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considerations for SX260 external power supply for time lapse situations

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Offline udo

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Re: considerations for SX260 external power supply for time lapse situations
« Reply #10 on: 07 / August / 2015, 07:44:56 »
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So you want to open the powerbank and use directly the 3.7V from the cells?
Exactly. No electronics required to drop or increase the voltage.
The camera can monitor the voltage as it drops.

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But you want to charge them with the 5V or? I thought about the same. Could you make some photos how you do this and post them?
Sure, that would be no problem.
The pics that I linked show the innards of the Xiaomi powerbank.
The Li-Ion cells are in parallel.
The battery contacts are visible in some of the pics.
Solder two wires there; the wires end in a JST contra plug.
The plug is glued to the PCB and/or the front plate of the power bank. (at the lower right hand corner of the PCB in the pic)
The aluminum side of the power bank case then needs to be treated with a saw or drill or file to open up a small niche to make the JST contra plug reachable from the outside.
« Last Edit: 07 / August / 2015, 07:47:22 by udo »

Re: considerations for SX260 external power supply for time lapse situations
« Reply #11 on: 07 / August / 2015, 10:13:44 »
Ok, now I understand. Unfortunately the description is not in English :(

It looks like that the power bank includes 18650 Cells which I also use (Battery pack for bicycle lights). This cell have electronic inside with they protect for over charge and under load.

This is a picture from my different power supplies.

Re: considerations for SX260 external power supply for time lapse situations
« Reply #12 on: 07 / August / 2015, 11:08:14 »

Unfortunately the description is not in English
The automatic translation feature in the Google Chrome browser is quite nice for that sort of thing!
Ported :   A1200    SD940   G10    Powershot N    G16

Re: considerations for SX260 external power supply for time lapse situations
« Reply #13 on: 07 / August / 2015, 11:34:53 »
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The automatic translation feature in the Google Chrome browser is quite nice for that sort of thing!

Many thanks. The translator is really good . I do not know why I did not use it earlier . Maybe I did not quite dare google  :)


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Offline udo

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Re: considerations for SX260 external power supply for time lapse situations
« Reply #14 on: 09 / August / 2015, 06:25:50 »
For daytime timelapse operations I found the TLapse1 lua script.

I'll update when the parts get here.

PS: FWIW: I guess the USB power outlet of the powerbank can be used as a power source to trigger the camera...
« Last Edit: 10 / August / 2015, 02:47:51 by udo »

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Offline udo

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Re: considerations for SX260 external power supply for time lapse situations
« Reply #15 on: 14 / August / 2015, 03:26:47 »
Small update...

I received the Xiaomi 10400mAh powerbank and the 'Netz-Ladegerät kompatibel zu Canon ACK-DC40 inkl. Batterie-Adapter für NB-6L'.
In the boxes we find the parts.
The DC40 fits in the sx260, has polarity indications on the battery contacts.
The ACK provides power.
The Xiaomi powerbank feels 'heavy' and shows half charge.

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Offline udo

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Re: considerations for SX260 external power supply for time lapse situations
« Reply #16 on: 25 / August / 2015, 11:12:43 »
For daytime timelapse operations I also found the rawopint script which tries to minimize aperture flickering in timelapse photos intended for movies.

For the external power supply I made a small cut-out in the side of the casing of the Xiaomi powerbank, near the front panel.
I soldered two wires to the terminals of the battery cells in the power bank; these wires end in the JST plug (female plug but male contacts) that I glued to the PCB near the 'power' switch.
After sliding the electronics and the batteries of the powerbank back in the aluminium casing I can reach this plug with it's JST counterpart.
The counterpart JST plug is attached to the cable that I cut off the ACK-DC40 after verifying the polarity.

When I connect the Xiaomi to the SX260HS using the cable and fake battery I can power the SX260hs from the powerbank at 'normal' voltages for the camera. Filled up a 16GB card while timelapsing to test the powerbank in this setting.

Pictures show the fake battery with the cable from the ACK-DC40, now terminated with JST plug.
The other picture shows the side of the Xaomi powerbank where I cut a niche in the casing, revealing the JST plug glued to the PCB.

« Last Edit: 27 / August / 2015, 10:08:47 by udo »

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Offline reyalp

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Re: considerations for SX260 external power supply for time lapse situations
« Reply #17 on: 28 / August / 2015, 21:08:29 »
Timelapse script discussion split to http://chdk.setepontos.com/index.php?topic=12528.0
Don't forget what the H stands for.


Re: considerations for SX260 external power supply for time lapse situations
« Reply #18 on: 30 / August / 2015, 07:29:32 »
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When I connect the Xiaomi to the SX260HS using the cable and fake battery I can power the SX260hs from the powerbank at 'normal' voltages for the camera.
My G1x needs 7,4V. Would be interesting to know, if 2 of them in serial connection will work with G1x. Why not…

considerations for SX260 external power supply for time lapse situations
« Reply #19 on: 30 / August / 2015, 09:03:47 »
My G1x needs 7,4V. Would be interesting to know, if 2 of them in serial connection will work with G1x.
It should. However you need too be very sure to completely separate them before you attempt to recharge them. Not just disconnect them from the camera but from each other too! Failure to do so could result in a nasty surprise, some smoke, and maybe even a small explosion
« Last Edit: 30 / August / 2015, 09:48:37 by waterwingz »
Ported :   A1200    SD940   G10    Powershot N    G16

 

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