luc's profile - activity

Check out the planning scene documentation here: https://ros-planning.github.io/moveit_tutorials/doc/planning_scene_ros_

Please rephrase your question and add some pictures and we might be able to help you out better.

@Usui I'll check out that question. If this answer helped you, please mark it as correct!

Please mark my answer as correct if you find that it has helped.

The difference between SLAM and a standalone mapping and standalone localization package can be thought of like this S

The difference between SLAM and a standalone mapping and standalone localization package can be thought of like this -

They must have two separate AMCL processes running to localize the two robots. You may be able to use a container appro

Having multiple robots on the same roscore is a real tricky challenge. I'd recommend looking into how to solve that pro

Hi Iman, Looks like there is a version of open_karto that is inside the nav2d package on the ROS wiki: http://wiki.ros

Just the title, really.

It doesn't seem to effect anything when I see the segfault being reported, but it doesn't seem like it should happen. Moreover, when I close the RViz window using the (x) button in the top left, Ubuntu sometimes tells me "Sorry, RViz has crashed!" when I, well, made it 'crash'...

Hi ROS friends,

I'm having an issue where when I get my const sensor_msgs::ImageConstPtr &msg in my callback function, and do a cv_ptr = cv_bridge::toCvCopy(msg, sensor_msgs::image_encodings::RGB8); where cv_ptr is a cv_bridge::CvImagePtr, and try to do anything with the cv_ptr->image, the line where I do toCvCopy segfaults. When I leave the pointer alone and maybe access its contents or something elsewhere in my class, it's seemingly fine... I'm extremely confused.

Here's some of my real code:

void CNNLocalizer::imageCB(const sensor_msgs::ImageConstPtr &msg)
{
  cv_bridge::CvImagePtr cv_ptr;

  try
  {
    cv_ptr = cv_bridge::toCvCopy(msg, sensor_msgs::image_encodings::RGB8);

    ROS_INFO("Attempt!");
    cv::Mat image = cv_ptr->image.clone();
    ROS_INFO("Success!");

    image.convertTo(g_most_recent_image_, CV_32FC3);

    g_img_height_ = msg->height;
    g_img_width_ = msg->width;

    g_got_image_ = true;
  }
  catch (cv_bridge::Exception &e)
  {
    ROS_ERROR("Failed converting the received message: %s", e.what());
    return;
  }
}

If I get rid of the business where I try to clone the cv_ptr->image, there is no segfault... Any tips or tricks? Am I misunderstanding how things are working here...?

Edit: I am running my camera data through a looping rosbag with --clock enabled.

me too! thanks!

Turns out I didn't have ros-indigo-joint-trajectory-controller installed. Oopz.

Do a sudo apt-get install ros-indigo-joint-trajectory-controller and have a nice day.

Also - the support forum for GEAR seems to be only available to OSRF employees: https://groups.google.com/a/osrfounda...

Hi,

I'd normally open an issue against osrf/gear; but there doesn't seem to be an issues tab on the Bitbucket repository.

I'm having some issues launching the GEAR examples. Namely, when I do roslaunch osrf_gear sample.launch, gazebo opens with the simulation but the arm seems to appear on the ground and only moves very slowly.

I also get these error messages when launching:

[ERROR] [1472745023.718771045, 0.001000000]: Could not load controller 'ariac/arm' because controller type 'effort_controllers/JointTrajectoryController' does not exist.

[ERROR] [1472745023.718824000, 0.001000000]: Use 'rosservice call controller_manager/list_controller_types' to get the available types

Error when loading ariac/arm

[ERROR] [1472745023.728961885, 0.009000000]: Could not start controller with name ariac/arm because no controller with this name exists

I thought it may be as simple as me missing effort_controllers but I seem to have them installed already. It seems as if the controller plugin is not existent?

For reference, I wrote this script to do my environment setup so this is what I am using: https://github.com/cwru-robotics/cwru...

Thanks in advance for any help anyone may be able to give.

-Luc

try installing ros-indigo-rosserial-arduino

What version ROS do you have on your desktop? What version of rosserial-arduino do you have?

If you need any reference for using wiring_pi with ROS, you can check out my project here: https://github.com/lucbettaieb/origam...

Yeah, when I did it, I had to do su root, enter my password, then it worked.

This was very helpful; but be sure to use the direct path to your wiringPi folder you cloned in the FIND_LIBRARY command in order for full functionality to actually work.