What the heck are these?

Discussions regarding building a walking robot at home. Most of the robots participating at Robo-One competitions are custom fabricated.
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29 postsPage 2 of 21, 2

Post by Joe » Fri Sep 29, 2006 2:20 pm

Post by Joe
Fri Sep 29, 2006 2:20 pm

Thanks for the information; it's both informative and inspiring.

On Usenet I suggested you occasionally add a profile of a particular bot to robots dreams. I still think that's a great idea, but another one just occurred to me: you could write these up, with good photos and diagrams, and easily make a 4-page article for Servo or Robot on each one. That pays something like $400, so it might be worth your time to even go to these guys and do a quick interview, and ask for a screen shot of their CAD plans or whatever.

One of those magazines recently had such an article on Rook's Pawn, but I suspect that since most of the other editors/writers are here in the U.S., they're not going to be able to do the same for Japanese bots. You're uniquely positioned to do that. (Just get somebody to look over your copy and make sure you're using "it's" and "its" correctly. :))

Cheers,
— Joe
Thanks for the information; it's both informative and inspiring.

On Usenet I suggested you occasionally add a profile of a particular bot to robots dreams. I still think that's a great idea, but another one just occurred to me: you could write these up, with good photos and diagrams, and easily make a 4-page article for Servo or Robot on each one. That pays something like $400, so it might be worth your time to even go to these guys and do a quick interview, and ask for a screen shot of their CAD plans or whatever.

One of those magazines recently had such an article on Rook's Pawn, but I suspect that since most of the other editors/writers are here in the U.S., they're not going to be able to do the same for Japanese bots. You're uniquely positioned to do that. (Just get somebody to look over your copy and make sure you're using "it's" and "its" correctly. :))

Cheers,
— Joe
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Post by tempusmaster » Fri Sep 29, 2006 2:26 pm

Post by tempusmaster
Fri Sep 29, 2006 2:26 pm

MYKL wrote:These are great photos of Omnizero. Does anyone know what servo-motors are used in those boxes?


I haven't been able to confirm the exact data on the current design, but he has been using the JR DSR8801 servos (Torque: 28.5kg-cm, Speed: 0.14s/60 degrees) in the past.
MYKL wrote:These are great photos of Omnizero. Does anyone know what servo-motors are used in those boxes?


I haven't been able to confirm the exact data on the current design, but he has been using the JR DSR8801 servos (Torque: 28.5kg-cm, Speed: 0.14s/60 degrees) in the past.
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Post by tempusmaster » Fri Sep 29, 2006 2:47 pm

Post by tempusmaster
Fri Sep 29, 2006 2:47 pm

Joe wrote:Thanks for the information; it's both informative and inspiring.

Thanks. You're very welcome. It's my pleasure.
One of those magazines recently had such an article on Rook's Pawn,

That would be the excellent article that Matt wrote for ROBOT Magazine. I'm very glad that they didn't crop the photo any tighter or you wouldn't be able to see the logo on the knees. :D
but I suspect that since most of the other editors/writers are here in the U.S., they're not going to be able to do the same for Japanese bots. You're uniquely positioned to do that.

Something like this MANOI AT01 article? The extended version article runs 5 full pages and is scheduled for the next issue.
Joe wrote:Thanks for the information; it's both informative and inspiring.

Thanks. You're very welcome. It's my pleasure.
One of those magazines recently had such an article on Rook's Pawn,

That would be the excellent article that Matt wrote for ROBOT Magazine. I'm very glad that they didn't crop the photo any tighter or you wouldn't be able to see the logo on the knees. :D
but I suspect that since most of the other editors/writers are here in the U.S., they're not going to be able to do the same for Japanese bots. You're uniquely positioned to do that.

Something like this MANOI AT01 article? The extended version article runs 5 full pages and is scheduled for the next issue.
Latest robot news, information, reviews, hacks, photos, and videos - with special on-site coverage from Japan
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Post by MYKL » Fri Sep 29, 2006 4:12 pm

Post by MYKL
Fri Sep 29, 2006 4:12 pm

tempusmaster wrote:I haven't been able to confirm the exact data on the current design, but he has been using the JR DSR8801 servos (Torque: 28.5kg-cm, Speed: 0.14s/60 degrees) in the past.


*Deep Bow*

Thank you sir...

He must use a LiPo Batt and carbon fiber to keep Omnizero so light. That seems to be his only weakness in the wrestling matches...

^_^
tempusmaster wrote:I haven't been able to confirm the exact data on the current design, but he has been using the JR DSR8801 servos (Torque: 28.5kg-cm, Speed: 0.14s/60 degrees) in the past.


*Deep Bow*

Thank you sir...

He must use a LiPo Batt and carbon fiber to keep Omnizero so light. That seems to be his only weakness in the wrestling matches...

^_^
"Somnium est ubi nos ipsi primas agimus partes"
"There is a dream we are part of."
http://robosavvy.com/forum/viewtopic.php?p=13396#13396
http://robosavvy.com/forum/viewtopic.php?p=14047#14047
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Post by Joe » Fri Sep 29, 2006 6:03 pm

Post by Joe
Fri Sep 29, 2006 6:03 pm

tempusmaster wrote:Something like this MANOI AT01 article? The extended version article runs 5 full pages and is scheduled for the next issue.

Yeah — though personally, I'm more interested in home-built robots than commercial ones. I generally assume that commercial robots use all sorts of fancy tooling & special parts that I won't be able to get, and that home-built robots are more likely to use parts and techniques I could conceivable use as well.

Best,
- Joe
tempusmaster wrote:Something like this MANOI AT01 article? The extended version article runs 5 full pages and is scheduled for the next issue.

Yeah — though personally, I'm more interested in home-built robots than commercial ones. I generally assume that commercial robots use all sorts of fancy tooling & special parts that I won't be able to get, and that home-built robots are more likely to use parts and techniques I could conceivable use as well.

Best,
- Joe
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Post by bauermech » Fri Sep 29, 2006 9:19 pm

Post by bauermech
Fri Sep 29, 2006 9:19 pm

He must use a LiPo Batt and carbon fiber to keep Omnizero so light. That seems to be his only weakness in the wrestling matches...


I think he's using Ni-MH's in his chest. It threw me off to see him up close. OmniZero was much larger than I expected.

I'm more interested in home-built robots than commercial ones.


I am too, but a kit is a good way to get you started with a microcontroller and a pile of servos. I've found it's usually cheaper to by a kit than all the important parts seperately. The rest is just extra, but I can eventially find a use for it.

I cannot resist... the MANOI AT01 will probably be the next bot I buy. I'm so jelous you already get to "play" w/ one Lem :D
He must use a LiPo Batt and carbon fiber to keep Omnizero so light. That seems to be his only weakness in the wrestling matches...


I think he's using Ni-MH's in his chest. It threw me off to see him up close. OmniZero was much larger than I expected.

I'm more interested in home-built robots than commercial ones.


I am too, but a kit is a good way to get you started with a microcontroller and a pile of servos. I've found it's usually cheaper to by a kit than all the important parts seperately. The rest is just extra, but I can eventially find a use for it.

I cannot resist... the MANOI AT01 will probably be the next bot I buy. I'm so jelous you already get to "play" w/ one Lem :D
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Post by tempusmaster » Sat Sep 30, 2006 4:16 pm

Post by tempusmaster
Sat Sep 30, 2006 4:16 pm

bauermech wrote:
He must use a LiPo Batt and carbon fiber to keep Omnizero so light. That seems to be his only weakness in the wrestling matches...


I think he's using Ni-MH's in his chest. It threw me off to see him up close. OmniZero was much larger than I expected.

I'm more interested in home-built robots than commercial ones.


I am too, but a kit is a good way to get you started with a microcontroller and a pile of servos. I've found it's usually cheaper to by a kit than all the important parts seperately. The rest is just extra, but I can eventially find a use for it.

I cannot resist... the MANOI AT01 will probably be the next bot I buy. I'm so jelous you already get to "play" w/ one Lem :D


8)

Of course, it wasn't all just play. :lol:

The next steps?

    Figure out how to cut, trim, and paint all the body shells

    Buy gyros (currently sold out until mid-October)

    Create motions for Robo-Fight 4 (mid-November)

    Work on sprinting for the Kyosho Humanoid Cup (December)

    Add additional DOF - especially grippers... (know anyone that might be able to advise...? 8O
bauermech wrote:
He must use a LiPo Batt and carbon fiber to keep Omnizero so light. That seems to be his only weakness in the wrestling matches...


I think he's using Ni-MH's in his chest. It threw me off to see him up close. OmniZero was much larger than I expected.

I'm more interested in home-built robots than commercial ones.


I am too, but a kit is a good way to get you started with a microcontroller and a pile of servos. I've found it's usually cheaper to by a kit than all the important parts seperately. The rest is just extra, but I can eventially find a use for it.

I cannot resist... the MANOI AT01 will probably be the next bot I buy. I'm so jelous you already get to "play" w/ one Lem :D


8)

Of course, it wasn't all just play. :lol:

The next steps?

    Figure out how to cut, trim, and paint all the body shells

    Buy gyros (currently sold out until mid-October)

    Create motions for Robo-Fight 4 (mid-November)

    Work on sprinting for the Kyosho Humanoid Cup (December)

    Add additional DOF - especially grippers... (know anyone that might be able to advise...? 8O
Latest robot news, information, reviews, hacks, photos, and videos - with special on-site coverage from Japan
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Post by bauermech » Sat Sep 30, 2006 5:15 pm

Post by bauermech
Sat Sep 30, 2006 5:15 pm

Add additional DOF - especially grippers... (know anyone that might be able to advise...?

:D I still "owe" you a pair. I have a KRS-4024 servo to model from. Whould that be the best servo to use in your opinion?
Add additional DOF - especially grippers... (know anyone that might be able to advise...?

:D I still "owe" you a pair. I have a KRS-4024 servo to model from. Whould that be the best servo to use in your opinion?
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Post by tempusmaster » Sat Sep 30, 2006 11:39 pm

Post by tempusmaster
Sat Sep 30, 2006 11:39 pm

bauermech wrote:
Add additional DOF - especially grippers... (know anyone that might be able to advise...?

:D I still "owe" you a pair. I have a KRS-4024 servo to model from. Whould that be the best servo to use in your opinion?

If you're thinking about scaling up the grippers to sell for use with the MANOI AT01, then the 4024 is an excellent choice since the other 4xxx servos have the same dimensions. If some one needs more gripper torque then they can get all the way to 40 kg-cm (ouch - they don't call me "Fingerless" for nothing) without any mods.

Another factor to consider is that the 4xxx servos have connectors instead of being hard wired. You can replace a servo without having to worry about all the tangle and routing. It might allow you more freedom with design choices.
bauermech wrote:
Add additional DOF - especially grippers... (know anyone that might be able to advise...?

:D I still "owe" you a pair. I have a KRS-4024 servo to model from. Whould that be the best servo to use in your opinion?

If you're thinking about scaling up the grippers to sell for use with the MANOI AT01, then the 4024 is an excellent choice since the other 4xxx servos have the same dimensions. If some one needs more gripper torque then they can get all the way to 40 kg-cm (ouch - they don't call me "Fingerless" for nothing) without any mods.

Another factor to consider is that the 4xxx servos have connectors instead of being hard wired. You can replace a servo without having to worry about all the tangle and routing. It might allow you more freedom with design choices.
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Post by bauermech » Sun Oct 01, 2006 4:53 am

Post by bauermech
Sun Oct 01, 2006 4:53 am

If some one needs more gripper torque then they can get all the way to 40 kg-cm (ouch - they don't call me "Fingerless" for nothing) without any mods.


Yeah, those'd be more for a can-opener/crusher appendage. If Combots ever mixes with Robo-One.... that may be the route we'd want to take (that, or equipping beermat's saw-blade hands) :D

Another factor to consider is that the 4xxx servos have connectors instead of being hard wired. You can replace a servo without having to worry about all the tangle and routing. It might allow you more freedom with design choices.


Oh I know, I love these things.
They've thought of it all... like they build humanoids or something :wink:
If some one needs more gripper torque then they can get all the way to 40 kg-cm (ouch - they don't call me "Fingerless" for nothing) without any mods.


Yeah, those'd be more for a can-opener/crusher appendage. If Combots ever mixes with Robo-One.... that may be the route we'd want to take (that, or equipping beermat's saw-blade hands) :D

Another factor to consider is that the 4xxx servos have connectors instead of being hard wired. You can replace a servo without having to worry about all the tangle and routing. It might allow you more freedom with design choices.


Oh I know, I love these things.
They've thought of it all... like they build humanoids or something :wink:
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Post by bengomez » Tue Feb 03, 2009 8:22 am

Post by bengomez
Tue Feb 03, 2009 8:22 am

modeling a plastic is a good thing for a robot... some prototypes are greatly made from molded plastic.... some rapid industries are great for this..





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modeling a plastic is a good thing for a robot... some prototypes are greatly made from molded plastic.... some rapid industries are great for this..





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Post by dig » Tue Feb 03, 2009 4:37 pm

Post by dig
Tue Feb 03, 2009 4:37 pm

How to do the C bracket ?
How to do the C bracket ?
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A possible way to make servo enclosures at home?

Post by Mr Flibble » Fri Feb 06, 2009 12:41 pm

Post by Mr Flibble
Fri Feb 06, 2009 12:41 pm

Hi everyone (i've just joined, although I've been reading the forums with a lot of interest for some time :) ).

I have been looking at the impressive image provided by DerekZahn of an exploded view of some kind of servo enclosure. (here's the image link again) http://www.1mm.jp/m/robo20060710b.jpg

Although it looks a very complex design, it maybe possible to make it at home, as it does look like (when each side is laid flat), it could be mostly machined on a (home made?) CNC machine with a small cutting tool. Then the drill holes added after the CNC work, to finish off the design.

The thing that makes me think it could be done with CNC, is that every edge is vertical, when each side is laid flat.

I'm wondering if the finished metalwork also isn't exactly like this CAD drawing? ... as a CNC cutting tool wouldn't give V shape corners in the few places they are used in the drawing. (So they would end up U shaped, which would still work, I guess).

Anyway, thats just some thoughts on it. :)
Hi everyone (i've just joined, although I've been reading the forums with a lot of interest for some time :) ).

I have been looking at the impressive image provided by DerekZahn of an exploded view of some kind of servo enclosure. (here's the image link again) http://www.1mm.jp/m/robo20060710b.jpg

Although it looks a very complex design, it maybe possible to make it at home, as it does look like (when each side is laid flat), it could be mostly machined on a (home made?) CNC machine with a small cutting tool. Then the drill holes added after the CNC work, to finish off the design.

The thing that makes me think it could be done with CNC, is that every edge is vertical, when each side is laid flat.

I'm wondering if the finished metalwork also isn't exactly like this CAD drawing? ... as a CNC cutting tool wouldn't give V shape corners in the few places they are used in the drawing. (So they would end up U shaped, which would still work, I guess).

Anyway, thats just some thoughts on it. :)
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Post by janrozz » Wed Jul 15, 2009 10:45 pm

Post by janrozz
Wed Jul 15, 2009 10:45 pm

Joe wrote:
DerekZahn wrote:Here's an idea I was thinking of though: Suppose you use some sort of modeling clay or plastic or whatever. Then one could press the servos into it. Let it dry, then file/sand/mill the result so the dimensions are exactly as desired. Then use the result as a template for making a mold, then mold the final pieces out of plastic. With determination and a willingness to learn how to mold plastic I think it should be within the reach of a dedicated home builder, but it's certainly not easy!

That's probably the most practical approach. OmniZero has a lot of other plastic parts that are probably molded too — all those curved panels and so on. I've research home plastic molding a bit, and it's all doable, but as you say, not easy. There are some great instructional videos online at http://tapplastics.com.

Best,
— Joe


this is same plastic molding we did last to my prototype sneak robot



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Joe wrote:
DerekZahn wrote:Here's an idea I was thinking of though: Suppose you use some sort of modeling clay or plastic or whatever. Then one could press the servos into it. Let it dry, then file/sand/mill the result so the dimensions are exactly as desired. Then use the result as a template for making a mold, then mold the final pieces out of plastic. With determination and a willingness to learn how to mold plastic I think it should be within the reach of a dedicated home builder, but it's certainly not easy!

That's probably the most practical approach. OmniZero has a lot of other plastic parts that are probably molded too — all those curved panels and so on. I've research home plastic molding a bit, and it's all doable, but as you say, not easy. There are some great instructional videos online at http://tapplastics.com.

Best,
— Joe


this is same plastic molding we did last to my prototype sneak robot



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