Blinking LEDs.

src/main.cpp

@@ -1,7 +1,23 @@
 #include <Arduino.h>
 
+// Setup Section
 void setup() {
+  pinMode(13, OUTPUT);
+  pinMode(12, OUTPUT);
+  pinMode(11, OUTPUT);
 }
 
+// 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);
 }