#define BLYNK_TEMPLATE_ID "TMPL6SO4vqriR"
#define BLYNK_TEMPLATE_NAME "Smoke Detection kel3"
#define BLYNK_AUTH_TOKEN "Ok9BXKEZPJj3xMopDezYak6Uhhz_qyjO"
#define BLYNK_PRINT Serial
#define buzzerPin 13

#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

//Blynk Authentikasi
char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST"; //nama hotspot yang digunakan
char pass[] = "asdfghjklm"; //password hotspot yang digunakan

const int smokeSensorPin = 34;  // Pin analog untuk sensor asap
LiquidCrystal_I2C lcd(0x27, 16, 2); // Alamat I2C dan ukuran LCD

void setup() {
    Serial.begin(115200);  
    delay(100); 
    pinMode(smokeSensorPin, INPUT);
    pinMode(buzzerPin, OUTPUT);
    digitalWrite(buzzerPin, LOW);  // Ensure the buzzer is off initially
  
    Blynk.begin(auth, ssid, pass, "blynk.cloud", 80);
    lcd.init();
    lcd.backlight();
    lcd.setCursor(0, 0);
    lcd.print("Smoke Detector");
    delay(2000);
    lcd.clear();
}

void loop() {
    int smokeLevel = analogRead(smokeSensorPin);
    Blynk.virtualWrite(V4, smokeLevel);  // Mengirimkan data asap ke Virtual Pin V4
    Serial.print("Smoke Level: ");
    Serial.println(smokeLevel);

    int threshold = 900;  // Sesuaikan ambang batas sesuai kebutuhan

    lcd.setCursor(0, 0);
    lcd.print("Smoke Level:    ");
    lcd.setCursor(0, 1);
    lcd.print(smokeLevel);
    
    if (smokeLevel > threshold) {
        Serial.println("Smoke Detected!");
        lcd.setCursor(0, 1);
        // lcd.print("Safe           ");
        digitalWrite(buzzerPin, HIGH);  // Turn ON the buzzer
        delay(1000);
    } else {
        lcd.setCursor(0, 1);
        lcd.print("Safe           !");
        digitalWrite(buzzerPin, LOW);  // Turn OFF the buzzer
        delay(1000);
    }

    delay(1000);  // Delay untuk menghindari pembacaan yang terlalu cepat

    Blynk.run();
}