turning on Camera rite from power source - General Discussion and Assistance - CHDK Forum
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turning on Camera rite from power source

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Offline binngo

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turning on Camera rite from power source
« on: 30 / December / 2013, 08:56:30 »
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i have  a project in mind i would control my camera using  arduino  its kinda motion detection thing but i need to save battery and motion detector would be controlled by arduino in order to save power and to reduce load on camera i want arduino to control power source 

so camera should get booted as it will get power rather then need to be powered on by pressing play or power button

flow would be like this motion sensor detects motion arduino turn on camera power take picture then camera turn off 



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Offline andrew.stephens.754365

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Re: turning on Camera rite from power source
« Reply #1 on: 30 / December / 2013, 10:41:51 »
Only thing i remember reading about this was http://antthomas.co.uk/webcam/guide.php
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Offline waterwingz

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Re: turning on Camera rite from power source
« Reply #2 on: 30 / December / 2013, 10:49:08 »
You are almost certainly going to need to modify the camera hardware to make this work.  You essentially need to wire a relay contact (or some transistor circuit) across the power switch contacts and drive that from your Arduino.

There is a good thread about that here :  http://chdk.setepontos.com/index.php?topic=9849

This post shows a particularly elegant solution : http://chdk.setepontos.com/index.php?topic=9849.msg100657#msg100657

Once you have that working,  you can configure CHDK to run a script automatically at startup.  Obviously, that script can simply a take one or more pictures for you and then shut the camera down.
« Last Edit: 30 / December / 2013, 10:53:12 by waterwingz »
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Ported :   A1200    SD940   G10    Powershot N    G16
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Offline ahull

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Re: turning on Camera rite from power source
« Reply #3 on: 30 / December / 2013, 10:52:41 »
For *most* Canon P&S cameras, if you run them off an external power source (in the case of Ixus/Powershot models this may require a dummy battery), then if the power button is held down permanently (with tape or whatever) the camera will come on, when the power source comes on.

You would be advised of course, to check this is the case with whichever model you plan to use.
(http://chdk.setepontos.com/index.php?topic=9849.msg101029#msg101029)
« Last Edit: 30 / December / 2013, 10:54:45 by ahull »
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Offline andrew.stephens.754365

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Re: turning on Camera rite from power source
« Reply #4 on: 30 / December / 2013, 12:55:48 »
Quote from: ahull on 30 / December / 2013, 10:52:41
For *most* Canon P&S cameras, if you run them off an external power source (in the case of Ixus/Powershot models this may require a dummy battery), then if the power button is held down permanently (with tape or whatever) the camera will come on, when the power source comes on.

Another challenge sorted here - works on my SX150IS. Thanks.

Just need to find a box of small [cheap] G clamps somewhere !
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Offline ahull

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Re: turning on Camera rite from power source
« Reply #5 on: 30 / December / 2013, 14:41:42 »
Quote from: andrew.stephens.754365 on 30 / December / 2013, 12:55:48
Quote from: ahull on 30 / December / 2013, 10:52:41
For *most* Canon P&S cameras, if you run them off an external power source (in the case of Ixus/Powershot models this may require a dummy battery), then if the power button is held down permanently (with tape or whatever) the camera will come on, when the power source comes on.

Another challenge sorted here - works on my SX150IS. Thanks.

Just need to find a box of small [cheap] G clamps somewhere !

Surely any engineer knows this is a job for a paper clip  ;)
(Prize will be awarded for the best design and most imaginative use of the paper clip)
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Offline JvdP

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Re: turning on Camera rite from power source
« Reply #6 on: 30 / December / 2013, 15:08:31 »
Quote from: ahull on 30 / December / 2013, 10:52:41
For *most* Canon P&S cameras, if you run them off an external power source (in the case of Ixus/Powershot models this may require a dummy battery), then if the power button is held down permanently (with tape or whatever) the camera will come on, when the power source comes on.

You would be advised of course, to check this is the case with whichever model you plan to use.
(http://chdk.setepontos.com/index.php?topic=9849.msg101029#msg101029)
Great tip. Confirmed to work on my Ixus 240 HS
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Offline andrew.stephens.754365

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Re: turning on Camera rite from power source
« Reply #7 on: 30 / December / 2013, 15:13:14 »
Quote from: ahull on 30 / December / 2013, 14:41:42
Surely any engineer knows this is a job for a paper clip  ;)
(Prize will be awarded for the best design and most imaginative use of the paper clip)

Ah yes - since my cams might be tight friction fit in 1/4 in ply cylindrical biscuit tin shape dark-room I should be able to do something with a dab of pva and the wrong end of a peg  :D [but a real engineer should improve on]

Thanks again for the tip.
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