Differenze tra le versioni di "Tutorials/arduino-yun-videorecorder-101"

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(8 versioni intermedie di un altro utente non mostrate)
Riga 10: Riga 10:
 
* Configured Arduino Yun board. See [http://arduino.cc/en/Guide/ArduinoYun Basic Arduino Yun wireless configuration].
 
* Configured Arduino Yun board. See [http://arduino.cc/en/Guide/ArduinoYun Basic Arduino Yun wireless configuration].
  
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===Let's become confident with the board===
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Install some useful packages for video and webcam:
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arduino.local does not always resole, so safely to use  the ip number (192.168.240.1, for initial configuration) then the host name.
 
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To log into the yun via ssh (from Bob shell):
 
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$ ssh root@192.168.1.13
 
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Now you're logged in the Arduino Yun linux board. We are inside an embedded linux machine, in particular a child of [http://en.wikipedia.org/wiki/OpenWrt OpenWrt].
 
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For briefness I will differentiate what is happening inside the iTerm session in Bob with $ and what is happening inside the yun shell accessed via ssh with ~.
 
  
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See which distribution, kernel version, etc:
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<pre>
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    ~ 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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See if the micro sd card is already mounted:
 
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    mount
 
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I won't specify every time the path but I'm going to use the micro sd card for storing videos or pic rues from the welcome.
 
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Install some useful packages for video and webcam:
 
 
     ~ opkg update
 
     ~ opkg update
 
     ~ opkg install kmod-video-uvc kmod-video-pwc kmod-input-core
 
     ~ opkg install kmod-video-uvc kmod-video-pwc kmod-input-core
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     ~ opkg install libjpeg fswebcam
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     ~ opkg install libjpeg fswebcam mjpg-streamer
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    ~ wget http://www.custommobileapps.com.au/downloads/mjpg-streamer.ipk
 
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    ~ opkg install mjpg-streamer.ipk
 
 
     ~ opkg install ffmpeg ffserver
 
     ~ opkg install ffmpeg ffserver
 
     ~ opkg install python-openssl
 
     ~ opkg install python-openssl
 +
</pre>
  
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After each installed package, to see free space on the hard disk:
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for ps3 eye (that is a gspca-ov534 type camera):
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    ~ df -h
 
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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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To run a python server
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<pre>
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     ~ python -m SimpleHTTPServer
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     ~ opkg update
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     ~ opkg install kmod-input-core
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See if python server (or the streaming server, vide infra) is running (from Bob),
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     ~ opkg install kmod-video-gspca-core
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     $ nmap 192.168.1.13
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     ~ opkg install kmod-video-gspca-ov534
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</pre>
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     Starting Nmap 6.40 ( http://nmap.org ) at 2014-04-30 13:03 CEST
 
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    Nmap scan report for 192.168.1.13
 
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    Host is up (0.19s latency).
 
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    Not shown: 995 closed ports
 
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    PORT    STATE SERVICE
 
−
    22/tcp  open  ssh
 
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    53/tcp  open  domain
 
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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
 
  
 
== With standard usb uvc cam ==
 
== With standard usb uvc cam ==
Riga 74: Riga 37:
 
To shoot a photo (on Arduino):
 
To shoot a photo (on Arduino):
 
     ~ fswebcam test.png
 
     ~ 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  
 
and to see the photo via http request from Bob, just start a  
 
     ~ python -m SimpleHTTPServer
 
     ~ 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"
 
in the directory where the photo is saved and access it by browsing (from Bob) to "192.168.1.13/test.png"
−
 
−
== With PS3 Eye webcam ==
 
  
 
== References ==
 
== References ==
Riga 87: Riga 50:
 
* [http://latanadelgurzo.blogspot.it/2012/11/webcam-in-streaming-con-openwrt.html La tana del gurzo - Webcam streaming con OpenWRT ]
 
* [http://latanadelgurzo.blogspot.it/2012/11/webcam-in-streaming-con-openwrt.html La tana del gurzo - Webcam streaming con OpenWRT ]
 
* [http://dev.mikamai.com/post/73613525813/arduino-yun-social-photo-camera Mikamai dev-blog - Arduino Yun Social photo camera ]
 
* [http://dev.mikamai.com/post/73613525813/arduino-yun-social-photo-camera Mikamai dev-blog - Arduino Yun Social photo camera ]
−
* [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 ]
+
* [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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[[Category:staff]]
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[[Category:AugMilano]]
 
[[Category:arduino]]
 
[[Category:arduino]]
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[[Category:tutorial]]

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"