New answers tagged ros-noetic
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Object recognition during slam
I think your idea to send the map to openCV sounds reasonable. Of course the mapping algo won't see a square against the wall. It will see the wall with square shapes areas sticking out and will see ...
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Depth Camera flickering
The frame-to-frame movement of points on the surfaces in the point clouds look like normal noise. The points move around a little but they are still very close to what appear to be flat surfaces.
The ...
- 3,244
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Accepted
Simple takeoff then do yaw rotation
To do this with your existing functions you can modify the position function to take a yaw value.
quaternion_from_euler(ai, aj, ak, axes='sxyz') takes a yaw value in radians for the ak parameter. You ...
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ROS: Execute action for every waypoint along moveit path
It seems like you're on the right track with your approach, but there's a simpler solution that you might not have considered yet. Since you're using MoveIt's ...
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Cannot install ROS noetic's nmea_msgs through Chocolatey on Windows
There aren't as many binary-installable packages on Windows/Chocolatey compared with what's available via apt on Linux. However, the ...
- 356
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rqt_graph is not working
Try doing a "clean build" of your catkin_ws. Python caches .pyc files in catkin_ws/devel/lib/python3/, and if you've updated your ros install using apt, ...
- 693
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Robot doing random jerks while moving using computeCartesianPath
I can't comment on MoveIt, but if you are trying to move through a singularity: this is physically not possible. In a singularity the robot loses one or more degrees of freedom, so you have to relax ...
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How to set workspace in MoveIt
I'm aware of two different ways to implement this:
add the obstacle(s) to your PlanningScene. The path planner should create a path that avoids collision with the object(s).
define Path Planner ...
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How to command ros_control joint commands other that publish to the /command topic of the joint
When using ros_control, you should typically use the FollowJointTrajectory action server provided by the ...
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1
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Accepted
Error fetching dependencies from Git repo
It looks like you didn't get the openmower submodules (the readme should be changed to mention those prominently)
...
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husky simulation installation, but there is an error about joystick
The log message "Error: couldn't open joystick" is not a serious problem and you can safely ignore the message.
As an enhancement, you can configure a real usb or bluetooth port for a real ...
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custom impedance control plugin, how to initialize impedance matrix
As far as I know, ROS parameters are restricted to single lists of numbers. So you could flatten and reshape the matrix, passing it in from the YAML as a single list of floating point numbers ...
- 356
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Is there a flag or member variable that I can access to indicated odometry lost in RTAB-Map?
The pose in the odometry topic will be invalid (quaternion with all 0s). Reference: https://github.com/introlab/rtabmap_ros/blob/d974c9a72c2234f61e51624c7066588275666946/rtabmap_odom/src/OdometryROS....
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How to disable dynamic reconfigure parameters?
EDIT: I did not see the ros-noetic tag at first. Below answer is for ROS 2.
You can easily define rules on parameters, e.g.:
Disallow a parameter to be changed,
Automatically also change other ...
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0
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Accepted
Hector slam mapping
after i replace 1000 from 10000 everything was fine
Glad you figured it out, but you'd be better off using the static_transform_publisher from the ...
- 693
1
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Saving PLY file without rviz
Try point_cloud_io write.
rosrun point_cloud_io write _topic:=/your_topic _folder_path:=/home/user/my_point_clouds
It saves a ply file per point cloud message, if ...
- 3,244
1
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Accepted
depth aligned capture doesn't yield same number of rgb and depth frames -- cv_bridge exception: '[16UC1] is not a color format. but [bgr8] is
Using
rosbag record -O mona_noetic.bag -a -x "(.*)theora(.*)|(.*)compressed(.*)"
instead of
...
- 183
4
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Robot model explodes in Gazebo
This is a famous crash in Gazebo, similar to the one shown below.
It is one of the confusing errors. To debug this issue, start the Gazebo with simulation paused. We can pause the simulation by ...
- 123
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Issues defining setCommandCB function for a 7 joint robot torque control
Regarding your implementation question, you can look at the existing effort_controllers/ JointEffortController to see what they did.
More generally, the ...
- 693
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cannot visulize /scan in rviz after conversion of depth image to laserscan
I think it is possible that it is because you are not able to subscribe to /camera_info. You could try remapping the ...
- 131
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Switching between 2 cameras (using opencv)
I found the solution and now it works every single time.
Code does not use any ApproximateTimeSynchronizer function.
...
- 11
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object inclusion inside the map
As an example of prior art:
Here's a guy that did it with Tensor flow and a kinect camera for the object and depth detection. YOLO and Realsense is not so different in application.
https://youtu.be/...
- 191
0
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Accepted
Trouble with creating an image_transport nodelet
About your build error: if you look at image_transport.h, you'll see that the advertise() and subscribe() are defined only for ImageConstPtr objects. That's why it won't build if you pass a ...
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Switching between 2 cameras (using opencv)
Welcome to Robotics Stack Exchange!
It would be better to share more information about the underlying use case, as it is unsure what you are trying to achieve. Nevertheless, it seems that you need ...
- 1,291
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object inclusion inside the map
Here is my idea :
Take the depth image provided by your camera
If you only want to detect objects (and not other obstacles), modify this depth image by setting pixels outside the objects bounding ...
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How to use smartphone IMU in ROS?
There was a recent thread on the ROS Discourse about a possible student project to develop this. The project didn't get started unfortunately, but still there are a lot of relevant references in that ...
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Accepted
no new messages for rostopic hz /camera/aligned_depth_to_color/image_raw in ros noetic inside docker
Your rs_camera.launch file is opening a hardware device, and the Intel-supplied code allows only one linux process at a time on the machine to open a particular ...
- 693
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How to use smartphone IMU in ROS?
I think you have the plan down - its the details of making it happen :-) You can also just send the raw data off the phone and then publish it via ROS on the main computer (if the phone isn't the main ...
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Gazebo launces empty with ros, Model not loaded
Just needed to add version to sdf tag and it works!
<sdf version="1.7">
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How to check explore_lite exited
https://github.com/hrnr/m-explore/blob/noetic-devel/explore/src/explore.cpp#L288-L293
I modified the function in the link above (I added my own publisher to the ...
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