#include <LiquidCrystal.h>

int sensorPin = 0;
int ledGreenPin = 2;
int ledBluePin = 1;
int ledRedPin = 3;

const int rs = 10, en = 9, d4 = 8, d5 = 7, d6 = 6, d7 = 5;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup() {
  lcd.begin(16, 2);
  pinMode(ledGreenPin, OUTPUT);
  pinMode(ledBluePin, OUTPUT);
  pinMode(ledRedPin, OUTPUT);
}

void loop() {  
  int reading = analogRead(sensorPin);
  float voltage = reading * 5.0;
  voltage /= 1024.0; 
  float temperatureC = (voltage - 0.5) * 100 ; 
  float temperatureF = (temperatureC * 9.0 / 5.0) + 32.0;
  
  if (temperatureC >= 35.00){
    digitalWrite(ledRedPin, HIGH);
    digitalWrite(ledGreenPin, LOW);
    digitalWrite(ledBluePin, LOW);
  }else if (temperatureC >= 25.00){
    digitalWrite(ledRedPin, LOW);
    digitalWrite(ledGreenPin, LOW);
    digitalWrite(ledBluePin, HIGH);
  }
  else if (temperatureC <= 25.00){
    digitalWrite(ledGreenPin, HIGH);
    digitalWrite(ledBluePin, LOW);
    digitalWrite(ledRedPin, LOW);
  }
 
  
  lcd.setCursor(0, 0);
  lcd.print(temperatureC);
  lcd.print((char)223);
  lcd.print("C");
  lcd.setCursor(0, 1);
  lcd.print(temperatureF);
  lcd.print((char)223);
  lcd.print("F");
}