#include <LiquidCrystal_I2C.h>

// inisialisasi lcd dengan alamat 0x27, 16 kolom, dan 2 baris
LiquidCrystal_I2C lcd(0x27, 16, 2);

// deklarasi pin
#define nilaisensor 34 // pin analog
#define BUZZER_PIN 25
#define redled 16
#define yelled 17
#define greled 18
// deklarasi variabel pada sensor
float analogValue;
float hasilSensor;

void setup() {
  // inisialisasi lcd
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("   Kelompok 4");
  lcd.setCursor(0,1);
  lcd.print("Pendeteksi Hujan");
  delay(5000);
  lcd.clear();

  // inisialisasi pin
  pinMode(nilaisensor, INPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(redled,OUTPUT);
  pinMode(yelled,OUTPUT);
  pinMode(greled,OUTPUT);
  // inisialisasi serial monitor dengan baud rate 9600
  
}

void loop() {
  // baca nilai analog dari sensor
  analogValue = analogRead(nilaisensor);
  hasilSensor = analogValue/4095*100;

  // menampilkan nilai sensor pada serial monitor
  Serial.begin(9600);
  Serial.print("Jumlah air yang diterima: ");
  Serial.println(hasilSensor);

  // baris 1 lcd i2c
  lcd.setCursor(0, 0);
  lcd.print("Jml Air: ");
  lcd.print(hasilSensor);
  lcd.setCursor(14, 0);
  lcd.print("%");

  // baris 2 lcd i2c
  lcd.setCursor(0, 1);
    // jika sensor mendeteksi hujan
  if (hasilSensor >= 45) {
    lcd.print("Hujan Deras");
    digitalWrite(BUZZER_PIN, HIGH);
    digitalWrite (redled, HIGH);
    digitalWrite (yelled, LOW);
    digitalWrite (greled, LOW);
    
    // jika sensor mendeteksi gerimis
  } else if ( 10 < hasilSensor < 45){
    lcd.print("Gerimis");
    digitalWrite(BUZZER_PIN, HIGH);
    digitalWrite(yelled, HIGH);
    digitalWrite (greled, LOW);
    digitalWrite (redled, LOW);

    // jika sensor tidak mendeteksi air
  } else {(hasilSensor == 0);
    lcd.print("Cerah");
    digitalWrite(BUZZER_PIN,LOW);
    digitalWrite(greled, HIGH);
    digitalWrite (redled, LOW);
    digitalWrite (yelled, LOW);
    
  }

  // tunggu 250 milidetik
  delay(250);
  lcd.clear();
}