Can we develop a 6-R robot control system based on the LinuxCNC ?

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17 May 2021 10:18 #209206 by hitmanlinuxcnc
Can we develop a 6-R robot control system based on the LinuxCNC ?
And also I need a FlexPendant as ABB robot or KUKA robot etc.
How to implement the command (such as MOVL, MOVC.....) parsing?
Thank you

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17 May 2021 14:20 #209228 by Roiki
You can, just hire 10 developers for a year or two.

If you search the forum people have been working on it for quite some time. Industrial robots are just quite a bit more complex than cnc machines so it takes time.

If you're good with c++ or python, feel free to help out.
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17 May 2021 20:14 #209269 by aleksamc
Wow, it's your first topic, hitman, and you go so deep, in 6-axis robots.
It's really very hard to tell you, if you can develop such robot. I think you should know it better then somebody else on this forum;)
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17 May 2021 20:29 #209274 by newbynobi
Why, develop it?

Have you looked in the Sim configs? There are examples for Scara and also robots.
And grotius is doing a great job designing actual a modern GUI for ROS

Norbert
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18 May 2021 13:44 - 18 May 2021 13:45 #209350 by Roiki

Why, develop it?

Have you looked in the Sim configs? There are examples for Scara and also robots.
And grotius is doing a great job designing actual a modern GUI for ROS

Norbert


None of the configs properly work with 6 axis robot.

And grotius doesnt use ros. It's for linuxcnc and his own kinematics code.
Last edit: 18 May 2021 13:45 by Roiki.

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19 May 2021 07:35 #209455 by hitmanlinuxcnc
Actually, we have some 6-R controller source c++ code, but with lots of bugs.
Not developed by our team.
Painful to repair and improve it.

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19 May 2021 09:47 - 19 May 2021 09:48 #209473 by Aciera

It's for linuxcnc and his own kinematics code.


As far as I know, his application uses the KDL kinematics library. That is also used in ROS.
Last edit: 19 May 2021 09:48 by Aciera.

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23 May 2021 16:04 - 23 May 2021 18:13 #209917 by Grotius
Hi,

Yes kdl.

Actually, we have some 6-R controller source c++ code, but with lots of bugs.
Aii. This sounds painfull.

Not developed by our team.
Wich team is your team, from point off interest?

Painful to repair and improve it
Clean coding is a skill that takes time. I think the previous team manager failed.
But coding at this math level is not an easy task at all. Solving bug's can take more time then write code
parts from scratch again.

Can we develop a 6-R robot control system based on the LinuxCNC ?
There are some around already. A few year's ago a professor made a script about linuxcnc with robot controller, it's still on the net.
And there are some other examples.

If you have the math level to do the inverse interpolation yourself in c code, it's quite easy to implement it in hal.
The advantage of kdl is that you can build up a structure from joint's or whetever what. I see no direct limit's to kdl.
But kdl is in c++ and c++ is not realtime. So you need a workaround.

But it is possible.

How to implement the command (such as MOVL, MOVC.....) parsing?
Trough hal you can sent command's like that to whatever part of lcnc. But you have to code the movl, movc parser yourself in c++.
I think you can keep the existing syntax. And write a simple translator for it. This should not be the problem.
Last edit: 23 May 2021 18:13 by Grotius.
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30 May 2021 08:43 #210663 by hitmanlinuxcnc
Thank you so much! I really appreciate your answer

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09 Jun 2021 01:00 - 09 Jun 2021 02:01 #211575 by hitmanlinuxcnc
thank you
Last edit: 09 Jun 2021 02:01 by hitmanlinuxcnc.

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