[Power] Power Digest, Vol 12, Issue 1

[George Hunt]

Hi  Richard,

When I first saw this post, I couldn't think of an application that I might
be directly involved in.  Since then I've learned that OLPC-au is actively
looking at XO-ARM as a school server.  Up until now, I've been thinking
that XS's need 100 watt panels. But I just measured
XS-ARM at 4 watts.  With an extra 2 watts for a USB 3G modem, a 30 watt
panel, and a 50 amp-hr deep cycle battery seem feasible.

I've been playing with an Arduino as a battery monitor, and looking into
desulfator circuits. If you can send two, I'll set up a parallel test
between an AGM (higher priced) and a flooded lead-acid (with the
desulfator).

My mailing address is:

135 Corson Ave
Staten Island, NY 10301

George

On Wed, Jun 27, 2012 at 8:34 PM, <power-request at lists.laptop.org> wrote:

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> Today's Topics:
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>    1. Samples of new Solar panel avalable (Richard Smith)
>    2. Re: Samples of new Solar panel avalable (Mike Lee)
>    3. Re: Samples of new Solar panel avalable (Richard A. Smith)
>    4. Re: Samples of new Solar panel avalable (Mike Lee)
>    5. Re: Samples of new Solar panel avalable (Richard Smith)
>    6. Re: Samples of new Solar panel avalable (Sameer Verma)
>    7. Re: Samples of new Solar panel avalable (Rabi Karmacharya)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 27 Jun 2012 13:40:03 -0400
> From: Richard Smith <richard at laptop.org>
> To: Discussions on XO laptop power <power at lists.laptop.org>
> Subject: [Power] Samples of new Solar panel avalable
> Message-ID:
>         <
> CA+vq8reZ-EV2QX21pyQye9DX4mFc9456XKuZbhhTaQtDWuk0HA at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> I have some samples of a new solar panel for the XO.  Its meant to be
> a 2nd source for the existing solar panel. I'd like to offer these
> samples her to people on the power list first.
>
> I need to test how robust these new panels will be in the field so if
> you request one then I need you to use it as much as you can.  I need
> you to try and carry it with you and see how it fairs with normal wear
> and tear.  These panels fold in half and have a canvas cover.  I'll
> put up a picture and send on a link.
>
> I don't want you to intentionally try to break it but don't be gentle
> with it by any means.
>
> If you are interested then please send me your shipping address and
> your expected use pattern.
>
> There are, however,  a few issues with these samples.  The output
> cable on these panels is very short, almost too short. This will be
> corrected on the production unit.  Also there was some adhesive
> leakage around the PV material this makes the panel look a bit ugly
> but its still functional.
>
> --
> Richard A. Smith
> One Laptop per Child
>
>
>
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