green2005 wrote:
looks like it is fixed, tried diffirent usb ports and now getting good results with 60fps,640x and 4 ps3 cams..sometimes dropping 1-2 frames , i think will be need usb 3.0 hubs or something like it with 6 cams
I'm guessing you had more than two cameras running off a single controller. It's hard to tell which ports are associated with which controllers and sometimes the only way to find out is to try different port configurations. Just to be clear, you can only have two cameras connected to each controller, and most desktop computers only have two controllers regardless of how many physical ports are available.
This means if you have six cameras, you will almost certainly need to add a USB controller card. You can use a USB 2.0 or 3.0 card, it really doesn't matter, but you should know that a USB 3.0 will do nothing to improve the performance of a PS3 Eye camera because it's a USB 2.0 device. That said, it doesn't hurt to have a USB 3.0 card and you may be glad you have one so you can use USB 3.0 devices. For example, I use a USB 3.0 card and exteral USB 3.0 hard drive to capture Kinect data from an old laptop; I cannot do this on this laptop with an ordinary USB 2.0 drive.
On my workstation, which has two built in controllers plus a USB 3.0 controller card, I can use six PS3 Eye cameras. However, I had to add an internal SSD to be able to capture this data without dropping frames.
Hope this info helps. You can learn more about this topic in the iPi Wiki.
G.
