, the following figure:
2 in the Audio and video window of the video device select "Virtual Cam", you can realize in the chat room associated Mvbox virtual camera, it is convenient to use the painting, palette, filter and pull, special effects and other functions to beautify you
Open Flash CS3 and create a new Flash file (Script 2.0). Named Pagea.fla
First step: Create a video component in the library, type selection: Video (subject to ActionScript control). Press F11 to open the library panel, the right key blank place a pop-up menu, choose "New Video", any name.
Step two: Drag the video symbol to the scene and resize it to the size you want. and named "Camera". At the same time, place two button on the layer, named "Btncamera" and "Btnupload" respectively.
Step three:
correct can run a little test on the Unix machine by logging in as You normally does and type in ' Dbaccess/usr/roads/road ' where '/usr/roads ' is the directory name and ' road ' is the database Name. This should the "Start up" dbaccess and connect to the database. Any error messages should is noted and please ring CJN technologies with them. If you are still has problems then it may be the permission ' s of your home directory or it ' s parent directories. It is important this directory in yo
Then we set the camera ten units to the right, and units up and ten units back.
public class Basic3dtest implements Applicationlistener {public
perspectivecamera cam;
@Override public
Void Create () {
cam = new Perspectivecamera (Gdx.graphics.getWidth (), Gdx.graphics.getHeight ());
Cam.position.set (10f, 10f, 10f);//x right positive y upward for positive z want to be positive
I. Overview
Review the video surveillance market, the monitoring platform system used by the signaling control protocol is not unified, resulting in the interconnection of the technical threshold. This is a bit similar to the 80 's China's switch market eight system of the situation. These reasons hinder the network era of large-scale carrier-level video surveillance, remote access, centralized management needs. The industry has explored two ways to solve the problem:
From the monitoring industr
there is a problem with the main route), they will be set up as blocking mode.The malicious hacker exploits the STP to launch a denial of service (DoS) attack. If a malicious hacker connects a computer to more than one switch and then sends a well-designed BPDU with a low bridge ID, it can deceive the switch so that it thinks it is a root network bridge, which causes STP to converge (Reconverge), causing the loop to cause the network to crash.Mac table Flood attackThe switch works by recording
(for example, if there is a problem with the main route), they will be set up as blocking mode.
The malicious hacker exploits the STP to launch a denial of service (DoS) attack. If a malicious hacker connects a computer to more than one switch and then sends a well-designed BPDU with a low bridge ID, it can deceive the switch so that it thinks it is a root network bridge, which causes STP to converge (Reconverge), causing the loop to cause the network to crash.
MAC Table Flood Attack
The swi
by the motherboard according to the computer instruction to produce the control signal.
When the press Enter/Exit key or the printer receives a print command from the computer, paper motor in accordance with the design of the direction of rotation, through the transmission of power transmission to the rubbing paper wheel and cam to make its rotation, cam rotation so that the cardboard in the spring tensio
input
sudo raspi-config
Copy CodeThen select Change_locale, and select ZH_CN in the default locale for the system environment:. UTF-8, after the configuration is complete, enter the command
sudo reboot
Copy CodeRestart complete can be connected to the VNC after the use of Chinese display and Chinese input method, switch Chinese input method is the same ctrl+space5. Q: How do I install Google's Open source browser Chromium
unhandled event object from the message queue and enables further processing of the event. The next step is to extend the Pygame_1 program to draw different circles by capturing mouse events, the closer the edge of the window is, the greater the radius of the circle.The program looks like this :The result diagram is beautiful:5. Play SoundTips: Here, the Raspberry Pi screen appears at the top right of a color block when the power supply is not enough, it is recommended to intercept the USB por
on the wireless network card, and then the system image is brushed into the SD card, we connect the display keyboard and mouse to initialize the configuration work, of course, no conditions recommend the direct use of SSH connection Raspberry Pi, this is more convenient, because the new system by default open SSH management.The connection information is mainly as follows:Host Name: Raspberrypi user name: Pi secret Code: RaspberryIf you are connecting directly to the Raspberry Pi via SSH, the f
1 Image Recognition
Rospberry Pi B + was finally delivered by snail mail this afternoon. B + is mainly to add 2 USB, added gpio, SD card changed to micro SD... Let's not talk about it directly. I have been looking forward to it for a long time.
Full Version
Samsung package (B + DDR2 + GPU) + lan9514 (Network PHY + Mac + 4 * USB controller)Broadcom bcm2835 700 MHz arm1176jzfs with FPU processor and 4-core GPU Processor
HDMI output + display + camera interface
Mesh (10/100 m) + 4 * USB +3.5
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