#include <LiquidCrystal_I2C.h>
const int relay = 18; // Relay control pin on ESP32
int r2=5;
byte b1=26;
byte b2=14;

LiquidCrystal_I2C lcd(0X27,20,2);

void setup() {
  Serial.begin(115200); // Start serial communication
  pinMode(relay, OUTPUT); // Set relay pin as output
  pinMode(b1, INPUT_PULLUP);
  pinMode(b2, INPUT_PULLUP);
  lcd.init();
  lcd.backlight();
}

void loop() {
  // Turn on the relay (LED turns ON if using Normally Open configuration)
  lcd.clear();
  if(digitalRead(b1)==0)
  {
    lcd.setCursor(0,0);
  digitalWrite(relay, LOW); 
  digitalWrite(r2, LOW);
  lcd.println("LED off");
  lcd.setCursor(0,1);
  lcd.println("Buzz off");
 delay(5000);
   // Keep the LED ON for 5 seconds
  }
  
  // Turn off the relay (LED turns OFF if using Normally Open configuration)
  if(digitalRead(b2)==0)
  {
    lcd.setCursor(0,0);
  digitalWrite(relay, HIGH);
  digitalWrite(r2,LOW);
  lcd.println("LED on");
  lcd.setCursor(0,1);
  lcd.println("Buzz on");
  delay(5000);
 // Keep the LED OFF for 5 seconds
  }
 
}