v.0.0.1 setup Serial output

src/main.cpp

@@ -57,6 +57,14 @@ void playWithBlinkLed()
 
 void setup()
 {
+    // Initialize Serial for debug output
+    Serial.begin(115200);
+
+    // Wait for Serial to be ready (important for some boards)
+    while (!Serial)
+    {
+        delay(10);
+    }
     matrix.setBrightness(255);
 
     matrix.clear();