Yeh it works great and I'm really pleased. I'm not a programmer, but I managed to develop this in a relatively short time. The camera/computer will be out in the field running off solar power and linked to base using wireless ethernet. The previous developers wasted an awful lot of time trying to write software (Windows) that controlled the camera over a USB-over-ethernet link between the base and the camera. It never worked because the drivers for the camera couldn't cope with a link that was low-quality at times.

I've separated the functions. The computer (an ARM processor) takes the photos and stores them locally on a CF card. The time stamp is gotten from the computer clock which is synchronised using ntpd. And the transfer of photos is done by ftp, which is perfect for a link of variable quality.