37 Sensor x Cogsworth City DLC 01 – Lesson 1: The Joystick Navigator

const int LED_PINS[9] = {2, 3, 4, 5, 6, 7, 8, 9, 10};
const int JOYSTICK_X = A0;
const int JOYSTICK_Y = A1;

int currentPosition = 4; // Start in the center

void setup() {
  for (int i = 0; i < 9; i++) {
    pinMode(LED_PINS[i], OUTPUT);
  }
  pinMode(JOYSTICK_X, INPUT);
  pinMode(JOYSTICK_Y, INPUT);
}

void loop() {
  int xValue = analogRead(JOYSTICK_X);
  int yValue = analogRead(JOYSTICK_Y);

  // Turn off all LEDs
  for (int i = 0; i < 9; i++) {
    digitalWrite(LED_PINS[i], LOW);
  }

  // Update position based on joystick input
  if (xValue < 300 && currentPosition % 3 != 0) currentPosition--;
  if (xValue > 700 && currentPosition % 3 != 2) currentPosition++;
  if (yValue < 300 && currentPosition > 2) currentPosition -= 3;
  if (yValue > 700 && currentPosition < 6) currentPosition += 3;

  // Turn on LED at current position
  digitalWrite(LED_PINS[currentPosition], HIGH);

  delay(100); // Small delay for stability
}