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Thread: Need Packard shutter solenoid mod

  1. #11
    come to the dark s(l)ide..... Carsten Wolff's Avatar
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    Re: Need Packard shutter solenoid mod

    I went with a 485:1-geared 12V micro-motor (Faulhaber) which I picked up on the bay for 12 quid, (in my case to actuate a Prontor #1 on a 5x7" underwater camera). Works a charm and doesn't draw current between actuations, but I don't do timed exposures via the triggering mechanism.
    http://www.jeffbridges.com/perception.html "Whether you think you can, or think you can't, you are right."

  2. #12
    Jac@stafford.net's Avatar
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    Re: Need Packard shutter solenoid mod

    Quote Originally Posted by Randy Moe View Post
    So easy to say, 'Yes please Jac', I would love a photo of it.

    Thanks!
    The shutter is from an 8x10" research camera I made into a 90 degree angle camera for pictures of the stars. This shutter fit between the cells of a Metrogon lens, of which I have several, but no more shutters!

    Click image for larger version. 

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    And the camera in operating position.

    http://www.digoliardi.net/skc/skc1.jpg

    I have many more pictures and can put up the whole web page if you like.

    Gosh, I wish I had not sold that camera.

  3. #13
    Tin Can's Avatar
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    Re: Need Packard shutter solenoid mod

    Very interesting! Love that camera, all shiny and sleek.

    The manual lever for the shutter is a good idea.

    A website on your camera may be a good idea to show the whippersnappers how it was done.

    Not sure where I'm going yet, so many projects...

    Quote Originally Posted by Jac@stafford.net View Post
    The shutter is from an 8x10" research camera I made into a 90 degree angle camera for pictures of the stars. This shutter fit between the cells of a Metrogon lens, of which I have several, but no more shutters!

    Click image for larger version. 

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Views:	46 
Size:	30.8 KB 
ID:	110216


    Click image for larger version. 

Name:	sb.jpg 
Views:	34 
Size:	60.3 KB 
ID:	110217

    And the camera in operating position.

    http://www.digoliardi.net/skc/skc1.jpg

    I have many more pictures and can put up the whole web page if you like.

    Gosh, I wish I had not sold that camera.

  4. #14
    Tin Can's Avatar
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    Re: Need Packard shutter solenoid mod

    Thanks Carsten, and I see there are many of this type on eBay.


    Quote Originally Posted by Carsten Wolff View Post
    I went with a 485:1-geared 12V micro-motor (Faulhaber) which I picked up on the bay for 12 quid, (in my case to actuate a Prontor #1 on a 5x7" underwater camera). Works a charm and doesn't draw current between actuations, but I don't do timed exposures via the triggering mechanism.

  5. #15
    Tin Can's Avatar
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    Re: Need Packard shutter solenoid mod

    Robot parts, duh!

  6. #16
    Jac@stafford.net's Avatar
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    Re: Need Packard shutter solenoid mod

    Quote Originally Posted by Randy Moe View Post
    Robot parts, duh!
    http://www.robotshop.com/

    My favorite source: http://www.servocity.com/

  7. #17
    Tin Can's Avatar
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    Re: Need Packard shutter solenoid mod

    I have not built a robotic device in many years, long before the Internet. Amazing stuff for cheap. This will be the way to run my Packard and sync.

    I'm slow sometimes, but finally the LED lit up.

    Thanks everyone for all the old school recommendations.

    Is it LF if I run a shutter with a micro computer? That's rhetorical. Does not apply on this forum, but what would APUG say?

    Quote Originally Posted by Jac@stafford.net View Post

  8. #18
    Tin Can's Avatar
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    Re: Need Packard shutter solenoid mod

    If you are interested watch this simple video demo of servo testing and programing.

    https://www.youtube.com/watch?v=AqToEWmTVXA

  9. #19

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    Re: Need Packard shutter solenoid mod

    Little known fact: a brush-type DC motor operated under constant current becomes a torque motor.

    So a hobby-shop 12VDC motor fed from a current source, with a piece of dial cord wrapped on the shaft, can be used to create linear motion. Loop the cord and put in a small spring to keep it snug, and you have a reversible linear drive with a zero-power position at each end of the travel. The same boost/hold idea can be used by simply using the current source to charge a capacitor during the idle time---the capacitor will deliver a real current surge (briefly) when the switch closes.

  10. #20
    Tin Can's Avatar
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    Re: Need Packard shutter solenoid mod

    I saw a video with a home wound motor doing just that.

    I am hoping I can achieve variable shutter speeds with a little more than the controler in the video. The controller and servo cost $30.

    Quote Originally Posted by Harold_4074 View Post
    Little known fact: a brush-type DC motor operated under constant current becomes a torque motor.

    So a hobby-shop 12VDC motor fed from a current source, with a piece of dial cord wrapped on the shaft, can be used to create linear motion. Loop the cord and put in a small spring to keep it snug, and you have a reversible linear drive with a zero-power position at each end of the travel. The same boost/hold idea can be used by simply using the current source to charge a capacitor during the idle time---the capacitor will deliver a real current surge (briefly) when the switch closes.

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