If the pulse is shorter than 1.5 ms, the motor will turn the shaft to close to 0 degrees. If the pulse is longer than 1.5ms, the shaft turns closer to 180 degrees. The circuit is designed to give ...

Unhappy with the 120 degree range of movement for this digital servo motor [Malte] set out to ... This is what that control circuit measures in order to judge the position of the servo horn.