Webcam not working and advice for new webcam


5 posts
by timhunderwood » Sat Nov 03, 2012 1:11 pm
Hi,

I bought a basic webcam to use with my raspberry pi. Unfortunately I didn't do my research and didn't realise that not all webcams work well the raspberry pi. This is the webcam I bought http://www.amazon.co.uk/gp/product/B004 ... hs_product .

It is detected by the pi but whenever I take a picture (fswebcam, fget etc.) the picture comes out entirely black. Is there anything I should try? Is there anyway to convert the windows driver to a linux driver for raspberry pi using something like this http://techtips.salon.com/convert-windo ... 11847.html ? I've done a lot of maths and physics related programming but nothing much with drivers /hardware so I'm a bit lost here.

Alternatively can someone recommend a webcam that I can buy that will be able to take decent pictures / video and require minimal setup? I.e. which from this list : http://elinux.org/RPi_VerifiedPeripherals#USB_Webcams is best?
Posts: 11
Joined: Fri Aug 31, 2012 10:42 am
by pluggy » Sat Nov 03, 2012 2:26 pm
Some of the ones on the list don't work properly. I bought a Microsoft VX-800 and found it had problems at its native resolution (VGA). The Pi's USB issues are shown up worst with Webcams in my experience. From reading on here, sometimes upgrading the Pi can stop a previously working device and some distros work better than others. I have a Sony PS2 Eyetoy which works as well as any but the pictures aren't exactly wonderful and it occasionally mangles the picture. All of my 8 or so webcams I've accrued over the years work perfectly on Linux on other hardware, Only 2 half work on the Pi.

Generally, the smaller the frame you set the camera to run at the better the results. All the running webcams on Pis out there generally have postage stamp sized pictures.
Don't judge Linux by the Pi.......
User avatar
Posts: 2407
Joined: Thu May 31, 2012 3:52 pm
Location: Barnoldswick, Lancashire,UK
by MattHawkinsUK » Sat Nov 03, 2012 10:11 pm
It might be worth waiting for the official camera module. It should be announced soon I hope.

This will obviously have the full support of the Foundation and will be a better bet for future compatibility.
My Raspberry Pi blog and home of the BerryClip Add-on board : http://www.raspberrypi-spy.co.uk/
Follow me on Google+, Facebook and Twitter (@RPiSpy)
User avatar
Posts: 483
Joined: Tue Jan 10, 2012 8:48 pm
Location: UK
by timhunderwood » Mon Nov 05, 2012 1:02 pm
Thanks,

Will it be possible to have more than 1 official camera module attached? I know one can't be sure but is it going to be released in weeks or months?

So there isn't a specific webcam from that list that just works out of the box ? To clarify I only really need to take screenshots rather than video.

Out of interest, what is it about the pi compared to a normal computer running linux that makes a webcam peripheral so hard to use?

Cheers,

Tim
Posts: 11
Joined: Fri Aug 31, 2012 10:42 am
by obcd » Mon Nov 05, 2012 2:06 pm
USB The Elephant....makes it difficult to use a webcam.
The camera module from the foundation won't use usb.
Posts: 890
Joined: Sun Jul 29, 2012 9:06 pm