Raspberry pi 2 dedicated server


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Haga clic en Centro de Iot en la lista de la derecha. Click Iot Hub from the list on the right. You see the first screen for creating an IoT hub. Rellene los campos. Fill in the fields. Select the subscription to use for your IoT hub. Grupo de recursos: Resource Group: You can create a new resource group or use an existing one. Para crear uno, haga clic en Create new Crear y escriba el nombre que quiere usar. To create a new one, click Create new and fill in the name you want to use.

Para usar un grupo de recursos existente, haga clic en Use existing Usar existente y seleccione el grupo de recursos de la lista desplegable. To use an existing resource group, click Use existing and select the resource group from the dropdown list. For more information, see Manage Azure Resource Manager resource groups. This is the region in which you want your hub to be located. Select the location closest to you from the dropdown list. Nombre de la instancia de IoT Hub: IoT Hub Name: Put in the name for your IoT Hub.

This name must be globally unique. If the name you enter is available, a green check mark appears. The IoT hub will be publicly discoverable as a DNS endpoint, so make sure to avoid any sensitive information while naming it. Haga clic en Siguiente: Size and scale Siguiente: Click Next: Size and scale to continue creating your IoT hub. Plan de tarifa y escala: Pricing and scale tier: You can choose from several tiers depending on how many features you want and how many messages you send through your solution per day.

The free tier is intended for testing and evaluation. Permite la conexión de dispositivos con el centro de IoT y hasta mensajes al día. It allows devices to be connected to the IoT hub and up to 8, messages per day. Cada suscripción a Azure puede crear una instancia de IoT Hub en el nivel gratis. Each Azure subscription can create one IoT Hub in the free tier.

Unidades de IoT Hub: IoT Hub units: The number of messages allowed per unit per day depends on your hub's pricing tier. Por ejemplo, si desea que el Centro de IoT admita la entrada de mensajes, elija dos unidades del nivel de S1. For example, if you want the IoT hub to support ingress of , messages, you choose two S1 tier units. For details about the other tier options, see Choosing the right IoT Hub tier. This property relates the device-to-cloud messages to the number of simultaneous readers of the messages. La mayoría de los centros de IoT solo necesitan cuatro particiones.

Most IoT hubs only need four partitions. You see something similar to this screen. Haga clic en Create Crear para crear el centro de IoT. Click Create to create your new IoT hub. Esta operación tarda unos minutos. Creating the hub takes a few minutes. Una vez creado el centro, puede recuperar la cadena de conexión del centro. After your hub has been created, retrieve the connection string for the hub. Se utiliza para conectar dispositivos y aplicaciones al centro. This is used to connect devices and applications to your hub.

Haga clic en el centro para ver el panel de IoT Hub con la configuración y otros elementos. Click on your hub to see the IoT Hub pane with Settings, and so on. Haga clic en Directivas de acceso compartido. Click Shared access policies. En Directivas de acceso compartido , seleccione la directiva iothubowner.

In Shared access policies , select the iothubowner policy. En Claves de acceso compartido , copie Cadena de conexión: Under Shared access keys , copy the Connection string -- primary key to be used later. For more information, see Access control in the "IoT Hub developer guide. In this section, you create a device identity in the identity registry in your IoT hub. No se puede conectar un dispositivo a IoT Hub a menos que tenga una entrada en el registro de identidades.

A device cannot connect to IoT hub unless it has an entry in the identity registry. Proporcione un nombre para el nuevo dispositivo, como myDeviceId y seleccione guardar. Provide a name for your new device, such as myDeviceId , and select Save. Esta acción crea una nueva identidad de dispositivo para su instancia de IoT Hub. This action creates a new device identity for your IoT hub.

The device ID may be visible in the logs collected for customer support and troubleshooting, so make sure to avoid any sensitive information while naming it. After the device is created, open the device from the list in the IoT devices pane. Copie el valor de Cadena de conexión: Copy the Connection stringprimary key to use later. El registro de identidades de IoT Hub solo almacena identidades de dispositivos para permitir el acceso seguro al centro de IoT.

Almacena las claves y los identificadores de dispositivo para usarlos como credenciales de seguridad, y un indicador de habilitado o deshabilitado que permite deshabilitar el acceso a un dispositivo individual.

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Si la aplicación necesita almacenar otros metadatos específicos del dispositivo, debe usar un almacén específico de la aplicación. If your application needs to store other device-specific metadata, it should use an application-specific store. Leaning means some of the power that would be applied as lift is now redirected as horizontal acceleration Luckily the accelerometer is also used and the result combined produces accurate values over time.


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The accelerometer reads the force of gravity distribution across its X, Y and Z axes. When the quad is horizontal, its output in the X, Y and Z axes should be 0, 0, Luckily the remaining PIDs are based upon mathematical guesstimation — and if you get it wrong nothing really bad happens. For outside testing the - - tc parameter is not used. Instead - f is used to signify a preprogrammed flight pattern: Find yourself a flat strong platform on which your quadcopter can stand.

Place your platform on the floor. With a spirit level in both X and Y axes, get the platform as horizontal as you can by propping up the corners. Now sit the quadcopter on the platform. Then enter: You should see the corrective values required by the accelerometer so it reads 0, 0, 1 , when it is horizontal. First tuning is for the vertical velocity PID; for take-off, hover and landing. I added another 50 as the vertical velocity PID I gain.

However it is worth mentioning it in passing for completeness. In the same way the accelerometer gives innaccurate readings without tuning, so too does the gyro. The net result of this is the quadcopter believes it is rotating on its axes even though it is not. Gyro calibration happens as the first thing when the quadcopter code starts up while it is sitting still on the ground. It should follow the predefined flight plan as described. Hammering it hard in a blind panic will bring the quadcopter crashing to the ground — been there, done that, too many times.

That means if you want to change a flight pattern, you need to change the code. Search for the Interpreter: Currently, this code is set up to climb for 5 seconds at 0. By all means tinker with the timings and vertical velocity targets and see what effect they have. Next the absolute angle PID — again I used the same gut feel plus guesswork algorithm. Again this value worked fine so I left it at that. Check yours by taking off from the ground the horizontal take-off platform is no longer needed by entering:.

You need to set up your quadcopter as a wireless access point WAP. I won't explain the details of this here but just make you aware of the requirement. Check out my blog entry at http: You should see the same flight pattern, even if the ground is uneven or sloping. I suggest looking in the Raspberry Pi Forum or joining http: Finally, the horizontal velocity. This PID takes a target of the desired speed, puts out a target acceleration which is then converted to a desired tilt angle by dividing the output by gravity g 9.

So if we wanted to accelerate at 1 g horizontally, then the quadcopter would tilt at 45 o. Seems like a good gut-feel starting point. This PID is there to prevent drift in windy conditions — the quadcopter should hover above the take-off point regardless of wind. But wet winter weather, combined with crashes in testing, are preventing me from completing this test.

Stick with ——hvp 0. A really good battery can still only power a flight for under 1 0 minutes. Start all flights and testing with a full battery and keep in mind how long your testing has been going on. Do some research, prebuilt options exist. There are so many reasons. Luckily with each flight comes a set of diagnostic data saved as a. This is a generic spreadsheet format which Microsoft Excel and LibreOffice can understand, allowing you to diagnose the problem.

Have a look in my blog http: In the previous article, in Issue 1 9 of The MagPi, a Java example was given that demonstrated how to collect and log data from an I 2C air pressure sensor. One convenient way to visualise and analyse the data is to use the JavaScript Google Charts library to produce a web page. Depending on the need these charts may be accessed locally, stored on the Raspberry Pi and accessed remotely, or stored and accessed remotely.

Creating chart data files In the DataChannel class, a scheduled task is started to periodically average the real-time data collected. This produces several different time scale files in comma separated value format CSV. Files containing the real time hour, day, month and year summaries are stored on the Raspberry Pi SD card. Uploading the files Often a Raspberry Pi is running on a home network, behind a router that runs network address translation NAT. This is helpful for keeping the Raspberry Pi away from the web, but is problematic if the data recorded on the Raspberry Pi needs to be viewed directly.

One solution is to upload the files from the Raspberry Pi to your favourite web server using file transfer protocol FTP.

Apache provides a Java library that includes functions and classes for FTP file uploading. This library can be downloaded from http: FTPRepl y. To import a. This library can be found at https: JavaScript can be used to make charts on the HTML web pages and these can be made to show different time scales. Then convert this data to a Google Charts data table: DataTabl e ; data. Finally a chart object can be created: ComboChart document. For more information look at the source code at https: An example implementation can be found at: Outlook You can follow the story and evolution of the system via my blog page.

I have now added wireless temperature probes, and other sensors are planed: For a chance to take part in this month's competition visit: Winners will be notified in the next issue and by email. Good luck! December's Winner! We will be emailing you soon with details of how to claim your prizes!

I was trekking to a downstairs closet to manually power-cycle my cable modem once or twice a day and the modem was getting old. So after upgrading the cable modem, replacing all of my interior cabling, connectors and terminations and eliminating all but one professional grade splitter with no reduction in modem flaps, I had two options. One was to call my cable provider and ask them to evaluate the integrity of all of the fiber-optic cable, copper wiring, connectors and terminations between the cable head end and my residence. It seemed prudent to choose the latter. What I needed to do was automatically check my internet connection every 1 0 minutes.

Then, if no internet connection was detected, power cycle my cable modem off for 1 5 seconds, then back on and wait 4 minutes for the modem to. Then 1 0 minutes later the process would repeat. When I got internet back I wanted an email log of the outage time and length sent to me. I also wanted a soft, pleasing audio tone to sound when the modem power cycled to counteract the frustration I felt each time there was another modem flap. Raspberry Pi solution I chose the Raspberry Pi as the platform because of its size and flexibility. My programming skills are, alas, not up to the task of writing the scripts for this project so I asked for the help of a fellow southern Californian, Efrain Olivares, who has been coding for many years during his career in systems management and networking.

We programmed the Raspberry Pi with a Python script to detect loss of internet connectivity. The script is executed at configurable intervals using the cron job scheduler contained in the Linux. Cron may be configured to run scripts and many other functions at specific times, dates and intervals. We chose every 1 0 minutes to check for internet connectivity. When internet connectivity is lost, a GPIO pin responds by triggering two relays, one to switch off power to the cable modem and the other to sound a piezo audio alarm, both for 1 5 seconds.

After power is restored to the modem there is a 4 minute delay for it to re-connect to the cable plant and then the Raspberry Pi checks for internet availability again. If we have internet then the script ends. If not, the script executes twice more before giving up. Thanks to cron, the OS calls the script again, 1 0 minutes after the previous call.

Both the script and cron function cycle at their programmed intervals until the internet connection is again detected. The Python script is available for download. There are no labels on the board and two different pin naming schemes.

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Here we use GPIO header pin 1 1 for our output signal and pin 6 as ground. I found that the female connectors on wire prototype jumpers serve as good push on connectors for the GPIO pins. A powered USB hub is a good source of 5V power for both the relay board and the alarm. For safety reasons be sure to switch only the 1 2V supply to the modem, not the AC mains power supplying the brick or wall transformer. A hardware block diagram is shown in Fig.

Building instructions There are many excellent online and print sources for initializing your Raspberry Pi board. Test your Raspberry Pi internet connection by pinging a known web site using the pi ng command. If there is no response, type i fconfi g on the command line to see if you are connected to your DHCP router and confirm that it has assigned an IP address to your Raspberry Pi.

If not connected then check the physical. When you do establish an internet connection, upgrade and update the Raspberry Pi OS. From the command line type, sudo apt- get i nstal l upgrade sudo apt- get update. Make a habit of updating each time you import new software into your Raspberry Pi.

Download the Python script for the project from Github http: From this directory type: Next, unplug your network connection and run the script again. Reattach the cable and run the script once more. The success message should reappear. Breadboard prototype wires with female connectors fit the pins on both boards. Connect GPIO pin 6 to the input ground on the relay board. Strip and tin each wire and insert the ends into the screw terminals on relay 1.

If you want a 1 5 second audio alarm to sound when power is removed from the modem, then cut a length of USB cable with the Type A USB connector still attached to one end. The red and black wires in the cable connect to the positive and negative pins on the USB connector. Strip and tin the wire ends. Cut and secure the other two conductors.

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Connect the red wire from your piezo alarm to the centre terminal of relay 2 and the positive wire from the USB cable to the normally open relay contact. Connect the black piezo ground wire to the black USB wire. Now, when GPIO pin 1 1 is energised, both relays trip. The contacts on relay 1 open, removing 1 2V power to the cable modem and those on 2 close, sending 5V to the piezo buzzer.

Finally, we must provide power to the relay board itself. Connect the red and black wires of another. I found that a standard hobby servo motor female connector works well on the relay board power pins. Clip and remove the centre conductor at the plug and splice the two outer conductors to the USB cable, observing correct polarity and connect.

Add your own email address and perhaps a different title. If you like, consult the annotated script and change the duration of the modem shutdown default is 1 5 seconds and the delay in rechecking the connection default is seconds. You may also want to change the cron script to call the Python script at a different interval default is 1 0 minutes. Another idea is to place an extra Raspberry Pi with an audio alarm and a blinking LED on your desktop as a remote modem flap alarm. You can use it for a data hub, mini web server, or anything else the Raspberry Pi can do and it should still work to mitigate your problem with modem flap.

Have fun with this practical use of the Raspberry Pi. By the way, yes I am going to send a copy of this to my cable provider! As noted by many authors, the Adafruit website, amongst many retailers, provides Raspberry Pi boards as well as excellent tutorials for installing the Raspberry Pi OS and configuring the software: The female prototype connectors are available online at Amazon as are three conductor servo connectors also available at RC airplane and vehicle hobby sites.

NanoXion's Raspberry Pi colocation service NanoXion is a start-up company that was inspired by the French saying "We don't have oil, but we have ideas", to provide Raspberry Pis in a professional hosting environment. The company decided to take up the challenge of using Raspberry Pis as dedicated servers. The company is a dynamic team of two talented individuals who are passionate about IT technology.

NanoXion specialises in hosting solutions. The company provides all kinds of high availability professional hosting solutions, server administration, maintenance and server housing service in a datacenter. Raspberry Pi hosting solution More and more companies are seeking flexible and highly advanced methods to efficiently manage their IT infrastructure.

However, common hosting solutions are often not well matched to the required demands of a client, especially for small businesses. The development of IT technologies should include an environmentally friendly approach. The current trend of IT technology development is.

IT management must now either fully participate in a "green" approach or risk becoming a weak link in the ecoresponsibility chain of a company. This solution follows sustainable development principles, thanks to the low power consumption of the Raspberry Pi. We want to stimulate digital development, by offering everyone a secure environment to develop and implement groundbreaking software in this digital world.

We also believe that these compact and energy efficient devices can play a very interesting role in a professional hosting environment. We think that a Raspberry Pi colocation service is a great choice for running specific applications and to stimulate or improve digital development, for which a "powered-up" server is not necessary. Some technical features Currently, NanoXion is the only company in France that provides a Raspberry Pi colocation service directly for consumers. In fact, consumers do not need to send their own Raspberry Pi because we can provide preconfigured Raspberry Pis ready for use.

The Raspberry Pi provides multipurpose solutions in our own server infrastructure, such as managing, task automation and monitoring. The performance of the Raspberry Pi is great. It is environmentally friendly thanks to low power consumption, has a very compact size and performs very well for several specific applications. It works and rocks! There is a lot of enthusiasm around the Raspberry Pi, which can impact society itself. A lot of communities use Raspberry Pis to develop and implement cool stuff. For four months, we have been setting up a complete and rackable solution to equip our rack-mount servers with Raspberry Pis and others compact products.

This includes unlimited traffic, ability to reboot 24x7 through our manager software, native IPv6 and pre-installation of Raspberry Pi servers. I can tell you that we have made an unprecedented number of sketches, cutting, drilling and assembling steps for this! We have developed our own monitoring tools that are not based on proprietary solutions. These tools are written in PHP, Shell,. WLanguage and other web technologies. The whole process of running Raspberry Pis in our computer racks is controlled by our own manager codenamed "Infinity".

Power supplies have been resized to accommodate our racks. We have completely redesigned our rack infrastructure to save time and improve flexibility. Each rack has two sensors: The temperature sensors are present to make sure that the rack is functioning properly and to provide warnings of emerging risks. We offer our customers a control panel to manage their Raspberry Pis. This panel includes graphs of bandwidth, power management and SSH access. We provide dedicated solutions based on server-oriented Raspbian Debian Wheezy distributions, specifically optimised for hosting solutions.

We provide a high quality service, thanks to our secure datacenter that has an uptime of Our secure and reliable professional hosting environment ensures our NX-BOX service has guaranteed quality of service and security. The entire architecture has been redesigned to achieve the best possible performance. The IPv6 protocol was developed in anticipation of this shortage, caused by an exponential increase of internet connected devices often called the "Internet of Things".

Unfortunately, not all operators and manufacturers have followed recommended standards. Therefore, many of the world's users will not be ready for a full transition to IPv6 for some time. Coming soon Our Raspberry Pi colocation service is scheduled to be fully functional at the beginning of February 4. More information can be found at http: Then this section of The MagPi is for you!

We aim to list Raspberry Jam events in your area, providing you with a Raspberry Pi calendar for the month ahead. Are you in charge of running a Raspberry Pi event? Want to publicise it? Email us at: Saturday 8th February 4, 1 0.


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Malvern Raspberry Jam When: Tuesday 1 1 th February 4, 2. Raspberry Jam Silicon Valley When: Third Saturday of every month, 1. Will feature demonstrations of application software suitable for science, technology, enginerering and maths education. Thursday 28th February to March 1 st March see web for times Where: Saturday 1 st March 4, 1 0. Programming and using simple electronics: I replied that I write computer programs which give the computer some tasks. I didn't have to wait long for the second question. How does a program work?

That was when I decided to write Algoid to teach him what computer programming is and how to do it. Originally Algoid was designed to run on the Android platform but recently I discovered the Raspberry Pi; this low cost, credit card sized computer exactly designed for education. What is AlgoIDE? AlgoIDE is a combination of an integrated development environment IDE and its own language AL designed together to simplify the understanding of programming! Principles The AL language was developed with three ideas in mind: Try to explain to a kid how the "for" loop works.

You will discover you need to explain variables, conditions, boolean expressions and incrementation Algoid's syntax was designed to be as easy to memorise as possible.

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All its structure statements are written the same way variables, functions, arrays, objects After having understood how imperative statements and procedures work, I was limited to them. To progress I had to learn another language and another syntax. All things considered, AlgoIDE tries to simplify programming and its understanding. My first idea was to create a step by step execution mode. With two clicks the execution slows down and highlights appear in the source code on the line being executed.

This is possible with the debugging mode. We will see later how it works. AlgoIDE also has the ability to view the variables in use on its scope viewer and has its own logger. It is also available on the Google Play store at https: Finally it is also available for Java at http: Install it on your Raspberry Pi and launch it from the Desktop. From the Exampl es menu, choose demo.

Click on the "Play" button and the demo script will run. The program contains a function named pol y and a loop that draws a rose window. Note that the function declaration is really special: This will add a new breakpoint. Click on the "Play" button to run the program.

Three new buttons appear - run to the next breakpoint, run to the next line and run to the next token. The Algoid debugger considers each token as an object path and expression calculation. This is perfect to understand the precedence order for example. Try each of the three new buttons. You can observe the current variables and their values in the Scope Viewer window. Observe the value of i t and si ze in the Scope Viewer with each iteration. In AL everything is an expression.

Example declarations are: Now you can understand where the program is at and what it is doing. The number at the right of the check box allows you to change the step by step speed. Now uncheck step by step mode and check the "Debug mode" box. Click on the number 12 in the. Documentation To learn a language and how to program, the most important thing is documentation and sharing experiences. The http: The tutorials. Algoid gives teachers the ability to write their own learning plugins. A tutorial and an article explaining how to do that is already available.

Writing a plugin in Algoid is very simple. The teacher just needs to have some basic Java and Swing development knowledge. Plugin development is divided in two steps: Algoid is also a community federated by the forum http: It contains a lot of discussions, problem solutions and mini-tutorials. A complete range of tools are available to interact with the AL language. The tutorial provides a complete Java NetBeans project starter and documentation.

This is an example of the library development:. Another way to learn programming is with other people! Some members have created a team to develop games on Algoid. When programs are interesting they are included in the next application release. Everyone can learn from one another. Everything in the Algoid environment is based on sharing source code and knowledge.

Algoid is also designed for teachers. As Algoid is a free tool, all help is greatly appreciated for tutorial writing, documentation corrections, etc. With this feature a lot of improvements can be added to Algoid, like GPIO communications, a true 2D game engine planned for future development , mathematical functions, etc.

Everything you want to teach or command can be added with this powerful scripting language! One principle of Algoid is to be fun, because when it is fun, learning becomes a pleasure. What is more fun than creating your own game? The game above contains only lines of source code and this include all the graphics and animated stars. Tutorials In this simple tutorial, we will see how to animate a spaceship.

Then features such as typing, stamps and events will be discussed. The first steps of the program are to hide the turtle, create a spaceship and draw it. An object is defined in the same way as a number or a string. Objects, functions and arrays are all declared using the same expression syntax: Then to define members of an object, all you need to do is to define another expression within the object: In AL, objects are directly created with their declaration.

An object can be used imediatelly after it is created. If some more objects of the same class are needed, it is possible to clone the initial object.

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The next concept to introduce is a stamp. A stamp works by cloning creating a new instance of an. The syntax begins with set: A stamp contains two pieces of information: In AL, an array is declared using the array keyword. This example represents a tree. It demonstrates how simple it is to define data structures in AL. Numbers can be replaced by a function, or objects and array of functions, etc. Imagine the capabilities of this kind of flexibility. Now the image needs to be drawn on the screen. There are two steps to draw a stamp: If we draw the stamp again in another position, then AL will draw an additional ship.

This will create two stamps on the screen. To create an animation, we will limit the number of simultaneous stamps on the screen. The object can now be animated with an event: AL is a complete functional language. Functions can be passed as parameters and returned as results. Events are based on a callback mechanism. If a function is passed as a parameter, then it is only.

In this case, every 40 milliseconds. Up to this point, nothing is moving. To show some animation, let us modify the position each time like this: Now we will add the ability to move the ship according to the mouse position with the event al go. The mouse coordinates are given in the x and y parameters of the callback function. Thus it is possible to connect the ship x and y coordinates to the mouse x and y coordinates. That's it!

Now you are able to move a stamp in Algoid. This example can be used as the basis of a complete game. The steps of the program are: Conclusion Algoid is a great free tool, to learn or to teach programming. For further questions, suggestions or ideas, you can contact me at cyann74 gmail. Scratch is a versatile tool that includes many concepts found in other programming languages. Thankfully, Scratch can act as a server that sends and receives messages to clients on the same network.

This means that C or Python programs can be interfaced with Scratch, to provide additional functionality to low-level hardware and other protocols. The interface needs to be flexible enough to allow teachers to add additional devices as needed. To address these requests, the RpiScratchIO https: This article is the first in a series on RpiScratchIO and provides a basic introduction. Installation The first step in the installation is to install the dependencies. Then load the SPI module with the modprobe command given below or reboot the Raspberry Pi to load it.

Start Scratch from the desktop icon or from the menu. Then click on the " Sensi ng " menu and right click somewhere the " sensor val ue " text, near to the bottom of the tool palette. Then select " enabl e remote sensor connecti ons ". Once a program has been saved, this option is remembered as part of the program.

By default in the current version of Raspbian the remote sensor connections are enabled in the menu, but the server process is not running. In this case, select " di sabl e remote sensor connecti ons " by right clicking on sensor value. Then click again and enabl e " remote sensor connecti ons ". When the server process starts, a dialog box appears to report the change. The same dialog box appears when a program that includes remote sensors is loaded, signalling that the server process has started.

For non-GPIO devices, it may be possible to run as a normal user. To launch RpiScratchIO as the root user type: The configuration file contains the list of devices, matching the physical wiring of components to the Raspberry Pi.

raspberry pi 2 dedicated server Raspberry pi 2 dedicated server
raspberry pi 2 dedicated server Raspberry pi 2 dedicated server
raspberry pi 2 dedicated server Raspberry pi 2 dedicated server
raspberry pi 2 dedicated server Raspberry pi 2 dedicated server
raspberry pi 2 dedicated server Raspberry pi 2 dedicated server
raspberry pi 2 dedicated server Raspberry pi 2 dedicated server

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