Arduino_VGRADENI_SISTEMI

#include <SevSeg.h>
SevSeg sevseg;

void setup(){
  byte numDigits = 4;
  byte digitPins[] = {10, 11, 12, 13};
  byte segmentPins[] = {9, 2, 3, 5, 6, 8, 7, 4};

  bool resistorsOnSegments = true;
  bool updateWithDelaysIn = true;
  byte hardwareConfig = COMMON_CATHODE;
  bool updateWithDelays = false;
  bool leadingZeros = true;
  bool disableDecPoint = true;
  sevseg.begin(hardwareConfig, numDigits, digitPins, segmentPins, resistorsOnSegments,
  updateWithDelays, leadingZeros, disableDecPoint);
  sevseg.setBrightness(90);
}

void loop(){
    static unsigned long timer = millis();
  static int deciSeconds = 0;

  if (millis() - timer >= 100) {
    timer += 100;
    deciSeconds++;

    if (deciSeconds == 10000) {
      deciSeconds=0;
    }
    sevseg.setNumber(deciSeconds, 1);
  }

  sevseg.refreshDisplay(); // Must run repeatedly
}