Ohayden: /* Tips and Tricks */

2008-05-11T20:01:25Z

Tips and Tricks

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= Web Cam / Motion Detection =

== Hardware ==

{| border="1"
! Manufacturer !! Model !! Misc
|-
| Logitech || QC Communicate STX || vend/prod from dmesg: 0x46d/0x8ad
|-
| NewPoint || 4-Port USB Hub || USB Version 1.X
|}
'''''*NOTE*''' I tried a Kensington (model 33141) USB 2.0 hub that is backward compatible with 1.x and it didn't work.''

== Setup ==
*Make sure ipkg is updated:
ipkg update
*Install USB drivers:
ipkg install kmod-usb-core
ipkg install kmod-usb-ohci
ipkg install kmod-videodev
reboot
* After rebooting, try plugging in the USB hub and you should get a message in dmesg at such:
hub.c: new USB device 01:02.0-1, assigned address 2
hub.c: USB hub found
hub.c: 4 ports detected

*Install the spca driver (backed up in the wrt\cam folder):
wget http://pmeerw.net/openwrt/kmod-spca5xx_2.4.30+20060501-brcm-1_mipsel.ipk
ipkg install kmod-spca5xx_2.4.30+20060501-brcm-1_mipsel.ipk
insmod videodev
insmod spca5xx
*Plug in the USB camera and you will get the following messags from dmesg:
hub.c: new USB device 01:02.0-1.4, assigned address 5
drivers/usb/spca5xx.c: USB SPCA5XX camera found. Logitech QC Communicate STX
drivers/usb/spca5xx.c: [spca5xx_probe:8380] Camera type JPEG
drivers/usb/zc3xx.h: [zc3xx_config:415] Find Sensor HV7131R(c)
drivers/usb/spca5xx.c: [spca5xx_getcapability:2207] maxw 640 maxh 480 minw 176 minh 144
*To automatically do the "insmod", append to /etc/modules as such:
echo "videodev" >> /etc/modules
*Install motion and the jpeg library (backed up in the wrt\cam folder):
ipkg install http://naaa.de/programme/motion/libjpeg_6b-1_mipsel.ipk
ipkg install http://naaa.de/programme/motion/motion_3.2.6-1_mipsel.ipk
'''''*NOTE*''' Motion requires the "libpthread" package, but it should automatically pull it down from openwrt.org''
*Push up the default config from the wrt\cam\motion_confs\single folder:
scp motion.conf root@192.168.0.222:/etc/
*You should be able to run motion now, by typing "motion -n". If you have firefox (or another mozilla based browser), you can point it to the IP:8081 as such:
http://192.168.0.22:8081
*Ctrl+C to get out of motion.
*Since I can't always use firefox, I install a java (yuck) applet (backed up in the wrt\cam folder) for streaming as such:
wget http://www.charliemouse.com/code/cambozola/cambozola-latest.tar.gz
gunzip cambozola-latest.tar.gz
tar xf cambozola-latest.tar.gz <--- I received a "tar: Invalid tar magic" message. It still works, but I should investigate later.
mkdir /www/webcam/
mv cambozola-0.68/* /www/webcam
cd /www/webcam/
vim example.html
'''''*NOTE*''' Change http://localhost:2020 to your IP:PORT as such: http://192.168.0.222:8081''<BR>
'''''*NOTE*''' Change width / height as desired, I used 600x480.''
mv example.html index.html
*Now you can run motion with either motion by itself for daemon mode, or with the -n for non-daemon mode.
*Point your IE browser to http://192.168.0.222/webcam and you should see your cam's image stream.

==Tips and Tricks==
For spcacat use spca5xx_lite.o (backed up in the wrt\cam folder):
*Needs the following packages:
ipkg install libgcc
*insmod spca5xx_lite.o
*ln -s /dev/v4l/video0 /dev/video0 <---Won't work with /dev/v41/video0
*spcacat -d /dev/video0 -s 640x480 -g -f jpg -p 3000 -o

==Troubleshooting==
=== Black Picture ===
The web cam stream is showing a black picture and nothing more.
<span style="color: green">'''Solution'''</span>
Kill motion and re-start it and it should solve the issue.
----

== References ==
*http://www.macsat.com/macsat/content/view/36/30/
*http://wiki.openwrt.org/VideoSpca5xx
*http://wiki.openwrt.org/webcam?highlight=%28webcam%29
*http://www.charliemouse.com/code/cambozola/

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Ohayden: /* Tips and Tricks */