#include <Servo.h>

Servo myservo;

int potensionpin = 0;
int ledpin = 4;

int val;

void setup(){
  myservo.attach(2);
  pinMode(ledpin, OUTPUT);
}
void loop(){
  val = analogRead(potensionpin);
  val = map(val, 0, 1023, 0, 180);
  myservo.write(val);
  delay(20);
  if (val >90){
    digitalWrite(ledpin, HIGH);
}
  else{
    digitalWrite(ledpin, LOW);
  }

}