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ROS1 Noetic Custom messages - Command line publish char[]/uint8[] support

I have a custom ROS1 Test.msg message which I use in roscpp Noetic: uint8[] a uint8[] b I use uint8[] to represent strings, because I can't use simple string type ...
Enikő's user avatar
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franka_ros message meaning

Has anyone ever tried to understand the meaning of each parameter in FrankaState.msg? After reading the official documentation, I only understand some of them, such as ...
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How to convert a ROS message file to an IDL file?

What is the terminal command to convert a ros message file to an idl file? Originally posted by StewartHemm74 on ROS Answers with karma: 46 on 2022-05-18 Post score: 0
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Problems importing ROS messages (ROS Noetic)

I am writing a code in Python to create a node to subscribe to a topic, however, I am having a little problem with the libraries, when I write the messages that I need to import, it appears in VSCode ...
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rospy message_converter outputs zero while in the terminal I got different output for the same topic

ROS Kinetic Ubuntu 16.04 Python 3.5 I am using diff_drive_controller to publish rwheel_angular_vel_motor and lwheel_angular_vel_motor topics. My goal is to take messages published by those topics and ...
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Not receiving any callback for synchronized PointCloud2 and Robot EndpointState

I am trying to receive data from two different publishers as listed below- Message Type: baxter_core_msgs::EndpointState. Topic Name: /robot/limb/right/endpoint_state Message Type: sensor_msgs::...
ravi's user avatar
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2 answers
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why my listener can't get the published data?

Dear friends: I have built two nodes :main and listener. The main nead to read (x,y,z) from a device and publish to the listener. The main code can read the data but the listener can't get the ...
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ROS message subfolder

Hi, I noticed that ROS does not correctly see message files in subfolders of the "msg" folder. The add_message_files command can take a DIRECTORY command which works partly: ...
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can't use push_back for a array ros message in arduino

Arduino code: ...
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1 answer
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can't find ros message API ducouments

hi, I currently can't find any API documents about ros messages like std_msgs, mavros_msgs...ect, including all member functions, class definitions or structures. It suppose be there, but I can't ...
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1 answer
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how to use share_ptr for self-define ros message

Hi, I want to define a share_ptr for a self-defined ros message in one node for zero copy process. Any suggestions will be appreciated. Thanks. Originally posted by crazymumu on ROS Answers with ...
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error: expected class-name before ‘{’ token

Hi there ! I try to compile a package that I found in the internet but I still get this error: ...
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Convert Protobuf Message to ROS Message

Hi, i just got the issue, that my incoming message (via an external libary) is in Protobuf 2.5 format. i got those .proto files and let them generate in catkin_make now i need a gateway function cause ...
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1 answer
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How to read a value from a ros message?

Dear friends, I am new in ROS, I am usinig CMVISION package, and the tos topic which I need is " /blobs ", with type "cmvision/blobs" $ rosmsg show cmvision/Blob uint32 red uint32 ...
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2 nodes publishing on same topic - merge?

Hello, I have a robot description (urdf file) where the joint state publisher is publishing for all the non-fixed joints a message. I have 4 such joints which are published on topic /joint_states. But ...
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