#include "BluetoothSerial.h"
BluetoothSerial SerialBT;
 


void setup() {
  // put your setup code here, to run once:
  SerialBT.begin("ESP32");
  pinMode(5, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
 char a;
 if(SerialBT.available()){
  a = SerialBT.read();
  if (a =='1'){digitalWrite(5, HIGH);}
  else if(a == '0'){digitalWrite(5, LOW);}
 }
 delay(20);
}