// PIN BUZZER
const int buzzer = 11;

// PIN LED
byte lampumalam = 3;
byte airradiator = 2;
byte kipasmobil = 6;

// PINLED RADIATOR
byte led = 13;
byte led1 = 4;
byte led2 = 5;
byte led3 = 7;

int nilai;
int nilai1;
int nilai2;

int Astate = 0;

float temp;

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  lcd.init();
  lcd.init();
  lcd.backlight();

//pin
  pinMode(buzzer, OUTPUT);
  pinMode (led, OUTPUT);
  pinMode (led1, OUTPUT);
  pinMode (led2, OUTPUT);
  pinMode (led3, OUTPUT);

  pinMode (A1, INPUT);
  pinMode (A0,INPUT);
  pinMode (kipasmobil, INPUT);
  pinMode (airradiator, INPUT);
  pinMode (lampumalam, INPUT);

  Serial.begin(9600);

  // AWAL START
  lcd.setCursor(3, 0);
  lcd.print("__ALTIS__");
  lcd.setCursor(3, 1);
  lcd.print("T 1148 BN");
  delay(2000);
  lcd.clear();
  lcd.setCursor(6,0);
  lcd.print("OLEH");
  lcd.setCursor(2,1);
  lcd.print("DWI HARTANTO");
  delay(2000);
  lcd.clear();
  digitalWrite(led3, HIGH);
  delay(50);
  digitalWrite(led3, LOW);


}

void loop() {

// menampiklan tegangan aki
//-------------------------------------------------------------------------
  lcd.setCursor(2, 0);
  lcd.print("TEGANGAN AKI ");
  int sensorValue = analogRead(A0);
  float voltage = sensorValue * (5.0 / 1023.0);
  Serial.println(sensorValue);
  Serial.println(voltage);
  lcd.setCursor(4, 1);
  lcd.print(voltage);
  lcd.setCursor(9, 1);
  lcd.print("Volt");
  delay(2000);
  lcd.clear();
  digitalWrite(led3, HIGH);
  delay(50);
  digitalWrite(led3, LOW);

    // air radiator   * JIKA KELUARAN SENSOR POSITIF
    //-------------------------------------------
   nilai = digitalRead(airradiator);
    if (nilai == 0) {
      digitalWrite(led, HIGH);
      Serial.println("di tekan");
      lcd.setCursor(2, 0);
      lcd.print("AIR RADIATOR");
      lcd.setCursor(5, 1);
      lcd.print("KOSONG");
      lcd.backlight();
      digitalWrite(buzzer,HIGH);
      delay(1000);
      lcd.clear();
      lcd.noBacklight();
      delay(500);
      lcd.backlight();
      lcd.setCursor(2,0);
      lcd.print("***SEGERA*** ");
      lcd.setCursor(2,1);
      lcd.print("**DI - ISI**");
      delay(500);
      //lcd.noBacklight();
      digitalWrite(buzzer, LOW);
      delay(2000);
      lcd.clear();
      digitalWrite(led3,HIGH);
      delay(50);
      digitalWrite(led3, LOW);

    }

    else {

  digitalWrite(led, LOW);
  lcd.setCursor(2, 0);
  lcd.print("AIR RADIATOR");
  Serial.println("di lepas");
  lcd.setCursor(4, 1);
  lcd.print(" PENUH");
  delay(2000);
  lcd.clear();
  digitalWrite(led3, HIGH);
  delay(50);
  digitalWrite(led3, LOW);
    }

      // mematikan led saat malam hari
      nilai1 = digitalRead(lampumalam);
      if(nilai1==0){
      digitalWrite(led1, HIGH);
      Serial.println("siang");
      lcd.backlight();
      lcd.display();
      }
      else if(nilai == 0){
        //lcd.clear();
        //delay(500);
        lcd.backlight();
        lcd.display();
        //lcd.setCursor(6,0);
        //delay(500);
      }
    else {
      digitalWrite(led1,LOW);
      Serial.println("malam");
      lcd.noBacklight();
      lcd.noDisplay();
      delay(1000);
      lcd.clear();
      digitalWrite(led3, HIGH);
      delay(50);
      digitalWrite(led3, LOW);
    }

  // -----------------temp mesin----------------------------------------------------
  
  Astate = analogRead(A1);
  temp=(Astate-799)/(-11.5);
  Serial.print("temperature mesin:");
  //Serial.println(Astate);
  Serial.println(temp);
  //lcd.setCursor(7, 1);
  //lcd.print(Astate);
  lcd.setCursor(3,0);
  lcd.print("SUHU MESIN");
  lcd.setCursor(5, 1);
  lcd.print(temp);
  //delay(1000);
  //557=21k+b
  //684=10k+b
  //k=(684-557)/(-11)=-11.5   b=799
  delay(2000);
  lcd.clear();
  digitalWrite(led3, HIGH);
  delay(50);
  digitalWrite(led3, LOW);


//-------CHECK KONDISI KIPAS PENDINGIN ----
      nilai2 = digitalRead(kipasmobil);
      if(nilai2==0){
      digitalWrite(led2, HIGH);
      Serial.println("kipas nyala");
      lcd.setCursor(0,0);
      lcd.print("KIPAS PENDINGIN");
      lcd.setCursor(6,1);
      lcd.print("NYALA");
      delay(2000);
      lcd.clear();
      digitalWrite(led3, HIGH);
      delay(50);
      digitalWrite(led3, LOW);
      }
    else {
      digitalWrite(led2,LOW);
      Serial.println("kipas mati");
      delay(50);
      lcd.setCursor(0,0);
      lcd.print("KIPAS PENDINGIN");
      lcd.setCursor(6,1);
      lcd.print("MATI");
      delay(2000);
      lcd.clear();
      digitalWrite(led3, HIGH);
      delay(50);
      digitalWrite(led3, LOW);
    }
}