A little choreography with blinking lights.

 

#define bluePin 5
#define ledPin 4
#define redPin 3

void setup() {
pinMode( 5, OUTPUT);
pinMode( 4, OUTPUT);
pinMode( 3, OUTPUT);
}

void loop() {
digitalWrite( bluePin, HIGH);
delay ( 1250 );
digitalWrite( bluePin, LOW);
digitalWrite( ledPin, HIGH);
delay ( 1500 );
digitalWrite( ledPin, LOW);
delay ( 150 );
digitalWrite( bluePin, HIGH);
delay ( 400 );
digitalWrite( bluePin, LOW);
digitalWrite( ledPin, HIGH);
delay ( 500 );
digitalWrite( ledPin, LOW);
digitalWrite( bluePin, HIGH);
delay ( 1000 );
digitalWrite( bluePin, LOW);
digitalWrite( ledPin, HIGH);
delay ( 2000 );
digitalWrite( ledPin, LOW);
delay ( 50 );

digitalWrite( bluePin, HIGH);
delay ( 450 );
digitalWrite( bluePin, LOW);
digitalWrite( ledPin, HIGH);
delay ( 500 );
digitalWrite( ledPin, LOW);
digitalWrite( bluePin, HIGH);
delay ( 1000 );
digitalWrite( bluePin, LOW);
digitalWrite( ledPin, HIGH);
delay ( 2000 );
digitalWrite( ledPin, LOW);

digitalWrite( bluePin, HIGH);
delay ( 500 );
digitalWrite( ledPin, HIGH);
delay ( 500 );
digitalWrite( redPin, HIGH);
delay ( 2000 );
digitalWrite( bluePin, LOW);
digitalWrite( ledPin, LOW);
digitalWrite( redPin, LOW);
delay ( 2150 );

}