/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
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 already has Python bindings that can be very
to the Raspberry Pi, then execute the LSUSB command on the Raspberry Pi, this time the list is connected to all the USB devices, as follows:
Bus 005 device 001:id 0000:0000
bus 001 device 001:id 0000:0000
bus 004 device 001:id 0000:0000
bus 003 Dev Ice 001:id 0000:0000
bus 002 device 006:id 15d9:0a37
Bus 002 Device 00
. 4 3 Make sudo Make InstallCreate a soft link. this way, you can start Python 3.4.1 by playing Python3.The first line removes existing soft links to Python 3.2.3.The second line creates the/usr/bin/python3 this soft link to the Python 3.4.1.The third line creates a soft link for the PIP. PIP has been officially integrated into the python3.4, and it is convenient to install the third-party module on the P
Tags: write ace use install data github size directory WhiteMethods for installing the official 32-bit system:1. Download the latest system image file from the official website and write to the TF card using the Raspberry Pi System recording tool. 2. Enable SSH connection: Create a new text file under the boot root of the burn and rename it to SSH3. Default user name and key: Username:pi,password:raspberry4
First, basic settings
1
sudo raspi-config
Move to the fifth "Enable Camera", enter, press the TAB key to switch to "enable" to confirm the return. Back to the main menu, tab to "Finish" to confirm the return. The Raspberry Pi will restart automatically.or execute a command to manually shut down the machine
1
sudo shutdown-h now
Warning!!!!!!!!!
Tags: nbsp Log volume down page Lin ext play CBO
Environment installationsudo apt-get install Python-pipsudo apt-get insyall python-dev mpg123sudo pip install Netease-musicbox
UseMusicBoxExit: "Q"NetEase Cloud Music > Help0. ' J ' down Move Down1. ' K ' Up Move Up2. ' H ' back3. ' L ' Forward forward4. ' U ' Prev page prev5. ' d ' next page next6. ' F ' search fast searching7. ' [' Prev song on a song8. ' Next song '9. ' Play/pause Play/Pause '
motion #counterlastuploaded =timestamp Motioncounter=0#Otherwise, the hostel is not occupied Else: Motioncounter=0#Check to see if the frames should is displayed to screen ifconf["Show_video"]: #Display the security feedCv2.imshow ("Security Feed", frame) key= Cv2.waitkey (1) 0xFF#if the ' Q ' key is pressed, break from the Lop ifKey = = Ord ("Q"): Break #clear the stream in preparation for the next frameRawcapture.truncate (0)Conf.json{ "Sh
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