Servo motors are great devices that can turn to a specified position. They have a servo arm that can turn 180 degrees.
Arduino, we can command servo to go to a specified position and it will go there. As simple as that! Servo motors were first used in the Remote Control (RC) world, usually to control the steering of RC cars or the flaps on a RC plane. With time, they found their uses in robotics, automation, and of course, the Arduino world.