int Balarm = 13;
int PIRsensor = 2; 
int LedPin = 14;
//#define pitch  262
//const int channel = 262;


void setup() {
  //Serial.begin(9600);
  pinMode(PIRsensor, INPUT); // PIR sensor as input  
  pinMode(Balarm, OUTPUT);   // Buzzer alaram as output
  pinMode(LedPin, OUTPUT);
  //digitalWrite (Balarm, LOW);// Initially buzzer off
}

void loop(){
  int state = digitalRead(PIRsensor); 
  delay(500);                         
    if(state == HIGH){                
      //digitalWrite (Balarm , HIGH);  
      myTone(Balarm);
      digitalWrite (LedPin , HIGH); 
      delay(1000);  
      //digitalWrite (Balarm , LOW);   
      //digitalWrite (LedPin , LOW);
    }
    else {
      //digitalWrite (Balarm , LOW);   
      myNoTone(Balarm);
      digitalWrite (LedPin , LOW);
    }
}

void myTone( int pin)
{
  ledcAttachPin(pin, 0);             // pin, channel
  ledcWriteNote(0, NOTE_F, 4);    // channel, frequency, octave
}

void myNoTone( int pin)
{
  ledcDetachPin(pin);
}