diff --git a/src/lib/robot.h b/src/lib/robot.h
index e95f1a8..da20adc 100644
--- a/src/lib/robot.h
+++ b/src/lib/robot.h
@@ -32,6 +32,10 @@ extern volatile int goingBW;
 /* Track current speed */
 extern volatile int curr_speedA;
 extern volatile int curr_speedB;
+/* Track previous direction*/
+volatile char prev_dir;
+/* Track current direction*/
+volatile char curr_dir;
 
 /* Setup */
 extern void setup       (void);