[Frameworks] how to power a projector mounted on a rotating device

Mon Jul 25 19:22:35 UTC 2016

Thanks everyone for the excellent suggestions. I knew FW was the right place to ask!

Scott Stark
www.scottstark.com

-----Original Message-----
From: FrameWorks [mailto:frameworks-bounces at jonasmekasfilms.com] On Behalf Of John Muse
Sent: Monday, July 25, 2016 8:17 AM
To: Experimental Film Discussion List <frameworks at jonasmekasfilms.com>
Subject: Re: [Frameworks] how to power a projector mounted on a rotating device

Scott, Jeanne and I have used many of these for video installations: https://www.sldlighting.com/ac-motor-turntable-with-rotating-outlet-50-lb-capacity-12-top  Reliable.  We've ordered them with 1rpm motors.

Good luck!

j

On Jul 25, 2016, at 9:06 AM, Mani Mazinani <mani.mazinani at gmail.com> wrote:

> Marco's machine looks wonderful.  Toronto artist John Shipman has constructed what Scott is looking for an installation using slide projectors.  It uses the slip ring things mentioned previously. His website will have more information and his email address as well. 
> 
> Best,
> Mani
> 
> 
> On Jul 25, 2016 07:15, "Marco Poloni" <mar.poloni at gmail.com> wrote:
> Hello,
> Years ago I built some camera pan/tilt heads using 10- to 12- contacts 
> electrical slip rings to power the head, transmit positional data data 
> to the device, and collect the video signal. See pic. They work 
> fantastic. I can't recall which brand of rings I used. I later learned 
> they were a sub-contractor of Lockheed-Martin... Better to choose a 
> some supplier that is not affiliated to the military industry. Moflon 
> maybe?
> 
> My two cents.
> 
> Best,
> Marco
> 
> On 25 July 2016 at 06:12, Bryan Konefsky <bkonefsky at gmail.com> wrote:
> > Hey Scott and all - regarding rotating turntables that include 
> > rotating AC - see this link:
> >
> > http://www.vuemore.com/?gclid=Cj0KEQjwztG8BRCJgseTvZLctr8BEiQAA_kBD9
> > Fw3HF-6RCdrntuK6afHo7TQApVQy3Bx_eRTy707z0aApsm8P8HAQ
> >
> > I've purchased several over the years and they are fantastic... I 
> > suspect if you add a rheostat you could also change the rpms of the unit.
> >
> > best,
> > bryan konefsky
> >
> > On Sun, Jul 24, 2016 at 8:26 PM, Karl Reinsalu <kreinsalu at gmail.com> wrote:
> >>
> >> I recall a 35mm installation that used an ac cable with a pre-built 
> >> slip ring design. They built the turntable and film looper 
> >> themselves, but sourced the cable from a film industry rental 
> >> house. Might be worth an inquiry with a production house like 
> >> William F Whites or similar. Otherwise possibly an industrial electrical parts supplier? Best of luck!
> >>
> >> __
> >> Karl Reinsalu - Cinematography
> >> "Sent from my pocket through space and time."
> >>
> >>
> >> On Jul 24, 2016 11:02 PM, "Ryder White" <ryder.white at gmail.com> wrote:
> >>>
> >>> Hi Scott,
> >>>
> >>> I've been trying to figure this out too for some time, and as far 
> >>> as I can tell you need something like this:
> >>>
> >>> https://www.sparkfun.com/products/13063
> >>>
> >>> Or any other sort of "slip ring" that is rated for sufficient current.
> >>> The issue with a turntable is you would probably have to rig your 
> >>> power supply from the top since the slip ring has to be on the 
> >>> radial axis of the platform, and underneath the turntable you'd 
> >>> have a bunch of moving parts and gak. But this is all conjecture since I've never followed through on it.
> >>> If anyone out there has executed something like this I would be 
> >>> really interested to see some pictures.
> >>>
> >>> Best,
> >>>
> >>> Ryder
> >>>
> >>> On Sunday, 24 July 2016, Scott Stark <sstark at hi-beam.net> wrote:
> >>>>
> >>>> Hi all, does anyone have an idea of how to supply power to a 
> >>>> projector that’s set on a rotating device such as a turntable? Is 
> >>>> there such a thing as a rotating power supply?
> >>>>
> >>>>
> >>>>
> >>>> I saw this – the main cylinder wouldn’t do it but the part that 
> >>>> attaches to the wall does rotate 360, but I can’t quite figure how to make it work.
> >>>>
> >>>>
> >>>>
> >>>> https://www.youtube.com/watch?v=u64Kn5ENkE0
> >>>>
> >>>>
> >>>>
> >>>> Just wondering if anyone’s found a device designed for such.
> >>>>
> >>>>
> >>>>
> >>>> thanks –
> >>>>
> >>>>
> >>>>
> >>>> Scott Stark
> >>>>
> >>>> scottstark.com
> >>>>
> >>>> Experimental Response Cinema
> >>>>
> >>>> Flicker
> >>>>
> >>>>
> >>>
> >>>
> >>>
> >>> --
> >>>
> >>> Sent from mobile device, please forgive typographic errors. -RTW
> >>>
> >>>
> >>> _______________________________________________
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> >>> FrameWorks at jonasmekasfilms.com
> >>> https://mailman-mail5.webfaction.com/listinfo/frameworks
> >>>
> >>
> >> _______________________________________________
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> >>
> >
> >
> >
> > --
> > Bryan Konefsky
> > Professional product tester
> >
> > Great art has always gone to the masses, to their hopes and dreams, 
> > for that spark that kindled their souls. The rest, "the many, all 
> > too many" as Nietzsche called mediocrity, have been mere commodities 
> > that can be bought with money, cheap glory, or social position.
> > - Emma Goldman
> >
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> >
> 
> 
> 
> --
> 
> 
> 
> Marco Poloni
> http://www.theanalogueislandbureau.net
> Usedomer Strasse 8
> D – 13355 Berlin
> gsm de +49.163.6294080
> gsm ch +41.78.6322028
> skype marcopoloni
> 
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j/PrM

*************************************************

john muse
visual media scholar
haverford college
http://www.finleymuse.com
http://www.haverford.edu/faculty/jmuse
http://haverford.academia.edu/JohnMuse

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