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Author Topic: more mischief with the sun 640  (Read 1801 times)

moominsean

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more mischief with the sun 640
« on: April 17, 2009, 10:08:30 PM »
thanks a bunch, francois. another project.

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Francois

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Re: more mischief with the sun 640
« Reply #1 on: April 17, 2009, 10:15:46 PM »
Going from one thread to the next:

The Polaroids run on 6 volts which is fed through the bottom of the film pack. As for adjusting the ISO, it should be possible to add a potentiometer to the cell... depending on the type of cell they used. Or more simply to put a ND filter somewhere down the optical path...
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Francois

Film is the vinyl record of photography.

moominsean

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Re: more mischief with the sun 640
« Reply #2 on: April 17, 2009, 10:22:23 PM »
this is not the droid you are looking for...

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moominsean

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Re: more mischief with the sun 640
« Reply #3 on: April 17, 2009, 10:26:35 PM »
it was actually fairly easy to pull apart. i figure this shouldn't be too difficult, really... just give it a power supply. cut off the bottom and attach a back to the bottom. the leads for the power supply are super obvious because they lead straight to the underside where they would connect to the pack.

has *anyone* ever done this before? not that they would need a reason to make a crappy polaroid camera from a crappy polaroid. at least it's fixed focus. i'm not even sure that the exposure matters? as it always shoots 600 film with a flash on. just a matter of supplying power to the shutter and flash.

i'll probably stick with a filter, so i can use different film pack types. and the power supply is probably about the limit of my electrical installment possibilities. i can't even pronounce potentiometer.

i'm taking lots of photos so i can get it back together properly. there are always little bits that just fall off.

this is interesting as well...a repair record inside the camera.

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« Last Edit: April 17, 2009, 10:30:42 PM by moominsean »
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Francois

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Re: more mischief with the sun 640
« Reply #4 on: April 17, 2009, 10:49:01 PM »
6 volts = 4 AA batteries in a plastic holder.

The camera has a variable speed shutter and fixed aperture. Flash is optional if you press only the back button (L shaped thing behind the red one).
Quote from: moominsean on April 17, 2009, 10:26:35 PM
has *anyone* ever done this before?
Answer: no  ;)
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Francois

Film is the vinyl record of photography.

moominsean

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Re: more mischief with the sun 640
« Reply #5 on: April 17, 2009, 11:28:02 PM »
he had a vision, warped as it was...

of course, i will blog the hell out of this next week.

i guess i'll have to situate the battery pack outside the camera somewhere.

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moominsean

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Re: more mischief with the sun 640
« Reply #6 on: April 18, 2009, 12:52:43 AM »
i was thinking about the exposure... if the camera shoots at 640 and the film is 100, then a filter isn't going to do anything. the film will just be even more underexposed. hmmm....

edit: actually, i guess it would go over the meter, so it would increase the exposure time. it already has a slide that switches from darker to lighter...i can just tack on a darker filter to it.
« Last Edit: April 18, 2009, 06:56:58 AM by moominsean »
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moominsean

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Re: more mischief with the sun 640
« Reply #7 on: April 18, 2009, 11:56:53 PM »
ran into a snag, which may require buying another camera just to see exactly how it works. the camera needs to think there is a pack of film in it or the shutter won't fire. it's not enough that the battery connects (because and empty pack can still have a charge). so i'm not sure about the exact mechanisms that do this, and my camera may be too far gone. i get power to it and the flash charges, but that's it. it's 75 percent intact, but the gears are gone.

this sounds like a moomintech project!

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Skorj

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Re: more mischief with the sun 640
« Reply #8 on: April 19, 2009, 11:14:41 AM »
Surely you can find the pack sensor? Hot-wire it? I did a few Spectra repairs once... They come apart nicely when you find the magic pin...

Skj.
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moominsean

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Re: more mischief with the sun 640
« Reply #9 on: April 19, 2009, 12:14:11 PM »
yeah i figure i can, but i think i need a whole camera to locate it. cutting off the bottom and removing some gears makes it tough to see what connected to what. i have a couple 99 cent bids on flip-top 600 cameras on ebay.
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Francois

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Re: more mischief with the sun 640
« Reply #10 on: April 19, 2009, 03:51:18 PM »
When you look at the camera from the front, the film pack sensor is a small plastic lever on the left. Hard to see but there. It must be hooked up to a switch (or simply a spring metal contact)
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Francois

Film is the vinyl record of photography.

moominsean

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Re: more mischief with the sun 640
« Reply #11 on: April 20, 2009, 01:09:53 AM »
the green thing is what i figure, but even when i push that in i get nothing...but i took out some parts.
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