I just Remixed a view existing Parts for havin a holder for the Playstation Eye (PS3 Cam) on the I3 Mega,
Please Print Knob 2 Times. You need two M5 Nuts and two M5x25 Screws.
I used a 3x19mm tapping screw to mount the round adapter on the arm.
Print with Support for the Cam Holder.
You need 2 M5 Bolts and 2 M5x25 Screws.