diff --git a/robomaster_pi/conn_vel.py b/robomaster_pi/conn_vel.py
index 139d81cc3e956d8cfd19b5cecd1734d0077dcc7b..25e36a40a7e88df096c5ff4f1a7ee06fbbb1a2fe 100644
--- a/robomaster_pi/conn_vel.py
+++ b/robomaster_pi/conn_vel.py
@@ -34,7 +34,7 @@ class vel_from_ros_node(Node):
         self.timer.start()
 
     def isConnected(self):
-        response = ping3.ping("192.168.1.77")
+        response = ping3.ping("192.168.1.1")
         if response is not None:
             return True
         else: