#include <LiquidCrystal_I2C.h>
#include <Wire.h>

int ledRed = 11;
int ledYellow = 12;
int ledGreen = 13;
int temperature = A3;
const float BETA = 3950;

LiquidCrystal_I2C lcd(0x27, 16, 2);


void setup() {
  // put your setup code here, to run once:
  pinMode(ledRed, OUTPUT);
  pinMode(ledYellow, OUTPUT);
  pinMode(ledGreen, OUTPUT);

  Serial.begin(9600);

  lcd.init();
  lcd.backlight();
  lcd.setCursor(0,1);
  lcd.print("Ready");
  delay(700);
  lcd.clear();
  lcd.backlight();
  lcd.setCursor(0,1);
  lcd.print("Temperature:");
  lcd.setCursor(1,1);
  lcd.print("State:");

}

void loop() {
  // put your main code here, to run repeatedly:
  int analogValue = analogRead(A3);
  float celzija = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  Serial.print("Temperatura: ");
  Serial.print(celzija);
  Serial.println("°C");
  delay(700);
  

  if (celzija < 0) {
    digitalWrite(ledRed, HIGH);
    digitalWrite(ledYellow, LOW);
    digitalWrite(ledGreen, LOW);
    Serial.println("Cold!");
    lcd.clear();
    lcd.backlight();
    lcd.setCursor(0,1);
    lcd.print()
  }

  else if (celzija > 0 && celzija <= 50) {
    digitalWrite(ledRed, LOW);
    digitalWrite(ledYellow, HIGH);
    digitalWrite(ledGreen, LOW);
    Serial.println("Cool");
  }

  else if (celzija > 50) {
    digitalWrite(ledRed, LOW);
    digitalWrite(ledYellow, LOW);
    digitalWrite(ledGreen, HIGH);
    Serial.println("Hot!");
  }

  else {
    digitalWrite(ledRed, LOW);
    digitalWrite(ledYellow, LOW);
    digitalWrite(ledGreen, LOW);
    Serial.println("Error...");
  }
}