//library micro servo
#include <Servo.h>
Servo servo;

//define dari sensor ultrasonic
const int TRIG_PIN = 2;
const int ECHO_PIN = 3;

//define dari sensor ultrasonic ke2
const int TRIG_PIN2 = 5;
const int ECHO_PIN2 = 6;

//define LED merah di pin 7
const int LED = 7;

long echotime; 

int jarak = 0;

void setup()
{
  servo.attach(4); 
  
  Serial.begin(9600);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  digitalWrite(TRIG_PIN, LOW);

  pinMode(TRIG_PIN2, OUTPUT);
  pinMode(ECHO_PIN2, INPUT);
  digitalWrite(TRIG_PIN2, LOW);

  digitalWrite(LED,OUTPUT);

}

void loop()

{
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  
  echotime = pulseIn(ECHO_PIN, HIGH);
  
  jarak = 0.034 * echotime / 2; 
  Serial.print("Jarak: ");
  Serial.print(jarak);
  Serial.println(" cm");

  if (jarak < 100) {
    servo.write(90);
  } else {
    servo.write(0); 
  }

  delay(500); 
}

{
  //kodingan inti sensor ajak/ultrasonic
  digitalWrite(TRIG_PIN2, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN2, LOW);
  echotime = pulseIn(ECHO_PIN2, HIGH);
  jarak = 0.0001* ((float)echotime*340.0)/2.0; 
  
  //print hasil bacaan melalui serial monitor
  Serial.print("Jarak: ");

  if (jarak <=10) 
   {
    digitalWrite(LED,HIGH);
    delay(2000);
   } 
  else
   {
    digitalWrite(LED,LOW);
    delay(2000);
   }

}