Setting up wifi

1. Open terminal and ssh into your pi or connect your pi to a monitor and keyboard.
2. Open the /etc/network/interfaces file

       sudo nano /etc/network/interfaces

3. Change the file to the following::

    auto lo
   
   iface lo inet loopback
   iface eth0 inet dhcp
   
   allow-hotplug wlan0
   iface wlan0 inet manual
   wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
   
   iface school inet static
   address <school address>
   gateway <school gateway>
   netmask <school netmask>
   
   iface home inet static
   address <home address>
   gateway <home gateway>
   netmask <home netmask>
    

4. CTRL+X,Y,RETURN
5. Open the wpa_supplicant.conffile

   sudo nano /etc/wpa_supplicant/wpa_supplicant.conf
           

6. Add the following:

       ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
   update_config=1
   network={
       ssid="SCHOOLS NETWORK NAME"
       psk="SCHOOLS PASSWORD"
       proto=WPA
       key_mgmt=WPA-PSK 
       pairwise=TKIP
       auth_alg=OPEN
       id_str="school"
   }
   
   network={
       ssid="HOME NETWORK NAME"
       psk="HOME PASSWORD"
       proto=WPA
       key_mgmt=WPA-PSK 
       pairwise=TKIP
       auth_alg=OPEN
       id_str="home"
   }
           

7. CTRL+X,Y+RETURN
8. Avahi comes installed on the Raspberry Pi. But update before you do anything:

   sudo apt-get update 

9. "Zeroconf is 'a set of techniques that automatically creates a usable Internet Protocol (IP) network without manual operator intervention or special configuration servers.'
   
   Avahi is an implementation of zeroconf which 'ships with most Linux and *BSD distributions', but not the Pi's Debian distro. Zeroconf will be familiar to Apple users as Bonjour, and is pretty clever tech which means that things Just Work when sharing stuff across computers on a network. In this context, it means that once [you've] set it up on the Pi, [you'll] be able to address it as:
   raspberrypi.local
   
   regardless of what IP address it's been assigned on your local network. This is handy if its IP is likely to change regularly, and even means we'll continue to be able to address it if we're on a different network (say, shuffling between home & work networks)."
   
   Install avahi with the following commands on the Pi:

   sudo apt-get install avahi-daemon
   

10. Type:

    sudo insserv avahi-daemon

11. Create a config file for Avahi at /etc/avahi/services/multiple.service. I did this with the following command:

    sudo nano /etc/avahi/services/multiple.service

12. The contents of this file should be something like the following, courtesy of aXon on the Rasperry Pi forums:

    <?xml version="1.0" standalone='no'?>
    <!DOCTYPE service-group SYSTEM "avahi-service.dtd">
    <service-group>
            <name replace-wildcards="yes">%h</name>
            <service>
                    <type>_device-info._tcp</type>
                    <port>0</port>
                    <txt-record>model=RackMac</txt-record>
            </service>
            <service>
                    <type>_ssh._tcp</type>
                    <port>22</port>
            </service>
    </service-group>

13. CTRL+X, Y, RETURN
14. Restart Avahi to apply the new configuration

    sudo /etc/init.d/avahi-daemon restart

15. The Pi should now be addressable from other machines as raspberrypi.local, for example:
    ssh pi@raspberrypi.local
16. Create a config file for Avahi You need to open the config file

        sudo nano /etc/avahi/avahi-daemon.conf
            

17. Navigate to where you see [server]. Uncomment #host-name=foo and set the host-name to something that makes sense

       host-name=liz-pi
            

18. Press CTRL+X, Y and RETURN
19. Shutdown
20. Install Wireless module and restart.
21. I'm using IP Scanner to find my pi. If all went well I should find li pi, an IP and a mac address.
22. You should be able to now log in like this:

       ssh pi@liz-pi.local
            

23. If you try to log in and see:
    Do this:
    
    

      # perl -pi -e 's/\Q$_// if ($. == 6);' ~/.ssh/known_hosts
            

    
    Change the number to the line number shown in the message
    

    ---

Transfering Files

You can use SFTP to transfer content to the Pi.

Download FileZilla onto your computer as your SFTP client.

1. Open the application
2. Click File > Site Manager
3. In the General tab fill out the relevant connection details:
   • Host:ip of your pi
   • Protocol: select SFTP-SSH File Transfer Protocol
   • Logon Type: set to normal
   • User: specify the user (pi)
   • Password: Specify the current password for the chosen account
4. Click connect
5. Navigate to /var/www
6. Drag and drop any ontent into the target pi directory in FileZilla
7. Click Disconnect on the toolbar to end the session

Setting up phpMyAdmin

phpMyAdmin is an open source PHP web application that provides you with a graphical front end interface to MySQL. This is a browser-based tool, but there is still a bit of installation.

1. In terminal type:

       sudo apt-get install phpmyadmin
       

2. In the configuring screen press Spacebar to place the selection asterisk next to apache2. Then press Tab and Enter
3. When the next screen appears, select Yes to install the database.
4. Type in the MySQL root user password and press Enter to continue. Then confirm the phpMyAdmin admin password
5. Now you need to open the Apache 2 configuration file and link Apache to phpMyAdmin:

    sudo nano /etc/apache2/apache2.conf
    

6. In the conf file press CTRL+V repeatedly to scroll to the bottom of the file. At the bottom of the file add this line:

    Include /etc/phpmyadmin/apache.conf
   

7. Save changes and exit nano
8. Restart apache by typing:

    sudo /etc/init.d/apache2 restart
   

9. To test , start LXDE, open Midori and navigate to http://localhost/phpmyadmin
10. Log in with the username root and your MySQL admin password.

Joomla

Joomla is a content management system.

1. From the LXDE open Midori and download the latest version of Joomla.
2. Open Terminal and unpack the contents of Jooma to the apache content directory. cd into the content directory and then type Replace Joomla.zip, with the downloaded Joomla name

   sudo unzip joomla.zip -d /var
           

3. Open the php configuration file:

   sudo nano /etc/php5/apache2/php.ini
           

4. In nano press CTRL+W to search for output_buffering
5. Set the Development Value and Production Value to 0
6. Press CRTL+O, Enter and then CTRL+X to save and exit
7. Reboot the pi

   sudo reboot
           

8. After reboot, open the LXDE and open another terminal seesion so that you can creare the Joomla configuration file and ensure that it is writable:

   cd /var/www
   sudo touch configuration.php
   sudo chmod 777 configuration.php
           

9. Open Midori and navigate to the apache content page:

   http://localhost
           

10. If you see the default apache page instead of the Joomla page, then delete the old index page:

    sudo rm index.html
            

11. If you cannot delete the installation page, in terminal:

    cd /var/www
    sudo rm -rf installation/
            

On the Internet

By putting your pi on the internet you can take advantage of services like Dropbox and Pandora, you can communicate with other users and you can use internet-dependent applications.

If you are going to do this, you must consider viruses and exposing private data.

Some precautions you can take involve configuring the pi with a static ip and using a DNS service.

Using No-ip

1. Navigate to www.no-ip.com and create a free account
2. Navigate to manage hosts and set up your ip.
3. Create a subdirectory inside your home directory so that you have a place to store the No-IP client software

   cd ..
         mkdir noip
         cd noip
     

4. Download No-IP's dynamic update client from www.no-ip.com

   wget http://www.no-ip.com/client/linux/noip-duc-linux.tar.gz
     

5. Unpack and navigate to the directory:

   ar vzxf noip-duc-linux.tar.gz
   ls no*
   cd noip-2.1.9.1
     

6. You now have uncompiled source files that you will need to compile

   sudo make
   sudo make install
     

7. Enter your no-ip membership credentials
8. Run the client:

   sudo /usr/local/bin/noip2
     

9. Log into your router and set up port forwarding to allow traffic on TCP port 80 (HTTP)
10. Open a web browser on another computer and load your Joomla site. Follow this tutorial to get the client to run automatically at startup.

A web Cam

Your Pi has a Camera Serial Interface 2 camera connector, which you can find between the Ethernet and HDMI port.

Never plug or unplug hardware from the pi while it is running, but you will need to enable the use of the camera before you can use it.

1. While connected to your computer update the software

    sudo apt-get update && sudo apt get upgrade   
   

2. Now you want to navigate to the raspi-config menu:

    sudo raspi-config  
   

3. Scroll down to camera and press ENTER
4. Choose Enable suport for the Raspberry Pi and press ENTER
5. Exit the config menu and reboot your pi
6. Now shutdown your pi
7. WARNING: The interface is very delicate
   
   Make sure that your Pi is not powered
8. Gently grasp the edges of the CSI-2 connector and carefully lift it off (it will remain attached, just lift it about a millimeter).
9. Insert the camera board ribbon cable into the interface with the copper traces facing away from the Ethernet port
10. When the cable is connected to the interface, gentlt press the retaining clip down to lock the cable in place.

1. To tell your Pi to take a picture:

    raspistill -o myImage.jpg -q 50 -t 10000 
   

   Which creates a still image with the name myImage.jpg, a quality of 50% (0 being the lowest and 100 being the highest) and a 10 second shutter delay.

2.  raspistill -v -w 1024 -h 768 -o myImage.jpg -q 50 -t 10000 
   

   the -v turns on the verbose command and is helpful for debugging
   -w is the width and -h is the height of the image.
3. To see more raspistill commands type:

    raspistill | less
   

 raspivid -o fiveseconds.h264 -t 5000

 raspivid -o smallvid.h264 -t 15000 -w 1024 -h 768

sudo apt-get install -y gpac

MP4Box -fps 30 -add smallvid.h264 smallvid.mp4

omxplayer smallvid.mp4