Asked — Edited

Inverse Kinematic

This is a 2 part question on Revolution Six.

  1. Has anyone added servos to Six to give it 18 dof?
  2. Has anyone added code for inverse kinematics to improve the gait?


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#1  

I don't think anyone's posted any project with more servos on six. I would imagine it would make it a high centre of gravity.

PRO
Synthiam
#2  

This is what you want: https://synthiam.com/Tutorials/Help.aspx?id=180

This question doesn't apply to C++, even though it appears to be tagged for that.

#3  

Thanks for the link. The question was tagged as c++ because I thought I might need to write some code. I'm still thinking arduino where I supplied the x y z coordinates and calculated the servo angle. It looks like ARC is much easier if I can get my brain around it and transition from arduino.

PRO
Synthiam
#4  

Oh! I fully understand. Fully!

ARC is a whole new way of thinking for those who come from the Arduino world. ARC provides controls, and each control is a behavior, similar to how the ROS (Robot Operating System) works, but with pretty graphics instead of complicated programming, compilers, cryptic errors and linux shiver. If you WANT to program c++ or C#, you can make your own controls in ARC, which are called plugins. And you can also write EZ-Script or Blockly to build off the extensibility of the ARC controls.

Find more information in the activities guide, which introduces ARC, controls, scripting, movement panel, and of course ControlCommand.

#5  

Since I had 12 servos with SIX I decided to try a quad with 12DOF, 3 on each leg. I put together the gait with ARC and it all worked will. The 3 servos on the leg seem to have too mucxh preasure as they were humming. So I will go back to the original SIX configuration.

If anyone wants to experiment I uploaded it to EZ-Cloud as Quadruped 12DOF. I've only had Six for 2 weeks and this was my first attempt at building with the Auto Position control so don't judge. :)

It was a great learning experience.

PRO
Synthiam
#6  

This upcoming week ez-robot is offering a limited time upgrade to the latest HDD servos for existing revolution robot owners. If you want to run additional servos, i would highly recommend upgrading to the HDD, as they don't make any noise (no humming) and can't burn out due to internal protection circuits.

#7  

These new servos will be awesome... I am planning on buying a couple of developer's kits and some extra servos with my next ez robot order.... :)

#8  

DJ, is there a link to that upgrade offer? I don't see it in the store, and if you posted in the forum already, I missed it (or is this something upcoming that isn't posted yet?)

Alan

#9  

When will the robots ship with the new servos, specifically JD?

PRO
Synthiam
#10  

@jmp all robots ship with HDD's for the last 2 weeks. All servos (not micros) are HDD. EZ-Robot will no longer ship HD servos. EZ-Robot only ships HDD servos.

You can look at any product to read the specifications of HDD servos.

@techguru it is not "This upcoming week" yet:) I'll post a thread

#11  

Would that Upgrade offer apply even if I bought my Revolution Six through Brookstone?

#12  

Quote:

@techguru it is not "This upcoming week" yet Smile I'll post a thread

Thanks, wasn't sure if I missed something or was just mis-reading.

Alan

PRO
USA
#13  

Yeah I'm a bit confused. Am I to understand the revolution robots and the development kids contain the Hdd servos right now, and the single servos will be available soon?

#14  

@Will The HDD servos are also available now in the store... All kits contain them as well...

PRO
USA
#15  

Huh...I would have thought more fan fair on its release. Oh well, time for some more development kits!

PRO
Synthiam
#16  

@fxrtst, patience :)

PRO
USA
#17  

Ok now I am confused... lol what happened.... with gotta stop working 100 hrs a week on these films..whose on first ?!?

PRO
Synthiam
#18  

Robots are first :)

I ment patience regarding the promo on the servos. Robot Program video coming soon

PRO
USA
#19  

Got it! And you are right robots first!

#21  

I just couldn't wait and bought HDD servos for my JD and just have to say the results were fantastic! No more buzzing or humming Jd burnt our protection is a great feature.

@DJ... Excellent work

Frank

PRO
USA
#22  

Just bought 3 hdd servos for one of my Alan's will test this weekend.