The SparkFun Servo Trigger is a small robotics board that simplifies the control of hobby RC servo motors. When an external switch or logic signal changes state, the Servo Trigger is able to tell an attached servo motor to move from position A to position B.
Quite happy with this board, the adjustability is super handy. One thing to note is that this is for ANALOG servos only, not the new digital kind. So that limits the servos it can work with, but still good. 90 degree rotation max.