#include <SevSeg.h>
SevSeg sevseg;

void setup() {
    byte numDigits = 4;  
    byte digitPins[] = {2, 3, 4, 5};
    byte segmentPins[] = {6, 7, 8, 9, 10, 11, 12, 13};
    bool resistorsOnSegments = 0; 
  
    sevseg.begin(COMMON_CATHODE, numDigits, digitPins, segmentPins, resistorsOnSegments);
    sevseg.setBrightness(60);
}

void loop() {
    sevseg.setChars("5791"); // set the characters/numbers to display.
    sevseg.refreshDisplay();
}