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2019-07-15 07:58:23 -0500 commented answer Schunk LWA4P initialization problem with ros_canopen

Did you notice some bus off on your can interface while you had your spring contatcs throuble ? Glade your solved your

2019-07-15 07:58:03 -0500 commented answer Schunk LWA4P initialization problem with ros_canopen

Did you notice some bus off on your can interface while you hade your spring contatcs throuble ? Glade your solved your

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2019-06-20 01:52:40 -0500 commented question Schunk LWA4P initialization problem with ros_canopen

Hello , did you try to start just the driver "canopen_motor_node" and manualy spawn your controller ? with rqt if it's

2019-04-05 09:20:06 -0500 commented question ROS_CANopen RPDO timeout

According to what I can read it's a "Life guard error or heartbeat error" emcy code 0x8130. you might increase your hear

2019-03-21 02:56:15 -0500 asked a question rqt_publisher "error evaluating as list" with uint8[4] message

rqt_publisher "error evaluating as list" with uint8[4] message Good morning, Using rqt_publisher I can't find the prope

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2017-03-02 01:31:33 -0500 commented answer rqt topic monitor failled AttributeError cStringIO.StringO

To be more specific on what I've done (if someone want the full procedure), I have created a new workspace into witch I've cloned your link to the patch and then I have built it with this command :

catkin_make -DCMAKE_INSTALL_PREFIX=/opt/ros/indigo install

hope it's more clear

2017-03-02 01:18:23 -0500 asked a question rqt topic monitor failled attributeError

Hello every body,

A problem with rqt and topic monitor shows up this morning after an update/upgrade of my system (ubunut 14.04 with ros-indigo)

Since that upgrade I can't monitor any topic without having this error message :

[ERROR] [WallTime: 1488390882.559023] bad callback: <bound method TopicInfo.message_callback of <rqt_topic.topic_info.TopicInfo object at 0x7fafac18d1d0>>
Traceback (most recent call last):
  File "/opt/ros/indigo/lib/python2.7/dist-packages/rospy/topics.py", line 720, in _invoke_callback
    cb(msg)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/rqt_topic/topic_info.py", line 100, in message_callback
    self.sizes.append(buff.len)
AttributeError: 'cStringIO.StringO' object has no attribute 'len'

In addition :

  • Topics are still operationals since I can visualise them with rostopic echo
  • This error occur on many type of message (std_msgs/string, moveit...)
  • This error occur regardless the publishing node

Does anyone have some clues ? Concerning me it's look like some python related file or configuration have been corrupted...

Thank by advance.

here below some system's information

Python interpreter version : 2.7.6

System information

Linux version 4.4.0-64-generic (buildd@lcy01-27) (gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) ) #85~14.04.1-Ubuntu SMP Mon Feb 20 12:10:54 UTC 2017

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2017-03-01 15:37:19 -0500 commented answer rqt topic monitor failled AttributeError cStringIO.StringO

thanks !!! I have just dowload the patch and run the folowing commande :

catkin_make -DCMAKE_INSTALL_PREFIX=/opt/ros/indigo install

and it works again

Thanks again

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2017-03-01 14:19:57 -0500 commented question Qt Creator cannot find moveit headers

If you can move to ubunut 14.04 or 16.04 and to ros-indigo or kinect you can use the folowing ros_qtc_pluggin) to use qtcreator for ros developpement. It's quite simple to install and use

2017-03-01 14:17:38 -0500 asked a question rqt topic monitor failled AttributeError cStringIO.StringO

Hello every body,

A problem with rqt and topic monitor shows up this morning after an update/upgrade of my system (ubunut 14.04 with ros-indigo)

Since that upgrade I can't monitor any topic without having this error message :

[ERROR] [WallTime: 1488390882.559023] bad callback: <bound method TopicInfo.message_callback of <rqt_topic.topic_info.TopicInfo object at 0x7fafac18d1d0>>
Traceback (most recent call last):
  File "/opt/ros/indigo/lib/python2.7/dist-packages/rospy/topics.py", line 720, in _invoke_callback
    cb(msg)
  File "/opt/ros/indigo/lib/python2.7/dist-packages/rqt_topic/topic_info.py", line 100, in message_callback
    self.sizes.append(buff.len)
AttributeError: 'cStringIO.StringO' object has no attribute 'len'

In addition :

  • Topics are still operationals since I can visualise them with rostopic echo
  • This error occur on many type of message (std_msgs/string, moveit...)
  • This error occur regardless the publishing node

Does anyone have some clues ? Concerning me it's look like some python related file or configuration have been corrupted...

Thank by advance.

here below some system's information

Python interpreter version : 2.7.6

System information

Linux version 4.4.0-64-generic (buildd@lcy01-27) (gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) ) #85~14.04.1-Ubuntu SMP Mon Feb 20 12:10:54 UTC 2017

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