matrhint's profile - activity

I have added a mimic element with a few small modifications to the URDF to get the arm to move as I think you want it to

I have been working on a robot, and have got it to move in gazebo. Unfortunately, the robot does not go straight when given the command:

rostopic pub /cmd_vel geometry_msgs/Twist "linear: x: 1.0 y: 0.0 z: 0.0 angular: x: 0.0 y: 0.0 z: 0.0"

it makes the robot move forward in a wabble or teetering way that seems like one wheel is moving at a time.

The files are located here: https://github.com/matrhint/src

A video is posted here with just joints being shown: https://youtu.be/Z8d7ynoP_RQ

A video is posted here with joints, collisions, and contacts being shown: https://youtu.be/Ye9SlvWYKrw

It appears that there may be some Issues with the wheels being off center of the joint (one higher on one side and one lower on the other), thus leading to the one stopping while the other is free to turn. I am uncertain on how to make this perfectly center. I believe this is my issue but I think I might have to resize the wheel, re-measure it, or just change the xacro file to have a more precise radius for the joint (I may have rounded it too much-- and shouldn't have rounded at all).

Thanks in advance for any help.

Update 6/29/17: I found that the wheels were (slightly) oval in shape an not perfect circle. I remade the wheels and still have the same symptom. I have also tried to change the location of the wheel joints.

@ufr3c_tjc: It worked! Thanks

Thanks a lot for responding! I will give that a try and let you know what happens soon.

I am out of idea to try on this issue

Robot wabbles in gazebo I have been working on a robot, and have got it to move in gazebo. Unfortunately, the robot does

Robot wabbles in gazebo I have been working on a robot, and have got it to move in gazebo. Unfortunately, the robot does

Robot wabbles in gazebo I have been working on a robot, and have got it to move in gazebo. Unfortunately, the robot does

Robot wabbles in gazebo I have been working on a robot, and have got it to move in gazebo. Unfortunately, the robot does

Robot wabbles in gazebo I have been working on a robot, and have got it to move in gazebo. Unfortunately, the robot does

Robot wabbles in gazebo I have been working on a robot, and have got it to move in gazebo. Unfortunately, the robot does

killall gzserver fixed the issues. I now have casters in Gazebo!

Yes every time. I will open a new question for that issue. Thank you so much for all of your help.

I tried catkin_make clean and still no casters. I get red writing when gazebo is launched that says gazebo-2 process has

I tried catkin_make clean and still no casters. I get red writing when gazebo is launched that says gazebo-2 process has

I updated it on the github. Thanks again.

You are my hero, but it didn't work. I copied the <inertial> information from the left_wheel and placed it after t

You are my hero.

Any ideas why the front casters aren't showing up in gazebo?

I am trying to work with Gazebo using xacro files. It seems that it works with Rviz, but there is no model in Gazebo. Please take a look at the files here: https://github.com/matrhint/model-pro... I am running Kinetic. I am using roslaunch lawnmow_description lawnmow_rviz.launch and roslaunch lawnmow_gazebo lawnmow_world.launch to test it out.

Thank you for any assistance.

Edit: I was changing the wrong file. Your suggestion was correct. Thank you for your fast response and clear answer!

Thank you for your fast response! That is exactly what I want. I tried: <mesh scale="0.01 0.01 0.01" filename="packag

Why is Gazebo not loading a model? I am trying to work with Gazebo using xacro files. It seems that it works with Rviz,