Moveo D-H Parameters

[MarcoAntonini]

Moveo is awesome project! Thanks for sharing it! I finished assembly my Moveo, I would like to drive it with a direct and inverse kinematics. Someone has already calculated the d-h parameters (Denavit–Hartenberg) of this robot?

[MarcoAntonini]

Ok, calculated it . Added a joint-6 to expand sixth rotary dof.

Moveo D-H Parameters (5/6DOF)

#            L3
#   j2  *----------*   j3
#       |       L4 | 
#   L2  |          *   j4
#       |       L5 |
#   j1  *          *   j5
#       |       L6 |
#   L1  |          *   j6
#               L7 |
#                 | |  end effector

joint	Alpha	A	D
j1	0	0	L1
j2	90	0	0
j3	0	L2	0
j4	90	0	L3
j5	-90	0	0
j6	90	0	L4

Testing it with LinuxCNC Vismach simulator:

[kitusmark]

Wow @MarcoAntonini !

Awesome job. I would be very interested if you share how you control your Moveo. Is it ROS or something? That looks pretty neat

[MarcoAntonini]

Yes, LinuxCNC has realtime kernel ! Certainly I will share documentation as soon as possible I'm studying for stepper signals generation, for now just a simulation but very impressive :

https://www.youtube.com/watch?v=55SpbKL9n8U

[kitusmark]

That's really impressive. Didn't know about linuxCNC (used Mach3 instead). It seems like a very configurable software as you can render the full robot in 3D. Is there a way of generating the trajectories within the software? or any way of make the robot learn the movements? truly impressive

[MarcoAntonini]

LinuxCNC is similar to Mach3,It has a python scripting language to create your own robot/machine. It generate the trajectories in non-linear movements from XYZABC cartesian coordinates using direct kinematics. For current configuration (5 joint) only X-Y-Z-A-B are supported. Add sixth joint for C Axes.

This simulation using the A,B axis , rotate a effector around a fixed point : https://www.youtube.com/watch?v=SHPSGXtctZM ,seems to properly work :)

[pkmcnc]

@MarcoAntonini this is great! How did you make a visualisation?

[MarcoAntonini]

@pkmcnc , use the linuxcnc vismach http://linuxcnc.org/docs/html/gui/vismach.html

[abdelaziz94]

hello sir did you calculate the inverse kinematics of this robotic arm ? if you did it can you provide it to me please ?

[tsibos22]

Hallo everyone. Has anyone the inverse kinematics of moveo in excel? Thanks

[bmunkhtulga]

Any news on this one guys? I have found some inverse kinematic solutions on the Internet. Thought you guys might be interested. Here is link: http://www.chew-z.it/wiki/doku.php?id=moveo:moveo_kinematic

Thing is it is not in English.

[Mare-02]

This can help you: https://stackoverflow.com/questions/67159164/denavit-hartenberg-6dof-moveo-inverse-kinematic-robot-arm?noredirect=1#comment118726837_67159164