ubuntu@drone:~$ rostopic list
/battery_state
/camera/camera_info
/camera/image
/camera/image/compressed
/camera/parameter_descriptions
/camera/parameter_updates
/cmd_vel
/diagnostics
/joint_states
/joy
/left_error
/mavlink/from
/mavlink/to
/mavros/adsb/send
/mavros/adsb/vehicle
/mavros/battery
/mavros/cam_imu_sync/cam_imu_stamp
/mavros/companion_process/status
/mavros/distance_sensor/rangefinder_pub
/mavros/distance_sensor/rangefinder_sub
/mavros/extended_state
/mavros/fake_gps/mocap/tf
/mavros/global_position/compass_hdg
/mavros/global_position/global
/mavros/global_position/gp_lp_offset
/mavros/global_position/gp_origin
/mavros/global_position/home
/mavros/global_position/local
/mavros/global_position/raw/fix
/mavros/global_position/raw/gps_vel
/mavros/global_position/rel_alt
/mavros/global_position/set_gp_origin
/mavros/gps_rtk/send_rtcm
/mavros/home_position/home
/mavros/home_position/set
/mavros/imu/data
/mavros/imu/data_raw
/mavros/imu/diff_pressure
/mavros/imu/mag
/mavros/imu/static_pressure
/mavros/imu/temperature_baro
/mavros/imu/temperature_imu
/mavros/local_position/accel
/mavros/local_position/odom
/mavros/local_position/pose
/mavros/local_position/pose_cov
/mavros/local_position/velocity_body
/mavros/local_position/velocity_body_cov
/mavros/local_position/velocity_local
/mavros/log_transfer/raw/log_data
/mavros/log_transfer/raw/log_entry
/mavros/manual_control/control
/mavros/manual_control/send
/mavros/mission/reached
/mavros/mission/waypoints
/mavros/mocap/pose
/mavros/obstacle/send
/mavros/odometry/in
/mavros/odometry/out
/mavros/param/param_value
/mavros/radio_status
/mavros/rangefinder/rangefinder
/mavros/rc/in
/mavros/rc/out
/mavros/rc/override
/mavros/setpoint_accel/accel
/mavros/setpoint_attitude/cmd_vel
/mavros/setpoint_attitude/thrust
/mavros/setpoint_position/global
/mavros/setpoint_position/local
/mavros/setpoint_raw/attitude
/mavros/setpoint_raw/global
/mavros/setpoint_raw/local
/mavros/setpoint_raw/target_attitude
/mavros/setpoint_raw/target_global
/mavros/setpoint_raw/target_local
/mavros/setpoint_velocity/cmd_vel
/mavros/setpoint_velocity/cmd_vel_unstamped
/mavros/state
/mavros/statustext/recv
/mavros/statustext/send
/mavros/time_reference
/mavros/timesync_status
/mavros/trajectory/desired
/mavros/trajectory/generated
/mavros/trajectory/path
/mavros/vfr_hud
/mavros/vision_pose/pose
/mavros/vision_pose/pose_cov
/mavros/wind_estimation
/motor_node/parameter_descriptions
/motor_node/parameter_updates
/odom
/right_error
/rosbridge_ws/client_count
/rosbridge_wss/client_count
/rosout
/rosout_agg
/statistics
/tf
/tf2_web_republisher/cancel
/tf2_web_republisher/feedback
/tf2_web_republisher/goal
/tf2_web_republisher/result
/tf2_web_republisher/status
/tf_static
/ubiquity_velocity_controller/parameter_descriptions
/ubiquity_velocity_controller/parameter_updates
/vision/pose
/vision/status