int buzzerPin = 9; void setup() { pinMode(9, OUTPUT); } void loop() { digitalWrite(9,HIGH); delay(3); digitalWrite(9,LOW); delay(20); digitalWrite(9,HIGH); delay(3); digitalWrite(9,LOW); delay(18); digitalWrite(9,HIGH); delay(3); digitalWrite(9,LOW); delay(16); digitalWrite(9,HIGH); delay(3); digitalWrite(9,LOW); delay(14); digitalWrite(9,HIGH); delay(3); digitalWrite(9,LOW); delay(12); digitalWrite(9,HIGH); delay(3); digitalWrite(9,LOW); delay(8); digitalWrite(9,HIGH); delay(3); digitalWrite(9,LOW); delay(6); }