초음파센서 3개를통해 얻은 정보를 앱인벤터 내에 정보를 보내려고하는데
#include <SoftwareSerial.h>
 
SoftwareSerial HC06(2, 3); // RX, TX
int trigPin2 = 4;
int echoPin2 = 5;
int trigPin3 = 6;
int echoPin3 = 7;
int trigPin4 = 8;
int echoPin4 = 9;
 
//변수를 설정합니다. 
long duration2, distance2;
long duration3, distance3;
long duration4, distance4;
 
void setup() {
  pinMode(trigPin2, OUTPUT); // trigPin을 출력으로 
  pinMode(echoPin2, INPUT); // echoPin을 입력이다.
  pinMode(trigPin3, OUTPUT); // trigPin을 출력으로 
  pinMode(echoPin3, INPUT); // echoPin을 입력이다.
  pinMode(trigPin4, OUTPUT);
  pinMode(echoPin4, INPUT);
  Serial.begin(9600); // 시리얼 포트를 시작합니다.
  HC06.begin(9600);
}
int duration = 0;
void loop() {
    digitalWrite(trigPin2, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin2, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin2, LOW);
  duration2 = pulseIn(echoPin2, HIGH);
  distance2= duration2*0.034/2;
 
  if (distance2 >= 500 || distance2 <= 0){
    Serial.println("Out of range");
  }
  else {
    Serial.print("Sensor2 : ");
    Serial.print(distance2);
    Serial.println("cm");
    HC06.println(duration);
  }
  delay(2000);
 
  digitalWrite(trigPin3, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin3, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin3, LOW);
  duration3 = pulseIn(echoPin3, HIGH);
  distance3= duration3*0.034/2;
 
  if (distance3 >= 500 || distance3 <= 0){
    Serial.println("Out of range");
  }
  else {
    Serial.print("Sensor3 : ");
    Serial.print(distance3);
    Serial.println("cm");
  }
  delay(2000);
 
  digitalWrite(trigPin4, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin4, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin4, LOW);
  duration4 = pulseIn(echoPin4, HIGH);
  distance4= duration4*0.034/2;
 
  if (distance4 >= 500 || distance4 <= 0){
    Serial.println("Out of range");
  }
  else {
    Serial.print("Sensor4 : ");
    Serial.print(distance4);
    Serial.println("cm");
    Serial.println("");
  }
  delay(2000);
 
 
}
이렇게 써도 맞는걸까요?