stranger_thing.c

int ALL_BULBS = 13;
int N = 12;
int U = 11;
int R = 10;

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(ALL_BULBS, OUTPUT);
  pinMode(N, OUTPUT);
  pinMode(U, OUTPUT);
  pinMode(R, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(ALL_BULBS, HIGH);   // turn all bulbs off 
  digitalWrite(R, LOW);    // turn the green "R" bulb off
  digitalWrite(U, LOW);    // turn the white "U" bulb off
  digitalWrite(N, LOW);    // turn the orange "N" bulb off
  delay(3000);                       // wait for three seconds
  digitalWrite(R, HIGH);    // turn the green "R" bulb on
  delay(1000);                       // wait for a second
  digitalWrite(R, LOW);    // turn the green "R" bulb off
  delay(1000);                       // wait for a second
  digitalWrite(U, HIGH);    // turn the white "U" bulb on
  delay(1000);                       // wait for a second
  digitalWrite(U, LOW);    // turn the white "U" bulb off
  delay(1000);                       // wait for a second
  digitalWrite(N, HIGH);    // turn the orange "N" bulb on
  delay(1000);                       // wait for a second
  digitalWrite(N, LOW);    // turn the orange "N" bulb off
  delay(1000);                       // wait for a second
  digitalWrite(ALL_BULBS, LOW);   // turn all bulbs on 
  digitalWrite(R, HIGH);    // turn the green "R" bulb on
  digitalWrite(U, HIGH);    // turn the white "U" bulb on
  digitalWrite(N, HIGH);    // turn the orange "N" bulb on
  delay(500);  
  digitalWrite(ALL_BULBS, HIGH);   // turn all bulbs off 
  digitalWrite(R, LOW);    // turn the green "R" bulb off
  digitalWrite(U, LOW);    // turn the white "U" bulb off
  digitalWrite(N, LOW);    // turn the orange "N" bulb off
  delay(200);                       // wait for three seconds
    digitalWrite(ALL_BULBS, LOW);   // turn all bulbs on 
  digitalWrite(R, HIGH);    // turn the green "R" bulb on
  digitalWrite(U, HIGH);    // turn the white "U" bulb on
  digitalWrite(N, HIGH);    // turn the orange "N" bulb on
  delay(200);  
  digitalWrite(ALL_BULBS, HIGH);   // turn all bulbs off 
  digitalWrite(R, LOW);    // turn the green "R" bulb off
  digitalWrite(U, LOW);    // turn the white "U" bulb off
  digitalWrite(N, LOW);    // turn the orange "N" bulb off
  delay(600);                       // wait for three seconds
    digitalWrite(ALL_BULBS, LOW);   // turn all bulbs on 
  digitalWrite(R, HIGH);    // turn the green "R" bulb on
  digitalWrite(U, HIGH);    // turn the white "U" bulb on
  digitalWrite(N, HIGH);    // turn the orange "N" bulb on
  delay(20000);  
}