#include <LiquidCrystal_I2C.h> // address, width, height
#include <DHT.h>
#include <Adafruit_Sensor.h>

#define DHTPIN 35    // Pin data DHT11 terhubung ke pin 3
#define DHTTYPE DHT22   // Tipe sensor DHT (DHT22)
#define RelayModule 14

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);
int trigPin = 2;
int echoPin = 4; 
long duration; //time taken 
int panjangCM;
int h; //calculate jarak




void setup() {
  
  lcd.init();
  lcd.backlight();
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(RelayModule, OUTPUT);

  Serial.begin(9600);
  dht.begin();
}

void loop() {
  //HC-SR04
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(1);
  digitalWrite(trigPin, LOW);
  duration=pulseIn(echoPin, HIGH);
  panjangCM= duration*0.0342/2;
  h = 74.57 - panjangCM;
  lcd.setCursor(0,0);
  lcd.print("HASIL=");
  lcd.print(panjangCM);
  lcd.print("Cm");
  lcd.setCursor(0,1);
  lcd.print("\t");
  lcd.print("tinggi Air:");
  lcd.print(h);
  lcd.println(" Cm");
  delay(2000);
  lcd.clear();

  delay(2000); // Tunggu 2 detik antara pembacaan

  //DHT11

  float humidity = dht.readHumidity(); // Baca kelembaban
  float temperatureC = dht.readTemperature(); // Baca suhu dalam Celsius
  float temperatureF = dht.readTemperature(true); // Baca suhu dalam Fahrenheit (true)

  // Periksa jika pembacaan sukses
  Serial.print("T:");
  Serial.print(temperatureC);
  Serial.print("C");
  Serial.print("H:");
  Serial.print(humidity);
  delay (1000);

  if(temperatureC>28);{
    digitalWrite(RelayModule, HIGH);
delay(5000);

  }
  if(temperatureC<=28 && temperatureC>=21);{
    digitalWrite(RelayModule, LOW);
delay(5000);
  }

}