how to make raspberry pi supercomputer

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

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

.? 1 $ pip Install NumPy Take: Raspberry Pi B +: less than 45 minutes Raspberry Pi 2: Less than 15 minutesStep 9: Download and decompression OpenCV:? 1 2 3 $ wget-o opencv-2.4. 10.zip http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.4. 10/opencv-2.4. 10.zip/dow

In the use and development of Raspberry Pi, you may often need some hardware and sensors to support your development work, for example, add an ultrasonic ranging module to allow your Raspberry Pi to have ranging function, add a temperature measurement module to achieve temperature measurement function. Today we have pr

This article is based on the purchase of a East USB wireless network card (Rtl8188cus chip) to make wireless hotspot. Originally wanted to make a one-click script. Just record the implementation process first. ReferencesTurn Your Raspberry Pi into a WiFi Hotspot with Edimax Nano USB Ew-7811un (Rtl8188cus chips

-gnueabihf-Raspberry Pi Cross compiler toolchain address Https://github.com/raspberrypi/toolsRaspberry Pi Cross-compiling can refer to the Linux host on the implementation of Raspberry Pi cross-compiling and file transfer, remote loginBefore subsequent operation, source this

From SSH to port forwarding, these advanced technologies will make your Raspberry Pi development easier. When you can enter a command in the command line, you are no longer a beginner in some new settings. Although the progress is not fast, you are indeed learning how to use a computer with a credit card size to satisfy some DIY ideas. This is

Enable Raspberry Pi camera without Raspi-config ask: HiI have installed the latest Ubuntu Mate on my Raspberry Pi2. I wanted to use the Raspberry Pi camera in this operating system. Although I installed the ' Picamera ' driver in it, the system can not be create the camera

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

ext.: http://bbs.xiaomi.cn/thread-7797152-1-1.html In the use and development of Raspberry Pi, you may often need some hardware and sensors to support your development work, for example, add an ultrasonic ranging module to allow your Raspberry Pi to have ranging function, add

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 Raspberry

. Click Add event Select a title for your time. We recommend that you do not add any spaces to the event name. I am using "DoorAlert" You need to add at least one tracker. This is basically a variable used in push notifications. I name it "message" Finally, enter the message content you want to push. My Python code sends the variable {message} to the Instapush service. Therefore, I suggest you only add {message} to the Message field. Click Add event Click the Basic Info tab and write down th

/.help/debian.html).Edit the/etc/apt/sources.list file and add the following entry at the top of the file (please make a backup before the operation)Deb http://Mirrors.163.com/debian/wheezy main Non-free contribDeb http://mirrors.163.com/debian/wheezy-updates main Non-free contribDeb http://mirrors.163.com/debian/wheezy-backports main Non-free contribDEB-SRC http://Mirrors.163.com/debian/wheezy main Non-free contribDEB-SRC http://mirrors.163.com/debia