Search found 1017 matches

by fferri
24 Feb 2020, 12:15
Forum: General questions
Topic: Normal force/torque on joint
Replies: 1
Views: 782

Re: Normal force/torque on joint

Maybe reading this https://www.coppeliarobotics.com/helpFi ... ations.htm can help, especially considerations 6, 7, and 8
by fferri
24 Feb 2020, 10:07
Forum: General questions
Topic: Adding force-torque sensor below robot base
Replies: 2
Views: 1124

Re: Adding force-torque sensor below robot base

Are you sure the kinematic chain is dynamically enabled?

The base of the robot is static. I'm pretty sure you have to change something there...
by fferri
24 Feb 2020, 09:56
Forum: General questions
Topic: Remote api control python to Coppelia Sim 4.0.0
Replies: 2
Views: 1600

Re: Remote api control python to Coppelia Sim 4.0.0

xuehonghu wrote: 21 Feb 2020, 23:41 my program can't be connected to coppelia sim...
Can you explain that? Do you get some error message or similar? Please post the relevant information.
by fferri
24 Feb 2020, 09:44
Forum: General questions
Topic: Reading joint angles using Ros
Replies: 2
Views: 1143

Re: Reading joint angles using Ros

Hello i was trying to read joint angles using ros First i created a topic in syscall init in a non-threaded child script after playing a bit with controlled with ros scene example if simROS then print("<font color='#0F0'>ROS interface was found.</font>@html") ab1SensorTopicHandler=simROS....
by fferri
17 Feb 2020, 18:16
Forum: General questions
Topic: connection
Replies: 3
Views: 727

Re: connection

MATLAB it is officially supported via the CoppeliaSim Remote API (either B0-based, or legacy)

For the B0-based remote API (recommended), have a look at:
by fferri
17 Feb 2020, 16:11
Forum: General questions
Topic: connection
Replies: 3
Views: 727

Re: connection

It is not clear what communication protocols are supported by this CX-Programmer tool. CoppeliaSim has a lot of ways to connect with the outside: https://www.coppeliarobotics.com/helpFiles/en/meansOfCommunication.htm Try to see if there is some method of commucation available in both software suites...
by fferri
12 Feb 2020, 20:50
Forum: General questions
Topic: robot height
Replies: 2
Views: 597

Re: robot height

Perhaps your arm has reached a singularity (e.g. when fully extended).

Try using an inverse kinematics which does not suffer of such problems, e.g. damped least squares (DLS).

Suggested reading: Inverse kinematics tutorial.
by fferri
11 Feb 2020, 21:04
Forum: General questions
Topic: ROS Interface message type
Replies: 4
Views: 1442

Re: ROS Interface message type

That happens because the message you added depends on another message (actionlib_msgs/GoalID), which is not present in meta/messages.txt. Unfortunately the build system does not resolve those dependencies automatically: you have to list all the relevant messages.
by fferri
11 Feb 2020, 20:31
Forum: General questions
Topic: ROS Interface message type
Replies: 4
Views: 1442

Re: ROS Interface message type

if you are trying to do:

Code: Select all

pub = simROS.advertise('/my_topic/follow_joint_trajectory/goal', 'control_msgs/FollowJointTrajectoryActionGoal')
then the message you need to add in meta/messages.txt is:

Code: Select all

control_msgs/FollowJointTrajectoryActionGoal
by fferri
11 Feb 2020, 18:28
Forum: Bug reports
Topic: Building plugin fails in rev 4
Replies: 3
Views: 2948

Re: Building plugin fails in rev 4

This error is caused by using an obsolete version of Python. A fix for Python 2 has been pushed recently to libPlugin , however since Python 2.x has already reached end of life as beginning of year 2020, other packages will also stop supporting this obsolete version of Python, and you are likely to ...