The OpenServo does not ship with any enabled PID settings, and out of the box will not move when commanded. Follow the guide below to change your settings to allow for fast and accurate movement.

You can tune the response of OpenServo output by changing the PID values.

PID is algorithm used within the OpenServo to control the accuracy of movement, minimise the servo overshooting the destined position and settle time.

At the time of writing, the OpenServo only enables the P and D terms of the movement algorithm to minimise potential problems, and to enable faster tuning.

Please follow the Manual Tuning guide on the link below, ignoring references to Integral (Integrator) term.

http://en.wikipedia.org/wiki/PID_controller#Loop_tuning

If you wish to write your own application, and control the OpenServo with your own software, you may be interested in the APIServoConfigPID guide.