diff --git a/arduino/HelloWorld/HelloWorld.ino b/arduino/HelloWorld/HelloWorld.ino
new file mode 100644
index 0000000..a0f2d08
--- /dev/null
+++ b/arduino/HelloWorld/HelloWorld.ino
@@ -0,0 +1,15 @@
+const unsigned int LED_PIN = 13;
+const unsigned int PAUSE = 500;
+
+
+void setup() {
+    pinMode(LED_PIN, OUTPUT);
+}
+
+
+void loop() {
+    digitalWrite(LED_PIN, HIGH);
+    delay(PAUSE);
+    digitalWrite(LED_PIN, LOW);
+    delay(PAUSE);
+}