diff --git a/launch/step_4.launch.py b/launch/step_4.launch.py
index bee9cc5330bf8a8a731dc426299d0698b596e4a2..2196493c7577783d212aaef2587bae967823d5fe 100644
--- a/launch/step_4.launch.py
+++ b/launch/step_4.launch.py
@@ -4,6 +4,12 @@ from launch_ros.actions import Node
 
 def generate_launch_description():
     return LaunchDescription([
+	Node(
+            package='rqt_plot',
+            namespace='',
+            executable='rqt_plot',
+            name='cons'
+        ),
         Node(
             package='turtlesim',
             namespace='',