Designing the body for a Keepon

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Subject Author Date
Designing the body for a Keepon hewitt.rl 02-23-2009
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Posted by on February 23, 2009, 9:19 pm
(I've also posted this to the Seattle and RSSC lists, so my apologies
if you get it more than once!)

I'd like to try building a Keepon:
http://beatbots.org/research/




(In the last video, I presume it's teleoperated. I don't think it can
tell when it's being scolded or applauded. In any case, I'm only
planning to do as much as I have software for -- beat detection, face
detection, and tracking.)

I'm looking for ideas for the body design, esp. in terms of motion.

It looks like there are 4 motion primitives:
- vertical up and down
- pan
- tilt
- side-to-side rocking

Have I missed any?

My mechanical skills and equipment are limited (to say the least :) so
ideally, I'd like to use something like the Lynxmotion servo erector
set for this -- something I can essentially bolt together. Does anyone
have experience using these? Do you think that's a feasible approach
(precise enough, compact enough)?

Looking at their parts, I think I can see how everything except
bobbing up and down can be accomplished. I'm a little stumped on that
one! The two things that comes to mind are 1) a piston, cylinder,
crankshaft assembly, which seems way too elaborate, or 2) some sort of
cable and tube arrangement. But, I don't see parts for building a
cable-based mechanism in the erector set. Did I just miss that?

Thanks for any ideas or suggestions you might have on this!
Robin

Posted by on February 25, 2009, 11:35 am
Hey, in case anyone is thinking about this, just want to let you know
that Alan Marconett posted an idea on the SRS list that I plan to try
as my first attempt: marionette action in which strings pull on the
body from below. There's also a blurb in HackedGadgets confirming that
something like this is how the Keepon works. Once I get a start on
trying to build this, I'll post an update.

Cheers!
Robin

On Feb 23, 6:19 pm, hewitt...@gmail.com wrote:
> (I've also posted this to the Seattle and RSSC lists, so my apologies
> if you get it more than once!)
> I'd like to try building a
Keepon:http://beatbots.org/research/http://www.youtube.com/watch?v=CO3_CVwXCoshttp://www.youtube.com/watch?v=ewGk7aKjk7khttp://www.youtube.com/watch?v=lpUz1M0DHZU
> (In the last video, I presume it's teleoperated. I don't think it can
> tell when it's being scolded or applauded. In any case, I'm only
> planning to do as much as I have software for -- beat detection, face
> detection, and tracking.)
> I'm looking for ideas for the body design, esp. in terms of motion.
> It looks like there are 4 motion primitives:
> - vertical up and down
> - pan
> - tilt
> - side-to-side rocking
> Have I missed any?
> My mechanical skills and equipment are limited (to say the least :) so
> ideally, I'd like to use something like the Lynxmotion servo erector
> set for this -- something I can essentially bolt together. Does anyone
> have experience using these? Do you think that's a feasible approach
> (precise enough, compact enough)?
> Looking at their parts, I think I can see how everything except
> bobbing up and down can be accomplished. I'm a little stumped on that
> one! The two things that comes to mind are 1) a piston, cylinder,
> crankshaft assembly, which seems way too elaborate, or 2) some sort of
> cable and tube arrangement. But, I don't see parts for building a
> cable-based mechanism in the erector set. Did I just miss that?
> Thanks for any ideas or suggestions you might have on this!
> Robin


Posted by Roy on February 25, 2009, 7:31 pm
Have you seen this? It gives some details.

http://www.ri.cmu.edu/publication_view.html?pub_id=6266

- Roy

On Feb 25, 11:35 am, hewitt...@gmail.com wrote:
> Hey, in case anyone is thinking about this, just want to let you know
> that Alan Marconett posted an idea on the SRS list that I plan to try
> as my first attempt: marionette action in which strings pull on the
> body from below. There's also a blurb in HackedGadgets confirming that
> something like this is how the Keepon works. Once I get a start on
> trying to build this, I'll post an update.
> Cheers!
> Robin
> On Feb 23, 6:19 pm, hewitt...@gmail.com wrote:
> > (I've also posted this to the Seattle and RSSC lists, so my apologies
> > if you get it more than once!)
> > I'd like to try building a Keepon:http://beatbots.org/research/http://www.youtube.com/watch?v=CO3_CVwXC ...
> > (In the last video, I presume it's teleoperated. I don't think it can
> > tell when it's being scolded or applauded. In any case, I'm only
> > planning to do as much as I have software for -- beat detection, face
> > detection, and tracking.)
> > I'm looking for ideas for the body design, esp. in terms of motion.
> > It looks like there are 4 motion primitives:
> > - vertical up and down
> > - pan
> > - tilt
> > - side-to-side rocking
> > Have I missed any?
> > My mechanical skills and equipment are limited (to say the least :) so
> > ideally, I'd like to use something like the Lynxmotion servo erector
> > set for this -- something I can essentially bolt together. Does anyone
> > have experience using these? Do you think that's a feasible approach
> > (precise enough, compact enough)?
> > Looking at their parts, I think I can see how everything except
> > bobbing up and down can be accomplished. I'm a little stumped on that
> > one! The two things that comes to mind are 1) a piston, cylinder,
> > crankshaft assembly, which seems way too elaborate, or 2) some sort of
> > cable and tube arrangement. But, I don't see parts for building a
> > cable-based mechanism in the erector set. Did I just miss that?
> > Thanks for any ideas or suggestions you might have on this!
> > Robin


Posted by on February 25, 2009, 10:13 pm
Thanks, Roy!

I have it! I'm pretty sure I've been through all their publications.
The HackedGadgets photo and blurb went over the same ground, but had
more construction-oriented detail, which was why that one was
especially helpful!

Robin


> Have you seen this? It gives some details.
> http://www.ri.cmu.edu/publication_view.html?pub_idb66
> - Roy
> On Feb 25, 11:35 am, hewitt...@gmail.com wrote:
> > Hey, in case anyone is thinking about this, just want to let you know
> > that Alan Marconett posted an idea on the SRS list that I plan to try
> > as my first attempt: marionette action in which strings pull on the
> > body from below. There's also a blurb in HackedGadgets confirming that
> > something like this is how the Keepon works. Once I get a start on
> > trying to build this, I'll post an update.
> > Cheers!
> > Robin
> > On Feb 23, 6:19 pm, hewitt...@gmail.com wrote:
> > > (I've also posted this to the Seattle and RSSC lists, so my apologies
> > > if you get it more than once!)
> > > I'd like to try building a
Keepon:http://beatbots.org/research/http://www.youtube.com/watch?v=CO3_CVwXC ...
> > > (In the last video, I presume it's teleoperated. I don't think it can
> > > tell when it's being scolded or applauded. In any case, I'm only
> > > planning to do as much as I have software for -- beat detection, face
> > > detection, and tracking.)
> > > I'm looking for ideas for the body design, esp. in terms of motion.
> > > It looks like there are 4 motion primitives:
> > > - vertical up and down
> > > - pan
> > > - tilt
> > > - side-to-side rocking
> > > Have I missed any?
> > > My mechanical skills and equipment are limited (to say the least :) so
> > > ideally, I'd like to use something like the Lynxmotion servo erector
> > > set for this -- something I can essentially bolt together. Does anyone
> > > have experience using these? Do you think that's a feasible approach
> > > (precise enough, compact enough)?
> > > Looking at their parts, I think I can see how everything except
> > > bobbing up and down can be accomplished. I'm a little stumped on that
> > > one! The two things that comes to mind are 1) a piston, cylinder,
> > > crankshaft assembly, which seems way too elaborate, or 2) some sort of
> > > cable and tube arrangement. But, I don't see parts for building a
> > > cable-based mechanism in the erector set. Did I just miss that?
> > > Thanks for any ideas or suggestions you might have on this!
> > > Robin


Posted by dttworld@aol.com on February 25, 2009, 8:31 pm
On Feb 23, 9:19 pm, hewitt...@gmail.com wrote:
> (I've also posted this to the Seattle and RSSC lists, so my apologies
> if you get it more than once!)
> I'd like to try building a Keepon:http://beatbots.org/research/http://www.youtube.com/watch?v=CO3_CVwXCoshttp://www.youtube.com/watch?v=ewGk7aKj=
k7k
> (In the last video, I presume it's teleoperated. I don't think it can
> tell when it's being scolded or applauded. In any case, I'm only
> planning to do as much as I have software for -- beat detection, face
> detection, and tracking.)
> I'm looking for ideas for the body design, esp. in terms of motion.
> It looks like there are 4 motion primitives:
> - vertical up and down
> - pan
> - tilt
> - side-to-side rocking
> Have I missed any?
> My mechanical skills and equipment are limited (to say the least :) so
> ideally, I'd like to use something like the Lynxmotion servo erector
> set for this -- something I can essentially bolt together. Does anyone
> have experience using these? Do you think that's a feasible approach
> (precise enough, compact enough)?
> Looking at their parts, I think I can see how everything except
> bobbing up and down can be accomplished. I'm a little stumped on that
> one! The two things that comes to mind are 1) a piston, cylinder,
> crankshaft assembly, which seems way too elaborate, or 2) some sort of
> cable and tube arrangement. But, I don't see parts for building a
> cable-based mechanism in the erector set. Did I just miss that?
> Thanks for any ideas or suggestions you might have on this!
> Robin

The History Channel video (2nd one from top) has a clip explaining the
mechanics:
http://beatbots.org/category/videos/

Are you able to open source the software if there were an open source
hardware design?

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