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Looking for a webcam interface for microcontrollers

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suwaii

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can any give circuit or project to interface webcam with a microcontrollers

to digitize the imge that come form webcam

i look for it in the internet and i never find it
 

web cam interface

I'm looking for it, too. I'd like connect my webcam to a Pic as 18F4550 with usb and than send an image over internet by ENC28j60... If I will get news I will post them! You too. Bye to everybody.
 

webcam interface circuit

You will need a usb host, fast controller and drivers :)

driver implement is hard work .... it depends by webcam model
 

Re: webcam interface

Hi ,
I done this project , I can stream picture throught internet. I can advise u but can't post source code.

This is my device
USB Host ISP1362 + ARM7 LPC21xx + MIcrochip SPI RAM
to able to get Camera stream
1)you have to initialize camera regarding of each manufacturer
you have to send command via USB Control pipe on Host controller.
-- see function usb_control_msg >> in linux driver
2)You have to setup ISO IN Transfer buffer , set PTD header on ISO MEM , FRAME NUMBER ,Packet size to same as ISO MAX PACKET SIZE OF WEB CAM
3)ISO IN taken every 1ms to get USB Streamming
4)Every packet of streamming you have to decode start of frame of jpeg stream
this is regarding of each WEBCAM Manufacture but if webcam is suport UVC there is standard in USB.org website
5)if you know where is first frame then you can put jpeg stream into SPI RAM
6)then you can stream to ethernet
for more infomation pls you can see in USB Host Programming guide
sorry for may not best to explain in english

sk,:D
 
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