// include the servo library
#include <Servo.h>

// creates an instance of the servo object to control a servo
Servo myservo;

// declare the control pin for servo motor, call it servoPin
int servopin = A0;
int angle;

void setup() {
  // initialize serial communications
  Serial.begin(9600);

  // attach the servo object to the servoPin
  myservo.attach(3);
}

void loop() {
  // read the analog input
  angle = analogRead(servopin);

  // print it to the serial monitor
  Serial.println(servopin);

  // make a new int called angle - use the map() function to map the range of your sensor to the range of the servo (which is 0 to 179)
angle = map(angle, 0, 1023, 0, 180);
  // move the servo using the angle from the sensor with the servo write() function
  myservo.write(angle);
  delay(20);
}