#include <Servo.h>

#define ECHO_PIN 7
#define TRIG_PIN 8
#define pinBuzzer 2

Servo  myservo;

void setup() {
  pinMode(TRIG_PIN, OUTPUT);// put your setup code here, to run once:
  pinMode(ECHO_PIN, INPUT);
  pinMode(pinBuzzer, OUTPUT);

  Serial.begin(115200);
  myservo.attach(12);
}

float readDistanceCM() {
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(10);
  digitalWrite(ECHO_PIN, HIGH);
  int duration = pulseIn(ECHO_PIN, HIGH);
  return duration * 0.034 / 2;
}

void loop() {
  float distance = readDistanceCM();// put your main code here, to run repeatedly:
  Serial.println("JARAK SENSOR");

 if (distance <= 200){
   myservo.write(90);
   delay(25);
   tone (pinBuzzer,1000);
   delay(200);
 }
else {
  myservo.write(0);
  noTone(pinBuzzer);
}
}