کدتون اصلاح شد
ترتیب هاش هم یه تغییر کرد تا کد خوانا تر باشه

کد:
int right_pin = 10;
int left_pin = 11;
int up_pin = 14;
int center_pin = 4;
int down_pin = 13;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(right_pin, INPUT);
  pinMode(left_pin, INPUT);
  pinMode(up_pin, INPUT);
  pinMode(center_pin, INPUT);
  pinMode(down_pin, INPUT);
}


void loop() {
  // put your main code here, to run repeatedly:
  int right_value = digitalRead(right_pin);
  int left_value = digitalRead(left_pin);
  int up_value = digitalRead(up_pin);
  int center_value = digitalRead(center_pin);
  int down_value = digitalRead(down_pin);
  if (right_value == 1)
  {
    Serial.println("right");
  }
  if (left_value == 1)
  {
    Serial.println("down");
  }
  if (up_value == 1)
  {
    Serial.println("UP");
  }
  if (center_value == 1)
  {
    Serial.println("center");
  }
  if (down_value == 1)
  {
    Serial.println("down");
  }
}