RoboSavvy Forum

Webcam

2009-11-19T14:34:54+01:00

The roboard does not have MMX instructions and therefore some programs will not work.
Also not all cameras work on the robaord: the ones that have drivers that rely on MMX will also fail.

As final notice, the board is 486 based, therefore you can't expect the performance of a dual core intel processor... let's keep it real here.

At low resolutions people have been able to get decent frame rates, enough for a Vision Processing App.
Please see on this forum as there is a Webcam model from microsoft that is known to work well with the board.

Regards
Pedro.

Statistics: Posted by PedroR — Thu Nov 19, 2009 2:34 pm

Webcam

2009-11-19T14:16:44+01:00

I found that it just failed on Logitech Application,

but it's ok with Windows API, and quite slow.

Tsai Sung Yang wrote:
Is Logitech webcam work on Roboard?

I used 3 different cam, but failed at last.

1. QuickCam Easy/Cool
2. QuickCam Pro 5000
3. QuickCam Orbit/Sphere

They are all work on my PC.

Statistics: Posted by Tsai Sung Yang — Thu Nov 19, 2009 2:16 pm

Webcam

2009-11-19T12:41:39+01:00

Is Logitech webcam work on Roboard?

I used 3 different cam, but failed at last.

1. QuickCam Easy/Cool
2. QuickCam Pro 5000
3. QuickCam Orbit/Sphere

They are all work on my PC.

Statistics: Posted by Tsai Sung Yang — Thu Nov 19, 2009 12:41 pm

Webcam

2009-08-08T10:44:40+01:00

I am not going to use C but Java. I am going to make use of the JMF framework for analysing frames coming from the camera and USB2Dynamixel to connect to dynamixels. In fact the only problem I have is where to put USB2Dynamixel in my humanoid.

Statistics: Posted by JavaRN — Sat Aug 08, 2009 10:44 am

Webcam

2009-08-05T05:11:03+01:00

it's great to hear you got your webcam working

have you made some tests with OpenCV already?

Regards
Pedro.

Statistics: Posted by PedroR — Wed Aug 05, 2009 5:11 am

Webcam

2009-08-04T12:07:22+01:00

Microsoft's lifecam worked.

Statistics: Posted by JavaRN — Tue Aug 04, 2009 12:07 pm

Webcam

2009-07-31T13:07:38+01:00

High everyone. Right now I am on vacation away from home (I am writing this in an internet cafe). Before I left I ordered two Microsoft lifecam vx-500 as suggested by roborard's technical people, when I return back next week I will keep you informed with my progress.

Regarding the list of webcams mentioned by Roboard, I still feel that that is the right thing to do, as there are many webcams around and IMHO for a humanoid you need a cheap and light webcam so that if the robot falls while debugging (and they do!!!!!) one does not have to worry about the webcam.

Statistics: Posted by JavaRN — Fri Jul 31, 2009 1:07 pm

Webcam

2009-07-29T04:37:55+01:00

roboard wrote:
We have tried 5 cheap webcams (all work) previously, but I forget their brands except the Lifecam VX-500 which we are using. For this issue, we will try to collect some webcam testing results and report them here.

We found two other usbcams we have tried as follows:

T.C. STAR (TCB-P496) webcam
http://www.tcstar.com.tw/product_Para-Cam_TCB-P496.htm

and Q-hand webcam
http://www.monday.com.tw/gdsale/gdsale.asp?gdid=1286389&co_servername=32cf7cdd9dde58ca

Statistics: Posted by roboard — Wed Jul 29, 2009 4:37 am

Webcam

2009-07-28T17:04:35+01:00

theoretically yes.

The board has sound I/O and you can ad a usb webcam.

what we'd need to test is if we are able to tune it so that it can juggle all of these variables in real time: video, sound I/O, encoding and LAN.

My bet is that it can but you'd need to see video resolution low and may need to test and see if it works with wireless 802.11 as well in case you're building a mobile app.

Statistics: Posted by PedroR — Tue Jul 28, 2009 5:04 pm

Webcam

2009-07-28T16:55:07+01:00

Hi,
Can Skype run on the Roboard (with video support)?

Statistics: Posted by Zacohk — Tue Jul 28, 2009 4:55 pm

Webcam

2009-07-27T19:10:49+01:00

Hi JavaRN

any progress with this?
Do you need any additional information?

Regards
Pedro.

Statistics: Posted by PedroR — Mon Jul 27, 2009 7:10 pm

Webcam

2009-07-24T04:20:18+01:00

Hi, JavaRN,

it seems to be a compatibility problem of your webcam device driver. (Googling Lyromedia/Labtec webcam can also find some discussion about driver issues.) To confirm this, you may use AMCap to try your webcams again.

We have tried 5 cheap webcams (all work) previously, but I forget their brands except the Lifecam VX-500 which we are using. For this issue, we will try to collect some webcam testing results and report them here.

Also some extra information about usbcam performance on RoBoard: We recently receive a message from a China robotics team, which says that they can capture 640*480 images at 20fps from a usbcam on RoBoard with Linux. While we can only capture 640*480 images at 3~5fps using OpenCV 1.1pre1a, it seems that usbcams perform more fast on Linux, or that we need a good DirectShow capture library to get better capture performance on WinXP.

Statistics: Posted by roboard — Fri Jul 24, 2009 4:20 am

Webcam

2009-07-23T23:33:51+01:00

Hi JavaRN

From your description it seems an issue with the drivers as 'roboard' mentioned.

I myself have not yet tried a webcam on the ROboard but did you see the one the guys from Roboard used?

They have posted above saying they have used "Microsoft Lifecam VX-500" successfully.

Regards
Pedro.

Statistics: Posted by PedroR — Thu Jul 23, 2009 11:33 pm

Webcam

2009-07-23T21:06:28+01:00

- When does the blue screen occur? Immediately after you connect the camera or only after windows starts the hardware detection process and seems to install the drivers?

The blue screen appears not after installation, but as soon as I run the webcam program/ jmf to capture a screen (jmf is a java utility which is compatible with all windows webcams), even if I use the program that comes with the webcam.

Have you installed the VGA drivers AND the LAN drivers from Roboard?
When you go into device manager, are all devices OK or is there any device with a YELLOW exclamation or a red symbol?

All devices are ok in fact I also connected to the internet and to my home network.

Did you manage to install a webcam on Roboard? Can you tell me the brand and model please?

Statistics: Posted by JavaRN — Thu Jul 23, 2009 9:06 pm

Webcam

2009-07-23T13:01:48+01:00

Hi JavaRN

0x7E is typically caused by either bad memory or bad device driver.
(in general bad memory can be the cause of anything lol)

The resources that describe the problem are available here http://support.microsoft.com/kb/330182/en-us
and here
http://www.aumha.org/a/stop.php

I have two more questions:

- When does the blue screen occur? Immediately after you connect the camera or only after windows starts the hardware detection process and seems to install the drivers?

- Have you installed the VGA drivers AND the LAN drivers from Roboard?
When you go into device manager, are all devices OK or is there any device with a YELLOW exclamation or a red symbol?

As a general recommendation I would install all drivers from Roboard and also try connecting a Scanner or a Photograph machine to see if you get the Blue Screen as well.
Scanners rely on a lot of the same API of Webcameras so if a scanner works that would exclude any problem with Windows/TWAIN and would narrow it down to the device drivers of the webcam.

Statistics: Posted by PedroR — Thu Jul 23, 2009 1:01 pm