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Remote triggering multiple cameras, and transferring images to HD

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Offline waterwingz

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Re: Remote triggering multiple cameras, and transferring images to HD
« Reply #10 on: 24 / October / 2013, 22:10:59 »
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Quote from: andrew.stephens.754365 on 24 / October / 2013, 20:51:22
Thanks waterwingz [and thanks for the script also (if closely examined all of these 'things' add to the understanding of others) - and that is a 'gift'].
I can think of other ways to make the script support precision sync but they all tend to be a kludge. 

For example, 
  • the script watches the USB status for a pulse
  • If it sees a short pulse  ( <500mSec) , then it goes into shooting mode and starts a shot ( shoot() ) the next time the USB power turns on.  If USB Sync is enabled,  the shot will wait for the USB power to go back to 0V to complete - effectively syncing all cameras
  • If it sees the USB power stay active for >500mSec,  it switches to PTP transfer mode (i.e. USB remote disabled) and stays there until the USB power goes away. 
   
The code gets more complicated at that point and it requires some skill or a uController to generate the correct pulses.  But its possible.
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Ported :   A1200    SD940   G10    Powershot N    G16
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Offline ikercito

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Re: Remote triggering multiple cameras, and transferring images to HD
« Reply #11 on: 25 / October / 2013, 09:28:57 »
Thanks a lot waterwingz, the script works perfectly! It behaves just the same as Remote On, but after 10secs powered up, reverts back to PTP transfer. It's just what i needed. Very clever workaround, thanks again.
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Offline andrew.stephens.754365

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Re: Remote triggering multiple cameras, and transferring images to HD
« Reply #12 on: 25 / October / 2013, 11:56:35 »
    Quote from: waterwingz on 24 / October / 2013, 22:10:59
    I can think of other ways to make the script support precision sync but they all tend to be a kludge. 

    For example, 
    • the script watches the USB status for a pulse
    • If it sees a short pulse  ( <500mSec) , then it goes into shooting mode and starts a shot ( shoot() ) the next time the USB power turns on.  If USB Sync is enabled,  the shot will wait for the USB power to go back to 0V to complete - effectively syncing all cameras
    • If it sees the USB power stay active for >500mSec,  it switches to PTP transfer mode (i.e. USB remote disabled) and stays there until the USB power goes away. 
       
    The code gets more complicated at that point and it requires some skill or a uController to generate the correct pulses.  But its possible.

    Useful comment/analysis as always waterwingz. I'm not sure the signalling wouldn't work with the ucontroller architecture I briefly discussed [more a list of components ::)] here http://chdk.setepontos.com/index.php?topic=8769.msg106093#msg106093. For my requirement, with instant download probably preferable, chdkptp will be first investigation port - but your approach is definitely something to keep in mind.

    For those interested in further ptpcam investigations, do you happen to have in memory a more 'advanced' auto dowload topic than this http://chdk.setepontos.com/index.php?topic=9097.0 ?[/list]
    « Last Edit: 25 / October / 2013, 12:14:34 by andrew.stephens.754365 »
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    Offline jesse.denny.14

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    Re: Remote triggering multiple cameras, and transferring images to HD
    « Reply #13 on: 24 / April / 2014, 18:16:22 »
    Hello Everyone,

    I'm running this script (usbptp.lua) and all is shooting sorta well... i'm just having issue with keeping the cameras on.

    Buy the time i get to the point of uploading the photos to my laptop some of the cameras have shut off...(and others have not.)

    And sometime they have shut off by the time even what the flick the switch to take a shot

    any ideas on how to keep the cameras on all the time, ps (they are running on ac power)

    Many thanks,

    jd
    « Last Edit: 24 / April / 2014, 18:18:21 by jesse.denny.14 »
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    Offline waterwingz

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    Re: Remote triggering multiple cameras, and transferring images to HD
    « Reply #14 on: 24 / April / 2014, 18:29:57 »
    Quote from: jesse.denny.14 on 24 / April / 2014, 18:16:22
    any ideas on how to keep the cameras on all the time, ps (they are running on ac power)
    In the CHDK Settings menu,  set the  Disable LCD Off menu item to Always.
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    Ported :   A1200    SD940   G10    Powershot N    G16
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    Offline jesse.denny.14

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    Re: Remote triggering multiple cameras, and transferring images to HD
    « Reply #15 on: 01 / May / 2014, 23:19:45 »
    Hey there,

    Many thanks for that, also i found the auto shutdown option in the Power Save Settings in the standard menu.

    That seems to work for now.

    any idea on how to pre set the zoom using the usbptp script on auto start up.

    Cheers,
    Jesse
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    Offline waterwingz

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    Re: Remote triggering multiple cameras, and transferring images to HD
    « Reply #16 on: 02 / May / 2014, 07:15:38 »
    Quote from: jesse.denny.14 on 01 / May / 2014, 23:19:45
    any idea on how to pre set the zoom using the usbptp script on auto start up.
    Add set_zoom(value) to the script?  You can either hard code the value uses or add an @param to the script header to allow it to be set by the user.
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    Ported :   A1200    SD940   G10    Powershot N    G16
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    Offline jesse.denny.14

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    Re: Remote triggering multiple cameras, and transferring images to HD
    « Reply #17 on: 02 / May / 2014, 11:42:59 »
    okay sweet,

    lastly can you point me to the direction,

    Using this script.

    the camera goes to ptp mode.

    windows download manager pops up and i start downloading.

    when i browse the files I can't see any of DNG files or folders they are in.

    Any idea how i can get window to see them?


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    Offline waterwingz

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    Re: Remote triggering multiple cameras, and transferring images to HD
    « Reply #18 on: 02 / May / 2014, 12:19:36 »
    Quote from: jesse.denny.14 on 02 / May / 2014, 11:42:59
    Any idea how i can get window to see them?
    This is a very old problem with RAW/DNG and CHDK.  You can experiment with changing the file extension used for the RAW/DNG files using the entries in the RAW menu.  Look for one that will be recognized when you are connected via US.
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    Ported :   A1200    SD940   G10    Powershot N    G16
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    Offline jesse.denny.14

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    Re: Remote triggering multiple cameras, and transferring images to HD
    « Reply #19 on: 05 / May / 2014, 12:12:43 »
    So here is where i stand,

    I have gone into the raw menu and told it to change the extension.

    when i go into the file explorer in the camera the dng files ( with extension of .jpg) are there,

    but i still can’t see the folder that there in from window explorer.

    I can see the files when i take the sd card out and us mac finder.  but i don’t want to take out 32 sd cards every time.

    is there a different explore program that i can use?
    or could it put them into a normal folder instead of a .tmp folder?




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