#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

int input = 0;
int led1 = 8;
int led2 = 9;
int led3 = 10;
int led4 = 11;

void setup() {
  // Init
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  pinMode(A0, INPUT);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led4, OUTPUT);
  // Print something
  lcd.setCursor(3, 0);
  lcd.print("Hello, world!");
  lcd.setCursor(2, 1);
  lcd.print("Wokwi Online IoT");
  lcd.setCursor(5, 2);
  lcd.print("Simulator");
  lcd.setCursor(7, 3);
  lcd.print("Enjoy!");
  lcd.clear();
}


void loop() {
  // lcd.clear();
  lcd.setCursor(15,0);
  lcd.print(input);
  input = analogRead(A0);
  Serial.println(input);
  lcd.setCursor(0, 0);
  lcd.print("Deteksi warna: ");

  if(input >= 100 && input <=250){
    lcd.clear();
    lcd.setCursor(0, 1);
    lcd.print("Warna : Merah"); 
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    digitalWrite(led4, HIGH);
  }else if(input >= 251 && input <=500){
    lcd.clear();
    lcd.setCursor(0, 1);
    lcd.print("Warna : Kuning"); 
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, HIGH);
    digitalWrite(led4, LOW);
  }else if(input >= 501 && input <=750){
    lcd.clear();
    lcd.setCursor(0, 1);
    lcd.print("Warna : Biru"); 
    digitalWrite(led1, LOW);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, LOW);
    digitalWrite(led4, LOW);
  }else if(input >= 751 && input <=1000){
    lcd.clear();
    lcd.setCursor(0, 1);
    lcd.print("Warna : Hijau"); 
    digitalWrite(led1, HIGH);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    digitalWrite(led4, LOW);
  }else{
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    digitalWrite(led4, LOW);
  }
  delay(300);
}