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2023-05-25 07:40:27 -0500 | answered a question | Error Message for failed Service Call @Mimax I had the same issue where i was getting: ERROR: service [/service] responded with an error: b'' I found it wa |
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2021-06-21 07:05:01 -0500 | commented answer | TF vs TF2 (lookupTwist vs lookup_transform) Do you have any example code to implement this solution @tfoote? |
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2020-05-13 05:43:14 -0500 | asked a question | "map" topic not visible when running "indoor_slam_gazebo.launch" in hector_quadrotor "map" topic not visible when running "indoor_slam_gazebo.launch" in hector_quadrotor I am using the Hector Quadrotor Ind |
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2020-02-28 08:31:32 -0500 | marked best answer | How to Subscribe to Imu data and broadcast transform I have a UAV application and I am using Hector-SLAM for the navigation. I have got Hector-SLAM working with just the map, base link and laser frames but I would like to add a base_stabilised frame to read data from the IMU and correctly reference the base link. I have set up a static transform between the base_stabilised and base_link frames (as below) but I have not managed to vary this transform based on data from the IMU. The topic with the IMU data is: "mavros/imu/data" and the message type is "sensor_msgs/Imu". I have got the stabilized_to_link.py file to this stage but I don't know how to actually subscribe to the Imu data and create a transform from it. Please can someone help? Many Thanks! |
2020-02-28 08:31:26 -0500 | answered a question | How to Subscribe to Imu data and broadcast transform Although I have not written a python code to implement this myself, I did find the hector_imu_attitude_to_tf package was |
2020-02-28 08:26:45 -0500 | commented answer | Imu_attitude_to_tf_node Error: 'command not found' I'm afraid I'm not familiar with running C++ files so thank you for your explanation. I have now resolved the issue. Tha |
2020-02-28 08:19:35 -0500 | marked best answer | Imu_attitude_to_tf_node Error: 'command not found' I am attempting to convert data from the Pixhawk IMU to a transform broadcast using the "hector_imu_attitude_to_tf" node from the Hector SLAM repository (found at: link text ) However, when I run the file using: I get the following error message, with "command not found" listed 5 times, as well as 2 other errors: It has been suggested to me that this is a dependencies issue, however i have used Rosdep to install all dependencies with no luck. Is there something I am not seeing? I assume it is something I have not set up properly as I assume the code from the Hector-SLAM repository is working fine. Many Thanks |
2020-02-27 08:24:10 -0500 | commented answer | Imu_attitude_to_tf_node Error: 'command not found' That explains a lot! How do I build the package and start the node? I did run catkin_make, and also used "chmod +x imu_ |
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2020-02-26 09:56:11 -0500 | asked a question | Imu_attitude_to_tf_node Error: 'command not found' Imu_attitude_to_tf_node Error: 'command not found' I am attempting to convert data from the Pixhawk IMU to a transform b |
2020-02-26 06:32:17 -0500 | commented question | How to Subscribe to Imu data and broadcast transform Thanks for your suggestion. The file did originally contain a callback function and it prevented it from working which i |
2020-02-26 05:03:16 -0500 | commented answer | How to Subscribe to Imu data and broadcast transform Thank you for your answer. What do you mean when you say that the base_link frame has to go through a reduction in dimen |
2020-02-25 11:57:37 -0500 | asked a question | How to Subscribe to Imu data and broadcast transform How to Subscribe to Imu data and broadcast transform I have a UAV application and I am using Hector-SLAM for the navigat |
2020-02-07 06:25:56 -0500 | marked best answer | How to insert tf frames into HectorSLAM tf structure - using data from the Pixhawk 4 mini's IMU I am using HectorSLAM for a UAV application. I have setup HectorSLAM to work with just the base_link and laser frames as shown below. (Following these instructions: link text) This works for static mapping but obviously does not take into account the rotation and vertical position of the laser scanner. The question has 2 parts:
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2020-02-07 06:25:54 -0500 | commented answer | How to insert tf frames into HectorSLAM tf structure - using data from the Pixhawk 4 mini's IMU Thank you again! I'll work my way through that. I have managed to subscribe to the messages being published by the IMU w |
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2020-02-06 06:14:56 -0500 | asked a question | How to insert tf frames into HectorSLAM tf structure - using data from the Pixhawk 4 mini's IMU How to insert tf frames into HectorSLAM tf structure - using data from the Pixhawk 4 mini's IMU I am using HectorSLAM fo |
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2020-02-04 03:59:52 -0500 | marked best answer | How to combine HectorSLAM and RGB-D camera data to achieve 3D mapping? I represent a team of engineers from Lancaster University. We are attempting to combine 2D LIDAR data (preferably using HectorSLAM) and RGB-D camera data (as done by Technische Universität Darmstadt https://youtu.be/olGZv05RLHI) for an autonomous UAV mapping application. We are using AND RPLIDAR A2 scanner and a Realsense Depth Camera D415. The ROS distro is Kinetic. How could we achieve this and could it be performed using ROS on an Nvidia Jetson Nano? Can we run two SLAM algorithms concurrently (e.g HectorSLAM and ORB-SLAM), or do we need to combine the sensor data before applying SLAM? Is there any open-source code available to achieve this? Many Thanks. |
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2020-02-03 12:35:55 -0500 | commented answer | How to combine HectorSLAM and RGB-D camera data to achieve 3D mapping? Thank you for your fast and comprehensive response. This gives us everything we need to get started. Can I clarify what |
2020-02-03 08:34:23 -0500 | edited question | How to combine HectorSLAM and RGB-D camera data to achieve 3D mapping? How to combine HectorSLAM and RGB-D camera data to achieve 3D mapping I represent a team of engineers from Lancaster Uni |
2020-02-03 05:37:49 -0500 | asked a question | How to combine HectorSLAM and RGB-D camera data to achieve 3D mapping? How to combine HectorSLAM and RGB-D camera data to achieve 3D mapping I represent a team of engineers from Lancaster Uni |