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) {});});
Yes, just the three lines of code ...
1th, 2 line to all the buttons (button) bound a click of the event, the third line calls the jquery post method to send This.id (the ID of the clicked button), sent to "/cmd" This path, at this time, our Python code of the second route to work, Received the ID of the clicked button on the webpage, and printed out the "pressed button: XXX"
Of course, here are a few if statements to judge, you can follow the actual needs to do some real control, wel
First, the previous figure:
Accessories used:
1. Main Character: Raspberry Pi
2. secondary role: Infrared Detection
3. Miscellaneous: bread, DuPont wire, buzzer, led, resistor
The infrared detection has three pins. The power supply at both ends and the signal output in the middle directly connect the signal to a gpio of
Serial port is a computer on a very general device communication protocol, commonly used PC contains RS232 specifications of the serial port, with a few connections, simple communication, has been widely used.Linux access to all devices through the device file, the serial port is the same, in order to access the serial port, just open its device file can operate the serial device. Under the Linux system, each serial device has a device file associated with it, and the device file is located unde
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
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
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/
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
Title:raspberry PI Model B + (LCD display CPU temperature)--2015-01-29 17:44Bought a block connected to the raspberry PI Model B + LCD display, the above does not write CPU temperature, processing the next.Modified PCD8544_RPI.C:/*================================================================================= NAME:PCD8544_RPI.C Version : 0.1 Copyright (C) by An
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
Using OpenCV with the Raspberry Pi camera2015.11.21 created by HuangtaoRaspi-config"Camera" and select "Enable"Install Pi Camera:===================http://www.raspberrypi.org/archives/3890Test Pi Camera:===============RASPISTILL-T 10000Ok.Https://github.com/robidouille/robidouille/tree/master/raspicam_cv===============
In the previous article--Installing the ROS package on the Raspberry Pi, I joined openni2_camera and openni2_launch , if you follow my step by step, compile to a certain step, you will certainly encounter the compilation error, Haha, so I left a last article at the end of the sentence "How to predict the funeral , please listen to tell. "The package that needs to be installed in the previous article needs t
connect to the ssh Raspberry Pi ....
We switched to the windows platform and used Xshell to connect...
Step 1 update the system
Obtain the latest software list yum update, and then let you choose whether to download the update, y will do ....
Step 2: set static IP addresses (recommended)
Configure static IP addresses, routes, and DNS. We will use the ip command instead of the ifconfig command. Of course,
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
not long-term reliable, and once they feel no business interest, they can shut down any application or any product on the shelf at any time. In addition, the "Prism Door" event is also a big driver of the Cook's Arkos project, if the NSA can arbitrarily crawl data from Google, Microsoft, Facebook, AOL (US online), Twitter, users are tantamount to "naked" online, and who can believe. Apparently, Cook chose to believe in himself.However, Arkos has potential limitations, and most home internet ser
Environment: Raspbian-stretch (2018-06-27)Raspberry Pi: 3 generation B TypeOfficial website Installation Address: http://ozzmaker.com/virtual-keyboard-for-the-raspberry-pi/Home found the keyboard some keys have failed, no way, and windows, directly install a virtual key, is also flattered!Matchbox-keyboard is a "virtua
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