diff --git a/y2014/control_loops/drivetrain/drivetrain.q b/y2014/control_loops/drivetrain/drivetrain.q
index 872efec..585b8ed 100644
--- a/y2014/control_loops/drivetrain/drivetrain.q
+++ b/y2014/control_loops/drivetrain/drivetrain.q
@@ -39,6 +39,10 @@
     double right_encoder;
     double left_shifter_position;
     double right_shifter_position;
+    double low_left_hall;
+    double high_left_hall;
+    double low_right_hall;
+    double high_right_hall;
   };
 
   message Output {