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ROS (Robot Operating System) is a free, open-source robot software framework developed by Willow Garage.

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Calibrating Logitic C920 HD 1080p using ros kinetic

I am trying to follow the ROS monocular camera calibration for a USB camera I have, but the calibration routine fails when I try to run it. I was expecting to see an image like the one below, but I ...
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2answers
36 views

rosservice via Python

I have a drone which has certain services, say random.srv. I want to use this service via Python. Now I know that there is a page in ROS wiki that tells you how to create a service client in Python. ...
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Alternative to ROS? [closed]

This might be a tricky question, but having dug in deep with ROS I am noticing the complexity that one has to deal with. Simple Arduino programming is much simpler but of course can’t do many useful ...
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ROS: Sensor data via USB

Im working on a project and i want to use a sensor. I can plug in the sensor via usb. I do not need any driver for the sensor. My task is to have an access to the sensor data. I have followed the ...
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1answer
10 views

Is it possible to list all runtime dependencies for ROS

I've read this link: http://wiki.ros.org/kinetic/Installation/Source and have known that the command ...
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1answer
33 views

ROS: Human to Robot Mapping (Baxter)

I'm having some difficulties understanding the concept of teleoperation in ROS so hoping someone can clear some things up. I am trying to control a Baxter robot (in simulation) using a HTC Vive ...
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60 views

Invoking “make cmake_check_build_system” failed

I am getting an error while building ROS workspace using catkin_make. I am not sure but it seems to be related with anaconda. Here are the details:- ...
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39 views

Is ROS 2 due to replace ROS 1?

I have read ROS 2 docs and they did not give much clue on the subject. Anybody has more insight on the subject?
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47 views

CMakeLists.txt vs package.xml

I've read this link: https://answers.ros.org/question/217475/cmakeliststxt-vs-packagexml/ But still, I can't understand very clearly. When I try to compile ROS project with the command: ...
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28 views

ROS: joint_state_publisher dies when used in remote launch file

I've been trying to run robot_state_publisher and joint_state_publisher on a remote TX1 running Ubuntu 16.04 and ROS Kinetic. When running the node from a local launch file (manually ssh into the ...
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1answer
59 views

Why adding odometry data as control vectors to EKF-Monoslam algorithm fails?

I am working on EKF-MonoSlam (Davson) method for the mere input as a webcam, (it works "fine" if we calibrate and use reasonable sigmas) , and I am trying to add the odometry of some dataset (as ...
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27 views

publishing on rostopics

I want to publish via terminal a particular message format - sensor_msgs/Joy. However, every format I use seems to be wrong and I cannot understand how it is meant to be written on the terminal. On ...
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46 views

Are both of C++ and Python necessary in ROS

I'm a newbie on ROS and I'm trying to figure out how ROS works so I'm installing ROS from source. I've found that most of ROS packages contains two kinds of codes: C++ and Python. For example, here ...
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14 views

accessing serial and ethercat devices

I want to, ask is accessing all the serial devices/sensors eg. RS-422, RS-232 done in same way? And also is accessing all the devices in market with ethercat connection can be done in same way? For ...
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0answers
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Orientation problem between Gripper and Object ??

I am working on a pick and place project using ROS & MoveIt!, I wrote my own pick and place functions which generate grasp poses according to the pose of the object and then automatically picks. (...
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27 views

Reliable IMUs for ROS

I'm having problems in finding reliable IMU's in ROS. So far, I have tried the UM7 and the myAHRS+ with no luck. The first one, keeps resetting its magnetic reference and the second one works well but ...
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1answer
26 views

Turtlebot3 Burger - XBOX360 Controller

I am using ROS on the Turtlebot3 and try to teleop the robot with an XBOX 360 controller without success. I'm already able to teleop the robot via keyboard. Setup: Ubuntu 16.04 ROS Kinetic What I'...
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27 views

Add image onto box in URDF file

I'm trying to display an image on top of a box in a .urdf file. How could I achieve this?
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18 views

remote 3d slam with limited sensing and bandwidth

I'm trying to implement a 3d visualization for a remotely operated robot, which will be equipped with either stereo grayscale cameras or one grayscale camera and a line striping system that can ...
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2answers
67 views

Ackermann Motion Model Does not Drive in an Arc, but Turns on the Spot

Im trying to implement an ackermann motion model which estimates the x,y and theta for a robot I have. I have a gazebo simulation running which publishes a steering angle for the virtual tricycle ...
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0answers
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DSO_ROS is not giving right coordinates after taking turn (left/right)

Hi all , i got stuck in a problem and really need your help. Goal: I want to move little Toy vehicle autonomously (localization and mapping) and want to get distance covered by vehicle using DSO in ...
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1answer
27 views

Ontology/marketplace of robotics components and integration environment (BPEL or CAD for robotics)?

It should be possible to take the formal description of robotics components (in form of ontology, formal API descriptions or other kind of formal specification of the capabilities and requirements of ...
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0answers
26 views

ROS: TurtleBot3 motors runs 60 seconds after message is seen in topic /cmd_vel

I am running ROS Kinetic, on a Turtlebot3 Burger with a Raspberry Pi3. The goal here is to remotely control the Turtlebot from another Raspberry Pi. The remote controller Pi sends movement ...
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1answer
25 views

Better way to use info. received from ROS subscriber nodes

I want to use information together received from the different ROS subscriber nodes. One way I think of is to make separate callback functions for each subscriber node and then receive messages from ...
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1answer
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How can I access the cliff sensors on an iRobot Create 2 via ROS/ Python?

I have an iRobot Create 2 and am currently using the create_autonomy package. Currently, they have cliff sensors as a "planned" feature. I see in the documentation that there are 4 cliff sensors (...
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2answers
103 views

RViz: How to Visualize a Voxblox Mesh as a MarkerArray?

I am currently trying to run the test cow and lady dataset with Voxblox. The process appears to execute properly in the terminal, but I cannot view the mesh in RViz. When I try to add the topic <...
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Turtlebot 2 dimensions

I am trying to drive the differential drive kinematics of Turtlebot 2. However, I couldn't find the distance between 2 wheels on the datasheet. I'd appreciate if anyone could provide me this dimension....
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1answer
25 views

how to write a uav teleop code?

I'm currently working on a teleoperation code for crazyflie. I'm not using a joystick, but I'm using leapmotion and I'm trying to understand how they code for a joystick in order to implement the same ...
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1answer
36 views

SE3 composition operator gives unexpected results

Given Data and Algorithm I have a stream of SE3 poses supplied by a basic wheel encoder odometry through ROS message passing system. Odometry publishes data in traditional to ROS ENU coordinate frame ...
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1answer
18 views

Main not defined package python issue

My apologies but I've run out of ideas. I'm very new to python and stuck trying to execute the following code from this tutorial: ...
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36 views

MATLAB ROS Communication Issue: The following nodes should be connected but aren't

I have both MATLAB and ROS installed on a SINGLE Linux machine. I am trying to publish data from MATLAB over a rostopic and echoing it in the terminal to view it. No matter, however, I play with URIs ...
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list of robotics framework running over xenomai

Can anyone tell me the list of robotics framework or softwares which can run on xenomai patched kernal like orocos? I was learning orocos this days in normal gnulinux kernal, but after i patch xenomai ...
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26 views

warning: target request linking to directory

Im trying to build rtt package of orocos-toolvhain by using cmake .. command inside build folder. when i do so i'm getting below warning. ...
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install orocos-toolchain in xenomai pathced linux?

Can anyone tell me the proper way or give me link to install orocos-toolchain on xenomai patche linux? I have patched xenmai with linux kernel in my system and anslo when i enter "xeno lateny" i an ...
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Which Kinect to use for robotic arm pick and place application with object detection?

I am building a robotic arm for pick and place application. The robot is going to recognize several objects using the RGB feed from Kinect (will use a model such as YOLOv2 for object detection, ...
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59 views

Required library XENOMAI NOT FOUND

I am following this tutorial to install orocos in my system with ubuntu 16.06, xenomai 3.0.5. But i'm getting error: ...
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Kalman filter for slow ground vehicle with RTK

I have been using dual RTK receivers for my tractor projects. This gives me reliable position, heading, and tilt at low rates (10 Hz). I recently began working with an INS (an Advanced Navigation ...
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36 views

undefined reference to KDL::Rotation::Quaternion

I am using orocos toolchain 2.9, ros kinetic, ubunt u16. ...
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1answer
115 views

Adding ROS to Raspberry Pi car and teleoperation

I just completed a Raspberry Pi car setup shown in the image below. With my car now assembled, I can run a simple Python script put the necessary GPIO pins HIGH or LOW and moves the car around ...
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PixHawk I/II not working in 'Rover' mode (firmware issue?)… HELP!

We are working in a new agricultural rover, and we opted for PixHaw-II+ROS+MavLink platform as a good control alternative. However, our project is stuck as the PixHawk seems to work only when it is ...
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17 views

controller-youbot: call ros::init() error

I am trying to run run the controller-youbot package from this link. i have build this package succesfully. Now when i try to run the deployer as u can see below it shows some error. i don't know from ...
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330 views

Unable to install ROS kinetic on Ubuntu 16.04

I am following instruction here. When I try to do the full install sudo apt-get install ros-kinetic-desktop-full I am getting this error:- ...
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Gazebo Force Model Incorrect

If I use the Gazebo7 UI to apply 100N of force along the X axis to a 1Kg sphere it should go flying, right? Creating a 1Kg primitive sphere and applying 100N through the UI makes it move 1m over 18 ...
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rtt-exercise building error-orocos-toolchain

I am using ros kinetic in ubuntu 16.04. My first error is: ...
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212 views

ROS Gazebo Odometry Issue

I am setting up a Gazebo model for use with the navigation stack. I have been reading the Navigation Tuning Guide and am confused about the lidar data in the odom frame. I would think that the tuning ...
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18 views

Error mgs during multi vehicle simulation with launch file

I followed the instruction as mentioned here. when I run the last command to launch environment works fine for default programme but when I added code for one more drone (UAV1 iris_3) and run ...
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34 views

Finding transformation matrix between two coordinate systems

This probably might be a trivial question but I'm kinda new to the scene. I've got an object in a simulation that is at its origin Ps[Xs,Ys](to keep things simple for me, I am considering a 2D space ...
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2answers
239 views

Is a virtual machine with ros-kinetic available anywhere?

I want to learn ros-kinetic from a virtual machine. I found that ros-indigo is available from nootrix; similarly, is there a ...
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216 views

install ROS on ubuntu 17

which distribution of ROS should I install on Ubuntu 17 I have searched in ros distributions wiki but couldn't find any specification and I also found that ROS Kinetic Kame is not suitable for ubuntu ...
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Custom camera projection model in Gazebo simulation?

is anybody know if there is any way to simulate vision perception using our own-defined camera projection model in Gazebo instead of using the pinhole or wide-angle type provided by the Gazebo ...