[TriEmbed] Camera Advice

Ted Pudlik tpudlik at gmail.com
Fri May 2 10:06:37 CDT 2014


Inductive power couplers look like an interesting solution---I'm pretty
sure the Adafruit one would not transmit enough power over the thickness of
a window pane, but I'll look into other options.  Thank you for the
suggestion!


On Thu, May 1, 2014 at 2:30 PM, Glen Smith <mrglenasmith at gmail.com> wrote:

> Adafruit sells matched components for both a 3.3v and 5v @ 500ma charger.
> Actual current is dependent on distance between the coils and drops to 10ma
> at 1/2 inch. You can build your own if you want to, but this is an option.
>
> https://www.adafruit.com/search?q=inductive+charger
>
> Glen
>
>
> On Thu, May 1, 2014 at 2:19 PM, Scott Hall <scottghall1 at gmail.com> wrote:
>
>>  Two points:
>>
>> 1) You don't have to drill a hole to couple power through the window,
>> using an inductive power coupler (essentially a specially made transformer
>> you wind yourself).  I read an article a couple of months back in Elektor
>> Magazine on how to do it (though the author was making his own spinning
>> object that he needed to couple power to).  There were pointers to how to
>> calculate the size of core, wire size, number of turns, and the dielectric
>> attributes of several materials.
>>
>>     I also have done work for companies in the "smart energy" realm, and
>> have some circuits on how to parasitically capture up to 150mA of waste
>> energy from power lines (legally), again through inductive means and using
>> a buck circuit.
>>
>> 2) You might consider proofing your project using a Pi, but use a
>> different BOM (board on module) for the same chip and specs that will run
>> the same embedded OS distro, but give you a hibernate and sleep modes that
>> will save various levels of power and solve the Pi's power consumption
>> problems and some other design idiosyncrasies.  You can still do it all for
>> under $100.
>>
>> On 04/30/2014 06:29 PM, Ted Pudlik wrote:
>>
>> Thank you all for your suggestions!  A lot of options to look into.
>>
>>  I should clarify that although the camera is currently indoors, I would
>> eventually like to move it outside the window, as Paul suggested.  This
>> would both give me a better perspective on the feeder and remove the pane
>> from between the camera and its subject.  But it is also why power
>> consumption is a concern: short of drilling a hole in the wall or window, I
>> can't get a cord out there.
>>
>>  Rodney, what solar panel do you use?  My impression was that even a 45
>> W panel will not be enough<http://www.raspberrypi.org/forums/viewtopic.php?f=41&t=31859> most
>> of the year.  (If I could keep the Pi, the RPi camera is a natural choice;
>> the sensor seems to be of high quality, and I could always try to
>> custom-mount a better lens one way<http://www.instructables.com/id/The-SnapPiCam-A-Raspberry-Pi-Camera/>or
>> another<http://www.ebay.com/itm/Raspberry-Pi-Camera-Board-w-CS-mount-Lens-fully-compatible-with-official-module-/281212355128>
>> .)
>>
>>  Best wishes,
>> Ted
>>
>>
>> --
>> Scott G. Hall
>> Raleigh, NC, USAScottGHall1 at GMail.Com
>>
>>
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>>
>
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