String valFromKbd;
int buzzPin =27;


void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(buzzPin, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:

  if (Serial.available() > 0){
    valFromKbd=Serial.read();
    Serial.println(valFromKbd);
  }

  if(valFromKbd=="ON"){
    digitalWrite(buzzPin, HIGH);
  }

  if(valFromKbd =="OFF"){
    digitalWrite(buzzPin,LOW);
  }
  
}