#include <Servo.h>
Servo abdul;
int trig=2;
int echo=3;
long durasi, jarak;
int merah =8;


void setup() {
pinMode(merah, OUTPUT);
pinMode(trig, OUTPUT);
pinMode(echo, INPUT);
Serial.begin(9600);
abdul.attach (11);
}

void loop() {
  
  digitalWrite(trig, LOW);
  delayMicroseconds(8);
  digitalWrite(trig, HIGH);
  delayMicroseconds(8);
  digitalWrite(trig, LOW);
  delayMicroseconds(8);
  
  durasi=pulseIn(echo,HIGH);
  jarak=(durasi/2)/29.1;
  Serial.println(jarak);

  if(jarak >50){
  abdul.write(90);
  }
else{
  abdul.write(0);
  }

  digitalWrite(merah,HIGH);
  delayMicroseconds(1000);
  digitalWrite(merah, LOW);
  delayMicroseconds(1000);
  }