# how to stop microdds-agent from running?

Source: https://forum.modalai.com/topic/2895/how-to-stop-microdds-agent-from-running
Category: VOXL SDK and Software (https://forum.modalai.com/category/47/voxl-sdk-and-software)
Tags: ros
Posted: 2023-11-22 07:09:35 UTC by Kyuhyong You
Replies: 1 · Views: 893

## Kyuhyong You · 2023-11-22 07:09:35 UTC

As soon as I install voxl-ros2-foxy, I see topics being published 
```
$ ros2 topic list
/fmu/collision_constraints/out
/fmu/debug_array/in
/fmu/debug_key_value/in
/fmu/debug_value/in
/fmu/debug_vect/in
/fmu/manual_control_setpoint/in
/fmu/offboard_control_mode/in
/fmu/onboard_computer_status/in
/fmu/optical_flow/in
/fmu/position_setpoint/in
/fmu/position_setpoint_triplet/in
/fmu/sensor_combined/out
/fmu/telemetry_status/in
/fmu/timesync/in
/fmu/timesync/out
/fmu/trajectory_bezier/in
/fmu/trajectory_setpoint/in
/fmu/trajectory_waypoint/out
/fmu/vehicle_attitude/out
/fmu/vehicle_command/in
/fmu/vehicle_command_ack/out
/fmu/vehicle_global_position/out
/fmu/vehicle_local_position/out
/fmu/vehicle_local_position_setpoint/in
/fmu/vehicle_mocap_odometry/in
/fmu/vehicle_odometry/out
/fmu/vehicle_offboard_setpoints/in
/fmu/vehicle_setpoints/in
/fmu/vehicle_status/out
/fmu/vehicle_trajectory_bezier/in
/fmu/vehicle_trajectory_waypoint/in
/fmu/vehicle_trajectory_waypoint_desired/out
/fmu/vehicle_visual_odometry/in
/gimbal_attitude
/mission_command
/mission_command_ack
/mission_status
/parameter_events
/physical_state
/rosout
/set_vehicle_id
/stick_command
/timesync_status
/vehicle_command
/vehicle_command_ack
/vehicle_status
```
I didn't even installed voxl-microdds-agent, voxl-mpa-to-ros2
How can I let voxl stop sending these message?
I just want to run the agent myself.
Thanks,

## Reply by Eric Katzfey (ModalAI staff) · 2023-11-22 15:40:43 UTC

@Kyuhyong-You Take a look at the file /usr/bin/voxl-px4-start. That is the file that starts all of the PX4 drivers, modules, etc. Look for the `microdds_client start -t udp -h 127.0.0.1 -p 8888` line and comment that out.