Update mccd.launch

motors_control_card/launch/mccd.launch

 <launch>
 
-    <arg name="port" default="/dev/ttyACM0"/>
+    <arg name="port" default="/dev/mccd"/>
     <arg name="baud" default="115200"/>
 
     <node name="mccd" pkg="rosserial_python" type="serial_node.py" output="screen">
-        <rosparam param="left_motor_gains">[1.0, 0.0, 0.0]</rosparam>
-        <rosparam param="right_motor_gains">[1.0, 0.0, 0.0]</rosparam>
+        <rosparam param="left_motor_gains">[3.285, 64.40766, 0.0]</rosparam>
+        <rosparam param="right_motor_gains">[3.240, 66.48427, 0.0]</rosparam>
 
         <param name="port" type="string" value="$(arg port)"/>
         <param name="baud" type="int" value="$(arg baud)"/>