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FirstSome time ago, took a little time to do the number of children learning problems of the small programHomeDo a problem interface (topics are randomly generated every time, subtraction)To record a problem.Now the question is coming, how can we know at any time whether the homework is finished?It's too hard to refresh every time you open the title record page.So I made a Raspberry Pi + small LED light equ
() - 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
Javame embedded 3.3 released, supporting Raspberry Pi Author: chszs, reprinted with note. Blog homepage: http://blog.csdn.net/chszs Oracle recently released two javame versions: First, javame embedded 3.3 for Raspberry Pi (Ea version );The second is javame SDK 3.3 (EA ). Developers can now develop rich javame app
) # Numbers GPIOs by physical Locationgpio.setup (IN1, GPIO. Out) # Set Pin ' s mode is Outputgpio.setup (IN2, GPIO. Out) GPIO. Setup (IN3, GPIO. Out) Gpio.setup (IN4, GPIO. def loop (): While True:print "Backward ..." backward (0.003, up to) # Steps---anglep
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//Downlo
foreign data and Git source code, determine the technical solution, write experimental codeHardware integration, first realize wfly remote control, all equipment to complete the installation, for 2 night to complete, first can play upPython control code written on PI, 3 nightsAndroid App Authoring 2 nightsI have some experience in the hardware of the model, but the main ability in software programming, I h
Use Raspberry Pi to implement chatbotsI recently used Raspberry Pi to implement a robot that can talk to people. I will give a brief introduction.Raspberry Pi is the world's most popular micro-computer motherboard. It is a leading product of open-source hardware. It is desig
The problem is the Web server built on the Raspberry Pi, want to control the Raspberry Pi Gpio through the Web page, the webpage is implemented by PHP, through the PHP exec function call write good program implementation of the GPIO
This is a creation in Article, where the information may have evolved or changed. This program achieves LED blink in Raspberry Pi with Go lang.//This is the implemented with Hard-coding and uses only main Function.package mainimport ("FMT" "OS" "Time") Func main () {//Initialize GPIO25 FMT . Println ("Initialize GPIO25") fd, ERR: = OS. OpenFile ("/sys/class/gpio/
similar to this articleThe article does not write much, in order to avoid the later people wandering around and neglected to write the time of the article, these special Plus is June 28, 2014, the province is not on some software version number (some of the "latest"The argument is correspondingly this time). Suppose the forward time can add my old gu link is better:)or in 2008-2010 years, compared to the powder Emacs, and then spent a lot of time on top, pro
it here."2" Installation Wiringpi, previously mentioned, check the Gpio pin assignment after installation. The PIN diagram is as follows:"3" according to the figure line, TXD is 8 feet connected to the MAX232 Rx Rxd on the TX, the TTL level to RS232 level so that the computer can recognize.Writing code in "4" Eclipse#include intMainvoid){ intFD; if(FD = Serialopen ("/dev/ttyama0",9600)) 0) {printf ("Serial err\n"); } while(1) {uartbuff[0]=Seri
Raspberry Pi native Serial port default for console output, if you want to use in your own program need to shut down the system to occupy this serial port. The method is configured for Rasp-config, or directly modifies the/boot/cmdline.txt #dwc_otg. lpm_enable=0 console=tty1 console=serial0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 elevator= Deadline Fsck.repair=yes Rootwai Dwc_otg.lpm_enable=0 console=tty
Look at build 2015 in the middle of the night, basically heard 3, 4 times "Raspberry Pi", but always did not demonstrate win10 in the RPI above what kind of, so ... Try it yourself. First the pit is DISM: see an Ffu file, read the instructions, that is DISM directly deployed to the SD card. So is it possible to use LINUX+DD? Try it, no ... Then using win8.1 for DISM, found error 87, go back to look at the
logic. Yesterday my wife read the Rpi.gpio document, one hours and dozens of lines of code can be achieved by the Raspberry Pi car through the infrared detector tracking operation. It's something that no other language can do or that's hard to do. Video stamp here: Raspberry Pi Infrared Tracking trolley Python is the
similar to this articleThe article does not write much, in order to avoid later people wandering around and neglected to write the time of the article, these special Plus is June 28, 2014, the province is not on the software version (some of the "latest"and that's the time to say it.). If the forwarding time can add my old gu link is better:)or in 2008-2010 years, compared to the powder Emacs, and then spent a lot of time on the above, programming eff
Ubuntu Raspberry Pi 2b cross compiling environment, ubuntu2b Generate executable code on another platform. Why is cross-compilation costly? One sentence: The last thing is. Sometimes it is because the target platform does not allow or cannot install the required compiler, and some features of the compiler are required. Sometimes it is because the resources on the target platform are poor, it is impossible t
Go is a programming language developed by Google that is statically strong-typed, compiled, and styled, and has a garbage collection function. To facilitate search and identification, it is sometimes referred to as GolangRecord how to install locales on Raspberry PiFirst step: Download the installation packageHTTPS://golang.org/dl/Here we are going to install in Raspber
and is easily downloaded and modified by the reader.The following books will not be introduced, share the graphic coverHere is still to recommend my own built Python development Learning Group: 725479218, the group is the development of Python, if you are learning Python, small series welcome you to join, everyone is the software Development Party, not regularly share dry goods (only Python software development-related), Including a copy of my own. 2018 Latest Python Advanced materials and high
The Raspberry Pi file directory is a must-have basic knowledge. Understand the distribution of files within the system. Structure of the Directory The role of the directory Reference Blog/bin Binary executable command /dev device special files /etc system administration and configuration Files /etc/rc.d Startup configuration files and scripts /home base point of user home director
MQ-7 Carbon Monoxide Sensor Module IntroductionBrief description:First, size:32mm x22mm x27mm length x width x HeightSecond, the main chip:LM393,MQ-7 gas sensorThree, the operating voltage: DC 5 VoltsFour, Characteristics:1, with signal output indication. 2. Dual signal output (analog output and TTL level output)3,theTTL Output valid signal is low level. (When the output low signal light, can be directly connected to single-chip microcomputer)4, the analog output 0~5v voltage, the higher the con
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