#include <LiquidCrystal.h>

// Define LCD pins
const int rs = 13, en = 33, d4 = 21, d5 = 03, d6 = 41, d7 = 40;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

// Define KY-013 pin
const int tempPin = 34;

void setup() {
  lcd.begin(16, 2);  // Initialize the 16x2 LCD
  pinMode(tempPin, INPUT);
}

void loop() {
  // Read analog value from KY-013 sensor
  int rawValue = analogRead(tempPin);

  // Convert raw value to temperature in Celsius
  float voltage = (rawValue / 4095.0) * 3.3;  // ESP32 ADC range 0-4095, 3.3V
  float temperatureC = (voltage - 0.5) * 100.0;  // Example calculation, adjust if needed

  // Display temperature on the LCD
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(temperatureC);
  lcd.print(" C");

  delay(1000);  // Update every second
}