// Forum: https://forum.arduino.cc/t/4-digits-tm1637-tru-components/1227073
// This Wokwi project: https://wokwi.com/projects/390426684641017857

#include <TM1637Display.h>

const byte CLK1 = 2;
const byte DIO1 = 3;

TM1637Display display1(CLK1, DIO1);

int a = 1234;

void setup()
{
  display1.setBrightness(7);
  display1.clear();
  pinMode(9, OUTPUT);
}

void loop()
{
  display1.showNumberDec(a);
  digitalWrite(9, HIGH);
}