Does nova work well on carpet?

Hitec robotics including ROBONOVA humanoid, HSR-8498HB servos, MR C-3024 Controllers and RoboBasic
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Does nova work well on carpet?

Post by Chemical » Sat Mar 18, 2006 3:22 am

Post by Chemical
Sat Mar 18, 2006 3:22 am

Hey


I've never seen this mentioned, and all video's are on smooth surfaces, so i wanted to know how is the little guy on carpet?


Thanks
Hey


I've never seen this mentioned, and all video's are on smooth surfaces, so i wanted to know how is the little guy on carpet?


Thanks
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Post by bauermech » Sat Mar 18, 2006 4:38 am

Post by bauermech
Sat Mar 18, 2006 4:38 am

Yeah, he CAN operate on carpet... sort of. walking and cartwheels are about it for the overall template program. Other than that, the carpet just produces too much friction between the sole and floor. ...not so good for the servos.
Yeah, he CAN operate on carpet... sort of. walking and cartwheels are about it for the overall template program. Other than that, the carpet just produces too much friction between the sole and floor. ...not so good for the servos.
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Post by Chemical » Wed Mar 29, 2006 12:34 am

Post by Chemical
Wed Mar 29, 2006 12:34 am

bauermech wrote:Yeah, he CAN operate on carpet... sort of. walking and cartwheels are about it for the overall template program. Other than that, the carpet just produces too much friction between the sole and floor. ...not so good for the servos.



Hmmm, it really sucks that my floor is all carpet, do you think programming a "power walk" would ease any strain on the servos?, and with the gyro to be released soon, what do you think?, would it be ok on my all carpet house?


Im not extremely bothered about every movment being perfect, but i want it to be able to walk, kick, punch and a few fancy things, do you think the servo's would still last and perform on carpet?

Another thing i noticed was nova/khr use there hands to get up, this wouldnt a problem with khr as its hands have a sort of spade on the end which would dig into the carpet, but novas hands look as though they could slide across carpet.


If anyone could post a video of him walking, turning and doing a few things on carpet i would be VERY greatful


also i noticed KHR's bigfoot addon, do you think a mod like this (basically putting thin lightweight metal on its feet) would help?, it would be a challenge to re program some of the movements but if it would save stressed servo's then its worth it, maybe with a slight curved edge?
bauermech wrote:Yeah, he CAN operate on carpet... sort of. walking and cartwheels are about it for the overall template program. Other than that, the carpet just produces too much friction between the sole and floor. ...not so good for the servos.



Hmmm, it really sucks that my floor is all carpet, do you think programming a "power walk" would ease any strain on the servos?, and with the gyro to be released soon, what do you think?, would it be ok on my all carpet house?


Im not extremely bothered about every movment being perfect, but i want it to be able to walk, kick, punch and a few fancy things, do you think the servo's would still last and perform on carpet?

Another thing i noticed was nova/khr use there hands to get up, this wouldnt a problem with khr as its hands have a sort of spade on the end which would dig into the carpet, but novas hands look as though they could slide across carpet.


If anyone could post a video of him walking, turning and doing a few things on carpet i would be VERY greatful


also i noticed KHR's bigfoot addon, do you think a mod like this (basically putting thin lightweight metal on its feet) would help?, it would be a challenge to re program some of the movements but if it would save stressed servo's then its worth it, maybe with a slight curved edge?
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Post by bauermech » Wed Mar 29, 2006 8:15 am

Post by bauermech
Wed Mar 29, 2006 8:15 am

Here's a demo on carpet... (Note: the bateries were low... he can normally do a cartwheel w no problem on carpet, but standing up is another story). The carpet is a short thick weave and doesn't give much.
http://www.bauerindependents.com/Video/RoboCarpet.wmv
:wink:
Yes it's true you can program him to operate on carpet, but be mindful of the friction.
Here's a demo on carpet... (Note: the bateries were low... he can normally do a cartwheel w no problem on carpet, but standing up is another story). The carpet is a short thick weave and doesn't give much.
http://www.bauerindependents.com/Video/RoboCarpet.wmv
:wink:
Yes it's true you can program him to operate on carpet, but be mindful of the friction.
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Post by Chemical » Wed Mar 29, 2006 4:37 pm

Post by Chemical
Wed Mar 29, 2006 4:37 pm

bauermech wrote:Here's a demo on carpet... (Note: the bateries were low... he can normally do a cartwheel w no problem on carpet, but standing up is another story). The carpet is a short thick weave and doesn't give much.
http://www.bauerindependents.com/Video/RoboCarpet.wmv
:wink:
Yes it's true you can program him to operate on carpet, but be mindful of the friction.


Haha, thanks alot for the video man, i really do appreciate it, he seemed ok getting up after the forward roll so maybe programming him to get up by lifting off his back in a similar way would work?, I dont think that would be a major problem and if on a full charge that doesnt happen then thats ok.


Anyways thanks alot, im just glad he doesnt look like he's walking the tight rope on carpet, my carpet may be thicker or thinner then that, i cant tell but mines also fairly sturdy, its not a big fluffy one so i would think it should be ok, now i just need it to go on discount :twisted:
bauermech wrote:Here's a demo on carpet... (Note: the bateries were low... he can normally do a cartwheel w no problem on carpet, but standing up is another story). The carpet is a short thick weave and doesn't give much.
http://www.bauerindependents.com/Video/RoboCarpet.wmv
:wink:
Yes it's true you can program him to operate on carpet, but be mindful of the friction.


Haha, thanks alot for the video man, i really do appreciate it, he seemed ok getting up after the forward roll so maybe programming him to get up by lifting off his back in a similar way would work?, I dont think that would be a major problem and if on a full charge that doesnt happen then thats ok.


Anyways thanks alot, im just glad he doesnt look like he's walking the tight rope on carpet, my carpet may be thicker or thinner then that, i cant tell but mines also fairly sturdy, its not a big fluffy one so i would think it should be ok, now i just need it to go on discount :twisted:
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Post by Morbeious » Wed Mar 29, 2006 5:59 pm

Post by Morbeious
Wed Mar 29, 2006 5:59 pm

Just made this video of RN-1 on my living room floor, which has carpet. He's fully charged. He's worse on carpet than my RSV2, but I would agree with some modification of his programs he could succusefully walk without falling.. down..

http://robosavvy.com/Builders/Morbeious ... Carpet.3g2

PS.

The vido's are in a Quicktime format. If I get a change i will try to convert them to a windows media, if the quicktime becomes a issue.
Just made this video of RN-1 on my living room floor, which has carpet. He's fully charged. He's worse on carpet than my RSV2, but I would agree with some modification of his programs he could succusefully walk without falling.. down..

http://robosavvy.com/Builders/Morbeious ... Carpet.3g2

PS.

The vido's are in a Quicktime format. If I get a change i will try to convert them to a windows media, if the quicktime becomes a issue.
Last edited by Morbeious on Wed Mar 29, 2006 7:49 pm, edited 1 time in total.
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Post by Chemical » Wed Mar 29, 2006 7:32 pm

Post by Chemical
Wed Mar 29, 2006 7:32 pm

Morbeious wrote:Just made this video of RN-1 on my living room floor, which has carpet. He's fully charged. He's worse on carpet than my RSV2, but I would agree with some modification of his programs he could succusefully walk without falling.. down..

http://robosavvy.com/Builders/Morbeious/RN-1 On Carpet.3g2

PS.

The vido's are in a Quicktime format. If I get a change i will try to convert them to a windows media, if the quicktime becomes a issue.


:(..................
Morbeious wrote:Just made this video of RN-1 on my living room floor, which has carpet. He's fully charged. He's worse on carpet than my RSV2, but I would agree with some modification of his programs he could succusefully walk without falling.. down..

http://robosavvy.com/Builders/Morbeious/RN-1 On Carpet.3g2

PS.

The vido's are in a Quicktime format. If I get a change i will try to convert them to a windows media, if the quicktime becomes a issue.


:(..................
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Post by Morbeious » Wed Mar 29, 2006 7:50 pm

Post by Morbeious
Wed Mar 29, 2006 7:50 pm

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Post by subpilot » Wed Mar 29, 2006 8:24 pm

Post by subpilot
Wed Mar 29, 2006 8:24 pm

That's also what I see happen on padded carpet. Not so good.
That's also what I see happen on padded carpet. Not so good.
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Post by gsferrari » Wed Mar 29, 2006 8:43 pm

Post by gsferrari
Wed Mar 29, 2006 8:43 pm

This is where the ability to "rotate" the leg at the hip will come in handy. The Robotis bioloid has this capability. I am sure it is possible to mod the Robonova with that functionality by adding two servos (the board can support 8 more?).

Robonova will become slightly taller as a result and the existing maps can still be used as long as the new servos are brought into the initial state before activating the "action sequences".

Gait can also be enhanced by the addition of the two servos in the hip.

Parts:

2 x servo
2 x brackets
screws

There is no room in the torso so you need to extend the hip region of the torso to accomodate the servos. Shouldnt be too hard...
This is where the ability to "rotate" the leg at the hip will come in handy. The Robotis bioloid has this capability. I am sure it is possible to mod the Robonova with that functionality by adding two servos (the board can support 8 more?).

Robonova will become slightly taller as a result and the existing maps can still be used as long as the new servos are brought into the initial state before activating the "action sequences".

Gait can also be enhanced by the addition of the two servos in the hip.

Parts:

2 x servo
2 x brackets
screws

There is no room in the torso so you need to extend the hip region of the torso to accomodate the servos. Shouldnt be too hard...
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Post by bauermech » Wed Mar 29, 2006 8:44 pm

Post by bauermech
Wed Mar 29, 2006 8:44 pm

Yeah, that's another thing... My carpet is actually a dense rug. There's no padding underneith. Sorry, but unlike Chemical, who has nothing but carpet, I have nothing but hard floors :D ...and one rug.
Yeah, that's another thing... My carpet is actually a dense rug. There's no padding underneith. Sorry, but unlike Chemical, who has nothing but carpet, I have nothing but hard floors :D ...and one rug.
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Post by Chemical » Wed Mar 29, 2006 8:53 pm

Post by Chemical
Wed Mar 29, 2006 8:53 pm

bauermech wrote:Yeah, that's another thing... My carpet is actually a dense rug. There's no padding underneith. Sorry, but unlike Chemical, who has nothing but carpet, I have nothing but hard floors :D ...and one rug.


I envy your carpetless house :(, the problem seems that he digs his foot into the carpet then trips himself over, maybe if it was programmed to left its knee, then stretch out its leg and play it downward to the ground, instead of forward.


Not sure, but anyways thanks for the videos and replies everyone, i'll look at a possible edit but maybe by the time i can afford it (im thinking 2045) there will be a firm solution?, who knows.
bauermech wrote:Yeah, that's another thing... My carpet is actually a dense rug. There's no padding underneith. Sorry, but unlike Chemical, who has nothing but carpet, I have nothing but hard floors :D ...and one rug.


I envy your carpetless house :(, the problem seems that he digs his foot into the carpet then trips himself over, maybe if it was programmed to left its knee, then stretch out its leg and play it downward to the ground, instead of forward.


Not sure, but anyways thanks for the videos and replies everyone, i'll look at a possible edit but maybe by the time i can afford it (im thinking 2045) there will be a firm solution?, who knows.
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RoboNova on Carpet

Post by dshinsel » Thu Mar 30, 2006 11:00 pm

Post by dshinsel
Thu Mar 30, 2006 11:00 pm

I tried an experiment. I added some rubber bumpers (1/4" high or so) to each of the 4 corners of each foot.

Adding the bumpers causes more force at each corner of the foot, and makes the footing more secure on carpet.

The good news: He walks much better on carpet!

The bad news: Tricks on hard floor do not work as well. Many of the tricks assume the ability for the foot to slide on the surface.

I think I will try again with some sort of slick bumpers or stand-offs. The key is to get more PSI on the edges of the foot pads.
I tried an experiment. I added some rubber bumpers (1/4" high or so) to each of the 4 corners of each foot.

Adding the bumpers causes more force at each corner of the foot, and makes the footing more secure on carpet.

The good news: He walks much better on carpet!

The bad news: Tricks on hard floor do not work as well. Many of the tricks assume the ability for the foot to slide on the surface.

I think I will try again with some sort of slick bumpers or stand-offs. The key is to get more PSI on the edges of the foot pads.
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Re: RoboNova on Carpet

Post by Chemical » Fri Mar 31, 2006 12:58 am

Post by Chemical
Fri Mar 31, 2006 12:58 am

dshinsel wrote:I tried an experiment. I added some rubber bumpers (1/4" high or so) to each of the 4 corners of each foot.

Adding the bumpers causes more force at each corner of the foot, and makes the footing more secure on carpet.

The good news: He walks much better on carpet!

The bad news: Tricks on hard floor do not work as well. Many of the tricks assume the ability for the foot to slide on the surface.

I think I will try again with some sort of slick bumpers or stand-offs. The key is to get more PSI on the edges of the foot pads.


Yes I think it will be hard to find a medium, as a pro for one thing is a con for another, thanks for the info i'll give that try when i have one, i also thought of giving it "elf shoes", meaning adding length to the front of the foot that maybe flicks up, i think he would walk better, but some tricks wouldnt work =-/


I saw a video the yesterday, I cant recall where but someone here probably seen it, testing robonova with gyro and accelometer sensors (something along those lines) one just didnt work but the other, they lent it back and it still balanced, seem side ways and everything, if these are released this could really help!
dshinsel wrote:I tried an experiment. I added some rubber bumpers (1/4" high or so) to each of the 4 corners of each foot.

Adding the bumpers causes more force at each corner of the foot, and makes the footing more secure on carpet.

The good news: He walks much better on carpet!

The bad news: Tricks on hard floor do not work as well. Many of the tricks assume the ability for the foot to slide on the surface.

I think I will try again with some sort of slick bumpers or stand-offs. The key is to get more PSI on the edges of the foot pads.


Yes I think it will be hard to find a medium, as a pro for one thing is a con for another, thanks for the info i'll give that try when i have one, i also thought of giving it "elf shoes", meaning adding length to the front of the foot that maybe flicks up, i think he would walk better, but some tricks wouldnt work =-/


I saw a video the yesterday, I cant recall where but someone here probably seen it, testing robonova with gyro and accelometer sensors (something along those lines) one just didnt work but the other, they lent it back and it still balanced, seem side ways and everything, if these are released this could really help!
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Post by gsferrari » Fri Mar 31, 2006 1:49 am

Post by gsferrari
Fri Mar 31, 2006 1:49 am

Can someone try adding more weight to the feet to see if this helps?
Can someone try adding more weight to the feet to see if this helps?
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