https://media.discordapp.net/attachments/454018407994490880/728737212958507038/IMG_7789.jpg?width=439&height=585

matrix_driver.ino

const int DATA_PIN = 2;
const int LATCH_PIN = 3;
const int CLOCK_PIN = 4;
const int RESET_PIN = 5;
const int BLINK_PIN = 13;
int data[] = {
  0, 0, 0, 0, // filler pins
  1, 0, 0, 0, 0, // columns
  1, 1, 0, 1, 0, 1, 1 // rows
};
int smiley1[] = {
  0, 0, 0, 0,
  1, 0, 0, 0, 0, // top row
  1, 1, 0, 1, 0, 1, 1 // active leds for top row
};
int smiley2[] = {
  0, 0, 0, 0,
  0, 0, 1, 0, 0,
  1, 0, 1, 1, 1, 0, 1
};
int smiley3[] = {
  0, 0, 0, 0,
  0, 0, 0, 4, 0,
  1, 1, 0, 0, 0, 1, 1
};
void write(int arr[]) {
  for (int i = 16; i >= 0; i--) {
    // Set up the data BEFORE the clock pulse!
    if (arr[i] == 0) {
      digitalWrite(DATA_PIN, LOW);
    } else {
      digitalWrite(DATA_PIN, HIGH);
    }
    // Trigger clock...
    digitalWrite(CLOCK_PIN, HIGH);
    // ...and reset
    digitalWrite(CLOCK_PIN, LOW);
  }
  // And now trigger the latch...
  digitalWrite(LATCH_PIN, HIGH);
  // ..and reset
  digitalWrite(LATCH_PIN, LOW);
}
void setup() {
  // init pins
  pinMode(DATA_PIN, OUTPUT);
  pinMode(LATCH_PIN, OUTPUT);
  pinMode(CLOCK_PIN, OUTPUT);
  pinMode(RESET_PIN, OUTPUT);
  pinMode(BLINK_PIN, OUTPUT);
  // blink three times for success
  for (int i = 0; i < 3; i++) {
    digitalWrite(BLINK_PIN, HIGH);
    delay(200);
    digitalWrite(BLINK_PIN, LOW);
    delay(200);
  }
}

void loop() {
  // emote faces
  write(smiley1);
  write(smiley2);
  write(smiley3);
}