//Include the library file
#include "BluetoothSerial.h"

BluetoothSerial SerialBT;
#define relay 13 // Relay pin
#define buzzer 23 // Buzzer pin

void setup() {
  Serial.begin(115200);
  SerialBT.begin("SriTu Hobby"); //Bluetooth device name
  Serial.println("The device started, now you can pair it with bluetooth!");

  pinMode(relay, OUTPUT);
  pinMode(buzzer, OUTPUT);
  digitalWrite(relay, HIGH);
}
void loop() {
  if (SerialBT.available()) {
    String value = SerialBT.readString();
    Serial.println(value);
    if (value == "turn on the bulb") {
      digitalWrite(relay, LOW);
      Serial.println("on");
    } else if (value == "turn off the bulb") {
      digitalWrite(relay, HIGH);
      Serial.println("off");
    } else {
      digitalWrite(buzzer, HIGH);
      delay(100);
      digitalWrite(buzzer, LOW);
      delay(100);
      digitalWrite(buzzer, HIGH);
      delay(100);
      digitalWrite(buzzer, LOW);
      delay(100);
      digitalWrite(buzzer, HIGH);
      delay(100);
      digitalWrite(buzzer, LOW);
      delay(100);
    }
  }
}