|
Posted by Padu on April 6, 2006, 3:44 pm
> Thank you for your feedback, Padu.
> A regular webcam uses USB. Isn't this the hard way? I was actually more
> thinking about a CMOS Image Sensor. (I guess that's what inside one of
> those webcams) That would be easier and cheaper to use, no?
I don't know about cheaper. Webcams are very cheap these days. Yes, they are
USB (with a couple of firewire exceptions), and there are plenty of
libraries for dealing with images from USB cameras using either directX
(directShow) or WDM streaming. Take a look here for one example:
http://www.robin-hewitt.com/framecap/
> But it doesn't have to be a CMOS image sensor per se. I am just looking
> for something that is easy to connect to my circuit. Is a webcam
> easier? (I don't know).
For one of my robots, I'm using a CCD "boxy" firewire camera. The nice thing
about it is that the manufacturer provides the API to talk directly with the
camera, but these are more expensive ones (from $400 to $4000, withouth
lens)
> Maybe I should make things a bit more clear:
> The camera should be connected to the clock, and the clock is connected
> to the pc. In other words, the camera is not directly connected to the
> pc. That is because I would like to extend the project in a later stage
> and make it a standalone clock. the clock would then save the pictures
> on a FlashCard for example.
On that matter, some cameras have a trigger input. When they see a signal in
this port, they capture one frame with very small latency. If you are not
connecting the camera to the pc, then you'll probably have to worry about
interfacing the image with your circuitry... not a trivial task.
> Did anybody try this before? Or can anybody advice me a certain camera
> or a certain image sensor, etc...
What price range are you looking into? There are too many options.
Cheers
Padu
| 
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML site map
> I am looking for a cheap camera for a chess-clock project. I would like
> to use these camera's to take a single picture every time somebody
> presses the clock. These images would be send to a pc using a serial or
> usb cable.
> Does anybody know a cheap camera that is simple to use for projects
> like this?
> Thank you in advance
> BramGo