// Bluetooth light connection

#include <Arduino.h>
int val; // Ender the variable "val"
void setup()  // the setup function tuns once when you press reset or power the board
{
  Serial1.begin (9600);
  pinMode (26, OUTPUT); // initialize digital pin 13 as an output.
}

void loop() // the loop function runs over and over again forever
{
  if (Serial1.available ()) // If "Serial" is available, 
  {
    val = Serial1.read ();  //hten "val" is equal to "Serial.read"

    if (val == '1') //If "val" is equal to 1,
    {
      digitalWrite (26, HIGH);  // then on the 13th pin the voltage is applied (the LED lights up)
    }

    if (val == '0') // If "val" is 0, 
    {
      digitalWrite (26, LOW); // then the 13th pin does not feed the voltage (The LED goes out)
    }
  }
}