2 more DOF on the hips AND stock moves?

[Octovir]

ok, so my RN-1 is on the operating table awaiting gears after a nasty fall prompting me to work on my digital RN..

It's not to spec and not extreme detail, but Looks About Right so far, plus ive also had some thoughts on adding that sought after extra rotation to the leg..

Here's one shot, more to come later:

[Gil]

I'm doing almost the same thing as you.

By my calculations extending the arms should allow it to continue using the original moves. I based my calculations on the proportions of the stock RN1 (idea came from DaVinci's Vitruvian Man drawing)

[limor]

Can you guys please post the 3D model.
It would be great to see the RN1 in 3D physics simulator like the one used for KHR-1 (to test out new gaits etc.)

[H3dude]

Nice work!!!! Please post the model file so we can play with it!!!

[Octovir]

Thanks Guys! Since you're all so eager to have the model, here its is.
Ive included the original setup for the legs as well as my idea for 2 more DOF.
It should look something like this:



.ma
.obj
.mtl
.3ds
.3dm
.wrl

I'll add the rest of the pieces(back plate, head) once i get them finished..
I'd also like to note that, the accuracy of these models is not the best
since I made them by "eyeballing" each part, but to play with and get an idea should be alright.
The .ma file has each moving piece parented to a bone, which still need
some oreintation and possibly skinning.

Edit: some of the files seem a little buggy.. working to fix..

[robodude666]

My lord! That is pretty detailed and close I would have to say. What program did you use to create them? My guess is either maya or 3ds since thats what everyone else uses.

[limor]

Hi Octovir,

thank you very much for posting the model!

I couldn't download the wrl file.
I usually use a public domain software called blender.org and it managed to import the 3ds file properly.
However i dont have Maya and couldnt find a converter for the .ma file with the bones or import it into blender. any chance you can export the rigged model to wrl or COLLADA or 3ds ?

[Ray]

Great !!

I hope there will be these product in the market !!

[Octovir]

alrighty, here are the models. I have yet to find a (free)way to export to 3ds directly from maya, to keep the skinning/rigging info. I was able to go directly to VRML2 and can veiw it using cortona, but am unsure how to manipulate the joints, or if they're even there! LOL

Still needing a little optimization, but i'll get this right eventually!


.wrl stock setup
.wrl with leg rotate

[hivemind]

I also made a 3D model and measured servo and brackets to ensure accuracy. I also have an altered robonova, so you may notice small differences here and there, but i probably meant for them to be there.

[tempusmaster]

I also made a 3D model and measured servo and brackets to ensure accuracy. I also have an altered robonova, so you may notice small differences here and there, but i probably meant for them to be there.

Matt's grippers look really cool,
though I wonder if they would
show off better if the moving
parts matched the 'gold' frame members.

[Octovir]

Nice! What program did you use to model that in? I want to go that
detailed but have hardly had time to finish the current project,
much less play with the real one.. have you actually made any of those modifications?

[hivemind]

I am waiting for parts to come in, but i have added the claws only so far. As soon as my accelerometer comes in I will be adding that, a couple gyros, bluetooth and then adjusting my legs.

As far as the model goes i just whipped that and the idea for the legs up in the last few hours because i had a wire problem on my robot and wanted to wait for the accelerometer to arrive to add my additions all at once.

I hope you like my model i will be adding rigging and therefore new poses soon. I'll probably also change his colour to slightly more orange tint as well as a few other minor details.

[Gil]

Like the black RN1 proved the robot is going to be unstable with that setup

[hivemind]

I took a look at the black RN-1 before developing my own legs and agreed that a setup like that would prove unstable. That is why i adjusted the servo positions and lowered my robot and made sure he still had the ability to squat in a low stance (like the stock RN-1). to show you what i mean i rendered my model standing as well so you can see that not only can my robot squat into low stance but he can also maintain a reasonable height and balance with my addition.



As you can see i am using the 'tilt' servo on a bracket connected directly to the upper part of the leg, unlike the black RN-1 which had the servo on a joint lower. This keeps my robot smaller and much more stable.