int pin_teller1 = 27, pin_reset1 = 14, pin_teller2 = 12, pin_reset2 = 13;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(pin_teller1, INPUT_PULLUP);
  pinMode(pin_reset1, INPUT_PULLUP);
  pinMode(pin_teller2, INPUT_PULLUP);
  pinMode(pin_reset2, INPUT_PULLUP);
  Serial.println("start program");
}

void loop() {
  static int teller1 = 0;
  static int teller2 = 0;
  static bool status_teller1_eerder = 0;
  static bool status_reset1_eerder = 0;
  static bool status_teller2_eerder = 0;
  static bool status_reset2_eerder = 0;
  bool status;
  bool change = 0;

  status = digitalRead(pin_teller1);
  if (status != status_teller1_eerder) {
    status_teller1_eerder  = status;
    if (status == 0) {
      teller1++; change = 1;
    }
    delay(5);
  }

  status = digitalRead(pin_reset1);
  if (status != status_reset1_eerder) {
    status_reset1_eerder  = status;
    if (status == 0) {
      teller1 = 0; change = 1;
    }
    delay(5);
  }

  status = digitalRead(pin_teller2);
  if (status != status_teller2_eerder) {
    status_teller2_eerder  = status;
    if (status == 0) {
      teller2++; change = 1;
    }
    delay(5);
  }

  status = digitalRead(pin_reset2);
  if (status != status_reset2_eerder) {
    status_reset2_eerder  = status;
    if (status == 0) {
      teller2 = 0; change = 1;
    }
    delay(5);
  }

  if (change)
    Serial.println("teller1 = " + String(teller1)+ ",teller2 = " + String(teller2));

}