#include "SevSeg.h"
SevSeg sevseg; //Initiate a seven segment controller object


void setup() {

    byte numDigits = 4;  
    byte digitPins[] = {2, 3, 4, 5};
    byte segmentPins[] = {6, 7, 8, 9, 10, 11, 12, 13};
    bool resistorsOnSegments = 1; 
    sevseg.begin(COMMON_ANODE, numDigits, digitPins, segmentPins, resistorsOnSegments);
    sevseg.setBrightness(90);
}
void loop() {

    int key = (0x1B58 / 0x64) >> 1;
    int secret_number = (key << 2) & 0x7F;

    sevseg.setNumber(secret_number, 3);
    sevseg.refreshDisplay(); 
}