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larrys
Joined: 30 Dec 2002
Posts: 42
Location: SW Ohio
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 Posted: Sat Nov 08, 2003 1:33 am Post subject: |
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Hi all --
Just snagged a Tek C53 scope camera that yielded up a polaroid back for another project and a 56mm f/1.9 (JML) lens. It stretched an inch of a ruler all the way across the glass on my 45 Speed. Problem is the shutter. It's apparently electronic. I have no problem throwing together a little r/c circuit to fire it, but have zero clue what the nine(!) wires coming out of it are. My 11 years at Tek ended 17+ years ago, so there are not likely any contacts left  . Has anyone been into one of these?
thanx,
-ls- |
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Dan Fromm
Joined: 14 May 2001
Posts: 2144
Location: New Jersey
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| Posted: Sat Nov 08, 2003 2:47 pm Post subject: |
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On 2003-11-07 17:33, larrys wrote:
Hi all --
Just snagged a Tek C53 scope camera that yielded up a polaroid back for another project and a 56mm f/1.9 (JML) lens. It stretched an inch of a ruler all the way across the glass on my 45 Speed. Problem is the shutter. It's apparently electronic. I have no problem throwing together a little r/c circuit to fire it, but have zero clue what the nine(!) wires coming out of it are. My 11 years at Tek ended 17+ years ago, so there are not likely any contacts left . Has anyone been into one of these?
thanx,
-ls-
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I bought and eventually got out from under the equivalent HP camera. Are you sure that the camera doesn't have a timing circuit, power supply, etc. built in? My HP did and when I plugged it into the wall it worked. The problem with using its lens is that the shutter was so gigantic.
Cheers,
Dan |
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larrys
Joined: 30 Dec 2002
Posts: 42
Location: SW Ohio
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| Posted: Sat Nov 08, 2003 9:49 pm Post subject: |
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| Quote: |
On 2003-11-08 06:47, Dan Fromm wrote:
I bought and eventually got out from under the equivalent HP camera. Are you sure that the camera doesn't have a timing circuit, power supply, etc. built in? My HP did and when I plugged it into the wall it worked. The problem with using its lens is that the shutter was so gigantic.
Cheers,
Dan
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Hi Dan --
Yeah, all the supporting electronics were there and probably functional, but not very practical to use. But there is hope! I found the wires to the two coils, and can open and close the shutter by pulsing the proper coil with 12 vdc. I can reuse the caps and switching transistors from the scope camera, and time the whole mess with a 555 (they still make those, I hope). A 2" hole and 4 screws will mount the shutter to a board. The rest should fit in a box smaller than a videotape. Yet another winter project that may be done by spring...
-ls- |
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Dan Fromm
Joined: 14 May 2001
Posts: 2144
Location: New Jersey
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| Posted: Sat Nov 08, 2003 11:56 pm Post subject: |
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Hi Dan --
Yeah, all the supporting electronics were there and probably functional, but not very practical to use. But there is hope! I found the wires to the two coils, and can open and close the shutter by pulsing the proper coil with 12 vdc. I can reuse the caps and switching transistors from the scope camera, and time the whole mess with a 555 (they still make those, I hope). A 2" hole and 4 screws will mount the shutter to a board. The rest should fit in a box smaller than a videotape. Yet another winter project that may be done by spring...
-ls-
[/quote]Sigh. We're all crazy here. I've done much the same.
Lotsa work to use an iffy lens, when there are perfectly good lenses around that cost little and will do the job better. In my experience, 'scope cameras are modern-day tarbabies.
Cheers,
Dan |
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