#include <DHT.h>

#define DHTPIN 15
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
#define mqPin (32) 
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
int led_2 (18);
int led_1 (5);
#define buzzer (25)

float suhu;
float kelembapan;

void setup() {
  Serial.begin(115200);
  dht.begin();
  pinMode(mqPin, INPUT);
  pinMode(led_2, OUTPUT);
  pinMode(led_1, OUTPUT);
  lcd.init();
  lcd.backlight();
}

void loop() {
  float suhu = dht.readTemperature();
  float kelembapan = dht.readHumidity();
  int analogSensor = analogRead(mqPin);


  Serial.print("Nilai Suhu Terbaca: " + String(suhu));
  Serial.print(" ");
  Serial.print("Nilai Kelembapan Terbaca: " + String(kelembapan));
  delay(500);
  Serial.print(" ");
  Serial.print("Output MQ-2: ");
  Serial.println(analogSensor);

  if (analogSensor > 1500)
  {
    digitalWrite(led_2, HIGH);
    digitalWrite(led_1, LOW);
    tone(buzzer, 5000, 200);
  }
  else
  {
    digitalWrite(led_2, LOW);
    digitalWrite(led_1, HIGH);
    noTone(buzzer);
  }

   lcd.setCursor(0,0);
   lcd.print("Suhu:");
   lcd.print(suhu);
   lcd.print("*C");
   lcd.setCursor(9,0);
   lcd.print("A:");
   lcd.print(analogSensor);
   lcd.setCursor(0,1);
   lcd.print("Humi: ");
   lcd.setCursor(7,1);
   lcd.print(kelembapan);
   lcd.setCursor(14,1);
   lcd.print("%");
}