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2019-10-17 04:07:19 -0500 commented question Building FastRTPS fails, because of an error in foonathan_memory_vendor when cross-compiling for armhf

Whoops my bad. I do think however that it is easier to find people with the same problem here. Whereas just posting the

2019-10-17 03:58:37 -0500 commented question Building FastRTPS fails, because of an error in foonathan_memory_vendor when cross-compiling for armhf

I also opened an issue on the eProsima github for this here: https://github.com/eProsima/foonathan_memory_vendor/issues/

2019-10-17 03:50:33 -0500 asked a question Building FastRTPS fails, because of an error in foonathan_memory_vendor when cross-compiling for armhf

Building FastRTPS fails, because of an error in foonathan_memory_vendor when cross-compiling for armhf When I try to cro

2019-10-11 05:14:22 -0500 commented question ROS2 Architecture (rclcpp, rcl, rmw)

I have not worked with liveliness or deadlines, so I wouldn't know exactly how to implement this sorry. I've actually be

2019-10-11 04:43:20 -0500 commented question ROS2 Architecture (rclcpp, rcl, rmw)

What is your goal? If you just want to use ROS2 and play with QoS settings, I would advise you to look at some tutorials

2019-10-11 04:29:10 -0500 commented question ROS2 Architecture (rclcpp, rcl, rmw)

https://design.ros2.org/articles/ros_middleware_interface.html It could be useful for you to have a look at this. Normal

2019-10-11 03:33:13 -0500 commented question ROS2 Architecture (rclcpp, rcl, rmw)

You can set QoS settings when creating a publisher or subscriber something like this: static const rclcpp::QoS qos = rc

2019-10-11 03:29:36 -0500 commented question ROS2 Architecture (rclcpp, rcl, rmw)

Theoretically you can work on top of whichever layer you want. For the average ROS user I think working on the rclcpp la

2019-10-09 04:11:25 -0500 commented question Covariance matrix for custom odomtery messages

I understand that this does not directly answer your question, but it gets you an idea of how you would have to obtain a

2019-10-09 04:05:34 -0500 commented question Covariance matrix for custom odomtery messages

Covariance can decrease by adding sensors or any other information. Suppose we add a sensor to the previous example that

2019-10-09 04:03:15 -0500 commented question Covariance matrix for custom odomtery messages

Are you aware of what the covariance matrix represents? Basically, during localization you are uncertain of a lot of thi

2019-10-09 03:42:01 -0500 commented question Migration ROS1 to ROS2

Otherwise, you'll just have to dive deeper into ROS2 and make the proper API changes to the source code in your package

2019-10-09 03:39:20 -0500 commented question Migration ROS1 to ROS2

If you do not want to migrate the package you could look at https://github.com/ros2/ros1_bridge . This package makes the

2019-09-23 09:38:41 -0500 commented question Are there any implementations of ROS-2 using DDS ans FreeRTOS on microcontrollers ?

The Micro-ROS guys may be able to help you. I think you have a better chance of getting into contact with people by post

2019-09-23 09:28:58 -0500 commented question Restrict ROS 2 to Localhost

Right now it does not support transient(-local) durability so you may have to change your QoS profile to VOLATILE for d

2019-09-23 09:26:33 -0500 commented question Restrict ROS 2 to Localhost

I'm confused what you are trying to achieve? If you want to use intra-process communication have a look at this PR https

2019-09-23 09:25:44 -0500 commented question Restrict ROS 2 to Localhost

I'm confused what you are trying to achieve? If you want to use intra-process communication have a look at this PR https

2019-09-23 04:38:42 -0500 commented question subscribe old message

If the 3 robots together have to come to a conclusion about who does what, you could maybe have a look at ROS2 where you

2019-09-23 04:35:38 -0500 commented question subscribe old message

Do you have to implement it like this, or can you make a separate node that determines who does what whilst monitoring a

2019-09-23 04:26:40 -0500 commented question quaternions tf2?

For me quaternions are a useful tool that guarantees you don't run into problems like Gimbal lock. Euler angles however,

2019-08-30 09:31:49 -0500 answered a question [Ros2] Package Binaries

I have no experience with using ROS2 on windows but the installation guide tells you how to build ROS2 from source: http

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2019-08-28 09:52:50 -0500 commented question No data from SICK S300 in ROS

Perhaps you could try to contact the cob_sick_s300 package maintainer or the people from SICK. Have you verified that th

2019-08-28 09:51:28 -0500 commented question No data from SICK S300 in ROS

Perhaps you could try to contact the cob_sick_s300 package maintainer or the people from SICK. Have you verified that th

2019-08-28 06:33:16 -0500 commented question UKF vs EKF performance

This is true but I don't think the difference between UKF and EKF is of that magnitude (I could be wrong here), if one w

2019-08-28 04:56:05 -0500 commented question UKF vs EKF performance

For most localization methods I would expect these things to be use-case specific. It is probably true that you can rank

2019-08-28 04:01:11 -0500 commented question No data from SICK S300 in ROS

If you are not getting data using echo then there is probably something wrong with your configuration (are you sure thin

2019-08-27 10:44:19 -0500 commented question No data from SICK S300 in ROS

You could try adding a static tf broadcaster: http://wiki.ros.org/tf2/Tutorials/Writing%20a%20tf2%20static%20broadcaster

2019-08-27 09:47:27 -0500 commented question No data from SICK S300 in ROS

You are free to pick the name to be whatever you want. The pkg and type need to reference the correct ros package and ex

2019-08-27 09:37:39 -0500 commented question No data from SICK S300 in ROS

Here is an example for a different type of laser, maybe you can edit this with your values/parameter names and see if th

2019-08-27 09:37:28 -0500 commented question No data from SICK S300 in ROS

Here is an example for a different type of laser, maybe you can edit this with your values/parameter names and see if th

2019-08-27 09:34:53 -0500 commented question No data from SICK S300 in ROS

Rviz says the frame laser does not exist. So that is the problem right now. Your data is being published, but rviz needs

2019-08-27 09:31:58 -0500 commented question No data from SICK S300 in ROS

Rviz says the frame laser does not exist. So that is the problem right now. Your data is being published, but rviz needs

2019-08-27 09:17:47 -0500 commented question No data from SICK S300 in ROS

Have you tried setting Global options>fixed frame to "laser" instead of "map". If that does not work then you'll have

2019-08-27 09:06:27 -0500 commented question No data from SICK S300 in ROS

If you get this to work you can then in rviz go to "file>save config as" and save your rviz configuration. This confi

2019-08-27 09:01:26 -0500 commented question No data from SICK S300 in ROS

In Rviz you can press the add button in the bottom left and then add a LaserScan. The LaserScan will then be in the Disp

2019-08-27 07:16:25 -0500 commented question No data from SICK S300 in ROS

The link I gave you was how to bringup a complete robot setup. That setup happened to be using the sick s300 laser that

2019-08-27 07:16:15 -0500 commented question No data from SICK S300 in ROS

The link I gave you was how to bringup a complete robot setup. That setup happened to be using the sick s300 laser that

2019-08-27 06:06:36 -0500 commented question No data from SICK S300 in ROS

https://github.com/ipa320/cob_robots/blob/kinetic_dev/cob_bringup/drivers/sick_s300.launch I was also able to find this

2019-08-27 06:01:42 -0500 commented question No data from SICK S300 in ROS

Have a look here for an explanation on roslaunch using XML: http://wiki.ros.org/roslaunch/XML

2019-08-27 05:27:46 -0500 commented question No data from SICK S300 in ROS

Can you show what your rviz looks like? It is possible you don't have rviz configured correctly.

2019-08-27 05:24:06 -0500 answered a question Visualise point cloud in real-time

Rviz shows that the fixed frame [map] does not exist. So either replace the fixed frame to the camera frame (Global Opti

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2019-08-14 06:35:43 -0500 commented question Is there a ROS 2 bag GUI?

I found a discourse discussion where someone made an online tool for inspecting rosbags for ROS 1. I asked about their i

2019-08-08 02:05:49 -0500 commented question run 64 nodes , cpu utilization becomes 100%

I know this is quite an old post but this might be an interesting read for the people who end up here: https://github.co

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2019-08-07 05:12:22 -0500 commented question Problems build ROS2 from source

Not sure if in any way related, but I encountered this: https://github.com/MartinCornelis2/dashing_build_fail , where in

2019-08-07 05:00:36 -0500 commented question rviz camera view shows image flipped 90 degree

https://answers.ros.org/question/329409/point-cloud-in-wrong-position-relative-to-robot/#329527 similar question here.

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