hardware involved : Raspberry Pi and related kits, LED traffic lightsknowledge : Circuit Test Board, CanakitWhen you're ready, we can start. Use Raspberry Pi for LED prototype control.The first thing to understand is that access to all of the wires, resistors, and the lights that come with the kit need to be handled wi
Raspberry Pi When used alone, often need touch screen and soft keyboard for easy operation, micro-snow LCD display can better realize this function,Just as the lab buys a 3 b board and a 5inch monitor, it installs the official installation manual once.One: Material preparation
Raspberry Pi Official image, I am
cursor.At the prompt type the following command:After the identifier, enter the following command:passwd PiYou'll then is prompted for a new password. Enter it carefully and press the [Return] key. It'll now ask retype the password.You will be prompted to enter a new password, please enter it carefully and hit enter. You will be prompted to confirm your password againThe password has been changed.So the code is modified.Now type the following command
configured by the board support Code, but the intention was to
Eventually reach that goal.
On Raspberry Pi, Device Tree usage is controlled from/boot/config.txt. By
Default, the Raspberry Pi kernel boots with device tree enabled. You can
Completely disable DT us
of QEMU.
4. Create a new bat batch file in the QEMU installation root directory and enter the following command.
Qemu-system-arm.exe-m versatilepb-cpu arm1176-hda 2017-04-10-raspbian-jessie.img -kernel kernel-qemu-m 256- Append "Root=/dev/sda2"
Note that in bold, you need to replace the image file name of the Raspberry Pi system you downloaded.
Run this bat batch file, you can successfully simulate, simple
Design and Development of Micro-meteorological stations based on Raspberry Pi (Windows 10 IoT Core) and iotcore
Preface
Raspberry Pi (RPi) is designed specifically for Students' Computer Programming education. Only credit card-sized card-type computers can run Linux or Windows 10 IoT Core operating systems. This articl
Then insert a dual line on the gpio4 pin of Raspberry Pi as the antenna.
UseIfconfigCommand to view your IP address and open it in the browser:Http: // Raspberry Pi IP: 8000/You can view the songs being played, and then you can add the songs you want to listen.
Turn on the radio, adjustFM 1, 98.5Channel, you can
software package is ready and can be released;
Iii. Cross-compiling source code
1. Environment
Ubuntu
2. Install Raspberry Pi cross compiling tool
Step1. download Raspberry Pi cross compiler tool https://github.com/raspberrypi/tools
Step 2: place the source
Cross-compiled Raspberry Pi 2 kernel in CentOS
Cross-compilation toolchain in CentOS 6.6 x64 requires glibc-2.14 support (x86 is not needed), so first install the glibc-2.14
Install the relevant compilation tools before installation. Here I will install the entire group directly.
Yum groupinstall "Development tools"-y
Download the glibc-2.14 source code, compile,
[Raspberry Pi] USB wireless network card automatically connected
When the Raspberry Pi uses a USB wireless network card, it will not be dropped because the route is restarted.
#! /Bin/bashWhile true; doIf ifconfig wlan0 | grep-q "inet addr:"; thenSleep 60ElseEcho "Network connection down! Attempting reconnection ."Ifup
Raspberry Pi can do a lot of interesting things, it is equivalent to a small computer, installed on the system can be used as a small server home.
With this small server, you can implement an "offline" Download machine. But offline download here is not really offline, because the Raspberry Pi is still online-since the
, the host! = Build when the compilation is cross-compilation. If no designation will run ' config.guess ' to detect;>>--prefix: installation directory; >>--help: view parameters;>>--target: This parameter is special, indicating the target platform name that needs to be processed, primarily in the context of program language tools such as compilers and assembler, if no value is specified using host. Generally used to compile tools, such as to the arm Development Board to compile a can handle the
Environment: Raspberry Pi, System Raspbian, System comes with two versions of Python and Pygame.1. ArtboardsThe procedure is as follows:1! /home/pi/game_1.py2 ImportPygame3 4width = 6405Height = 4806RADIUS = 1007Fill = 18 9Pygame.init ()#Initialize PygameTen Onewindow =Pygame.display.set_mode ((window, height)) AWindow.fill (Pygame. Color (255, 255, 255))#fill t
a UI since the Raspberry Pi have HDMI built in.Finally, here's turning on a LED from C # (with comments and defensive code).Using Windows.Devices.Gpio;Private void Initgpio(){ VarGpio= Gpiocontroller.Getdefault(); Show An error if there is no GPIO controller If (Gpio== Null) {Pin= Null; Gpiostatus.Text = "There is no GPIO controller on this device."; Return; }Pi
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 efficiency is indeed high, but it took a lot of
0 PrefaceThis article describes how to control the Raspberry Pi gpio port through the file IO sysfs. Control gpio through sysfs, first access the/sys/class/gpio directory, write the gpio number to the export file, so that the operation interface of this gpio is exposed from the kernel space to the user space, gpio operation interfaces include ction and value. Direction controls the gpio direction, while val
tts_main(filename, words):
token = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
text = urllib.parse.quote(words)
uuid = "xxxx"
resp = baidu_tts_by_post(text, uuid, token)
f = open("test.mp3", "wb")
f.write(resp)
f.close()
After obtaining the audio file, you can use the mpg123 player to play the video.
Mpg123 test.pdf
Integration
Finally, combine the three parts.
You can first integrate python-related code into main. py, as shown below:
who says you can't play the Raspberry Pi graphical interface without a monitor. Don't forget Vncserver Oh! VNC (Virtual network Computing) is a networked display system, which means that it can transfer the complete form interface over the network to a single Computer screen, the implementation of a graphical interface to operate, view the remote computer. VNC is divided into Vncserver (VNC Server) and vncc
= Urllib.parse.quote (words)
UUID = "xxxx"
RESP = baidu_tts_by_post (text, uuid, token)
f = open ("Test.mp3", "WB")
F.write (RESP)
F.close ()
After you get the audio file, you can play it using the mpg123 player.
mpg123 Test.mp3
Integration
Finally, put together these three parts.
You can first integrate Python-related code into main.py, as follows:
Import ASR
Import TTS
Import Robot
Wor
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.