int ledPin1 = 3;
int ledPin2 = 5;
int ledPin3 = 7;
int buttonUp = 10; // Button to increase count
int buttonDown = 8; // Button to decrease count
int counter = 0; // Binary counter
bool lastButtonUpState = LOW; // Previous state of the buttonUp
bool lastButtonDownState = LOW; // Previous state of the buttonDown

void setup() {
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(buttonUp, INPUT); // Initialize button pin as input
  pinMode(buttonDown, INPUT); // Initialize button pin as input
}

void loop() {
  bool currentButtonUpState = digitalRead(buttonUp);
  bool currentButtonDownState = digitalRead(buttonDown);

  // Check for buttonUp state change from not pressed to pressed
  if (currentButtonUpState == HIGH && lastButtonUpState == LOW) {
    if (counter < 7) {
      counter++;
      updateLEDs(counter);
    }
    delay(50); // Basic debouncing
  }
  lastButtonUpState = currentButtonUpState; // Update the last button state

  // Check for buttonDown state change from not pressed to pressed
  if (currentButtonDownState == HIGH && lastButtonDownState == LOW) {
    if (counter > 0) {
      counter--;
      updateLEDs(counter);
    }
    delay(50); // Basic debouncing
  }
  lastButtonDownState = currentButtonDownState; // Update the last button state
}

void updateLEDs(int value) {
  digitalWrite(ledPin1, bitRead(value, 0));
  digitalWrite(ledPin2, bitRead(value, 1));
  digitalWrite(ledPin3, bitRead(value, 2));
}