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by murali
Tue Mar 05, 2013 8:20 am
Forum: Graphics, sound and multimedia
Topic: Image transmission via RF link
Replies: 0
Views: 551

Image transmission via RF link

Hi all, I am in need of transmitting image via an RF link. A Radio Transmitter is connected to General Purpose IO port available on raspberry Pi to transmit the image. I think, I will have to convert the image to data to root it through GPIO. Please let me know the options to acheive the above objec...
by murali
Mon Feb 25, 2013 2:56 pm
Forum: Graphics, sound and multimedia
Topic: convert image to rtty
Replies: 6
Views: 2674

Re: convert image to rtty

Thanks Dave!
by murali
Mon Feb 25, 2013 1:41 pm
Forum: Graphics, sound and multimedia
Topic: convert image to rtty
Replies: 6
Views: 2674

Re: convert image to rtty

Thanks rurwin
by murali
Mon Feb 25, 2013 11:14 am
Forum: Graphics, sound and multimedia
Topic: convert image to rtty
Replies: 6
Views: 2674

Re: convert image to rtty

ok..Let me be very clear. I want the images taken by camera (webcam ) connected to USB interface of Raspberry Pi to be transmitted to ground station. Those images shall be transmitted over radiolink. I have seen some of the high altitude ballooning hobbyists who got succeeded with the same experimen...
by murali
Mon Feb 25, 2013 9:25 am
Forum: Graphics, sound and multimedia
Topic: convert image to rtty
Replies: 6
Views: 2674

convert image to rtty

Hi all, I am working on a project for which I need to interface Raspberry Pi with NTX2 Radio transmitter. As part of the above, I would like to know how the image is converted to RTTY? I learnt that NTX2 is a frequency modulator (Voltage controlled osciallator). I am unable to understand how the ima...
by murali
Fri Feb 22, 2013 11:12 am
Forum: Beginners
Topic: Motion - Save Images to Directory According to Date
Replies: 25
Views: 25386

Re: Motion - Save Images to Directory According to Date

@SirLagZ
Thanks a lot.. I am done with it. I could see and save images on windows. Thanks again. Your replies were very helpful.
by murali
Fri Feb 22, 2013 7:43 am
Forum: Beginners
Topic: Motion - Save Images to Directory According to Date
Replies: 25
Views: 25386

Re: Motion - Save Images to Directory According to Date

I want to see the images which are stored in SD card in a windows system. But, when I opened the SD card in my windows system I could only see the following list bootcode(VLC media file) cmdline(notepad) config(notepad) fixup.dat fixup_cd.dat fixup_x.dat issue(notepad) kernel(DiskImage file) kernel_...
by murali
Fri Feb 22, 2013 7:37 am
Forum: Beginners
Topic: Motion - Save Images to Directory According to Date
Replies: 25
Views: 25386

Re: Motion - Save Images to Directory According to Date

@SirLagZ Thanks!...it worked. I did not create any configuration file but gave permission to everyone to access my directory (which I created in /usr/local with the name "webcam" ) by executing the following command sudo chmod 777 /usr/local/webcam this enabled motion to store images in the new dire...
by murali
Thu Feb 21, 2013 7:18 am
Forum: Beginners
Topic: Motion - Save Images to Directory According to Date
Replies: 25
Views: 25386

Re: Motion - Save Images to Directory According to Date

hi all, I would like to save the webcam images in a directory. I am using motion application and Microsoft vx 700 model. As of now, my images are getting saved in the motion subdirectory of tmp directory. It must be obvious (as it is tmp directory) that the images are not visible after the reboot of...
by murali
Tue Feb 19, 2013 1:34 am
Forum: Automation, sensing and robotics
Topic: OpenCV + webcam
Replies: 42
Views: 68964

Re: OpenCV + webcam

thanks a lot!
by murali
Mon Feb 18, 2013 12:12 pm
Forum: Automation, sensing and robotics
Topic: OpenCV + webcam
Replies: 42
Views: 68964

Re: OpenCV + webcam

hi hoeherman,
please let me know how to change the timeout value in uvcvideo.ko file
by murali
Mon Feb 18, 2013 3:35 am
Forum: Automation, sensing and robotics
Topic: OpenCV + webcam
Replies: 42
Views: 68964

Re: OpenCV + webcam

hi hoeherman, thanks! my webcam atleast started showing green light ...but VIDIOC_QUERYMENU: Invalid Argument (3 times) select timeout ... is shown I have used the following code: #! usr/bin/python import cv2 cam=cv2.VideoCapture(0) s,img=cam.read() if s: cv2.namedwindow("camera", cv2.CV_WINDOW_AUTO...
by murali
Sat Feb 16, 2013 10:59 am
Forum: Automation, sensing and robotics
Topic: OpenCV + webcam
Replies: 42
Views: 68964

Re: OpenCV + webcam

hi hoehermann,
The link contains the video of dice. I could not find any code there. Please give me the link to the code which you are refering to. Thanks!
by murali
Sat Feb 16, 2013 4:56 am
Forum: Automation, sensing and robotics
Topic: OpenCV + webcam
Replies: 42
Views: 68964

Re: OpenCV + webcam

hi hoehermann,
Thanks.

You mentioned that open cv2 as cv; is the place where I went wrong. Is it the only one and if so , what it should be?.
PS:I am very new to python.
by murali
Fri Feb 15, 2013 5:43 pm
Forum: Automation, sensing and robotics
Topic: OpenCV + webcam
Replies: 42
Views: 68964

OpenCV 2.3.1 +webcam+ python/C

Hi all, I have installed openCV as per the instructions provided at http://mitchtech.net/raspberry-pi-opencv/ version number is 2.3.1. I have used the C code provided in the previous posts of this very thread to capture the webcam image but when I compiled ...I got a big list of errors of nature und...
by murali
Thu Feb 14, 2013 6:57 am
Forum: Raspbian
Topic: Upgrade problem
Replies: 15
Views: 12026

Re: Upgrade problem

Thank you Plugwash. With great difficulty, I and my friend together could understand the problem is attributable to change in file to 2.13-37+ by doing night out. Finally, we could fix the issue. Good that you have updated. It will be helpful to others. Will be looking forward for your help in futur...
by murali
Mon Feb 11, 2013 3:12 pm
Forum: Raspbian
Topic: Upgrade problem
Replies: 15
Views: 12026

Re: Upgrade problem

sorry, I missed the following wget http://archive.raspbian.org/raspbian/po ... 49_all.deb --2013-02-11 20:40:02-- http://archive.raspbian.org/raspbian/po Resolving archive.raspbian.org (archive.raspbian.org)... 89.16.177.90, 2001:41c8:10:25a::10 Connecting to archive.raspbian.org (archive.raspbian.o...
by murali
Mon Feb 11, 2013 3:06 pm
Forum: Raspbian
Topic: Upgrade problem
Replies: 15
Views: 12026

Re: Upgrade problem

hi arne, I am facing similar problem sudo apt-get update works fine but sudo apt-get upgrade is reporting problem in detail: sudo apt-get update Hit http://archive.raspberrypi.org wheezy InRelease Hit http://mirrordirector.raspbian.org wheezy InRelease Hit http://archive.raspberrypi.org wheezy/main ...
by murali
Sat Feb 09, 2013 12:00 pm
Forum: Camera board
Topic: webcam interfacing with rpi
Replies: 1
Views: 1966

webcam interfacing with rpi

Hi all, I have been trying to interface webcam "microsoft vx-700" with Raspberry Pi loaded with Raspbian OS and I used the command sudo apt-get update but an error is shown - " some index files failed to download. They have been ignored or old ones used instead". please let me know how can I overcom...

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