#include <LiquidCrystal.h>

// Initialize LCD
const int  rs =5, en =18, d4 =4, d5 =0, d6 =2, d7=15;
LiquidCrystal lcd(5, 17, 18, 4, 0, 2, 15);

// Define LDR and LED pin
const int thermometerPin = 25;//represented by a potentiometer
int LED = 21;

// Define threshold value
const int Threshold = 813 ; // declare in maximum temperature(kelvins)

void setup() {
  int tempValue = analogRead(thermometerPin);//read themometer
const int Threshold =813 ;
  // Set up the LCD
  Serial.begin(9600);
  lcd.begin(16, 2);
  lcd.clear();

  // Set LED pin as output
  pinMode(25, INPUT);
  pinMode(21, OUTPUT);

  // Print initial messages on LCD
  lcd.setCursor(0, 0);
  lcd.print("THERMO(K):");
  lcd.setCursor(0, 1);
  lcd.print("");
    lcd.setCursor(0, 1);
  lcd.print("Threshold(k): 813  ");
  lcd.setCursor(0, 2);
  lcd.print("ThermoMeter(k): "); //set value read by thermometr @ line 3
  lcd.setCursor(8,3);

  lcd.setCursor(0, 3);
  lcd.print("SYSTEM:");//set stystem reort @ line 4

}

void loop() {
  // Read the LDR value
   int tempValue = analogRead(thermometerPin);//read themometer
  int mappedValeu = map(thermometerPin,0,1023,0,900);//thermometer value kelvins
 int ThermoMeter = analogRead(thermometerPin);
 lcd.setCursor(16,2);
 lcd.print(tempValue);
  // Display LDR value on LCD
 

  // Check if light intensity falls below threshold
  if (tempValue > Threshold) {
    // Turn on LED
    digitalWrite(LED, HIGH);
    lcd.setCursor(7, 4);
    lcd.print("STOP");
  } else {
    // Turn off LED
    
    digitalWrite(LED, LOW);
    lcd.setCursor(7, 4);
    lcd.print("SAFE");
  }

  delay(500); // Adjust delay time as needed
}
//LINK REFERENCE https://www.youtube.com/watch?v=gNEYa1qNdX8