Multi-camera setup project. - page 12 - Creative Uses of CHDK - CHDK Forum
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Multi-camera setup project.

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Offline mphx

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Re: Multi-camera setup project.
« Reply #110 on: 09 / August / 2014, 10:00:50 »
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UPDATE :

all cameras present :) Most of the dummy batteries arrived. Studio almost done.. we set up tripods yesterday .Forgot to take pics :(

Now i have to install chdk into 64 sd cards !!

We will start mounting cameras by the end of the month...
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Offline waterwingz

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Re: Multi-camera setup project.
« Reply #111 on: 09 / August / 2014, 11:19:24 »
Quote from: mphx on 09 / August / 2014, 10:00:50
Now i have to install chdk into 64 sd cards !!
Refresh my memory?  How are you planning to trigger all these cameras?  ( i.e. will you be needing precision sync and if so, via battery terminal or USB 5V?)
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Offline mphx

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Re: Multi-camera setup project.
« Reply #112 on: 09 / August / 2014, 14:59:20 »
@waterwingz

Through chdkptp and multicam commands.Project doesn't need that much of accuracy in syncing since the "objects" will be relatively still and the plan is to use fast shutter speed.

Small movements during shooting will be handled through after-shoot processing....

All that in theory...we will be doing tests when we will mount the cameras and see how good sync will be with 64 cameras and secondary parameters (exposure , shutter speed , iso , etc)
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Offline reyalp

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Re: Multi-camera setup project.
« Reply #113 on: 09 / August / 2014, 16:08:54 »
Quote from: mphx on 09 / August / 2014, 10:00:50
Now i have to install chdk into 64 sd cards !!
Your mileage may vary, but I would approach this by setting up one card, making a disk image, and then writing that to the remaining cards. On linux (or using a live CD) this can be done easily with dd. I'm sure there's some windows software that will do it too.

After the cards are bootable, you can update by uploading files through chdkptp.
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Offline mphx

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Re: Multi-camera setup project.
« Reply #114 on: 09 / August / 2014, 16:52:02 »
Quote from: reyalp on 09 / August / 2014, 16:08:54

After the cards are bootable, you can update by uploading files through chdkptp.

What do you mean by this ? That you can update chdk , by uploading some "files" of chdk through chdkptp ?
And it can be done for multiple cameras lets say? :)
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Offline waterwingz

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Re: Multi-camera setup project.
« Reply #115 on: 09 / August / 2014, 17:00:44 »
Quote from: mphx on 09 / August / 2014, 16:52:02
Quote from: reyalp on 09 / August / 2014, 16:08:54

After the cards are bootable, you can update by uploading files through chdkptp.

What do you mean by this ? That you can update chdk , by uploading some "files" of chdk through chdkptp ?
And it can be done for multiple cameras lets say? :)
Other than the first time I setup an SD card for CHDK,  it almost never comes out of the camera again.  Script and CHDK core code get downloaded as updates appear or I make changes while working on code. Downloading to multiple cameras would be a simple extension for multicam.lua (assume it does not already do that?)

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Offline reyalp

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Re: Multi-camera setup project.
« Reply #116 on: 09 / August / 2014, 17:45:26 »
Quote from: mphx on 09 / August / 2014, 16:52:02
What do you mean by this ? That you can update chdk , by uploading some "files" of chdk through chdkptp ?
Yes, chdkptp can upload files. See the upload and mupload commands.
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And it can be done for multiple cameras lets say? :)
There isn't currently code in multicam.lua to do this, but it could be done similarly to how the old download_last command was implemented.

Uploading a set of files to all cameras is a worthwhile addition to multicam, so I will try to add that at some point. As usual, no particular schedule.
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Offline mphx

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Re: Multi-camera setup project.
« Reply #117 on: 09 / August / 2014, 17:46:56 »
Quote from: waterwingz on 09 / August / 2014, 17:00:44
Other than the first time I setup an SD card for CHDK,  it almost never comes out of the camera again.  Script and CHDK core code get downloaded as updates appear or I make changes while working on code. Downloading to multiple cameras would be a simple extension for multicam.lua (assume it does not already do that?)

ok , with scripts i get it. Just copy the scripts to their folder.CHDK core code? How is this done?just copy the new file(s) to the card and reboot the camera? copy diskboot.bin or are more files involved to the "update"?
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Offline reyalp

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Re: Multi-camera setup project.
« Reply #118 on: 09 / August / 2014, 17:57:45 »
Quote from: mphx on 09 / August / 2014, 17:46:56
copy diskboot.bin or are more files involved to the "update"?
For an updated build, you should copy the files in the "small" download package on the autobuild site. This is DISKBOOT.BIN, PS.FI2 and the stuff in CHDK/MODULES

PS.FI2 is only used for manual loading with firm update, but it can be useful to have on the card.

For an initial install, you need everything in the large download. This includes some script libraries and other files.

If you need specific CHDK settings, you could also copy the .cfg files between cameras. This should be totally fine if they are all the same model. If you copy between different models, some settings will be reset. Alternately, you could use set_config_value with multicam.
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Offline mphx

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Re: Multi-camera setup project.
« Reply #119 on: 09 / August / 2014, 18:54:09 »
Quote from: reyalp on 09 / August / 2014, 17:57:45

For an updated build, you should copy the files in the "small" download package on the autobuild site. This is DISKBOOT.BIN, PS.FI2 and the stuff in CHDK/MODULES

PS.FI2 is only used for manual loading with firm update, but it can be useful to have on the card.

For an initial install, you need everything in the large download. This includes some script libraries and other files.

If you need specific CHDK settings, you could also copy the .cfg files between cameras. This should be totally fine if they are all the same model. If you copy between different models, some settings will be reset. Alternately, you could use set_config_value with multicam.

ok , simple enough. thanks for the info.

So for updating ALL the cameras at once we need some multi-upload function to multicam (no schedule i know.. :) ) and i assume overwriting existing files is by default on ? because i don't see any references on the upload/mupload help description.
How overwriting is handled?
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