diff --git a/examples/GLOBALS.php b/examples/GLOBALS.php
new file mode 100644
index 0000000..b4ddf64
--- /dev/null
+++ b/examples/GLOBALS.php
@@ -0,0 +1,7 @@
+<?php
+
+// Set your GPIO here if they are different from the defaults!
+
+define("LED_A", 0);
+define("LED_B", 1);
+define("BTN_A", 2);
diff --git a/examples/basic.php b/examples/basic.php
index 68e517d..298ff47 100644
--- a/examples/basic.php
+++ b/examples/basic.php
@@ -1,6 +1,7 @@
 <?php
 
 require_once __DIR__."/../vendor/autoload.php";
+require_once __DIR__."/GLOBALS.php";
 
 /*
  * This example will flash a led connected on pin 0 (GPIO17 on a Pi). If you are
@@ -23,7 +24,7 @@ $gpio->setMapper( new WiringPiMapper(2) );
 
 // Access logical pin 0, since we got a mapper assigned. Otherwise this would
 // be the actual GPIO0 pin. 
-$led = $gpio[0]
+$led = $gpio[LED_A]
     ->export()
     ->setEdge(Gpio::EDGE_NONE)
     ->setDirection(Gpio::DIR_OUT)