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

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(6 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].
  
===Let's become confident with the board===
+
Install some useful packages for video and webcam:
arduino.local does not always resole, so safely to use  the ip number (192.168.240.1, for initial configuration) then the host name.
 
 
 
To log into the yun via ssh (from Bob shell):
 
$ ssh root@192.168.1.13
 
 
 
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].
 
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 ~.
 
  
See which distribution, kernel version, etc:
+
<pre>
    ~ cat /proc/version
 
    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
 
 
 
See if the micro sd card is already mounted:
 
    mount
 
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.
 
 
 
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
     ~ opkg install libjpeg fswebcam
+
     ~ opkg install libjpeg fswebcam mjpg-streamer
    ~ wget http://www.custommobileapps.com.au/downloads/mjpg-streamer.ipk
 
    ~ opkg install mjpg-streamer.ipk
 
 
     ~ opkg install ffmpeg ffserver
 
     ~ opkg install ffmpeg ffserver
 
     ~ opkg install python-openssl
 
     ~ opkg install python-openssl
 +
</pre>
  
After each installed package, to see free space on the hard disk:
+
for ps3 eye (that is a gspca-ov534 type camera):
    ~ df -h
 
    Filesystem                Size      Used Available Use% Mounted on
 
    rootfs                    7.5M      4.9M      2.6M  66% /
 
    /dev/root                7.0M      7.0M        0 100% /rom
 
    tmpfs                    29.9M    372.0K    29.5M  1% /tmp
 
    tmpfs                  512.0K        0    512.0K  0% /dev
 
    /dev/mtdblock3            7.5M      4.9M      2.6M  66% /overlay
 
    overlayfs:/overlay        7.5M      4.9M      2.6M  66% /
 
    /dev/sda1                7.4G    848.0K      7.4G  0% /mnt/sda1
 
  
To run a python server
+
<pre>
     ~ python -m SimpleHTTPServer
+
     ~ opkg update
 
+
     ~ opkg install kmod-input-core
See if python server (or the streaming server, vide infra) is running (from Bob),
+
     ~ opkg install kmod-video-gspca-core
     $ nmap 192.168.1.13
+
     ~ opkg install kmod-video-gspca-ov534
      
+
</pre>
     Starting Nmap 6.40 ( http://nmap.org ) at 2014-04-30 13:03 CEST
 
    Nmap scan report for 192.168.1.13
 
    Host is up (0.19s latency).
 
    Not shown: 995 closed ports
 
    PORT    STATE SERVICE
 
    22/tcp  open  ssh
 
    53/tcp  open  domain
 
    80/tcp  open  http
 
    443/tcp  open  https
 
    8000/tcp open  http-alt
 
   
 
    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 ]  
 
 
  
[[Category:staff]]
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[[Category:AugMilano]]
 
[[Category:arduino]]
 
[[Category:arduino]]
 
[[Category:tutorial]]
 
[[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