Questions tagged [robot]
The robot tag has no usage guidance.
164
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Is a central CAN-Bus a reliable solution for controlling robot wheels?
I am working as a student on a 6 wheel robot project and have problems deciding what communication protocol to use for controlling the locomotion system.
I was thinking about connecting all the robot ...
0
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1
answer
16
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Mapping servo motor angles to 3d link angles
I have been programming for a 6DOF robot arm with forward and inverse kinematics functionality. The problem I am facing in my head is to how to correctly set different servo motor values to specific ...
- 3
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1
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42
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Aspiring to build a space rover from scratch. From where to begin?
What fundamental concepts, beginner-friendly resources, or online courses would you recommend for someone starting with little to no background in robotics?
At first, I want to build a an autonomous ...
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1
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28
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Why is admittance control better than impedance control for huma robot collaboration?
I have seen many papers that use admittance control for human robot collaboration but no one tells why admittance is the choice and not impedance. Is it something very trivial that I should know or ...
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26
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simulator for a cartesian(gantry) robot
I wanna simulate a cartesian(gantry) robot in a simulator and solve the forward and reverse kinematics. Is it possible with Gazebo or MOVEIT? which one and how? Or if you suggest any free software
...
- 3
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29
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What joint combination gives you an 6 DoF workspace?
If you want to have a 6 DoF workspace of your end-effector you need 6 joints.
But how exactly do the joints have to be ordered?
For instance:
A robot with 6 revolute joints where all the rotation ...
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1
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23
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My obstacle avoiding car doesn't work with dry cells
Ok, I am not a genius in such projects but, it is the first project I am doing in robotics.
The problem is that the wheels of the car doesn't continuously tend to rotate when I power the motor driver ...
1
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19
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Painting the spots robot visited: in Gazebo
I have a robot (let's say it is a simple 2-wheeled+caster wheel diff drive robot). It works as a vacuum cleaner of a sort: moves over the "world", leaving behind a band of "clean carpet&...
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Why do I need to go through edit model in Gazebo in order for my model to spawn correctly?
When I initially launch my robot in Gazebo, it breaks apart and every part is moving around.
As soon as I enter edit mode for my model it freezes in place, and then I can delete and launch the model ...
- 11
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31
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Calculate target orientation
I have the following setup:
I want to move the "Drill" frame to "Target1" with the opposite Z axis direction. I have calculated translation between "Target1" and "...
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20
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Understanding Virtual Velocities in Delta Robot Dynamics Modeling
I want to model the dynamics of a delta robot, and I came across this article. It utilizes the Newton-Euler method with virtual work to derive the equations. There's a section called Simulation ...
- 101
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293
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Controller manager not available in ROS2
I can visualize my robot on gazebo but I get an error when launch file is starting like below. How can I fix that?
Error:
...
gurselturkeri
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1
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1
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Have robot(wheeled) the move to creates a 2d maps
Hi have robot(wheeled) the move to creates a 2d maps the robot has imu encoder and ultrasonic sensors and Arduino till now i only know how to to move the robot by pub | sub but I don't know what to ...
Midorya
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1
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5
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correct model design for grasping (Moveit)
Hi!
I am relative new to ROS and Moveit. I am using ROS noetic. For a research project, I want to realize automated trajectory planning for an FANUC industrial robot for handling pipes with high ...
nicob
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1
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9
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MAXON Escon Motor Controller ROS
I have a mobile robot platform running with 4 Escon 50/5 drivers an 4 DCX motors. I have created my motor controllers .edc file via escon software; but I couldn't find a way to communicate with ROS to ...
mergen
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1
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2
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Error with real UR5e connected via 5G
I have script that controls UR5e using haptic device, it works perfectly connected directly using ethernet, but it doesn't work when i use 2 5G routers (arround 70ms ping). When i launch ur5e_bringup ...
Trelis98
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1
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6
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Spawn_model for gazebo.urdf files
Hi,
I want to edit the file turtlebot3_world.launch that's code is the following in Melodic:
...
Giuseppe_
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1
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2
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Subscribing to the wrong Topic
My problem is that I want to subscribe to the Topic "joy" but from a class.
Let's say that i have a class named My_Class.
As protected method i wrote the subscriber.
...
Slachcrash
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1
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60
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roslaunch: is neither a launch file in package
Hi, I'm using Kinetic and I'm trying to launch other's and examples codes but all roslaunch shows this message:
...
synapsido
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1
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3
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Simulation deteriorates over time, robot arms do not go to the same position
Hi! I'm currently running a ROS network (ROS Melodic, Ubuntu 18.04) using the ARIAC 2019 simulation interface. I have the competition going on a loop, and two UR10 arms that run on independent threads....
luna
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1
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2
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Universal Robot Arms, size changes in the robot description
I am trying to update warthog description, by attaching three universal robot arms(2 UR5, 1 UR3). I am following the second approach pointed here. I was succesfull in adding all the robot ...
Tahir M.
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1
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6
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Invisible robot model in Rviz
Hello, I'm new to rviz and I encountered a problem while i was trying to run project from this repo . When im working on Gazebo i can see a whole model of the robot but when i try to do the same on ...
asbird
0
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1
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2
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robot_localization package with custom sensor message
I want to know if i can use robot_localisation package with odometry messages and custom messages which i generate from my sensor. I am not using IMU, instead another sensor which gives me x and y. ...
enthusiast.australia
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1
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11
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Using Moveit with a robot arm on a gantry
I am trying out using moveit with a robot arm mounted on an xyz gantry. But I'm new to moveit and am unsure how best to build the model. The robot is an off the shelf UR-10 which I have a model for, ...
PeteMakesThings
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1
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22
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Oscillation using TEB local planner with car-like setup
I've come across other topics mentioning similar problems, oscillation when using the TEB local planner for a car-like robot. But nothing has helped me so far, this topic yet remains unanswered, which ...
mysqo
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1
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3
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Trajectory Length Problem
MISSION:
Plan from A to B, not colliding with obstacles, using all planners in OMPL and CHOMP. Compare the trajectories of those
planners.
SETUP:
I am using Moveit to plan for a 6 DOF articulated ...
cpetersmeier
0
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1
answer
2
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2d navigation robot setup dependency
So I am doing a 2d navigation and am using create_autonomy for irobot
I am following this tutorial
In it I need to create a package with dependency:
...
Usui
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1
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18
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Robot + Docker + ROS
Hello,
Currently I am working on a project which has following specifications:
A controllable robot base and
sensors
Velodyne LIDARS connected via Ethernet.
Few ros packages with a custom catkin ...
elementaryshr
0
votes
1
answer
14
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Ghost obstacles on costmap
Hi everyone,
Please give me some advices for this problem with ghost obstacles.
My mobile robot is working with ROS (Kinetic, Ubuntu 16.0.4) using Sick sensor. My robot uses 2 Sick sensor, one is in ...
Getchbold NT
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1
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1
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URDF File - robot jumps and makes small leaps
Hello,
I want to create a robot with two driving wheels and two caster wheels. As shown in this image :
I d’not know if it is well showen in the picture, the robot has two caster wheels (front and ...
hdd-robot
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1
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1
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Move It! polar robot configuration not moving second joint
Hi all! I'm fighting to create a polar robot configuration with Move It.
The polar robot has 3 joints: rotational, rotational and prismatic.
Polar robot http://www.robotpark.com/academy/PG/Spherical-...
jdeleon
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1
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28
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Load two urdf models in one launch file
Hello,
i'm trying to load two models in one lunch file. I have one file for a robot arm and one for the base, that is intended to carry the robot arm around. Each separated works but as i try to load ...
-LD-
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1
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4
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Robot oscillating before stopping if an obstacle found in ros navigation setup
My robot is oscillating before stopping if an obstacle is found in the path. This is because, when the robot sees an obstacle, the planner still plan a path through the narrow gap around the obstacle ...
anadgopi1994
1
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1
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16
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ROS Tracked Robot Gazebo Simulation
Hello, I am quite new to ROS and currently making a track robot model for gazebo & rviz simulation.
I have finished making the meshes of my robot with wheels and managed to make a basic URDF file.
...
FerdeLance
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1
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1
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Question about imu emplacement
hi ,
i have a sensor imu (razor_imu_9dof) and i'm using the ekf package to combine it with the odom data that coming from encoder , my question is where should i put the imu on the robot , i have a ...
kesuke
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1
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2
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Random poses for a robotic arm
Hi guys,
I need to finish a project for an internship but I am not really sure how to do it. Can you check it out?
Solution launched
User inputs number of poses to test
Poses are generated for ...
Hank470
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1
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3
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ROS Answers SE migration: range in rviz?
Hi everyone, I'm new to ROS and have a related question about it. how can I read the distance of an ultrasound sensor using rviz range? I don't know what to do. I have already registered the sensor. ...
jarain78
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1
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1
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pr2 cannot install pr2_robot
While debugging audio drivers on the pr2 robot the package pr2_robot was unintentionally uninstalled. I cannot seem to install ...
CodyLL
0
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1
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1
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3rd time getting stuck at "Building a ROS Package"
Before I get to this section if I do a:
echo $ROS_PACKAGE_PATH
i get two paths:
...
ju78iklo9
0
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1
answer
5
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Robot with raspberry pi and ROS
Hello everyone,
Sorry for the general question, but i did not know when to ask. I have been using ROS for a while now (SImulation), and i know how to use SLAM to build a map. So i decided to build a ...
Mohammedism
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1
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1
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Need Help to design an autonomous robot
I need to design an autonomous robot it will be a simple robot for indoor mapping and navigation, Please suggest:
which sensor to be used Lidar or kinect?
from where I can start? I don't understand ...
Hassam
0
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1
answer
5
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how to control scara robot yamaha with ros?
Hi all
I want to know I can control SCARA ROBOT(YAMAHA YK350XC controller RCX 142) with ROS ?
I need to use it in my thesis use robot with f/t sensor for exercise arm for rehabilitation .
It is ...
piyapat
0
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1
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2
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Retrieve robot name
Is there a way to retrieve robot name from the urdf in c++?
Or any other way to get it?
Thanks
Originally posted by muttidrhummer on ROS Answers with karma: 71 on 2017-10-03
Post score: 0
Original ...
muttidrhummer
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1
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1
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Second Rviz instance doesn't show robot model from ROS master
Dear all,
I am running a ROS master on a first PC with a Universal Robot in it. In a second PC I'd just like to see the visualization with Rviz. After exporting the IP address of the master using
<...
matl
0
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1
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3
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move_group with 2DOF workpiece positioner and 6DOF robot
Hello all,
I am programming cell with 2DOF workpiece positioner and 6DOF robot in MoveIt! How many move_groups is better to do for synchro motions? One general move_group with 8 joints? Or may be two ...
Vlad222
0
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1
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2
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Moveing a Robot
Hello,
How to move a Robot(In my case its Pioneer lx) from its source to goal position using moveit in ROS Kinetic.
Originally posted by Gaurav on ROS Answers with karma: 1 on 2017-05-01
Post score: ...
Gaurav
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1
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6
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How to drive robot in opposite direction
Hi all,
I have a robotic research platform with caster wheels on the front and drive wheels at the back. At the moment it's driving with caster wheels at the front but I feel the dynamics could be ...
mcarr
0
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1
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2
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How to remove or respawn robots during the simulation?
Hi everyone
I am a new ros user. Currently, I am implementing an algorithm by using Ros platform with Gazebo simulator. I will use a group of robot (at least 10 hector quadrotors) for the simulations. ...
0
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1
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2
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how publish pose topic for RRRBOT?
how publish pose topic for rrrbot ?
i cant undrstand this page turtle1
Originally posted by zakizadeh on ROS Answers with karma: 217 on 2017-04-13
Post score: -2
zakizadeh
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1
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1
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What hardware would be good to invest in for a hobbyist?
Hello everyone.
I have been getting a little into ros now and would like to try and make a robot with some added hardware to it.
I have different things laying around, like arduino's, raspberry pi, ...
Dynamitetalks