#include <Servo.h>
#define bz 1
#define led 0
Servo servo;  



void setup() {
  Serial.begin(9600);
  servo.attach(2);
  tone(bz, OUTPUT);
  pinMode(led, OUTPUT);
}

void loop() {

  for (int pos = 0; pos <= 90; pos ++) {
    servo.write(pos);
    digitalWrite(bz, HIGH);
    digitalWrite(led, HIGH);
    Serial.println("nyala kurang dari 90");
    delay(100);                       
  }
  for (int pos = 90; pos >= 0; pos --) { 
    servo.write(pos);   
    digitalWrite(bz, LOW);   
    digitalWrite(led, LOW);
    Serial.println("nyala lebih dari 0");       
    delay(100);                     
  }

}