ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange
Ask Your Question

Tomas yuan's profile - activity

2022-01-25 12:53:15 -0500 received badge  Famous Question (source)
2020-02-12 10:53:56 -0500 received badge  Notable Question (source)
2020-01-08 10:59:51 -0500 received badge  Famous Question (source)
2019-05-20 01:25:29 -0500 marked best answer robot_upstart: nodes don't work well

I use robot_upstart to start the robot.In the startup.launch file ,I launch only one node which I called myrobot_node . Here is the node content.image description. In this node, l launch a launchfile. However , I can see all nodes are running when I userosnode list.But when I test the nodes , I find some are not working well .For example , in one node, I usesystem("echo 666666 | sudo -S reboot") to reboot the system .However ,it didn't respond. And if I rosrun robot_upstart myrobot_node directly,things seems ok. what's wrong ? is there any problem with the function system()?

2019-03-26 09:30:35 -0500 received badge  Famous Question (source)
2019-03-26 09:30:35 -0500 received badge  Notable Question (source)
2018-11-13 20:42:48 -0500 received badge  Popular Question (source)
2018-09-16 10:04:00 -0500 edited question Laser scan doesn't match the map when use amcl?

Laser scan doesn't match the map when use amcl? When the robot rotates 180 degrees in place, for example,from 0 degree t

2018-09-16 10:03:08 -0500 asked a question Laser scan doesn't match the map when use amcl?

Laser scan doesn't match the map when use amcl? when the robot rotates 180 degrees in place, for example,from 0 degree t

2018-09-16 10:03:05 -0500 asked a question Laser scan doesn't match the map when use amcl?

Laser scan doesn't match the map when use amcl? when the robot rotates 180 degrees in place, for example,from 0 degree t

2018-08-08 01:59:07 -0500 marked best answer How to set the initial pose manually in amcl?

The amcl_node initial the pose by using initial_pose_sub_ = nh_.subscribe("initialpose", 2, &AmclNode::initialPoseReceived, this); I was wondering where does this message pub ? And is there anything I should notice when I set the initial pose manually.

2018-08-01 08:46:20 -0500 received badge  Notable Question (source)
2018-07-20 00:45:20 -0500 received badge  Famous Question (source)
2018-06-15 17:15:26 -0500 marked best answer How to monitor all nodes works well ?

There are some nodes work together ,I want to monitor all nodes . Avoid one or some of these nodes are broken or died,how to write a script or something to reach this goal ? Does ros have any mechanisms or solutions?

2018-05-23 04:10:33 -0500 marked best answer can't use roscd to find package?

First ,I create a workspace ,then create a package ,and things all go right . Then I creat my second package in the same workspace ,and catkin_make ,but I can't roscd the second packgage! I can roscd the first package!

2018-05-09 19:56:09 -0500 received badge  Notable Question (source)
2018-05-01 12:34:54 -0500 received badge  Famous Question (source)
2018-03-27 04:19:59 -0500 commented answer How to set the initial pose manually in amcl?

ok,thank u

2018-03-20 01:45:42 -0500 received badge  Popular Question (source)
2018-03-19 20:04:22 -0500 asked a question robot_upstart: nodes don't work well

robot_upstart: nodes don't work well I use robot_upstart to start the robot.In the startup.launch file ,I launch only on

2018-01-28 03:23:22 -0500 received badge  Famous Question (source)
2017-12-28 02:09:27 -0500 received badge  Notable Question (source)
2017-12-11 02:06:48 -0500 received badge  Popular Question (source)
2017-12-08 07:23:04 -0500 asked a question How to set the initial pose manually in amcl?

How to set the initial pose manually in amcl? The amcl_node initial the pose by using initial_pose_sub_ = nh_.subscrib

2017-12-04 04:04:29 -0500 received badge  Notable Question (source)
2017-12-01 19:18:22 -0500 marked best answer how to launch a file when open the system Ubuntu?

I want to rolaunch a launch file when i start the Ubuntu system automatically,how can I realize this?

2017-12-01 19:18:22 -0500 received badge  Scholar (source)
2017-12-01 19:15:19 -0500 received badge  Supporter (source)
2017-12-01 19:14:36 -0500 commented answer how to launch a file when open the system Ubuntu?

it works !

2017-12-01 18:36:56 -0500 commented answer how to launch a file when open the system Ubuntu?

I would have a try , thank u :)

2017-12-01 18:36:24 -0500 commented answer how to launch a file when open the system Ubuntu?

OK, thank u for you advice