Sourcing servos and controller from same power supply
I'm using dagu spider controller with servo shield & servos consuming about 3,5A in total. If I supply both controller & shield from same source, whole system don't work - servos just jerk, but don't move. Power supply can source 20A max. But if I connect controller to separate power supply, everything works as expected. I thought that it's just a question of max current that power supply can provide. Isn't it correct?