//CODING SOLAR TRACKING SYSTEM MENGGUNAKAN ARDUINO UNO

//HEADER---------------------------------
#include <Servo.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
//---------------------------------------

//DEFINISI VARIABEL----------------------
LiquidCrystal_I2C lcd(0x27, 16, 2);

Servo myservo;

int Ldr1 = A0;
int Ldr2 = A1;
int Ldr3 = A2;
int Ldr4 = A3;

int LED1 = 6;
int LED2 = 5;
int LED3 = 4;
int LED4 = 3;
int LED5 = 2;
//----------------------------------------

//VOID SETUP------------------------------
void setup() {
  Serial.begin(9600);
  pinMode(Ldr1, INPUT);
  pinMode(Ldr2, INPUT);
  pinMode(Ldr3, INPUT);
  pinMode(Ldr4, INPUT);

  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);
  pinMode(LED5, OUTPUT);

  myservo.attach(11);
  myservo.write(90);

  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("SOLAR TRACKING");
  lcd.setCursor(0, 1);
  lcd.print("FT-UM SUMBAR");
  delay(1000);
  lcd.clear();
}
//----------------------------------------

//VOID LOOP---------------------------------------
void loop() {
  String statusLed;
  int Aldr1 = analogRead(Ldr1);
  int Aldr2 = analogRead(Ldr2);
  int Aldr3 = analogRead(Ldr3);
  int Aldr4 = analogRead(Ldr4);

  int Map1 = map(Aldr1, 8, 1015, 90, 0);
  int Map2 = map(Aldr2, 8, 1015, 90, 0);
  int Map3 = map(Aldr3, 8, 1015, 90, 0);
  int Map4 = map(Aldr4, 8, 1015, 90, 0);

  int sudut = ((Map1 + Map2)-(Map3 + Map4)) + 90;
    // MEMASTIKAN SUDUT KURANG DARI 0
  if (sudut < 0) {
    sudut = 0;
  }
  // MEMASTIKAN SUDUT TIDAK LEBIH DARI 180
  if (sudut > 180) {
    sudut = 180;
  }

  digitalWrite(LED5, sudut >= 0 && sudut < 36);
  digitalWrite(LED4, sudut >= 36 && sudut < 72);
  digitalWrite(LED3, sudut >= 72 && sudut < 108);
  digitalWrite(LED2, sudut >= 108 && sudut < 144);
  digitalWrite(LED1, sudut >= 144 && sudut <= 180);

  lcd.setCursor(0, 0);
  lcd.print("Sudut: " + String(sudut) + "  ");
  lcd.setCursor(0, 1);
  lcd.print("LED: ");
  if (digitalRead(LED1)) lcd.print("1 ");
  if (digitalRead(LED2)) lcd.print("2 ");
  if (digitalRead(LED3)) lcd.print("3 ");
  if (digitalRead(LED4)) lcd.print("4 ");
  if (digitalRead(LED5)) lcd.print("5 ");
  delay(100);
  myservo.write(sudut);
  delay(100);
}
//-----------------------------------------------