Hi,Welcome to the forum.Please read the first post in any forum entitled how to use this forum.http://forum.arduino.cc/index.php/topic,148850.0.html .Can you please post a copy of your circuit, in CAD or a picture of a hand drawn circuit in jpg, png?Thanks .. Tom... :)
I think you have missed the fact that a PCA9685 can't/doesn't POWER anything.It just provides the control signals for the servos.Power (the 2-way screw terminal) is NOT connected to the PCA9685 at all,but goes directly to the power rows of the servos.On the Adafruit boards through a reverse protection mosfet, no mosfet on the clones.Only power/signal grounds are shared ofcourse.The power traces on the Adafruit/clone boards are rather thin. I wouldn't push to much current over them.You can always connect power (and ground) directly to the servos.Leo..
Let's face it. That is nothing like a schematic is it?Can you try again please. A schematic shows where every connection goes and you groups of unlabelled boxes just doesn't convey anything to me.