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Scripts I can use with my Arduino powered Camera Slider

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Offline sandysound

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Scripts I can use with my Arduino powered Camera Slider
« on: 06 / January / 2016, 10:24:49 »
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Hello everyone,

I have been playing with CHDK on my S100 for a year, using an adapted KAP UAV script from 3DR called "3DR EAI". Works great on my Arduino powered MiniEngine V1 designed by Airic Lensic.
But I think I could do with a script a little more specialised towards the Camera Slider rather than UAV.
I still want to keep the USB triggering control from the arduino (so it doesn't shoot while the platform is moving) but I could do with adding a Zoom feature (every shot zooms in a step - or every 5 shots is another step etc) or keeps zooming in every shot till max and then zoom out again etc etc.
Basically I want all the features of an Intervalometer/timelapse script without the Intervalometer part - I want the Arduino to handle the timing...
Is there a script out there that is suitable or geared towards this use?
Thanks for your help - this community is awesome and I really appreciate the work you guys and girls do - it enables people like me to explore photography in ways I could never have imagined!

Regards,

Sandy
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Offline c_joerg

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Re: Scripts I can use with my Arduino powered Camera Slider
« Reply #1 on: 06 / January / 2016, 12:17:50 »
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I still want to keep the USB triggering control from the arduino (so it doesn't shoot while the platform is moving)

I think also about a slider for time-lapse. But I want to go the way, that the script (rawopint) gives a signal (LED or USB) when the shoot is finished to move the slider…

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or keeps zooming in every shot till max and then zoom out again

The zoom steps are not really continuous, so you have to do a lot of postprocessing…
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Offline reyalp

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Re: Scripts I can use with my Arduino powered Camera Slider
« Reply #2 on: 06 / January / 2016, 13:38:14 »
Quote from: c_joerg on 06 / January / 2016, 12:17:50
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I still want to keep the USB triggering control from the arduino (so it doesn't shoot while the platform is moving)

I think also about a slider for time-lapse. But I want to go the way, that the script (rawopint) gives a signal (LED or USB) when the shoot is finished to move the slider…
FWIW, it would be straightforward to make rawopint blink an LED when the shot was finished, and relatively straightforward to make it wait for the USB signal instead of shooting on an interval.
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Offline waterwingz

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Scripts I can use with my Arduino powered Camera Slider
« Reply #3 on: 06 / January / 2016, 15:08:40 »
Quote from: c_joerg on 06 / January / 2016, 12:17:50
But I want to go the way, that the script (rawopint) gives a signal (LED or USB) when the shoot is finished to move the slider…
The most recent versions of kap_uav.lua have this feature built-in.
« Last Edit: 07 / January / 2016, 08:58:00 by waterwingz »
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Offline c_joerg

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Re: Scripts I can use with my Arduino powered Camera Slider
« Reply #4 on: 07 / January / 2016, 02:31:38 »
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The most recent versions of kap_uav.lua have this feature built-in

.. but not the other advantages for time-lapse like, smooth exposure change

http://youtu.be/dsEw2cKN9KQ


exposure control, over und underexposure control… ;)
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Offline waterwingz

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Re: Scripts I can use with my Arduino powered Camera Slider
« Reply #5 on: 07 / January / 2016, 09:52:25 »
Quote from: c_joerg on 07 / January / 2016, 02:31:38
.. but not the other advantages for time-lapse like, smooth exposure change
exposure control, over und underexposure control… ;)
I guess that depends on the application.  For kite & UAV work,  smooth exposure changes are not important or even useful. 

Having said that,  I plan to integrate some of reyalp's code into the script so that I can adjust exposure "on the fly" when shooting in continuous mode.
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Offline c_joerg

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Re: Scripts I can use with my Arduino powered Camera Slider
« Reply #6 on: 07 / January / 2016, 11:31:02 »
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I guess that depends on the application.  For kite & UAV work,  smooth exposure changes are not important or even useful.

I agree, but a slider is only something for time-lapse or?

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Having said that,  I plan to integrate some of reyalp's code into the script so that I can adjust exposure "on the fly" when shooting in continuous mode.

Great, I hope with over exposure control... ;)
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Offline sandysound

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Re: Scripts I can use with my Arduino powered Camera Slider
« Reply #7 on: 08 / January / 2016, 08:37:43 »
Hi Guys,
Thanks for the responses,
Attached is a video of my rig so you can see it in action :-)
https://youtu.be/3n8353o81es
Sorry - I couldn't figure out how to get the video to show in here.
As you can see I have been using the KAP UAV script because of the USB remote trigger function - I would be interested to try rawopint when it can do remote USB trigger!
Any other USB enabled scripts out there?
Cheers,
Sandy
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Offline waterwingz

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Re: Scripts I can use with my Arduino powered Camera Slider
« Reply #8 on: 08 / January / 2016, 11:12:22 »
Quote from: sandysound on 08 / January / 2016, 08:37:43
Any other USB enabled scripts out there?
After watching the video,  I just have to ask this question.  Do you realize that you don't even need a script to do everything you showed in that video?  The built-in USB remote functionality in CHDK will do exactly what you need with no script required.

link > CHDK USB Remote

As you are using an external microcontroller to coordinate things, you can even get fancy.

link > Remote Zoom

The advantage to using script like rawopt and kap_uav is that they handle setting exposure well for the applications they were designed for ( sunsets or moving vehicles respectively).   For your captive lighting situation, you don't really need all of that.
« Last Edit: 08 / January / 2016, 11:14:10 by waterwingz »
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Offline sandysound

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Re: Scripts I can use with my Arduino powered Camera Slider
« Reply #9 on: 08 / January / 2016, 12:11:37 »
Lol uh no - I did not realise that at all!
Gee I feel a little bit special now ha ha  :haha - I just got used to using the 3DR EAI version of KAP UAV with the Pixhawk... And figured I would need to use it on the slider!  :lol
Sigh... So... I guess I will RTFM for CHDK then  :-X
FYI I don't always take pictures of unlit candles - it was just to demonstrate what I was using  :)
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