#include <Adafruit_NeoPixel.h>

// Constants
#define MATRIX_WIDTH 16
#define MATRIX_HEIGHT 16
#define LED_PIN 6

// Create NeoPixel object
Adafruit_NeoPixel matrix = Adafruit_NeoPixel(MATRIX_WIDTH * MATRIX_HEIGHT, LED_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  // Initialize NeoPixel matrix
  matrix.begin();
  matrix.show();  // Turn off all LEDs initially
}

void loop() {
  // Example pattern: rotating red pixel
  for (int i = 0; i < MATRIX_WIDTH; i++) {
    for (int j = 0; j < MATRIX_HEIGHT; j++) {
      matrix.clear();  // Clear all LEDs
      matrix.setPixelColor(j * MATRIX_WIDTH + i, matrix.Color(255, 0, 0));  // Set current pixel to red
      matrix.show();  // Update the matrix
      delay(100);  // Delay between pixels
    }
  }
}