I am trying to attach three webcams to my RPi-2 as it comes with 4 USB. With one webcam everything works fine, when I added the second one, the frame rate of both webcams dropped but things were working fine, then I added the third one it worked fine and capture was happening with slightly low frame rate which is OK to me, If I continuously do a capture using the three web cams they do capture after sometime, I noticed that the whole RPi is not accessible over network. I can even ping the device, but three webcams continuous to capture frame. Not sure why this is happening can anyone give me clue to debug and solve this problem.
Has this something to with DMA of USB ports ?
Has anyone tried using three webcams on RPi-2 ?