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RPI Kiosk

Webserver

To host the interface (which is simply a webpage), i needed an Apache webserver to be running on the Raspberry. Since this is one of the most common uses of the Rasberry, the installation of Apache is very streamlined.

First I made sure i was running the latest system software by running the following command:

sudo apt-get update && apt-get upgrade -y
No it’s time to actually install apache:

sudo apt-get install apache2 apache2-doc apache2-utils
Done! That’s all there is. But to make sure I was able to use some PHP scripts on the webserver (more about that later), I also added PHP support:

sudo apt-get install libapache2-mod-php5 php5 php-pear php5-xcache
Done … again! Reboot, and the webserver is up and running! I dropped a index.php file in the /var/www folder, and pointed my browser to the Raspberry’s ip adress and yes, it worked.

Kioskmode

Now, to make sure the Raspberry actually shows the webpage I will be using Chromium in kioskmode. Chromium is an open source browser which is able to run on the Raspberry’s OS.

Once again, installing was easy:

sudo apt-get install chromium x11-xserver-utils unclutter

But this time, it needed some extra configuration to disable the
screensaver and autoboot in kioskmode. To do this i
edited /etc/xdg/lxsession/LXDE/autostart and added a # before:

/etc/xdg/lxsession/LXDE-pi

@xscreensaver -no-splash
Additionally, I added the following lines:

@xset s off
@xset -dpms
@xset s noblank
@chromium --kiosk --incognito http://localhost
This completely disables all screensaving features, and makes sure chromium will start after boot an points to the localhost webserver in full screen mode.

Time to save the file and reboot once more to check if it works. Since the Raspberry isn’t worlds fastest computer, it took a while, but eventually the testsite appeared on the 90 degrees rotated screen … Yeah!

On to the last part of the project. The development of the interface.

# enable raspicam
start_x=1
gpu_mem=256

# magic mirror
display_rotate=1

display_rotate=0        Normal
display_rotate=1         90 degrees
display_rotate=2        180 degrees
display_rotate=3        270 degrees
display_rotate=0x10000  horizontal flip
display_rotate=0x20000  vertical flip

sudo apt-get install sqlite3

sudo apt-get install php5-sqlite

Install avahi with the following commands on the Pi:

sudo apt-get install avahi-daemon

and then on older Debian installs:

sudo update-rc.d avahi-daemon defaults

or on newer Raspbian installs:

sudo insserv avahi-daemon

(if in doubt, you're probably on the newer one).
Create a configfile for Avahi at /etc/avahi/services/multiple.service. I did this with the following command:

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

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>

Apply the new configuration with:

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

The Pi should now be addressable from other machines as raspberrypi.local, for example:

ssh pi@raspberrypi.local

 I managed to stream from my PI to a Web server with the compiled in module nginx-rtmp. To save hassles with ffmpeg I recommend a rolling distribution like Archlinux Arm. raspivid -vf -t 0 -fps 25 -b 2000000 -o - | ffmpeg -i - -vcodec copy -an -r 25 -f flv rtmp://x220/myapp/mystream Some notes: The hardware encoded h264 video stream takes about ...
webcam streaming-video camera
answered Aug 3 '13 at 4:36
hendry
1694


4

What streaming solution for the Picam has the smallest lag?
With Ubuntu 14.10 and Gstreamer I reach 100 to 116 ms latency with 1280 x 720 @ 60Hz. Tanks to @Antonvh who puts me on the right way. I reproduce here the solution for latter reference. To stream from the Pi : raspivid -t 0 -b 2000000 -fps 60 -w 1280 -h 720 -o - \ | gst-launch-1.0 -e -vvv fdsrc ! h264parse ! rtph264pay pt=96 config-interval=5 \ ! ... 

http://raspberrypi.stackexchange.com/tags/streaming-video/hot

flash tests

apt-get install xmms2-plugin-flv

apt-get install xul-ext-flashblock

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