Control two loads with a single pin

/*
  Blink2

  Turns a LED on for one second, then off for one second, same for a second LED on the same pin repeatedly.
  Switches PIN to INPUT to turn leds off, OUTPUT TRUE or FALSE to turn one of the LEDs on.

*/

// the setup function runs once when you press reset or power the board
void setup() {
}

#define SHARED_PIN    5
// the loop function runs over and over again forever
void loop() {
  pinMode(SHARED_PIN, OUTPUT);
  digitalWrite(SHARED_PIN, HIGH);  // turn the LED on (HIGH is the voltage level)
  delay(1000);   
                     // wait for a second
  pinMode(SHARED_PIN, INPUT);
  delay(1000);                      // wait for a second

  pinMode(SHARED_PIN, OUTPUT);
  digitalWrite(SHARED_PIN, LOW);   // turn the LED off by making the voltage LOW
  delay(1000);                      // wait for a second

  pinMode(SHARED_PIN, INPUT);
  delay(1000);                      // wait for a second

}