Search found 1011 matches

by fferri
08 May 2020, 10:57
Forum: General questions
Topic: How can I speed-up the simulation of the Hokuyo in ROS
Replies: 5
Views: 2339

Re: How can I speed-up the simulation of the Hokuyo in ROS

Please post a screenshot of the "distorted" point cloud.

Are you sure the depth image is a rgb8 image?
I think it should be a 1 channel image.
by fferri
07 May 2020, 14:34
Forum: General questions
Topic: Pioneer P3dx Specifications
Replies: 1
Views: 2018

Re: Pioneer P3dx Specifications

Maybe you can find some information here.

However, if you are developing a kinematic model for the robot, odometry calibration will give you more reliable values.
by fferri
06 May 2020, 11:43
Forum: General questions
Topic: control the joints using quaternion or rotation matrix.
Replies: 1
Views: 1165

Re: control the joints using quaternion or rotation matrix.

A revolute joint has only one degree of freedom, so it doesn't make sense to set a quaternion or a rotation matrix.

Compute your angle using a more robust numerical method (atan2, vector-vector angle, or whatever) and set the joint angle)
by fferri
06 May 2020, 11:13
Forum: General questions
Topic: How can I speed-up the simulation of the Hokuyo in ROS
Replies: 5
Views: 2339

Re: How can I speed-up the simulation of the Hokuyo in ROS

Is perhaps Packet1 is blank enabled on the depth sensor? That might cause some issue.
by fferri
01 May 2020, 15:28
Forum: General questions
Topic: How can I speed-up the simulation of the Hokuyo in ROS
Replies: 5
Views: 2339

Re: How can I speed-up the simulation of the Hokuyo in ROS

Hi Mario, I don't believe you can use a vision sensor to simulate a LIDAR and output a LaserScan message without doing additional resampling. The reason is pretty simple: the LaserScan message assumes the angle increment is constant . This is a natural for a LIDAR which operates by spinning a mirror...
by fferri
30 Apr 2020, 17:29
Forum: General questions
Topic: Visual Servoing Coppelia SIm
Replies: 5
Views: 2102

Re: Visual Servoing Coppelia SIm

Sure, you can also work directly with joint velocities. In that case you don't need a target or the IK calculation module at all.
by fferri
30 Apr 2020, 09:17
Forum: General questions
Topic: Visual Servoing Coppelia SIm
Replies: 5
Views: 2102

Re: Visual Servoing Coppelia SIm

You probably need another target (which you will control in x,y,z position) that the robot will follow, after you have configured robot's IK functionality. See models/7 DoF manipulator or models/ABB IRB 140 or the Inverse kinematics tutorial . Top 2 results for visual servoing: https://en.wikipedia....
by fferri
27 Apr 2020, 08:19
Forum: General questions
Topic: Dropping items into scene; collisions
Replies: 2
Views: 761

Re: Dropping items into scene; collisions

How about using the Collision detection module?
by fferri
24 Apr 2020, 16:18
Forum: General questions
Topic: blueZero for python remote API
Replies: 5
Views: 1462

Re: blueZero for python remote API

Those should be .dll files in the same location as b0.dll
by fferri
24 Apr 2020, 15:09
Forum: General questions
Topic: blueZero for python remote API
Replies: 5
Views: 1462

Re: blueZero for python remote API

dlmed wrote: 24 Apr 2020, 13:59 What files do I need to copy to my working directory?
libzmq, boost_chrono, boost_system, boost_thread, etc...