int id = 0;
int baud = 19200;
int enable = 2;

void setup(){
  pinMode(A0,INPUT);
  id = analogRead(A0)*10;
  pinMode(enable,OUTPUT);  
  Serial.begin(baud);  
  Serial.print("Baud rate set to ");
  Serial.println(baud);
  Serial.print("Initialized #");
  Serial.println(id);

}

void loop(){
  delay(id);
  digitalWrite(enable,HIGH);
  Serial.write("Howdy, this is Arduino #");
  Serial.println(id);
  Serial.flush();
  digitalWrite(enable,LOW);  
}