15.2.1. 啟用 TB3

警告：不要在 TurtleBot3 的 SBC 端執行此節指令。 請在 remote PC 上按照此節步驟進行操作。

[Remote PC 端]

1. 啟動機器人模型包括 robot_state_publisher 和 turtlebot3_node 節點

備註：在執行指令前，必須先指定 TurtleBot3 的 model 模型名稱。${TB3_MODEL} 是表示所使用的是 burger, waffle, waffle_pi 模型的名稱。如果你要永久設定 export setting，請參考 Export TURTLEBOT3_MODEL 網頁。

 $ export TURTLEBOT3_MODEL=${TB3_MODEL}
 $ ros2 launch turtlebot3_bringup robot.launch.py

2. 如果 node 節點成功啟動，則 terminal 視窗將顯示以下指令。

[INFO] [launch]: All log files can be found below /home/ubuntu/.ros/log/2019-08-19-01-24-19-009803-ubuntu-15310
[INFO] [launch]: Default logging verbosity is set to INFO
urdf_file_name : turtlebot3_burger.urdf
[INFO] [robot_state_publisher-1]: process started with pid [15320]
[INFO] [hlds_laser_publisher-2]: process started with pid [15321]
[INFO] [turtlebot3_ros-3]: process started with pid [15322]
[robot_state_publisher-1] Initialize urdf model from file: /home/ubuntu/turtlebot_ws/install/turtlebot3_description/share/turtlebot3_description/urdf/turtlebot3_burger.urdf
[robot_state_publisher-1] Parsing robot urdf xml string.
[robot_state_publisher-1] Link base_link had 5 children
[robot_state_publisher-1] Link caster_back_link had 0 children
[robot_state_publisher-1] Link imu_link had 0 children
[robot_state_publisher-1] Link base_scan had 0 children
[robot_state_publisher-1] Link wheel_left_link had 0 children
[robot_state_publisher-1] Link wheel_right_link had 0 children
[robot_state_publisher-1] got segment base_footprint
[robot_state_publisher-1] got segment base_link
[robot_state_publisher-1] got segment base_scan
[robot_state_publisher-1] got segment caster_back_link
[robot_state_publisher-1] got segment imu_link
[robot_state_publisher-1] got segment wheel_left_link
[robot_state_publisher-1] got segment wheel_right_link
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Init TurtleBot3 Node Main
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Init DynamixelSDKWrapper
[turtlebot3_ros-3] [INFO] [DynamixelSDKWrapper]: Succeeded to open the port(/dev/ttyACM0)!
[turtlebot3_ros-3] [INFO] [DynamixelSDKWrapper]: Succeeded to change the baudrate!
[robot_state_publisher-1] Adding fixed segment from base_footprint to base_link
[robot_state_publisher-1] Adding fixed segment from base_link to caster_back_link
[robot_state_publisher-1] Adding fixed segment from base_link to imu_link
[robot_state_publisher-1] Adding fixed segment from base_link to base_scan
[robot_state_publisher-1] Adding moving segment from base_link to wheel_left_link
[robot_state_publisher-1] Adding moving segment from base_link to wheel_right_link
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Start Calibration of Gyro
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Calibration End
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Add Motors
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Add Wheels
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Add Sensors
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Succeeded to create battery state publisher
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Succeeded to create imu publisher
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Succeeded to create sensor state publisher
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Succeeded to create joint state publisher
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Add Devices
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Succeeded to create motor power server
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Succeeded to create reset server
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Succeeded to create sound server
[turtlebot3_ros-3] [INFO] [turtlebot3_node]: Run!
[turtlebot3_ros-3] [INFO] [diff_drive_controller]: Init Odometry
[turtlebot3_ros-3] [INFO] [diff_drive_controller]: Run!

3. 你也可以查看 topic 主題和 service 服務列表，如下所示

Topic

$ ros2 topic list
/battery_state
/cmd_vel
/imu
/joint_states
/magnetic_field
/odom
/parameter_events
/robot_description
/rosout
/scan
/sensor_state
/tf
/tf_static

Service List

$ ros2 service list
/diff_drive_controller/describe_parameters
/diff_drive_controller/get_parameter_types
/diff_drive_controller/get_parameters
/diff_drive_controller/list_parameters
/diff_drive_controller/set_parameters
/diff_drive_controller/set_parameters_atomically
/hlds_laser_publisher/describe_parameters
/hlds_laser_publisher/get_parameter_types
/hlds_laser_publisher/get_parameters
/hlds_laser_publisher/list_parameters
/hlds_laser_publisher/set_parameters
/hlds_laser_publisher/set_parameters_atomically
/launch_ros/describe_parameters
/launch_ros/get_parameter_types
/launch_ros/get_parameters
/launch_ros/list_parameters
/launch_ros/set_parameters
/launch_ros/set_parameters_atomically
/motor_power
/reset
/sound
/turtlebot3_node/describe_parameters
/turtlebot3_node/get_parameter_types
/turtlebot3_node/get_parameters
/turtlebot3_node/list_parameters
/turtlebot3_node/set_parameters
/turtlebot3_node/set_parameters_atomically