// Batara novriadii, ariyandicipta : Monitoring level air
// menggunakan sensor ultrasonik berbasis blynk

#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#define BLYNK_TEMPLATE_ID "TMPL6qCd4nVex"
#define BLYNK_TEMPLATE_NAME "MonitoringWater"
#define BLYNK_AUTH_TOKEN "4KqZlGnbXim316evRSEA_HOE2uEkDR_q"
char auth[] = "6uiwhUZedJRsiKPZPrk8GIf1S6FTGgKT";
char ssid[] = "Wokwi-GUEST"; //nama hotspot yang digunakan
char pass[] = ""; //password hotspot yang digunakan

#define triggerPin 2
#define echoPin 15
#define LED1 25
#define LED2 26
#define LED3 27
long durasi;
int jarak;

void setup() {
  Blynk.begin(auth, ssid, pass);
  {
    Serial.print(".");
    delay(500);
  }
pinMode(triggerPin, OUTPUT); 
pinMode(LED1, OUTPUT); 
pinMode(LED2, OUTPUT); 
pinMode(LED3, OUTPUT); 
pinMode(echoPin, INPUT);
  
Serial.begin(9600); 
}

void loop() {
  Blynk.run();
  digitalWrite(triggerPin, LOW);
  delayMicroseconds(2);
  digitalWrite(triggerPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(triggerPin, LOW);
  durasi = pulseIn(echoPin, HIGH);
  jarak = durasi*0.034/2;
  Blynk.virtualWrite(V3, jarak);
  
  
  if(jarak > 80){
    Serial.println("Jarak lebih dari 80cm");
    digitalWrite(LED1, HIGH);
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, LOW);

   
  }else if(jarak <= 80 && jarak >= 40){
    Serial.println("Jarak berada diantara 40cm hingga 80cm");
    digitalWrite(LED2, HIGH);
    digitalWrite(LED1, LOW);
    digitalWrite(LED3, LOW);
    

  }else if(jarak < 40){
    Serial.println("Jarak kurang dari 40cm");
    digitalWrite(LED3, HIGH);
    digitalWrite(LED2, LOW);
    digitalWrite(LED1, LOW);
}
    
  }