#include <SoftwareSerial.h>

SoftwareSerial bluetooth (0, 1);

const int LedPin = 13;

void setup() {

  pinMode (LedPin, OUTPUT);

  bluetooth.begin(9600);

  Serial.begin(9600);

  Serial.println("Bluetooth LED Control Ready");

  // put your setup code here, to run once:

}

void loop() {

  if (bluetooth.available()){// put your main code here, to run repeatedly:

  char command = bluetooth.read();

    if (command == '1') {

    digitalWrite(LedPin, HIGH);

    Serial.println("LED ON");

    } else if (command == '0') {

      digitalWrite(LedPin, LOW);

      Serial.print("LED OFF");

    }

    } 

}
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#include <Wire.h>

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
void setup() {
  // put your setup code here, to run once:
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Hello!");
  delay(5000);
  lcd.clear();
  }

void loop() {
  // put your main code here, to run repeatedly:

}