RoboSavvy Forum

Roller skating Robonova

2006-08-27T08:38:40+01:00

love the video
the poles remind me of grass skiing...
wonder how inline skates would go?
i figure with ankle movement it should turn?
anyways keep up the good work

fatman

Statistics: Posted by fatman — Sun Aug 27, 2006 8:38 am

Roller skating Robonova

2006-08-26T19:04:45+01:00

Aren't robots fun?!

Statistics: Posted by beermat — Sat Aug 26, 2006 7:04 pm

Roller skating Robonova

2006-08-26T11:02:18+01:00

great article about beermat's skating robot on Robots-Dreams

http://www.robots-dreams.com/2006/08/ro ... robot.html

Ski poles!!!

Statistics: Posted by limor — Sat Aug 26, 2006 11:02 am

Roller skating Robonova

2006-07-29T10:47:44+01:00

limor wrote:
how flex are the trucks? is RN1's weight enought to turn the axel?

The trucks are adjustable, so they could in theory be loosened to allow the robot to lean into a turn. However in reality it probably isn't going to happen.
The skateboard deck is not shaped for flat robot feet and stability becomes a bigger issue than it has to be.

It's probably not the best way to go but it was 7$ at wal-mart, so i bought it on impulse as it looked cool and is about the right size.

Statistics: Posted by Gman — Sat Jul 29, 2006 10:47 am

Roller skating Robonova

2006-07-29T07:51:26+01:00

loved the fly by on one leg...

just a thought ...i agree with tempusmaster...the idea that the wheels should be angled...but probably to a larger angle...maybe 30 degrees
and to propel forward use the stock side-step move...
each push will send him sideways but he will come back on the other foot so over distance its straightish? ?? ??maybe???

anyway nice video

Statistics: Posted by fatman — Sat Jul 29, 2006 7:51 am

Roller skating Robonova

2006-07-29T01:54:18+01:00

limor wrote:
This miniature robot skateboard is as unlikely to exist in mass production as a babel fish.

Well, limor, do you think you should let the manufacturer know this, and all the online retail stores attempting to sell this thing, even though its 'unlikely' to be in mass production?

Or: http://www.techdeck.com/products/handboard/proskater3.htm

So, given you linked the likelyhood of the two above, where can I buy a babel fish?

Statistics: Posted by beermat — Sat Jul 29, 2006 1:54 am

Roller skating Robonova

2006-07-28T11:38:10+01:00

Gman wrote:
I've been using a toy skateboard called a techdeck handboard. There are no bearings in the wheels but the trucks are working miniature skateboard trucks with bushings and everything.
http://robosavvy.com/Builders/Gman/Awes ... %20rip.JPG

This miniature robot skateboard is as unlikely to exist in mass production as a babel fish.
how flex are the trucks? is RN1's weight enought to turn the axel?

Statistics: Posted by limor — Fri Jul 28, 2006 11:38 am

Roller skating Robonova

2006-07-28T02:51:39+01:00

Gman - nice tipoff. I usually have a lot of sucess looking for stuff via Google, but I didn't see that. Might grab one or two, check it out, see if I can convert the wheels to skates, too.

Keep up the good work and post some progress on the skateboarding if you make any!

Statistics: Posted by beermat — Fri Jul 28, 2006 2:51 am

Roller skating Robonova

2006-07-28T01:31:34+01:00

beermat this is awesome. Thanks for the info on the mini-wheels!!!!!

I'm also attemtpting to make my robonova skateboard. I've been using a toy skateboard called a techdeck handboard. There are no bearings in
the wheels but the trucks are working miniature skateboard trucks with
bushings and everything.

http://robosavvy.com/Builders/Gman/Awes ... %20rip.JPG

the board is almost as tall as the robot, and accommidates his stance
nicely. Eventually i want to make a custom deck that is flat except for the nose and tail as the concave in this deck makes it hard for the
robot to balance.

pics of the skateboard...
http://robosavvy.com/Builders/Gman/techdeck%20top.JPG

http://robosavvy.com/Builders/Gman/tech ... bottom.JPG

I've been modifying 'simple dance move' a.k.a. body_move from the
template program to make the robot pop the front wheels off the ground.
Success has been limited but I have been spending more time taking
myself skateboarding rather than working on this project right now.

Gotta enjoy these Canadian summers because winter is just around the
corner it seems.

Statistics: Posted by Gman — Fri Jul 28, 2006 1:31 am

Roller skating Robonova

2006-07-26T04:45:54+01:00

bauermech wrote:
Although it is funny you should mention the additional DOF's... That's what I've been up to this last week. I'm making two sets of every bracket. One for my RN-1, and the other as a production sample (if the need ever arises).

Good to know you been working hard the past week rather than watching tv and sipping lemonade like I have been the past week (it was seltzer not lemonade, but close enough!).

And, beermat, very nice skate Smile I think it might be possible without modding the nova at all. However, it will be really hard. I think the skateboard will be a lot easier to do. Hard part about that will be to get him to balance on one leg bent down a bit and push off with the other leg. A gyro or accelerometer might help with that.

Statistics: Posted by robodude666 — Wed Jul 26, 2006 4:45 am

Roller skating Robonova

2006-07-26T02:03:46+01:00

I suspect that by pointing the skates about 5 to 10 degrees outward you might be able to get enough friction to push against. The timing would be tricky as well as keeping the robot balanced, but it wouldn't require major mods.

That's a very good point. Good lookin' out.

Statistics: Posted by bauermech — Wed Jul 26, 2006 2:03 am

Roller skating Robonova

2006-07-26T01:37:58+01:00

bauermech wrote:
:D Beautiful! Great work!

I've spent some time studying the Plen moves in slow-mo, and I'm getting some ideas, but the Plens extra DOF helps him somewhat.

The independent leg rotation is almost a must. By pivoting one leg, you can turn the wheels on that leg into a source of friction for forward propulsion. ...oops, sorry if I'm sounding like captain obvious here.

I'm really looking forward to seeing more though. Good luck in your pursuit!

Rotating the legs at the hips is a major mod - at least for some people but there's no rule that says the skates have to be exactly parallel to the feet.

I suspect that by pointing the skates about 5 to 10 degrees outward you might be able to get enough friction to push against. The timing would be tricky as well as keeping the robot balanced, but it wouldn't require major mods.

Statistics: Posted by tempusmaster — Wed Jul 26, 2006 1:37 am

Roller skating Robonova

2006-07-26T01:34:46+01:00

The skates are your wave. Who am I to ride it?

No, but really, great job on 'em. Although it is funny you should mention the additional DOF's... That's what I've been up to this last week. I'm making two sets of every bracket. One for my RN-1, and the other as a production sample (if the need ever arises). There are a few other people working on the independent leg rotation as well. This is really exciting... It'll be neat to see what different designs we've all come up with and how we've dealt with some of the more challenging aspects of their functionality.

If not me, I'm sure one of the other talented fabricators that visit this forum might have a bracket kit available soon.

Maybe we can trade a set of skates for a couple brackets or something here in the future.

Statistics: Posted by bauermech — Wed Jul 26, 2006 1:34 am

Roller skating Robonova

2006-07-26T00:54:30+01:00

limor - the wheels, bearing brackets and rails are here:

http://kornylak.com/wheels/mini-wheel.html

There is an 'Order Online' link to the left. Wheels are either 20c or 60c each. Bearing brackets (1 per wheel) are 15c each. The rail is $15.20 for a minimum of 10 feet.

I'm glad to see bauermech is reading and replied, although the answer I expected ('hey, I made some skates in gold coloured anodized aluminum, figured out the code (see bottom of post and cut and paste) and have kits available, including a body shell for 3 extra DOFs in the legs and waist, for just $10') didn't seem to materialize

Statistics: Posted by beermat — Wed Jul 26, 2006 12:54 am

Roller skating Robonova

2006-07-25T22:52:06+01:00

Beautiful! Great work!

I've spent some time studying the Plen moves in slow-mo, and I'm getting some ideas, but the Plens extra DOF helps him somewhat.

The independent leg rotation is almost a must. By pivoting one leg, you can turn the wheels on that leg into a source of friction for forward propulsion. ...oops, sorry if I'm sounding like captain obvious here.

I'm really looking forward to seeing more though. Good luck in your pursuit!

Statistics: Posted by bauermech — Tue Jul 25, 2006 10:52 pm