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2018-09-20 14:09:56 -0500 edited answer How to subscribe to uknown amount of topics with unknown type.

The ROS Master_API will probably be your friend. Please also look at #q260633, which covers parts of your question. Wit

2018-09-19 13:40:10 -0500 edited answer Gazebo simulation GPS fix

I could not find out quickly, how the rover model from Erlerobot generates GPS data, but you could try to use the simula

2018-09-19 13:39:34 -0500 edited answer Gazebo simulation GPS fix

I could not find out quickly, how the rover model from Erlerobot generates GPS data, but you could try to use the simula

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2018-09-19 13:35:17 -0500 edited answer Using mapviz gpsfix vs navsatfix

I believe Mapviz already supports NavSatFix. Try to compile the most recent version of Mapviz from Source, just to make

2018-09-19 13:27:16 -0500 commented answer How to subscribe to uknown amount of topics with unknown type.

Arrrr! (https://discourse.ros.org/t/answer-ros-questions-like-a-pirate-day-2k18/6058)

2018-09-19 13:22:35 -0500 edited answer How to subscribe to uknown amount of topics with unknown type.

The ROS Master_API will probably be your friend. Please also look at #q260633, which covers parts of your question. Wit

2018-09-19 13:14:47 -0500 answered a question How to subscribe to uknown amount of topics with unknown type.

The ROS Master_API might be your friend. Please also look at #q260633, which covers parts of your question.

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2018-09-19 13:02:20 -0500 edited answer Using mapviz gpsfix vs navsatfix

I believe Mapviz already supports NavSatFix. Try to compile the most recent version of Mapviz from Source, just to make

2018-09-19 12:48:55 -0500 edited answer Using mapviz gpsfix vs navsatfix

I believe Mapviz already supports NavSatFix. Try to compile the most recent version of Mapviz from Source, just to make

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2018-06-12 08:36:41 -0500 marked best answer Switching between controllers with ros_control / controller_manager

Is there an easy way to switch between different controllers for a single resource? I would like to control a joint of my Gazebo model either by effort_controllers/JointPositionController or effort_controllers/JointEffortController. I want to switch between these controllers during runtime by pressing a joystick button.

Right now, I make 4 service calls:

  1. Stop the current controller (by calling controller_manager/switch_controller)
  2. Unload the current controller (by calling controller_manager/unload_controller)
  3. Load the new controller (by calling controller_manager/load_controller)
  4. Start the new controller (by calling controller_manager/switch_controller again)

Is there an easier way to do that, like loading both controllers at the same time and only start/stop the corresponding controllers by a single switch_controller call? As the SwitchController Service has parameters for both start_controllers and stop_controllers, this seems to be supported somehow. But if I try to spawn both controllers in a launch file, I get a "resource conflict" error.

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2018-05-05 15:13:49 -0500 marked best answer How can I run ROS2 nodes in a debugger (e.g. gdb)?

Is there something like the --prefix argument from rosrun in ros2 (see #q222530)?

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2018-01-25 14:34:48 -0500 marked best answer Syntax of rqt_graph filters

I recently noticed, that you can use a wildcard character in rqt_graph to select node or topic names. For example "/imu*" would only show all nodes/topics which start with "/imu". Is there a way to logically link multiple filter expressions together, e.g. "Show all nodes, which start with '/imu' or '/move'"?

2018-01-25 14:34:44 -0500 commented answer Syntax of rqt_graph filters

Thank you! This works.

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2018-01-18 15:39:18 -0500 asked a question Syntax of rqt_graph filters

Syntax of rqt_graph filters I recently noticed, that you can use a wildcard character in rqt_graph to select node or top

2017-09-18 15:47:59 -0500 commented answer How can I simulate in rviz or gazebo

I am glad to hear, that you got your simulation and gmapping up and running. The Gaitech EDU tutorials might help you to

2017-09-15 15:44:01 -0500 commented answer Launching a node two times with same namespace

You are welcome. Every node you are running in your ROS environment has to have a unique name. You will have to take car

2017-09-15 15:16:15 -0500 commented answer Launching a node two times with same namespace

Have you replaced your launch file with my complete code example? Have you noticed, that I changed the names of the "ima

2017-09-15 15:15:42 -0500 commented answer Launching a node two times with same namespace

Have you replaced your launch file with my complete code example into your launch file? Have you noticed, that I changed

2017-09-15 09:53:18 -0500 answered a question Launching a node two times with same namespace

There is some redundancy in your launch file. How about that? <launch> <group ns="camera"> <node name

2017-09-14 10:04:35 -0500 edited answer etherCat communication

Please have a look at some previous Q&As, like #q260332, #q226843 and #q199494

2017-09-14 10:04:11 -0500 edited answer etherCat communication

Please have a look at some previous Q&As, like #q260332, #226843 and #q199494