diff --git a/Tutorial/SimpleAtariExample.ino b/Tutorial/SimpleAtariExample.ino
index 94e1888..b4ed195 100644
--- a/Tutorial/SimpleAtariExample.ino
+++ b/Tutorial/SimpleAtariExample.ino
@@ -7,11 +7,13 @@
 
 // Here we define pins we used. Along with these we have to connect joystick ground to Arduino GND.
 // Because of Arduino internal pullup resistor off state is 1. Moving joystick switches that to ground and then it is 0.
-#define UP 2
-#define DOWN 3
-#define LEFT 4
-#define RIGHT 5
-#define BUTTON 6
+// 9-pin D-connector:
+#define UP 2 // D-connector pin 1
+#define DOWN 3 // D-connector pin 2
+#define LEFT 4 // D-connector pin 3
+#define RIGHT 5 // D-connector pin 4
+#define BUTTON 6 // D-connector pin 6
+// D-connector pin 8 to GND
 
 
 // We keep record how everything was last time, so we can compare if anything have changed.