Up and down counter module example for 2.3" display

23 up and down counter.ino

// connect 9V to the counter module
// Connect 5V of Arduino to 5V of module
// Connect GND of Arduino to GND of module
// Connect pin 13 of Arduino to pin 5 of module
// Connect pin 12 of Arduino to pin 4 of module
// Connect pin 11 of Arduino to pin 14 of module

// other connections
//Use this example: https://www.arduino.cc/en/tutorial/debounce and make two exactly same circuits, connect one switch to pin 2 and other to pin 3 of Arduino

const int UpCountPin = 2;    
const int UpPulsePin = 13;      
const int resetpin=11;

const int DownCountPin = 3;    
const int DownPulsePin = 12; 



int UpCountState = HIGH;         
int buttonStateUp;             
int lastbuttonStateUp = LOW;  

int DownCountState = HIGH;         
int buttonStateDown;             
int lastbuttonStateDown = LOW;  




unsigned long lastDebounceTimeforUp = 0; 
unsigned long debounceDelayforUp = 50;    

unsigned long lastDebounceTimeforDown = 0; 
unsigned long debounceDelayforDown = 50;    


void setup() {
  pinMode(UpCountPin, INPUT);
  pinMode(UpPulsePin, OUTPUT);
  pinMode(resetpin,OUTPUT);

  pinMode(DownCountPin, INPUT);
  pinMode(DownPulsePin, OUTPUT);

  // set initial LED state
  digitalWrite(UpPulsePin, UpCountState);
  digitalWrite(DownPulsePin, DownCountState);
  digitalWrite(resetpin, HIGH);
  delay(100);
  digitalWrite(resetpin, LOW);
}

void loop() {

  int readingUp = digitalRead(UpCountPin);
  int readingDown = digitalRead(DownCountPin);


  if (readingUp != lastbuttonStateUp) {
    // reset the debouncing timer
    lastDebounceTimeforUp = millis();
  }

  if (readingDown != lastbuttonStateDown) {
    // reset the debouncing timer
    lastDebounceTimeforDown = millis();
  }

  if ((millis() - lastDebounceTimeforUp) > debounceDelayforUp) {


    if (readingUp != buttonStateUp) {
      buttonStateUp = readingUp;

      
      if (buttonStateUp == HIGH) {
        UpCountState = !UpCountState;
      }
    }
  }
  if ((millis() - lastDebounceTimeforDown) > debounceDelayforDown) {
    
    if (readingDown != buttonStateDown) {
      buttonStateDown = readingDown;


      if (buttonStateDown == HIGH) {
        DownCountState = !DownCountState;
      }
    }
  }

  

  
digitalWrite(UpPulsePin, UpCountState);
digitalWrite(DownPulsePin, DownCountState);
  lastbuttonStateUp = readingUp;
  lastbuttonStateDown = readingDown;
}

https://www.buildcircuit.net/23