#include <Servo.h>
Servo servo;
int a, b, c=100;

void setup() {
  // put your setup code here, to run once:
  servo.attach(11);
}

void loop() {
  // put your main code here, to run repeatedly:
  a= analogRead(A5);
  b= map(a, 0, 1023, 0, 180);
  servo.write(b);
  delay(c);
}