func (l *BuzzerDriver) Tone(duration float64, out bool) (err error) {
	// Modified by Raul M Crivineanu
	if out == true {
		return
	}
	tempo := ((60 / l.BPM) * (duration * 1000))
	for i := 0.0; i < tempo*7000; i += 550 {
			l.connection.DigitalWrite(l.Pin(), 100)
			time.Sleep(time.Duration(duration)*time.Millisecond)
			l.connection.DigitalWrite(l.Pin(), 0)
			time.Sleep(time.Duration(duration)*time.Millisecond)
	}
	return
}