void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  for (int i = 54; i <= 69; i++){
    pinMode(i, INPUT_PULLUP);
  }
}

void loop() {
  for (int i = 54; i <= 69; i++){
    Serial.print(digitalRead(i));
    Serial.print(", ");
  }
  Serial.println();
  delay(500);
}