Blinking LEDs (better).

src/main.cpp

@@ -9,15 +9,9 @@ void setup() {
 
 // Loop Section
 void loop() {
-  digitalWrite(13, HIGH);
-  delay(1000);
-  digitalWrite(13, LOW);
-
-  digitalWrite(12, HIGH);
-  delay(1000);
-  digitalWrite(12, LOW);
-
-  digitalWrite(11, HIGH);
-  delay(1000);
-  digitalWrite(11, LOW);
+  for (int i = 13; i > 10; i--) {
+    digitalWrite(i, HIGH);
+    delay(1000);
+    digitalWrite(i, LOW);
+  }
 }