// Rizqi Akbar Pratama Buana : Monitoring level air
// menggunakan sensor ultrasonik berbasis blynk

#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL6HvWw-ry5"
#define BLYNK_TEMPLATE_NAME "Sensor Pendeteksi Air"
#define BLYNK_AUTH_TOKEN "8nLmMVanqXVlupZqk-3mpZUXOAYOTy2p"

#include <WiFi.h>
#include <Wire.h>
#include <BlynkSimpleEsp32.h>


char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST"; 
char pass[] = "";

#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);
  
  Serial.print("Jarak: ");
  Serial.print(jarak);
  Serial.println(" cm");

  if(jarak > 80){
    digitalWrite(LED1, HIGH);
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, LOW);

   
  }else if(jarak <= 80 && jarak >= 40){
    digitalWrite(LED2, HIGH);
    digitalWrite(LED1, LOW);
    digitalWrite(LED3, LOW);
    

  }else if(jarak < 40){
    digitalWrite(LED3, HIGH);
    digitalWrite(LED2, LOW);
    digitalWrite(LED1, LOW);
  }
    
}