Ultimate Intervalometer - a script for shooting over a long duration - v4.8 - page 53 - Completed and Working Scripts - CHDK Forum
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Ultimate Intervalometer - a script for shooting over a long duration - v4.8

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Offline Sdack

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Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #520 on: 25 / September / 2018, 23:35:00 »
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Hi WW
Thanks for your swift response..

Please be assured that my post wasn't intended to cast any doubts on your excellent script.

I seem to have a particular knack for breaking things..

Thanks for the debug suggestions.. I will try them out and report back.
sdack

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Offline Sdack

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Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #521 on: 26 / September / 2018, 02:30:59 »
Tests run and logs attached below.

I ran two cameras, one with your proposed BCKLight setting and the other set to LCD

The BKLight version used the start and stop time correctly, printing <no shot> at the 2 min interval time in between shooting times

The LCD version shot an image every 2 mins from the get go

I guess BKLight is the way to go, but I admit to not being quite sure what I'm looking at, or what the implications are.

I'm forever appreciative for your help in this!
Sdack

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Offline Mlapse

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Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #522 on: 26 / September / 2018, 04:22:49 »
I had similar problems with the a480 and a490.
bklite is the most reliable setting for longer duration project where the display can/must be turned off between shots.
frustration is a key ingredient in progress

Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #523 on: 26 / September / 2018, 18:20:27 »
I had similar problems with the a480 and a490.
bklite is the most reliable setting for longer duration project where the display can/must be turned off between shots.
While the bkite setting is reliable, it uses quite a bit more power than LCD.

Tests run and logs attached below.
Thanks for posting that - there are a couple of things I see there that I want to check out.  The LCD log doesn't make any sense so I need to figure out what is happening there.

Looking at the log,  it appears that you sometime have the script "autostarting"? Is that something you purposely selected in the CHDK Script shooting menu?

Ported :   A1200    SD940   G10    Powershot N    G16


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Offline Sdack

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Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #524 on: 26 / September / 2018, 18:37:04 »
Hiya
Thanks for being there WW.

Yes I use autostart with camera scripts because, when I have the camera in an enclosure and can't see the rear screen, I can just press the power on button and be sure the script will run.

Should I not do that.. at least for the sake of testing?

I ran a camera overnight with bklight settings and it drew 2.5 Watt hours, not taking pictures.  My current USB battery pack has 15 Watt hours capacity, which won't be many days.  Do you think I would be better packing a Raspberry Pi or an Arduino in the enclosure too?  We were getting 0.2 W/h draw with that.

S

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Offline Sdack

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Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #525 on: 27 / September / 2018, 00:11:31 »
Ok, here's an update,

Attached below is the log from a BKLight settings session that I started yesterday evening (with autostart).

Unfortunately the camera is using a lot of juice - 3.6 W/h over 17 hours, most of which was overnight with no image shooting.

The log looks promising but the pictures have an issue.  The first 10 images, starting at 9am on a 30 min interval are completely black.  The log reflects this - see ths snippet below showing capture from 1:30pm (Black frame) and 2:00pm (normal exposure)

Code: [Select]
Day 28 Thu Sep 27 13:30:14 2018 IMG_1906.JPG tv: 1/8 f: 3.2 ISO: 800 bv: -825  V: 4.436 T: 16
Day 28 Thu Sep 27 14:00:13 2018 IMG_1907.JPG tv: 1/8 f: 3.2 ISO: 800 bv: -128  V: 4.436 T: 17



I started wondering if the camera itself was at fault but I checked the  shutter count and it's pretty low at 2,900

I hope this helps with the diagnosis.  I will stop using Autostart now.

Sdack

Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #526 on: 27 / September / 2018, 12:37:20 »
Yes I use autostart with camera scripts because, when I have the camera in an enclosure and can't see the rear screen, I can just press the power on button and be sure the script will run.
Okay - that makes sense now.  The script also uses autostart as part of its periodic camera reset function to make the script restart after each hard restart is initiated.

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Should I not do that.. at least for the sake of testing?
It should be okay - it just makes the logs look funny because the script starts up differently when autostarted.  I'll spend a couple of minutes to make sure that is not causing other issues.

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I ran a camera overnight with bklight settings and it drew 2.5 Watt hours, not taking pictures. 
I'll post a little test script you can try that will let you compare backlight only, with LCD off - in both shooting and standby modes.  I would be really curious to know the different draws.

And I'll see if I can figure out why the LCD off mode is not working for you.  I have a test script for LCD off that we have used, It's also time to check the porting thread for your camera - I'm getting a sense of deja vu.

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Do you think I would be better packing a Raspberry Pi or an Arduino in the enclosure too?  We were getting 0.2 W/h draw with that.
Are you thinking about actually turning the camera off during night hours with an Arduino  that runs in a very low power mode?  That's probably the best approach regardless of how CHDK tried to conserve camera power. There is another thread on this forum doing just that if you are interested.

Not sure you'll get the same savings with a Pi unless you have a way to sleep it in a low power mode and just wake up occassionally.

Ported :   A1200    SD940   G10    Powershot N    G16

Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #527 on: 27 / September / 2018, 12:46:42 »
The log looks promising but the pictures have an issue.  The first 10 images, starting at 9am on a 30 min interval are completely black.  The log reflects this - see ths snippet below showing capture from 1:30pm (Black frame) and 2:00pm (normal exposure)
Code: [Select]
Day 28 Thu Sep 27 13:30:14 2018 IMG_1906.JPG tv: 1/8 f: 3.2 ISO: 800 bv: -825  V: 4.436 T: 16
Day 28 Thu Sep 27 14:00:13 2018 IMG_1907.JPG tv: 1/8 f: 3.2 ISO: 800 bv: -128  V: 4.436 T: 17
This is bizarre. 

First of all, the script does not set exposure in any way (unless you try to use the HDR mode). It tells the camera to shoot using whatever settings the Canon firmware wants to use based on its shooting mode settings.

In your log entry, both photos are shown being taken at 1/8 second, f3.2 and ISO800.  Even though scene illumination (brightness) changes by a factor of more than six. Do you have the camera set in P or A mode?

Also, I would have expected an very underexposed image at those setting, but not completely black.

Edit :   I'm guessing that when faced with a low light scene, the camera just clamps the exposure at 1/8 second, f3.2 and ISO800 until the scene illumination increases enough that it needs a faster shutter speed, smaller aperture , or lower ISO setting.  So what you are seeing is normal?
« Last Edit: 27 / September / 2018, 16:53:56 by waterwingz »
Ported :   A1200    SD940   G10    Powershot N    G16


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Offline reyalp

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Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #528 on: 28 / September / 2018, 22:54:50 »
I split the discussing that isn't directly about ultimate to https://chdk.setepontos.com/index.php?topic=13552.0
Don't forget what the H stands for.

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Offline Mlapse

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Re: Ultimate Intervalometer - a script for shooting over a long duration - v4.8
« Reply #529 on: 25 / November / 2018, 07:55:41 »
Hi Waterwings,
was looking at my logs today and thought this might be informative for you since we talked about a maximum exposure value setting a while back.
i hope that it could reduce how much detail is lost in the dark....at bv -400 it's dark enough for my taste.
hereby part of the log, looking at the pictures i like the transition from day to night and vice versa.

Code: [Select]
Day 1 Sun Mar 25 19:13:33 2018 IMG_0271.JPG tv: 1/10 f: 3.1 ISO: 400 bv: 13  V: 4.088 T: 35
Day 1 Sun Mar 25 19:14:03 2018 IMG_0272.JPG tv: 1/8 f: 3.1 ISO: 400 bv: 2  V: 4.092 T: 35
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Day 1 Sun Mar 25 19:16:33 2018 IMG_0277.JPG tv: 1/8 f: 3.1 ISO: 400 bv: -50  V: 4.088 T: 35
Day 1 Sun Mar 25 19:17:03 2018 IMG_0278.JPG tv: 1/6 f: 3.1 ISO: 400 bv: -62  V: 4.088 T: 35
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Day 1 Sun Mar 25 19:29:34 2018 IMG_0303.JPG tv: 0.8 f: 3.1 ISO: 400 bv: -356  V: 4.088 T: 35
Day 1 Sun Mar 25 19:30:04 2018 IMG_0304.JPG tv: 1.0 f: 3.1 ISO: 400 bv: -368  V: 4.088 T: 35
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Day 1 Sun Mar 25 21:29:04 2018 IMG_0542.JPG tv: 1.0 f: 3.1 ISO: 400 bv: -697  V: 4.088 T: 34
Day 1 Sun Mar 25 21:29:34 2018 IMG_0543.JPG tv: 1.0 f: 3.1 ISO: 400 bv: -708  V: 4.092 T: 34
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Day 2 Mon Mar 26 05:57:35 2018 IMG_0116.JPG tv: 1.0 f: 3.1 ISO: 400 bv: -368  V: 4.092 T: 33
Day 2 Mon Mar 26 05:58:05 2018 IMG_0117.JPG tv: 0.8 f: 3.1 ISO: 400 bv: -357  V: 4.092 T: 33
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Day 2 Mon Mar 26 06:13:34 2018 IMG_0148.JPG tv: 1/8 f: 3.1 ISO: 400 bv: -13  V: 4.092 T: 33
Day 2 Mon Mar 26 06:14:04 2018 IMG_0149.JPG tv: 1/8 f: 3.1 ISO: 400 bv: 0  V: 4.092 T: 33 
« Last Edit: 25 / November / 2018, 09:07:40 by Mlapse »
frustration is a key ingredient in progress

 

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