GuillaumeB's profile - activity

There are also python executable files in dist-packages. I could understand that packages not using CMakeLists.txt but p

Why are installed ROS 2 humble python packages split in two directories Cross-post on robotics.stackexchange.com Since

Why are ROS 2 installed humble python packages split in two directories Since ROS 2 Humble on Ubuntu 22.04, I noticed th

Why are ROS 2 installed humble python packages split in two directories Since ROS 2 Humble on Ubuntu 22.04, I noticed th

Hi! Good question. I work for Canonical, the publisher of Ubuntu. I’m part of the robotics team. Snaps is one of the ma

joint_state_msg.name is a vector of string not a string. So you need to add a string to the vector rather than assign a

You could directly follow this tutorial: https://snapcraft.io/docs/build-on-docker using the official snapcraft image

The git repository doesn't seem to be available any more. Would it be possible to see the content of your package.xml?

Hello,

From what I have seen, there is some example of Micro-ros over serial. But all I have seen is one computer (or one MCU) communicating to one MCU.

I was wondering if it was possible for example to connect two MCUs on the same serial lines to one computer? So the computer would have only one serial port to communicate with two different MCUs (or even more!).

I know that Modbus-RTU allows to do this, but it's a rather old protocol that doesn't allow much flexibility. If it's not possible to use multiple MCUs on the same serial lines with Micro-ros, is there a way to build a multiple MCUs architecture without duplicating the serial port on the computer?

Thanks.

By serial, I mean the UART of the MCUs (It could be only UART, rs232 or rs485 etc.). What are the possibilities, then? R

Multiple Micro-Ros MCUs over the same serial Hello, From what I have seen, there is some example of Micro-ros over seri

In your case, I see 3 possibilities: Simply develop on your PC and compile on it to run tests, for example. And then s

In your case, I see 3 possibilities: Simply develop on your PC and compile on it to run tests, for example. And then s

Hello, I have a node that I am supposed to start as root. Before I was using catkin_make to compile and I was sourcing devel/setup.bash and everything was working perfeclty. But today I tried to use catkin_make install and to source install/setup.bash` and this time my node is crashing. it says:

error while loading shared libraries: libroscpp.so: cannot open shared object file: No such file or directory

I also tried with another node (a dummy one) with the same CmakeLists. And this is really the combination between install and root that seems to be the problem.

my launchfile:

<launch>
  <node name="bb_pigpio_node" pkg="bb_pigpio" type="bb_pigpio_node" launch-prefix="sudo -E">
    <rosparam command="load" file="$(find bb_pigpio)/config/bb_encoder.yaml" />
  </node>
</launch>

My CmakeLists:

cmake_minimum_required(VERSION 2.8.3)
project(bb_pigpio)

add_compile_options(-std=c++11)

find_package(catkin REQUIRED COMPONENTS
  roscpp
  std_msgs
)

###################################
## catkin specific configuration ##
###################################
catkin_package(
  INCLUDE_DIRS include
  LIBRARIES bb_pigpio
  CATKIN_DEPENDS roscpp std_msgs
)

###########
## Build ##
###########

## Specify additional locations of header files
include_directories(
  include
  ${catkin_INCLUDE_DIRS}
)

## Declare a C++ executable
add_executable(${PROJECT_NAME}_node src/encoder_node.cpp
                                    src/encoder.cpp)

add_dependencies(${PROJECT_NAME}_node ${${PROJECT_NAME}_EXPORTED_TARGETS} ${catkin_EXPORTED_TARGETS})

target_link_libraries(${PROJECT_NAME}_node
  ${catkin_LIBRARIES}
  pigpio
)
#############
## Install ##
#############

install(TARGETS ${PROJECT_NAME}_node
   ARCHIVE DESTINATION ${CATKIN_PACKAGE_LIB_DESTINATION}
   LIBRARY DESTINATION ${CATKIN_PACKAGE_LIB_DESTINATION}
   RUNTIME DESTINATION ${CATKIN_PACKAGE_BIN_DESTINATION}
 )

 install(DIRECTORY include/${PROJECT_NAME}/
   DESTINATION ${CATKIN_PACKAGE_INCLUDE_DESTINATION}
   FILES_MATCHING PATTERN "*.hpp"
 )

 install(DIRECTORY launch/
   DESTINATION ${CATKIN_PACKAGE_SHARE_DESTINATION}/launch
 )

 install(DIRECTORY config/
   DESTINATION ${CATKIN_PACKAGE_SHARE_DESTINATION}/config
 )

Thanks for your help

I see, you should keep the original EDS (At least the OD structure). The 402 Can standard is only followed by motor node

Did you just add a section in your EDS? The EDS is just a representation of how data are organized inside your device. Y

Did you just add a section in your EDS? The EDS is just a representation of how data are organized inside your device. Y

First I don't understand why your CANopen node should send the msg 707#00. That would be the boot-up message from your n

I am working on controlling a canopen device thanks to canopen_master. I got inspired by the canopen_chain_node but it seems that this node only use SDO protocol. PDO management seems to be implemented in the canopen_master but I wonder how to publish a PDO frame thanks to canopen_master (maybe directly change the data in the OD?).

Is there something that i missed?

Did someone have an example of a ros_canopen SDO publisher?

thanks!

You could have searched for it. just write gazebo_ros on google and this is the first link... https://github.com/ros-sim

Did you compile gazebo_ros package from source? because gazebo_ros pkg is probably still the one from ros kinetic - gaze

It tried in my side with a queue of 2000 msg and if I publish msg I can reach 50% of cpu usage but not before sending an

Is the process in your callback a long and heavy one? What kind of message are you using (simple Float32 or huge images)

have you tried with a queue of 1 for you subscriber?

hello everyone, I am new in ROS, and I would like to know the defference betwen octomap and voxel_grid ? I have looking for information on internet but I have find the same information for both of them. I have seen these videos about octomap and voxel_grid on youtube ( watch?v=y5tGI3Fln_4 and watch?v=y5tGI3Fln_4 )

If someone can explain the defference to me, or guide me to a webpage ?

thank you,

Guillaume

In Ros Control you need to understand basically 2 things: ROS controllers. Those are controllers already implemented f