Hi i m doing a self balancing bipedal walking robot for my final year engineering project..I m using 6 servomotors from nex robotics and controlling them using atmega128 microcontroller.. the motors were working fine until recently.. They are giving jerky movements even for one stationary position command. i cant understand why?? is it cos of the power supply??i m using 5v 1A or 2A adapters.. Also i dunno how to measure the current drawn by the motors? Pls help me out