#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int sensorPin = 0; 
//RGB pins
int red_light_pin= 9;
int green_light_pin = 7;
int blue_light_pin = 8;
void setup()
{
  lcd.begin(16, 2);
  //RGB setup
  pinMode(red_light_pin, OUTPUT);
  pinMode(green_light_pin, OUTPUT);
  pinMode(blue_light_pin, OUTPUT);
}
void loop()                     
{
lcd.clear();
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;
lcd.print(temperatureF); 
lcd.println(" degrees F ");
lcd.setCursor(0,1);
lcd.print(temperatureC);
lcd.println(" degrees C ");
delay(1000);
  if(temperatureC >= -45 && temperatureC <= -20){
  RGB_color(0, 0, 128); // Navy
  delay(1000);
  }
  if(temperatureC >= -21 && temperatureC <= 0){
  RGB_color(0, 128, 128); // Teal
  delay(1000);
  }
  if(temperatureC >= 1 && temperatureC <= 20){
  RGB_color(128, 128, 0); // Olive
  delay(1000);
  }
  if(temperatureC >= 21 && temperatureC <= 50){
  RGB_color(0, 255, 0); // Green
  delay(1000);
  }
  if(temperatureC >= 51 && temperatureC <= 74){
  RGB_color(255, 255, 0); // Yellow
  delay(1000);
  }
  if(temperatureC >= 75 && temperatureC <= 100){
  RGB_color(255, 169, 0); // Orange
  delay(1000);
  }
  if(temperatureC >= 101 ){
  RGB_color(255, 0, 0); // Red
  delay(1000);
  }
}
void RGB_color(int red_light_value, int green_light_value, int blue_light_value)
 {
  analogWrite(red_light_pin, red_light_value);
  analogWrite(green_light_pin, green_light_value);
  analogWrite(blue_light_pin, blue_light_value);
}