iambic.ino

int buzzer = 13;
int dit_pin = 2;

const int dit_delay = 50000;

void setup()
{
  pinMode(buzzer, OUTPUT);
  pinMode(dit_pin, INPUT);
  attachInterrupt(0, dit, LOW); // uses pin 2 as external interrupt
}

void dit()
{
  digitalWrite(buzzer, HIGH);
  delayMicroseconds(dit_delay);
  digitalWrite(buzzer, LOW);
  delayMicroseconds(dit_delay);
}


void loop(){}