const int floor1Button = 2; // Pin for floor 1 button
const int floor2Button = 3; // Pin for floor 2 button
const int floor3Button = 4; // Pin for floor 3 button
const int led1 = 5; // Pin for floor 1 LED
const int led2 = 6; // Pin for floor 2 LED
const int led3 = 7; // Pin for floor 3 LED
const int relayPin = 8; // Pin for relay module

int currentFloor = 1; // Initial floor

void setup() {
  pinMode(floor1Button, INPUT);
  pinMode(floor2Button, INPUT);
  pinMode(floor3Button, INPUT);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(relayPin, OUTPUT);
}

void loop() {
  // Check for button presses
  if (digitalRead(floor1Button) == HIGH) {
    gotoFloor(1);
  } else if (digitalRead(floor2Button) == HIGH) {
    gotoFloor(2);
  } else if (digitalRead(floor3Button) == HIGH) {
    gotoFloor(3);
  }
}

void gotoFloor(int floor) {
  // Turn off all LEDs
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);

  // Turn on LED for destination floor
  switch (floor) {
    case 1:
      digitalWrite(led1, HIGH);
      break;
    case 2:
      digitalWrite(led2, HIGH);
      break;
    case 3:
      digitalWrite(led3, HIGH);
      break;
  }

  // Control elevator motor using relay
  if (currentFloor < floor) {
    // Move elevator up
    digitalWrite(relayPin, HIGH);
    delay(1000); // Adjust delay for elevator travel time
    digitalWrite(relayPin, LOW);
  } else if (currentFloor > floor) {
    // Move elevator down
    digitalWrite(relayPin, LOW);
    delay(1000); // Adjust delay for elevator travel time
    digitalWrite(relayPin, HIGH);
  }

  currentFloor = floor;
}