#include <Servo.h>
#define triger 7
#define echo 6
#define led 8
#define buz 10

int jarakMax = 400;
int jarakMin = 00;
int waktu, jarak;
Servo servoku;

void setup()
{
  Serial.begin(9600);
  servoku.attach(9);
  pinMode(echo, INPUT);
  pinMode(triger, OUTPUT);
  pinMode(led, OUTPUT);
}

void loop()
{
  digitalWrite(triger, LOW);                   
  delayMicroseconds(2);
  digitalWrite(triger, HIGH);                  
  delayMicroseconds(10);
  digitalWrite(triger, LOW);
  waktu = pulseIn(echo, HIGH);                  

  jarak = waktu/58.2;

  if(jarak>=jarakMax || jarak<=jarakMin){
    Serial.println("diluar jangkauan");
    digitalWrite(led, HIGH);
    servoku.write(90);
    delay(500);
  }else{
    Serial.println(jarak);
    digitalWrite(led, LOW);
    servoku.write(0);
    delay(200);
    tone(buz, 6, 500);
    tone(buz, 66, 1000);}
}