#include <Servo.h>

Servo myservo;  // create servo object to control a servo
float value=0;

int pos = 0;    // variable to store the servo position

void setup() {
  myservo.attach(11);  // attaches the servo on pin 9 to the servo object
  pinMode(7, INPUT);
}

void loop() {
  
  value=analogRead(2);
  value=(value/1023)*180;
  myservo.write(value);
}