diff --git a/stepper_motor_controller/rotator_pins.h b/stepper_motor_controller/rotator_pins.h
index 5f53019..4390eef 100755
--- a/stepper_motor_controller/rotator_pins.h
+++ b/stepper_motor_controller/rotator_pins.h
@@ -28,4 +28,9 @@
 #define SDA_PIN 3
 #define SCL_PIN 4
 
+#define PIN12 12
+#define PIN13 13
+#define A2    A2
+#define A3    A3
+
 #endif /* ROTATOR_PINS_H_ */