#include <TM1637Display.h>

// Module connection pins (Digital Pins)
#define CLK 2
#define DIO 3
#define BUTTON_PIN 4

TM1637Display display(CLK, DIO);

int count = 1;
int buttonState = 0;
int lastButtonState = 0;
unsigned long lastDebounceTime = 0;
unsigned long debounceDelay = 50;

void setup() {
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  display.setBrightness(0x0f);  // Set the brightness of the display
}

void loop() {
  // read the state of the switch into a local variable:
  int reading = digitalRead(BUTTON_PIN);

  // check to see if you just pressed the button
  // (i.e. the input went from LOW to HIGH), and you've waited long enough
  // since the last press to ignore any noise:

  // If the switch changed, due to noise or pressing:
  if (reading != lastButtonState) {
    // reset the debouncing timer
    lastDebounceTime = millis();
  }

  if ((millis() - lastDebounceTime) > debounceDelay) {
    // whatever the reading is at, it's been there for longer than the debounce
    // delay, so take it as the actual current state:

    // if the button state has changed:
    if (reading != buttonState) {
      buttonState = reading;

      // only toggle the count if the new button state is HIGH
      if (buttonState == HIGH) {
        count++;
        if (count > 99) {
          count = 1;
        }
        display.showNumberDec(count, false);
      }
    }
  }

  // save the reading. Next time through the loop, it'll be the lastButtonState:
  lastButtonState = reading;
}