Originally Posted by wabbalee
when I quickly calculate the rate at which you want it to be captured, I come at 22,5Mb/s. Which is not quiet the maximum throughput of usb 2.0 but close enough;
Ah yes, I should comment on this a little.
The camera capture programs (corander) actually saves to a ramdisk. Another process actually moves the files from the ramdisk to **two** USB2 drives, alternating between them. It writes up to 900 images per directory, then creates another directory.
In an experiment, I had a SATA (1.5Gbs) cardbus card that I plugged into the system and was able to save directly to same, although it was dropping the off frame (haven't tried yet doing the same thing via the ramdisk as described above).
I can actually do that with two cameras (one at 15Hz, the other at 30Hz), with two instances of coriander, each saving to a different SATA drive as a proof of comcept.
It was formatted FAT32 so that (at the time) it could be directly read by anyone with Windows, but that's no longer the issue, so I'm too see if there is anything better for the same purpose.
These cameras can run for an hour or more at time and can capture enormous amounts of data - it was close to 200GB in our last field test.