5 network cards sounds interesting
To record a 3D movement track you need 3 fast cameras. One for each axis( X, Y, Z). These cameras mostly have a GIGE interface, which is about 1Giga-lan. Each camera needs a network connection to transfer the data for 80,000 lines with 2000 pixels per second. No problem, there are 4 channel network cards for a good price.
1. Card for X-Camera
2. Card for Y-Camera
3. Card for Z-Camera
4. Card for synchronise Led's (with a PIC32)
5. Card to use Internet to go to the Matrix forum