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[[Category:internal]]
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== Arduino Yun Basics ==
  
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# arduino yun 101 ###
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This tutorial covers a little introduction to video recording with Arduino Yun and a USB webcam. No Arduino code in this first part, only some linux embedded configuration on the awesome Arduino Yun board!
  
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before starting, assure we have:
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I assume that the reader has a pc or a mac (named Bob) and an Arduino Yun, named Arduino. Moreover, I suppose the reader is quite familiar with the computer in general and know a little bit of shell/linux commands. In particular I in my case Bob is amac os/x and, and everything is starting with an iTerm2 session where everything begin with a dollar sign ($)..
  
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arduino ide version 1.5.6-r2: http://arduino.cc/en/main/software#toc3
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=== Before starting ===
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Assure we have:
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* Installed and working [http://arduino.cc/en/main/software#toc3 Arduino Ide version 1.5.6-r2].
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* Configured Arduino Yun board. See [http://arduino.cc/en/Guide/ArduinoYun Basic Arduino Yun wireless configuration].
  
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configuration: http://arduino.cc/en/Guide/ArduinoYun
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Install some useful packages for video and webcam:
  
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let's become confident with the board
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<pre>
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    ~ opkg update
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    ~ opkg install kmod-video-uvc kmod-video-pwc kmod-input-core
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    ~ opkg install libjpeg fswebcam mjpg-streamer
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    ~ opkg install ffmpeg ffserver
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    ~ opkg install python-openssl
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</pre>
  
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arduino.local does not always revole, safely to use  the ip number (192.168.240.1, for initial configuration).
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for ps3 eye (that is a gspca-ov534 type camera):
  
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to log into the yun via ssh (from mac-osx shell):
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<pre>
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ssh root@192.168.1.13
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    ~ opkg update
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    ~ opkg install kmod-input-core
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    ~ opkg install kmod-video-gspca-core
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    ~ opkg install kmod-video-gspca-ov534
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</pre>
  
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    #---------------------------------------------------------------------
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== With standard usb uvc cam ==
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    # install the video stuff on the yun
 
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    opkg update
 
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    opkg install kmod-video-uvc
 
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    opkg install kmod-video-pwc
 
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    opkg install kmod-input-core
 
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    opkg install libjpeg
 
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    opkg install fswebcam
 
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    wget http://www.custommobileapps.com.au/downloads/mjpg-streamer.ipk
 
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    opkg install mjpg-streamer.ipk
 
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    opkg install ffmpeg
 
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    opkg install ffserver
 
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    opkg install python-openssl
 
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    #---------------------------------------------------------------------
 
  
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after each installation step, to see free space remained on the hard disk:
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To see the stream (from Arduino to Bob):
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     ~ mjpg_streamer -i "input_uvc.so -d /dev/video0 -r 640x480" -o "output_http.so -p 8080 -w /mnt/sda1"
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    root@Arduino:~# df -h
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Then open "http://arduino.local:8080/?action=stream" in a brower (inside Bob)
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    Filesystem                Size      Used Available Use% Mounted on
 
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    rootfs                    7.5M      4.9M      2.6M  66% /
 
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    /dev/root                7.0M      7.0M        0 100% /rom
 
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    tmpfs                    29.9M    372.0K    29.5M  1% /tmp
 
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    tmpfs                  512.0K        0    512.0K  0% /dev
 
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    /dev/mtdblock3            7.5M      4.9M      2.6M  66% /overlay
 
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    overlayfs:/overlay        7.5M      4.9M      2.6M  66% /
 
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    /dev/sda1                7.4G    848.0K      7.4G  0% /mnt/sda1
 
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see what is already mounted:
 
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    mount
 
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see which distribution:
 
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    root@Arduino:~# cat /proc/version
 
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    Linux version 3.8.3 (federico@smilzo) (gcc version 4.6.4 20121210 (prerelease) (Linaro GCC 4.6-2012.12) ) #8 Mon Aug 19 16:22:39 CEST 2013
 
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# con la logitech ###
 
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to see the stream (from the os/x):
 
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open "http://arduino.local:8080/?action=stream" in a browser
 
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after running (on the yun via ssh):
 
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     mjpg_streamer -i "input_uvc.so -d /dev/video0 -r 640x480" -o "output_http.so -p 8080 -w /mnt/sda1"
 
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see if python server is running (from the os/x),
 
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after running "python -m SimpleHTTPServer" (on the yun via ssh):
 
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    nmap 192.168.1.13
 
 
      
 
      
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    Starting Nmap 6.40 ( http://nmap.org ) at 2014-04-30 13:03 CEST
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To shoot a photo (on Arduino):
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     Nmap scan report for 192.168.1.13
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     ~ fswebcam test.png
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    Host is up (0.19s latency).
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Or
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     Not shown: 995 closed ports
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     ~ ffmpeg -f video4linux2 -i /dev/video0 -vframes 1 test.jpeg
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    PORT    STATE SERVICE
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and to see the photo via http request from Bob, just start a
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    22/tcp  open  ssh
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     ~ python -m SimpleHTTPServer
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    53/tcp  open  domain
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in the directory where the photo is saved and access it by browsing (from Bob) to "192.168.1.13/test.png"
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    80/tcp  open  http
 
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     443/tcp  open  https
 
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    8000/tcp open  http-alt
 
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    Nmap done: 1 IP address (1 host up) scanned in 39.77 seconds
 
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to shoot a photo (on the yun via ssh):
 
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    fswebcam test.png
 
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# references ###
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== References ==
  
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* [http://forum.arduino.cc/index.php?topic=188690.0 Arduino Forum - Guide to Setup Streaming Web Cam on the Yun]
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* [http://neuroballs.com/2014/01/how-to-build-a-arduino-yun-powered-cat-camera/ How-to build an Arduino Yun powered Camera]
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* [https://learn.adafruit.com/wireless-security-camera-arduino-yun?view=all Adafruit - Wireless Security Camera with Arduino Yun]
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* [http://latanadelgurzo.blogspot.it/2012/11/webcam-in-streaming-con-openwrt.html La tana del gurzo - Webcam streaming con OpenWRT ]
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* [http://dev.mikamai.com/post/73613525813/arduino-yun-social-photo-camera Mikamai dev-blog - Arduino Yun Social photo camera ]
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* [http://dev.mikamai.com/post/76945627390/you-cant-touch-this-an-evil-arduino-based-alarm Mikamai dev-blog - You can't touch this, Arduino based alarm ]
  
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http://forum.arduino.cc/index.php?topic=188690.0
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[[Category:AugMilano]]
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http://dev.mikamai.com/post/73613525813/arduino-yun-social-photo-camera
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[[Category:arduino]]
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http://dev.mikamai.com/post/76945627390/you-cant-touch-this-an-evil-arduino-based-alarm
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[[Category:tutorial]]
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https://github.com/amicojeko/YouCantTouchThis
 
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http://neuroballs.com/2014/01/how-to-build-a-arduino-yun-powered-cat-camera/
 
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https://learn.adafruit.com/wireless-security-camera-arduino-yun?view=all
 
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http://latanadelgurzo.blogspot.it/2012/11/webcam-in-streaming-con-openwrt.html
 

Versione attuale delle 14:42, 14 feb 2016

Arduino Yun Basics

This tutorial covers a little introduction to video recording with Arduino Yun and a USB webcam. No Arduino code in this first part, only some linux embedded configuration on the awesome Arduino Yun board!

I assume that the reader has a pc or a mac (named Bob) and an Arduino Yun, named Arduino. Moreover, I suppose the reader is quite familiar with the computer in general and know a little bit of shell/linux commands. In particular I in my case Bob is amac os/x and, and everything is starting with an iTerm2 session where everything begin with a dollar sign ($)..

Before starting

Assure we have:

Install some useful packages for video and webcam: 

    ~ opkg update
    ~ opkg install kmod-video-uvc kmod-video-pwc kmod-input-core
    ~ opkg install libjpeg fswebcam mjpg-streamer
    ~ opkg install ffmpeg ffserver
    ~ opkg install python-openssl

for ps3 eye (that is a gspca-ov534 type camera): 

    ~ opkg update
    ~ opkg install kmod-input-core
    ~ opkg install kmod-video-gspca-core
    ~ opkg install kmod-video-gspca-ov534

With standard usb uvc cam

To see the stream (from Arduino to Bob): 

   ~ mjpg_streamer -i "input_uvc.so -d /dev/video0 -r 640x480" -o "output_http.so -p 8080 -w /mnt/sda1"

Then open "http://arduino.local:8080/?action=stream" in a brower (inside Bob)

To shoot a photo (on Arduino): 

   ~ fswebcam test.png

Or 

   ~ ffmpeg -f video4linux2 -i /dev/video0 -vframes 1 test.jpeg

and to see the photo via http request from Bob, just start a 

   ~ python -m SimpleHTTPServer

in the directory where the photo is saved and access it by browsing (from Bob) to "192.168.1.13/test.png"

References

Estratto da "http://wiki.wemake.cc/index.php?title=Tutorials/arduino-yun-videorecorder-101&oldid=1793"