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2014-12-04 10:18:29 -0500 commented answer dynamixel no motor found

Thanks for the reply. Yes,i configured the servos with baud rate and id . But still no luck. Should i use usb2dynamixel or is OpenCM9.04B enough for this tutorial?

2014-12-04 07:20:50 -0500 commented answer Use a Robotis OpenCM9.04 board to control a Trutlebot arm

sir, i am using the opencm9.04b board.it would be very helpful if you publish the code. And can you brief about how you uploaded the code to opencm9.04b? like did you use the arduino IDE or OpenCm provided by ROBOTIS. Thank you...

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2014-12-03 18:39:56 -0500 asked a question dynamixel no motor found

i had connected OpenCM9.04 with MX-64 motors. tried this dynamixel tutorial.after this step,

roslaunch my_dynamixel_tutorial controller_manager.launch

i get this error:

SUMMARY
========

PARAMETERS
 * /dynamixel_manager/namespace: dxl_manager
 * /dynamixel_manager/serial_ports/pan_tilt_port/baud_rate: 57600
 * /dynamixel_manager/serial_ports/pan_tilt_port/max_motor_id: 25
 * /dynamixel_manager/serial_ports/pan_tilt_port/min_motor_id: 1
 * /dynamixel_manager/serial_ports/pan_tilt_port/port_name: /dev/ttyACM0
 * /dynamixel_manager/serial_ports/pan_tilt_port/update_rate: 20
 * /rosdistro: indigo
 * /rosversion: 1.11.9

NODES
  /
    dynamixel_manager (dynamixel_controllers/controller_manager.py)

auto-starting new master
process[master]: started with pid [3297]
ROS_MASTER_URI=http://localhost:11311

setting /run_id to 68403748-7b49-11e4-b3a3-ac7289859e59
process[rosout-1]: started with pid [3310]
started core service [/rosout]
process[dynamixel_manager-2]: started with pid [3327]
/opt/ros/indigo/lib/python2.7/dist-packages/dynamixel_driver/dynamixel_serial_proxy.py:92: SyntaxWarning: The publisher should be created with an explicit keyword argument 'queue_size'. Please see http://wiki.ros.org/rospy/Overview/Publishers%20and%20Subscribers for more information.
  self.motor_states_pub = rospy.Publisher('motor_states/%s' % self.port_namespace, MotorStateList)
/opt/ros/indigo/lib/python2.7/dist-packages/dynamixel_driver/dynamixel_serial_proxy.py:93: SyntaxWarning: The publisher should be created with an explicit keyword argument 'queue_size'. Please see http://wiki.ros.org/rospy/Overview/Publishers%20and%20Subscribers for more information.
  self.diagnostics_pub = rospy.Publisher('/diagnostics', DiagnosticArray)
[INFO] [WallTime: 1417651594.990743] pan_tilt_port: Pinging motor IDs 1 through 25...
[FATAL] [WallTime: 1417651597.100174] pan_tilt_port: No motors found.
================================================================================REQUIRED process [dynamixel_manager-2] has died!
process has died [pid 3327, exit code 1, cmd /opt/ros/indigo/lib/dynamixel_controllers/controller_manager.py __name:=dynamixel_manager __log:=/home/pavithran/.ros/log/68403748-7b49-11e4-b3a3-ac7289859e59/dynamixel_manager-2.log].
log file: /home/pavithran/.ros/log/68403748-7b49-11e4-b3a3-ac7289859e59/dynamixel_manager-2*.log
Initiating shutdown!
================================================================================
[dynamixel_manager-2] killing on exit
[rosout-1] killing on exit
[master] killing on exit
shutting down processing monitor...
... shutting down processing monitor complete
done

i also tried changing the baudrate to 1000000.

how do i overcome this error?

Thank you...