const int buzzer = 9; //buzzer to arduino pin 9

void setup()
{
	Serial.begin(9600);
	pinMode(buzzer, OUTPUT); // Set buzzer - pin 9 as an output
	
	Serial.println("Setup Ready");
}

void loop()
{
	Serial.println("loop start");

	tone(buzzer, 440,2000); // Send 440Hz sound signal for 2000mSec
	Serial.println("First ton to hear ?");

	delay(500);        // ...for 1 sec
	//noTone(buzzer);     // Stop sound...
	tone(buzzer, 880,1500); // Send 880Hz sound signal...
	Serial.println("anything to hear ?");
	delay(500);        // ...for 1sec
}