Here is an update on the robot hand that I started a while ago...

I've changed the way the palm is modelled, and added some bits from my
electronics.inc

Having put the model inside a "real" scene (my shed, see web), the textures
have really improved, although they are still extremely basic
pigments-with-a-bit-of-reflection.

I've just noticed that a couple of the objects are floating a bit, and the
heel of the hand needs to come down, but anyway...

--

Mark Hanford
http://www.mrhanford.com/povray

Post a reply to this message

Attachments:
Download 'pbi 2002.02.12 v2.jpg' (76 KB)

Preview of image 'pbi 2002.02.12 v2.jpg'

Is that an opposable thumb I can see? What about length conservation on
your spline-wires, is that sorted? If you can adapt the string code at
http://www.esite-host.com/~rocketmg/ for use in animations, it might be
helpful (some of the cloth animators in p.b.a can probably help you with
this, since cloths are 2D analogues of strings...)
I look forward to your completed scene, hopefully with more robot
bits...

Mark Hanford wrote:
> 
> Here is an update on the robot hand that I started a while ago...
> 
> I've changed the way the palm is modelled, and added some bits from my
> electronics.inc
> 
> Having put the model inside a "real" scene (my shed, see web), the textures
> have really improved, although they are still extremely basic
> pigments-with-a-bit-of-reflection.
> 
> I've just noticed that a couple of the objects are floating a bit, and the
> heel of the hand needs to come down, but anyway...
> 
> --
> 
> Mark Hanford
> http://www.mrhanford.com/povray
> 
>  [Image]

-- 
signature{
  "Grey Knight" contact{ email "gre### [at] yahoocom" }
  site_of_week{ url "http://digilander.iol.it/jrgpov" }
}

Post a reply to this message

Thanks - It certainly is an opposable thumb, in fact all the fingers can be
wiggled around, you never know when you might need to greet a Vulcan...

Length conservation is still handled in a bodge-it'n'leg-it fashion, I'm
planning to just stretch the control points a bit depending on the angle of
the bend.  (At the moment, it does nothing, as you can see from the image -
no loops)

Do to my unlimited materials budget building this robot, I have used
state-of-the-art, next-generation, memoryform shape-changing liquid metal.
That's probably how it will stay until I get hold of some old-fashioned wire
to make the fingers go...

(btw, That link to rocketmg is stale...)

Mark Hanford
http://www.mrhanford.com/povray


"Grey Knight" <s16### [at] namtarqubacuk> wrote in message
news:3C690852.42A6F04B@namtar.qub.ac.uk...
> Is that an opposable thumb I can see? What about length conservation on
> your spline-wires, is that sorted? If you can adapt the string code at
> http://www.esite-host.com/~rocketmg/ for use in animations, it might be
> helpful (some of the cloth animators in p.b.a can probably help you with
> this, since cloths are 2D analogues of strings...)
> I look forward to your completed scene, hopefully with more robot
> bits...
>
> Mark Hanford wrote:
> >
> > Here is an update on the robot hand that I started a while ago...
> >
> > I've changed the way the palm is modelled, and added some bits from my
> > electronics.inc
> >
> > Having put the model inside a "real" scene (my shed, see web), the
textures
> > have really improved, although they are still extremely basic
> > pigments-with-a-bit-of-reflection.
> >
> > I've just noticed that a couple of the objects are floating a bit, and
the
> > heel of the hand needs to come down, but anyway...
> >
> > --
> >
> > Mark Hanford
> > http://www.mrhanford.com/povray
> >
> >  [Image]
>
> --
> signature{
>   "Grey Knight" contact{ email "gre### [at] yahoocom" }
>   site_of_week{ url "http://digilander.iol.it/jrgpov" }
> }

Post a reply to this message

Unfortunately I had a tighter budget and was forced to use rubber tubing
instead of liquid metal.  Your solution looks much neater and is less likely
to get snagged on passing objects.

I will see if the patron wants to spring for a retrofit.  How much does
state-of-the-art, next-generation, memoryform shape-changing liquid metal
cost?


"Mark Hanford" <ren### [at] blueyondercouk> wrote in message
news:3c690c7b$1@news.povray.org...
> Thanks - It certainly is an opposable thumb, in fact all the fingers can
be
> wiggled around, you never know when you might need to greet a Vulcan...
>
> Length conservation is still handled in a bodge-it'n'leg-it fashion, I'm
> planning to just stretch the control points a bit depending on the angle
of
> the bend.  (At the moment, it does nothing, as you can see from the
image -
> no loops)
>
> Do to my unlimited materials budget building this robot, I have used
> state-of-the-art, next-generation, memoryform shape-changing liquid metal.
> That's probably how it will stay until I get hold of some old-fashioned
wire
> to make the fingers go...
>
> (btw, That link to rocketmg is stale...)
>
> Mark Hanford
> http://www.mrhanford.com/povray
>
>
> "Grey Knight" <s16### [at] namtarqubacuk> wrote in message
> news:3C690852.42A6F04B@namtar.qub.ac.uk...
> > Is that an opposable thumb I can see? What about length conservation on
> > your spline-wires, is that sorted? If you can adapt the string code at
> > http://www.esite-host.com/~rocketmg/ for use in animations, it might be
> > helpful (some of the cloth animators in p.b.a can probably help you with
> > this, since cloths are 2D analogues of strings...)
> > I look forward to your completed scene, hopefully with more robot
> > bits...
> >
> > Mark Hanford wrote:
> > >
> > > Here is an update on the robot hand that I started a while ago...
> > >
> > > I've changed the way the palm is modelled, and added some bits from my
> > > electronics.inc
> > >
> > > Having put the model inside a "real" scene (my shed, see web), the
> textures
> > > have really improved, although they are still extremely basic
> > > pigments-with-a-bit-of-reflection.
> > >
> > > I've just noticed that a couple of the objects are floating a bit, and
> the
> > > heel of the hand needs to come down, but anyway...
> > >
> > > --
> > >
> > > Mark Hanford
> > > http://www.mrhanford.com/povray
> > >
> > >  [Image]
> >
> > --
> > signature{
> >   "Grey Knight" contact{ email "gre### [at] yahoocom" }
> >   site_of_week{ url "http://digilander.iol.it/jrgpov" }
> > }
>
>

Post a reply to this message

Attachments:
Download 'Claw.png' (88 KB)

Preview of image 'Claw.png'

As I'm sure you can imagine, state-of-the-art, next-generation, memoryform
shape-changing liquid metal is so cheap it's just not funny any more - it's
the machine for making it that costs the mega-bucks...(You can find a
sneak-preview of this device on the back of the robot hand)

I may be able to persuade the client to swap a state-of-the-art,
next-generation, memoryform shape-changing liquid metal manufacturing system
for some of your rubber tubing - the robot made out of state-of-the-art,
next-generation, memoryform shape-changing liquid metal is having trouble
blending in to more mundane surroundings.

Mark Hanford
http://www.mrhanford.com/povray


"Spock" <spo### [at] nospamcom> wrote in message news:3c69289e@news.povray.org...
> Unfortunately I had a tighter budget and was forced to use rubber tubing
> instead of liquid metal.  Your solution looks much neater and is less
likely
> to get snagged on passing objects.
>
> I will see if the patron wants to spring for a retrofit.  How much does
> state-of-the-art, next-generation, memoryform shape-changing liquid metal
> cost?
>
>
> "Mark Hanford" <ren### [at] blueyondercouk> wrote in message
> news:3c690c7b$1@news.povray.org...
> > Thanks - It certainly is an opposable thumb, in fact all the fingers can
> be
> > wiggled around, you never know when you might need to greet a Vulcan...
> >
> > Length conservation is still handled in a bodge-it'n'leg-it fashion, I'm
> > planning to just stretch the control points a bit depending on the angle
> of
> > the bend.  (At the moment, it does nothing, as you can see from the
> image -
> > no loops)
> >
> > Do to my unlimited materials budget building this robot, I have used
> > state-of-the-art, next-generation, memoryform shape-changing liquid
metal.
> > That's probably how it will stay until I get hold of some old-fashioned
> wire
> > to make the fingers go...
> >
> > (btw, That link to rocketmg is stale...)
> >
> > Mark Hanford
> > http://www.mrhanford.com/povray
> >
> >
> > "Grey Knight" <s16### [at] namtarqubacuk> wrote in message
> > news:3C690852.42A6F04B@namtar.qub.ac.uk...
> > > Is that an opposable thumb I can see? What about length conservation
on
> > > your spline-wires, is that sorted? If you can adapt the string code at
> > > http://www.esite-host.com/~rocketmg/ for use in animations, it might
be
> > > helpful (some of the cloth animators in p.b.a can probably help you
with
> > > this, since cloths are 2D analogues of strings...)
> > > I look forward to your completed scene, hopefully with more robot
> > > bits...
> > >
> > > Mark Hanford wrote:
> > > >
> > > > Here is an update on the robot hand that I started a while ago...
> > > >
> > > > I've changed the way the palm is modelled, and added some bits from
my
> > > > electronics.inc
> > > >
> > > > Having put the model inside a "real" scene (my shed, see web), the
> > textures
> > > > have really improved, although they are still extremely basic
> > > > pigments-with-a-bit-of-reflection.
> > > >
> > > > I've just noticed that a couple of the objects are floating a bit,
and
> > the
> > > > heel of the hand needs to come down, but anyway...
> > > >
> > > > --
> > > >
> > > > Mark Hanford
> > > > http://www.mrhanford.com/povray
> > > >
> > > >  [Image]
> > >
> > > --
> > > signature{
> > >   "Grey Knight" contact{ email "gre### [at] yahoocom" }
> > >   site_of_week{ url "http://digilander.iol.it/jrgpov" }
> > > }
> >
> >
>
>
>

Post a reply to this message

Mark Hanford wrote:

> Length conservation is still handled in a bodge-it'n'leg-it fashion, I'm
> planning to just stretch the control points a bit depending on the angle of
> the bend.  (At the moment, it does nothing, as you can see from the image -
> no loops)

Try http://news.povray.org/povray.binaries.scene-files/20553/ for a string
simulation. I am working on some string macros myself that will do what you want,
but the code is far from release. I'll get an anim together and post it later in
the week if you like.

MJL
--
light_source{9*(y#macro A(H,B,R,T)prism{0,1H+4,0u*9,9v*9,0#local I=1;#while(I<H)
#local V=asc(substr(B,I,1))-33;<div(V,10)mod(V,10)>#local I=I+1;#end pigment{rgb
y}rotate-<90,R>translate-T}#end-z)rgb 9}A(14",6;MWmhryXN3,"60<15,0,8>)box{-99(x+
z)*99pigment{rgb 1}}fog{distance 11}camera{location(y-z)*25look_at 0}A(8"6hiAG=6
"-60x*-10)A(16"/.@VZno=<PLA89/"0x*5) // MJL

Post a reply to this message

On Tue, 12 Feb 2002 11:50:14 -0000, Mark Hanford wrote:
> Here is an update on the robot hand that I started a while ago...
> 
> I've changed the way the palm is modelled, and added some bits from my
> electronics.inc

This looks realy good, sove quite detailed modelling.  

--
#local i=.1;#local I=(i/i)/i;#local l=(i+i)/i;#local ll=(I/i)/l;box{<-ll,
-((I/I)+l),-ll><ll,-l,ll>pigment{checker scale l}finish{ambient((I/l)/I)+
(l/I)}}sphere{<i-i,l-l,(I/l)>l/l pigment{rgb((I/l)/I)}finish{reflection((
I/l)/I)-(l/I)specular(I/l)/I}}light_source{<I-l,I+I,(I-l)/l>l/l} // Steve

Post a reply to this message

That would be great, thanks.  I think that is probably beyond my current
POV/maths skills - I'm having to re-learn stuff I forgot years ago...

I'm working on an IK method of positioning the fingers at the moment, so I
haven't really got time to do string stuff as well!

thanks,

Mark Hanford
http://www.mrhanford.com/povray


"Mark James Lewin" <m_j### [at] yahoocomau> wrote in message
news:3C698C50.5D649F85@yahoo.com.au...
>
>
> Mark Hanford wrote:
>
> > Length conservation is still handled in a bodge-it'n'leg-it fashion, I'm
> > planning to just stretch the control points a bit depending on the angle
of
> > the bend.  (At the moment, it does nothing, as you can see from the
image -
> > no loops)
>
> Try http://news.povray.org/povray.binaries.scene-files/20553/ for a string
> simulation. I am working on some string macros myself that will do what
you want,
> but the code is far from release. I'll get an anim together and post it
later in
> the week if you like.
>
> MJL
> --
> light_source{9*(y#macro A(H,B,R,T)prism{0,1H+4,0u*9,9v*9,0#local
I=1;#while(I<H)
> #local V=asc(substr(B,I,1))-33;<div(V,10)mod(V,10)>#local I=I+1;#end
pigment{rgb
> y}rotate-<90,R>translate-T}#end-z)rgb
9}A(14",6;MWmhryXN3,"60<15,0,8>)box{-99(x+
> z)*99pigment{rgb 1}}fog{distance 11}camera{location(y-z)*25look_at
0}A(8"6hiAG=6
> "-60x*-10)A(16"/.@VZno=<PLA89/"0x*5) // MJL
>
>

Post a reply to this message

Thanks,  it's taken some time...

--

Mark Hanford
http://www.mrhanford.com/povray


"Steve" <ste### [at] zeroppsuklinuxnet> wrote in message
news:slr### [at] zero-ppslocaldomain...
> On Tue, 12 Feb 2002 11:50:14 -0000, Mark Hanford wrote:
> > Here is an update on the robot hand that I started a while ago...
> >
> > I've changed the way the palm is modelled, and added some bits from my
> > electronics.inc
>
> This looks realy good, sove quite detailed modelling.
>
> --
> #local i=.1;#local I=(i/i)/i;#local l=(i+i)/i;#local ll=(I/i)/l;box{<-ll,
> -((I/I)+l),-ll><ll,-l,ll>pigment{checker scale l}finish{ambient((I/l)/I)+
> (l/I)}}sphere{<i-i,l-l,(I/l)>l/l pigment{rgb((I/l)/I)}finish{reflection((
> I/l)/I)-(l/I)specular(I/l)/I}}light_source{<I-l,I+I,(I-l)/l>l/l} // Steve

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I can't see how the hand would close. Am I missing something? I really like
the "clips" at the joints.

 -Shay

Mark Hanford <ren### [at] blueyondercouk> wrote in message
news:3c69016e@news.povray.org...

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