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    Remote control circuit posted
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    I have carefully researched the two external camera control interfaces and designed a remote control which controls Record, Iris, Zoom and allows dual manual focus positions. The circuit and instructions have been put on my website:


    http://www.beyondmonochrome.co.uk/ma...les/remote.pdf

    hope this is of use
    kind regards
    Chris Woodhouse ARPS
    Toyo AII, Mamiya RB67/7II, Leica R9/M6, HMC151, Panasonic GH2, Devere 504, Mac/FCP


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    Senior Member Allen Ellis's Avatar
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    Wow! What a detailed explanation. Thanks very much for your hard work... I don't really have an electronics background like that, and I'd be a little afraid to connect my first such project to my only pro camera. But I'm sure it'll be useful for others, thanks for sharing
    --Allen Ellis


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    #3
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    Great stuff!

    I usually stay in the digital domain leave the analog stuff to other people, but I would be interested in being able to hook a small microcontroller up to program some moves over time (like rack focus and maybe zoom and iris too.

    Ideas about how to hook that up would be welcome - than I'd be happy to write the code to do it, with an LCD & keypad for menu & programming.
    C100 + Ninja 2, 5D3, Canon XF + XA, GH4, FCPX, FCP7, CS6 etc
    Corporate & Event Videos
    Photo Booth Hire in Yorkshire


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    Senior Member ChrisPrine's Avatar
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    This looks great! The rack focus would be so handy! I can't wait to build this.
    Latest project: Twenty Million People, a romantic comedy feature film
    Escape Pod Films


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    I made a few small corrections; my voice recognition software made some funny mistakes and I forgot to point out that the potentiometers give the nicest action if they are of the linear type.
    kind regards
    Chris Woodhouse ARPS
    Toyo AII, Mamiya RB67/7II, Leica R9/M6, HMC151, Panasonic GH2, Devere 504, Mac/FCP


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    Senior Member ChrisPrine's Avatar
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    22k seems to be an obscure value for a pot (or am I crazy?). How about 20k pot and 30k resistor in parallel?
    Latest project: Twenty Million People, a romantic comedy feature film
    Escape Pod Films


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    22K is what they call a preferred value. There are several ranges, based on the tolerance of the resistor family. You get odd values 1, 1.8, 2.2, 3.6, 4.7, 5.6. The idea is that the values never overlap when their tolerances are taken into account

    The following explains how it works
    http://www.logwell.com/tech/componen...or_values.html

    regards
    Chris Woodhouse BSc. MEng.


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    Senior Member ChrisPrine's Avatar
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    Ok, thanks! Totally not an engineer here, just a tinker.
    Was thinking about having jacks instead of hard wired cables, but a 4 pole 3.5mm panel mount doesn't seem to exist.

    Quote Originally Posted by cwoodhou View Post
    22K is what they call a preferred value. There are several ranges, based on the tolerance of the resistor family. You get odd values 1, 1.8, 2.2, 3.6, 4.7, 5.6. The idea is that the values never overlap when their tolerances are taken into account

    The following explains how it works
    http://www.logwell.com/tech/componen...or_values.html

    regards
    Chris Woodhouse BSc. MEng.
    Latest project: Twenty Million People, a romantic comedy feature film
    Escape Pod Films


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    Senior Member DPStewart's Avatar
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    Dude...

    Could you be any more awesome?


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    Senior Member modus's Avatar
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    Quote Originally Posted by DPStewart View Post
    Dude...

    Could you be any more awesome?
    I second this. Great work, both with the r&d and the clear, articulate instructions.


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