http://wangye.org/blog/archives/845/Recently began to toss up Raspberry Pi came, because somewhere in the internet need Ruijie dialing, so I would like to be able to let my Raspberry Pi do, of course, first of all to transform it into a router, the default comes with the network as a WAN port, we also lack a network po
Raspberry Pi Raspbian and raspberry raspbianRaspberry Pi Raspbian recorded the process of installing Raspberry Pi for the first time and implementing Intranet penetration through peanut shells.
5. Connect to
Raspberry Pi-Sonic Pi (sound programming), sonicpi
Sonic Pi is an open-source programming environment designed to explore and teach programming concepts by creating sound production music processes.
The Code executed by Sonic Pi is based on Ruby, which is a beautiful and con
header file:
#include
Define timer pointer, claim slot function update ():
Private:
Qtimer *timer;
Private slots:
void update ();
Dialog.cppAdd the following code to the constructor:
Timer = new Qtimer (this);
Connect (timer, SIGNAL (), this, SLOT (update ()));
Timer->start (3000);
The first line initializes the timer pointer, the second line is the timer's time drain signal and the update () slot function connection, the third line is the start timer. According to the description
Vamei Source: Http://www.cnblogs.com/vamei prohibited any form of reprint.The Raspberry Pi is an ultra-small computer with a credit card size, developed by the Raspberry Pi Foundation of the Rotten Country (UK). Thanks to its ultra-small size, Raspberry
supports basic use, which can cause Raspberry Pi to restart if more power is needed. # #可选的 -Ethernet network cable (Model B or + +)-An Ethernet network cable allows your pi to connect to a local network or the Internet.-USB Wireless Card-You can use a USB wireless card to connect to the wireless network but need to be configured.-Audio equipment-Audio can be pl
快至少5倍以上, 100 seconds to get it done!There is no axel in the system, you need to download the installation by yourself.2. InstallationDownloaded after the file is arduino-1.8.2-linuxarm.tar.xz, need to decompress, the specific steps are as follows:Cd/home/pi/downloads # Go to the file download directoryxz-d arduino-1.8.2-linuxarm.tar.xz #解压得到文件: Arduino-1.8.2-linuxarm.tar, this command takes 30 seconds, you need to wait a momentTAR-XVF Arduino-1.8.2-li
Raspbian based on Debian, official recommendation
OPENELEC/RASPBMC Multimedia Center
Arch
Risc OS
3.SSH Client
Putty,for PC
Serverauditor,for IPad
Irssi connectbot,for Android Phone
Third, System installation
Download image, recommended Raspbian
Use the card reader to plug the TF card into the PC and burn the image to the TF card with Win32diskimager
Insert the card reader into t
the installation is OK4 using cross-compilation to build an executable fileFor a single simple source file, a binary file can be generated by invoking the cross-compilation tool directly with the instruction, and for complex multi-source files It is necessary to write makefile and then make instructions to compileHere, compile hellowd.c with the command line to generate an executable file for the Raspberry Pi
This assumes that you already have the Raspberry Pi 2/b+, and that it is already installed. If not, I suggest you buy one, they are both cheap and fun.
Personally, I'd rather spend a little more money buying from Canakit. Their logistics quickly and reliably, plus their ready-to-go service is also very good.
Okay, let's start OpenCV and Python installation.Step 0:
We assume that you have opened
The Raspberry Pi is an arm-based micro-computer motherboard that has only a credit card size and is also known as a new card-type computer, and the Raspberry Pi has all the basic functions of a computer, which is perfectly formed. and its development organization Raspberry
command to install the Python library, Pip. If you use Python3, the command can use PIP3 sudo pip install robotframwork #安装脚本引擎核心库 sudo pip install robotframework-ride #安装测脚本的IDE软件 sudo Pip Install robotframework-selenium2library #安装selenium2library库sudo pip install selenium==2.53.6 # Special Note: install the specified version of the Selenium library, if the installation of more than 3.x version, the execution of the script will be abno
sleep 0.5 play 62 sleep 0.5 play 64 sleep 0.5 play 60 sleep 0.5end
You can enter frere to call this method later. For example, call in a loop:
4.times do frereend
6. Synths (synthesizer)
The synthesizer enables the play method to make different sound effects. The default synthesizer is "pretty_bell", but you can change it by yourself:
"pretty_bell""dull_bell""beep""saw_beep""fm"
Try different synthesizer:
with_synth "fm"2.times do play 60 sleep 0.5 play 62 sleep 0.5end
7. threads
:).-----------------------------to spit out the installation experience-----------------------------------------------------Today, there is a project to do a self-running measurement system, thinking about how to implement automatic measurement when not connected to the PC. The previous day has been the Python GUI, so think of the idle raspberry Pi, perhaps with an HDMI monitor can be used. Friday, while pl
, signal pin, and one pin dangling. Connect the Raspberry Pi and module as follows: After checking out the code from GitHub, enter it in the Raspberry Pi terminal lxterminal:CD "Grove–ultrasonic Ranger"sudo python ultrasonic.pyThe Raspberry
I learned the Linux system with a magic Raspberry Pi board.Raspberry Pi is an ARM-based micro-computer motherboard With a shape of only the size of a credit card. Therefore, it is also known as a new card-type computer. Raspberry Pi has all the basic functions of the compute
distance of the obstacle. The Grove-ultrasonic Ranger has four pins, namely power supply, ground, signal pin, and one pin dangling. Connect the Raspberry Pi and module as follows: After checking out the code from GitHub, enter it in the Raspberry Pi terminal lxterminal:CD "Grove–ultrasonic Ranger"sudo python ultrason
This book is divided into 18 chapters, the first 3 chapters are the basic chapters of the book, the main introduction of the Raspberry Pi some basic conditions and basic operations, to let readers understand the past life of Raspberry Pi, master the basic use of
Use Raspberry Pi to build your own web server (I) install LAMP and raspberry lamp1. Adjust pi GPU memoryOccupiedSize
As a web server, you do not need to output video signals. Therefore, reduce GPU memory usage to maximize pi performance.
1 sudo raspi-config
Select Advan
If the device is not received, after using VNC login, the display resolution is very small, should be 480p, resulting in a very inconvenient use.By modifying the/boot/config.txt file, the desktop can also be displayed at a set resolution when the monitor is not connected. Here's how:1. Open Config.txt FileMethod One: Use the SD card reader to open the Config.txt file in the boot folder in the Windows environmentMethod Two: After entering the raspberry
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