Pin Modes - Carol of the Bells

We learned how to use the pins to allow us to turn things on and off with programming instead of physical switches. I programmed some lights to blink to the pattern of the Carol of the Bells.

Here is the code I used. It's a bit long, so there's probably a more concise way to write it, but it works.


//melody notes:
int b = 4;
int c = 3;
int d = 2;
//bass notes:
int lb = 8;
int lc = 7;
int ld = 6;
int le = 5;

void setup() {
 
  Serial.begin(9600);
  pinMode(b, OUTPUT);
  pinMode(c, OUTPUT);
  pinMode(d, OUTPUT);
  pinMode(lb, OUTPUT);
  pinMode(lc, OUTPUT);
  pinMode(ld, OUTPUT);
  pinMode(le, OUTPUT);
   
}

void loop() {
 
  for(int i = 0; i<5; i++){
  digitalWrite(d, HIGH);
  delay(400);
  digitalWrite(d, LOW);
  digitalWrite(c, HIGH);
  delay(200);
  digitalWrite(c,LOW);
  digitalWrite(d, HIGH);
  delay(200);
  digitalWrite(d,LOW);
  digitalWrite(b,HIGH);
  delay(400);
  digitalWrite(b,LOW);
  }
 digitalWrite(le,HIGH);
 digitalWrite(d, HIGH);
  delay(400);
  digitalWrite(d, LOW);
  digitalWrite(c, HIGH);
  delay(200);
  digitalWrite(c,LOW);
  digitalWrite(d, HIGH);
  delay(200);
  digitalWrite(d,LOW);
  digitalWrite(b,HIGH);
  delay(400);
  digitalWrite(b,LOW);
  digitalWrite(le,LOW);

 digitalWrite(ld,HIGH);
 digitalWrite(d, HIGH);
  delay(400);
  digitalWrite(d, LOW);
  digitalWrite(c, HIGH);
  delay(200);
  digitalWrite(c,LOW);
  digitalWrite(d, HIGH);
  delay(200);
  digitalWrite(d,LOW);
  digitalWrite(b,HIGH);
  delay(400);
  digitalWrite(b,LOW);
  digitalWrite(ld,LOW);
 
  digitalWrite(lc,HIGH);
  digitalWrite(d, HIGH);
  delay(400);
  digitalWrite(d, LOW);
  digitalWrite(c, HIGH);
  delay(200);
  digitalWrite(c,LOW);
  digitalWrite(d, HIGH);
  delay(200);
  digitalWrite(d,LOW);
  digitalWrite(b,HIGH);
  delay(400);
  digitalWrite(b,LOW);
  digitalWrite(lc,LOW);
 
  digitalWrite(lb,HIGH);
  digitalWrite(d, HIGH);
  delay(400);
  digitalWrite(d, LOW);
  digitalWrite(c, HIGH);
  delay(200);
  digitalWrite(c,LOW);
  digitalWrite(d, HIGH);
  delay(200);
  digitalWrite(d,LOW);
  digitalWrite(b,HIGH);
  delay(400);
  digitalWrite(b,LOW);
  digitalWrite(lb,LOW);

}