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  #1  
Old 01-17-2008, 02:45 AM
jowie_510 jowie_510 is offline
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Question Interfacing webcam with PIC16877

hello guys..
i still have problem with PIC16877 to interface with web camera. i am going to make the robot that can capture the image surrounding within the range of time. and we can download the picture from webcam to the PC by using the interface circuit . My problem is, i still have no idea to connect any pin of PIC to webcam. If someone know, please let me know..

thanks..
4ur information, i decide to using Matlab programming because it also can do image processing.
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Old 01-17-2008, 06:48 AM
eeboy eeboy is offline
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Where does the PIC come into this? If you are connecting a webcam to a PC to do the image processing I see no need for the PIC.
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Old 01-17-2008, 12:26 PM
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beenthere beenthere is offline
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Don't most webcams use USB to send data to the computer? Why would the PIC be useful?
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Old 01-18-2008, 06:25 AM
jowie_510 jowie_510 is offline
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hi guys..
thanks for ur concern..
actually i am trying to make autonomous robot that can capture picture using webcam and automatically save in MMC. thats y i was try to make it flexible by interface webcam with microcontroller(PIC or if hv any option it also can) . for instance, the robot move forward and take a picture mybe three times and come back. then, the picture can be download from MMC.
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Old 01-18-2008, 11:54 AM
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beenthere beenthere is offline
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As webcams tend to use USB to send the data, there is a large programming overhead associated with managing the interface. There are numbers of small CCD cameras available that simply output the picture scan with no USB overhead. You will have to know how to identify the beginning of each frame to take in a coherent picture, but something like that is mostly having enough memory to soak up all those bits.
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Old 01-19-2008, 11:39 PM
jowie_510 jowie_510 is offline
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thanks beenthere..
i think using CCD also suitable, i nvr thought b4. but the problem is, i try searching the CCD circuit in google but i found nothing. please tell me where i can get the CCD cct and also how CCD connection with PIC16877a and memory card because the image capture need to be save.

thanks again..
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Old 01-20-2008, 01:25 AM
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beenthere beenthere is offline
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It is a Charge Coupled Device camera, not a circuit. Here is a link to one - http://www.web-tronics.com/lowcococcdca.html.

Here is a link to a supplier - http://www.ccdcamera.com/.

This points to the Wikipedia artilce on CCD's, with many more links - http://www.ccdcamera.com/.

This project may be a bit much for a mocrocontroller to handle just from the amount of data that has to be stored per frame.
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Old 01-20-2008, 02:04 AM
nanovate nanovate is offline
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Try looking at the CMU Camera:

http://www.acroname.com/robotics/par...CAM2-PLUS.html

This is an upgraded version of the classic CMUCam:

http://www.seattlerobotics.com/cmucam.htm
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Old 01-20-2008, 02:48 AM
jowie_510 jowie_510 is offline
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i think CCD is like a IC that extend becoming the camera. and if yes, i think it can be connected and controlled by PIC. all the features will be controlled with PIC such as capture the image. And one thing, if we use usb webcam, u said that it need more programing. can u xplain detail...

thanks..
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Old 01-20-2008, 02:59 AM
jowie_510 jowie_510 is offline
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thanks for nanovate for the link about cmu camera..
actually, i try to make low cost project..
thats why, i have trying to finish my project by using webcam..
the ccd camera also suitable, but i need to know how to program this camera to take picture,turning and etc.
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