Robot Operating System - ROS 2 - interface show message type

Nodes send data over topics using messages. Publishers and subscribers must send and receive the same type of message to communicate.

We got all topic and each message type by command [ros2 topic list -t]

All the topic and its message type are:

/ThuyTrang/cmd_vel [geometry_msgs/msg/Twist]

/ThuyTrang/color_sensor [turtlesim/msg/Color]

/ThuyTrang/pose [turtlesim/msg/Pose]

/parameter_events [rcl_interfaces/msg/ParameterEvent]

/rosout [rcl_interfaces/msg/Log]

/turtle1/cmd_vel [geometry_msgs/msg/Twist]

/turtle1/color_sensor [turtlesim/msg/Color]

/turtle1/pose [turtlesim/msg/Pose]



Then we can get more detail the message type of each topic

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