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Ask an Expert Forum Parts list help for a moving camera mount
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  • moving_camera_mount
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Parts list help for a moving camera mount

Former Member
Former Member over 10 years ago

Ok humans! Below is a drive system from an old summa printer. It takes very little force to get that plate moving back and forth. What I want to do is use a stepper motor or a servo ( not sure which would be best) I'm thinking stepper because I am going to want a micro controller for it. We will build anchors/Stand mounts for each side for stability, the end to the right side of the picture is where the motor will attach. So the Idea is that I'll have a motor, a simple 3 or 4 button interface that will control speed, and power. Or maybe I make a set of programs and you can use an up down key to sift through those programs and select a program to run. So far my Internal parts list is, a motor, a micro controller, and power, maybe even a simple display screen, buttons and necessary wires, solder etc. ( do you think I could rob the buttons from an old game controller?). There wont be much more than a couple gopros/ phones on the mount at a time ( so not too much power is required ). We want it to be as smooth as possible for video footage. I'll continue my research, but any help from the fellow creators will be much appreciated, as I'm new to this! Thanks so much for taking the time to look over my project and to take into consideration feedback.

Keep Creating!

Jonimage

image

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  • mcb1
    mcb1 over 10 years ago +2 verified
    Nice Slider. Dynmic Perception have provided the details of one of their products (no longer available) Thankfully they believe in Open Source. https://github.com/DynamicPerception/DollyShield https:/…
  • dougw
    dougw over 10 years ago +1 suggested
    Nice looking lead screw. A stepper motor may have some vibration, especially at slow speeds. I would use a DC gearmotor to get reasonable torque and good low speed operation. It would need an H-bridge…
  • Former Member
    Former Member over 10 years ago in reply to mcb1 +1
    Mark, wow, thanks much! I have a bit of follow up to do! I'll get back to here once I've looked through all the info provided! Thanks again Really appreciate it!
  • clem57
    0 clem57 over 10 years ago

    Forget the power for the moment and consider weight. The heavier the object the more inertia to move and stop the object. This will result in jerky behaviour... Consider how much a print head weighs to how much a camera/phone may weigh.

    Clem

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  • Former Member
    0 Former Member over 10 years ago in reply to clem57

    3lbs max

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  • dougw
    0 dougw over 10 years ago

    Nice looking lead screw.

    A stepper motor may have some vibration, especially at slow speeds. I would use a DC gearmotor to get reasonable torque and good low speed operation. It would need an H-bridge motor driver module and PWM (speed control) generated from your microcontroller.

    Doug

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  • mcb1
    0 mcb1 over 10 years ago

    Nice Slider.

     

    Dynmic Perception have provided the details of one of their products (no longer available)

    Thankfully they believe in Open Source.

    https://github.com/DynamicPerception/DollyShield

    https://github.com/DynamicPerception/MX2_DollyEngine

     

    They used a Dayton Gearmotor 12v 8.8 RPM which gave the benefit of braking.

    DAYTON DC Gearmotor,8.8 rpm,12V,Vented - DC Gearmotors - 2L007|2L007 - Grainger Industrial Supply

     

    However your slider has gearing already and effectively braking, so you might be able to use a smaller higher geared motor.

     

    I have some additional info if you need it.

     

    There are some interesting versions around, and this one is a great example of trying many and coming back to a simple geared motor.

    https://hurleydolly.wordpress.com/page/4/

    (start at the bottom of the page)

     

     

     

    Jay from Dynamic produced some really good videos and guides.

     

     

    Tutorials

     

    Dynamic have produced some good tutorials that cover this controller (MX2).

     

    Jay talking about the MX2 controller http://www.youtube.com/watch?v=L6hOmskEgWw

     

    Continuous move http://www.youtube.com/watch?v=3Xl8AXmg43c

     

      Shoot Move Shoot http://www.youtube.com/watch?v=CgjoK7xlLaQ

     

    HDR and ramping speed http://www.youtube.com/watch?v=MVlU_4e7WU8

     

    Post shoot processing http://www.youtube.com/watch?v=_ART-xXaDsY

     

     

     

    Mark

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  • Former Member
    0 Former Member over 10 years ago in reply to dougw

    Thank you Douglas!

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  • Former Member
    0 Former Member over 10 years ago in reply to mcb1

    Mark, wow, thanks much! I have a bit of follow up to do! I'll get back to here once I've looked through all the info provided! Thanks again Really appreciate it!

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  • mcb1
    0 mcb1 over 10 years ago in reply to Former Member

    Jon

    Correct me if I'm wrong, but is this one of those printers that passes the paper past the head.

    I'm struggling to see how the bit in the middle is supported.

     

    Regardless of that, the lead screw, centre nut and pillow blocks are very useful for a slider.

     

    I might need to put someone ontp finding one of them for me ....

     

    Mark

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  • balearicdynamics
    0 balearicdynamics over 10 years ago in reply to mcb1

    This is a Great correct answer! I am making some tests again on a low cost product I am developing and your links contains some very useful information and answers to a couple of doubts I was thinking... Thanks, Mark image

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  • mcb1
    0 mcb1 over 10 years ago in reply to balearicdynamics

    Thanks Enrico.

     

    I made a slider after seeing this article.

    http://forum.timescapes.org/phpBB3/viewtopic.php?f=24&t=6444&start=0

     

    and this video

    http://vimeo.com/23673555

     

    They are based on an extrusion but it seems that if you enter " CAMERA SLIDER TRACK " into ebay or asian suppliers, you can find very similar products.

    I purchased a 1.5m (59 inch) IGUS Slider from the nz supplier for approx NZD$300 which was just the track and slider (no feet, no bubble, or locking screw)

     

    It was intended to be published as an article in "The Shed" magazine however Dynamic Perceptions stopped stocking the important parts.

    We have located the alternatives and the intention is to reschedule for later in the year using our own boards.

     

    In the meantime I have quite a few answers and an example.

    PM me and I'll give you the link.

     

    Mark

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  • Former Member
    0 Former Member over 10 years ago in reply to mcb1

    Mark,

    The printer head moves, paper only feeds to reveal new surface. Imagine that suspended, and the metal plate on the bottom is where the printer head is attached. the printer head will travel that distance in about 1 second. I want to take that functionality down to 2 hour passes. give or take. In its current position, If I twist the screw the entire beam passes through the metal plate's support loop. I'll post a link when we have a working prototype.

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