praskot's profile - activity

use the linear acceleration data from imu for the position I assume you mean integrating just the acceleration rea

Auto generation of ros messages: Cmaklists add_message_files not detecting variable Hi, I'm autogenerating ros-messages

Not sure, sorry.

Hi,

I'm would like to set up two loops at different frequencies on a system (like raspberry pi3). I'm trying to decide the optimal way to set up my code with the least latency in data transfer between the two loops and least computation. Here are two options I thought of,

1. Two different ros-nodes each with different loop rates and using ros-msgs to communicate between these loops. -With the ros-nodes options, the loop rates are pretty consistent but there is latency in the data transfer.

2. A class with two functions run at different loop rates using ros::Timers. Class variables used to transfer the data between the functions. -Using the ros::Timers, even though no latency in the data transfer, loop rates are not quite consistent.

What is the better option, or are there any other better options? Is multi-threading a better option?

Also, it is possible to share data between two ros-nodes without using rosmsgs/rosservice but by sharing variables/pointers between them?

Thank you - prasanth

Hi, the problem is it not with your CMakeLists; it's from the navigation package! If you look at catkin_package (here)

This is a C++ error, not really a ros issue. Have you included the move_base header file and linked it to the executable

Publishing, multiple small topics vs one large topic, at the same rate I'm trying to understand if there is any computat

Yeah, I just removed the line find_package(PCL 1.2 REQUIRED) and it worked for me. Are you facing the exact same error?

Based on the accepted answer here, these two options helped, Reducing the time_step from 0.001 to 0.0001 (obviously th

Based on the accepted answer here, these two options helped, Reducing the step time from 0.001 to 0.0001 (obviously th

Links disconnect in (custom) spherical joint in urdf.xacro Created a custom spherical joint using dummy links to simulat

sudo apt-get install ros-neotic-robot-localization Usually, I do sudo apt-get install ros-neotic-robot and then search

sudo apt-get install ros-neotic-robot-localization Usually, I do sudo apt-get install ros-neotic-robot and then search

sudo apt-get install ros-neotic-robot-localization Usually, I do sudo apt-get install ros-neotic-robot and then search

I'm trying to add an arcuo-marker (*.png file) to a simple model (box) in urdf. I realize there are quite a few posts related to this but I couldn't make them work for me. Can anyone point me in the right direction? Thank you

<?xml version="1.0"?>
<robot name="rrbot" xmlns:xacro="http://www.ros.org/wiki/xacro">

    <xacro:property name="PI" value="3.1415926535897931"/>
    <xacro:property name="mass" value="1" />
    <xacro:property name="length" value="1." />
    <xacro:property name="width" value="0.5" />
    <xacro:property name="height" value="0.2" />

    <!-- Base Link -->
    <link name="box">
        <collision>
            <origin xyz="0 0 ${height/2}" rpy="0 0 0"/>
            <geometry>
                <box size="${length} ${width} ${height}"/>
            </geometry>
        </collision>
        <visual>
            <origin xyz="0 0 ${height/2}" rpy="0 0 0"/>
            <geometry>
                <box size="${length} ${width} ${height}"/>
            </geometry>
            <material name="red"/>
        </visual>
        <inertial>
            <origin xyz="0 0 ${height/2}" rpy="0 0 0"/>
            <mass value="${mass}"/>
            <inertia ixx="0.1" ixy="0.0" ixz="0.0" iyy="0.1" iyz="0.0" izz="0.4"/>
        </inertial>
    </link>
    <gazebo reference="box">
            <material>YourMaterialName</material>  <!-- how should i include an image here -->
    </gazebo>
</robot>

how to add image to model.urdf.xacro I'm trying to add an arcuo-marker (*.png file) to a simple model (box) in urdf. I r

how to add image to model.urdf.xacro I'm trying to add an arcuo-marker (*.png file) to a simple model (box) in urdf. I r

where should the media folder be located?

is /media/materials/scripts/ absolute path?

I believe, one brute force method is, for (int i = 0; i<height*width; i++) { debMap.data.pushback(vi[i]); } I'm

I believe, one brute force method is, for (int i = 0; i<height*width; i++) { debMap.data.pushback(vi[i]); } I'm

Find the rest-state orientation (say q0), and rotate the accelerometer reading by that amount. accel_corrected = q0*a

Find the rest-state orientation (say q0), and rotate the accelerometer reading by that amount. accel_corrected = q0*a

If you see the norm of the linear_acceleration, norm(x: 1.93930334473, y: 0.0191536132812, z: 9.28710823975) = 9.4874,