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Subject: 
Re: Pneumatic Camera Tilt Unit
Newsgroups: 
lugnet.animation, lugnet.build, lugnet.technic
Date: 
Tue, 7 Oct 2003 16:59:49 GMT
Viewed: 
172 times
  
At 07:12 AM 10/7/2003, you wrote:
It only now occur to me that it's animation we're talking about, not
filming. In
that case it does not matter hos long it takes etc. between the shots (sure,
fast is better it don't need to be 30fps fast). Then you could easily build a
mechanic solution, motorized if you wish.

Yes, stop-motion has much different requirements than realtime filming.
Actually, if I was looking for a fast realtime cut from top to bottom, the
current mechanism is perfect. It moves quite fast.

In lack of a rotation sensor you can use the lightsensor, if that's
availible to
you, see this by Rob Stehlik:
http://sparky.i989.net/rstehlik/images/robots/digger/dd22.jpg

For some very odd reason sparky.i989.net always results in a 404 for me,
running IE 6, XP Pro. Any clue why?

Looks like Bob Kojima is working on a little something:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=58358

Yes, that looks like what I was thinking of. It's a little high off the
ground for filming, but perhaps the camera could be set on an outrigger or
something. With feet that big, you could put a masonry brick on an
outrigger and it wouldn't fall over...the camera doesn't hardly weigh anything.

If you need to have the camera close to the ground, either elevate the "studio
ground" (or lower the camera tilt/pan under ground level), or hang the camera
under the turntable.

I've been thinking about that, and in the shower today I realized that
using a ganged piston system like Kevin suggested would not work without
doing exactly that - elevating the studio floor or putting the camera below
ground level. Neither of these are simple, especially for the current film
project - my "studio" is about 3'x3' and a good 8" high. Not easy to work
with at all.

Also, I realized that with a ganged piston system, the platform would have
to be raised a piston shaft's length above the ground in order to obtain a
skyward point of view. This means that the platform must be anchored in
front several studs off the ground - which is not good for things like
portraits or closeups. The platform ideally ought to be touching the
ground. So without Tobbe's in-ground camera system suggestion, I either
need two more pistons or a different idea. Since I'm not a rich guy, I
started thinking alternatives. (sorry, Kevin!)

I'm evaluating the merits of a mechanical system with some sort of triangle
lever system. I know I'm not explaining this well, so I'll just have to
build it. Maybe I'll be able to get to that later today.

Take a look at the great roller designs out there too (see under Turntables,
specificly the ones by Beat Felber):
http://www.lugnet.com/technic/gears

Wow, Beat has done some fantastic work. The first version of his turntable
interests me greatly - it's low to the ground, pretty compact, feasible for
my parts collection, and solid enough that I could possibly put the camera
on an outrigger if I needed to get it low to the ground. I'm not sure I'll
need to be low to the ground for my project, though - I pretty much just
want to do a sweep of the "valley":

http://www11.brinkster.com/buachaille/vodb_valley.jpg

Later that will be covered with sand. I'm not the only one that likes how
the valley turned out, either: http://www11.brinkster.com/buachaille/cat.jpg.

It would be nice to have an all-around tilt/pan system for future projects,
though.

I'm still thinking about the pneumatic systems idea. I wish there was the
pneumatic equivalent of a transformer.

Till the next brainstorm and thanks for the input,
~Mike



Message has 1 Reply:
  Re: Pneumatic Camera Tilt Unit
 
(...) [snip] (...) Your original system had the pistons underneath the platform, right? You must be assuming that the ganged pistons would be underneath. This is not a requirement. I'm not advocating for ganged pistons. I'd think that a geared (...) (21 years ago, 7-Oct-03, to lugnet.animation, lugnet.build, lugnet.technic)

Message is in Reply To:
  Re: Pneumatic Camera Tilt Unit
 
(...) It only now occur to me that it's animation we're talking about, not filming. In that case it does not matter hos long it takes etc. between the shots (sure, fast is better it don't need to be 30fps fast). Then you could easily build a (...) (21 years ago, 7-Oct-03, to lugnet.animation, lugnet.build, lugnet.technic)

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