<launch> <node pkg="nodelet" type="nodelet" name="Master" args="manager" output="screen"> <param name="num_worker_threads" value="16" /> </node> <node pkg="nodelet" type="nodelet" name="nodelet_main_node" args="load car/main_node Master"/> <node pkg="nodelet" type="nodelet" name="nodelet_environment" args="load car/environment Master"/> <node pkg="nodelet" type="nodelet" name="nodelet_ultrasonic" args="load car/ultrasonic Master"/> <node pkg="nodelet" type="nodelet" name="nodelet_camera" args="load car/camera Master"/> </launch> <!-- <node pkg="nodelet" type="nodelet" name="" args="load car/ Master"/> -->