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pan_tilt_port: No motors found + Dynamixel XM-430

asked 2018-05-16 04:14:34 -0500

Pedro Gouvea gravatar image

Hello Everyone, I'm following the tutorial dynamixel_controllers/Tutorials/ConnectingToDynamixelBus and I cannot found my motor XM430

When I ran the roslaunch command I receive this:

[FATAL] [1526461074.024123]: pan_tilt_port: No motors found.
================================================================================REQUIRED process [dynamixel_manager-2] has died!
process has died [pid 2580, exit code 1, cmd /opt/ros/kinetic/lib/dynamixel_controllers/controller_manager.py __name:=dynamixel_manager __log:=/home/odroid/.ros/log/35bcd1e4-58e7-11e8-abea-001e063102cf/dynamixel_manager-2.log].
log file: /home/odroid/.ros/log/35bcd1e4-58e7-11e8-abea-001e063102cf/dynamixel_manager-2*.log
Initiating shutdown!
================================================================================

My parameters are:

PARAMETERS
 * /dynamixel_manager/namespace: dxl_manager
 * /dynamixel_manager/serial_ports/pan_tilt_port/baud_rate: 9600
 * /dynamixel_manager/serial_ports/pan_tilt_port/max_motor_id: 5
 * /dynamixel_manager/serial_ports/pan_tilt_port/min_motor_id: 1
 * /dynamixel_manager/serial_ports/pan_tilt_port/port_name: /dev/ttyUSB0
 * /dynamixel_manager/serial_ports/pan_tilt_port/update_rate: 20
 * /rosdistro: kinetic
 * /rosversion: 1.12.1

Thanks a lot

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answered 2018-05-16 13:05:38 -0500

In the tutorial /dev/ttyUSB0 is only an example port. Have you checked that this is the port your actual hardware is connecting on?

The simplest way to check is to type the terminal command ls /dev/ttyUSB* with the device disconnected and connected and seeing which port appears.

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Yes, I'm using the correct port because I could do the read_write tutorial using the exactly same port /dev/ttyUSB0 But for this tutorial I couldn't.

Pedro Gouvea gravatar image Pedro Gouvea  ( 2018-05-16 20:10:56 -0500 )edit

any solution of this error? please suggest!

Ashkr gravatar image Ashkr  ( 2020-01-06 00:36:31 -0500 )edit

Hi, facing the same issue with my dynamixel application. please help!

================================================================================REQUIRED process [dynamixel_manager-2] has died! process has died [pid 13101, exit code 1, cmd /home/pi/ros_catkin_ws/install/lib/dynamixel_controllers/controller_manager.py __name:=dynamixel_manager __log:=/home/pi/.ros/log/93c12428-337b-11ea-90ce-b827eb16b4c4/dynamixel_manager-2.log]. log file: /home/pi/.ros/log/93c12428-337b-11ea-90ce-b827eb16b4c4/dynamixel_manager-2*.log

Initiating shutdown!

Ashkr gravatar image Ashkr  ( 2020-01-10 01:46:56 -0500 )edit

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Asked: 2018-05-16 04:14:34 -0500

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Last updated: May 16 '18