[Soekris] net4526 & a speaker

[Antoine Zen-Ruffinen]

You want to produce CD quality music or just a buzz ? If you want just
make a buzz, you can use a simple oscillator + amplifier
enabled/disabled by a GPIO of the net4526.

2007/11/13, Jeff Ramin <ramin at berbee.com>:
>
> This board would go into a product that we sell, and we
> tell customers they need to use 802.3af switches.
>
> So, the ALIX board would not work in this scenario. It
> would require a POE splitter at the board.
>
>
> Manuel Requena wrote:
> > And you know what switching device will provide the PoE connection? And the maximum power it will
> > provide?
> >
> > As I know, Cisco switches have modules that provides 7W and 15W.
> >
> > http://en.wikipedia.org/wiki/Power_over_Ethernet
> > "Clause 33 of IEEE 802.3-2005 (commonly referred to as IEEE 802.3af) provides 48 volts DC over two
> > of the four available pairs on a Cat. 3/Cat. 5 cable with a maximum current of 400 mA for a maximum
> > load power of 15.4 W."
> >
> >
> >> -----Mensaje original-----
> >> De: soekris-tech-bounces at lists.soekris.com
> >> [mailto:soekris-tech-bounces at lists.soekris.com]En nombre de Jeff Ramin
> >> Enviado el: lunes, 12 de noviembre de 2007 22:21
> >> Para: Paul Bartell
> >> CC: soekris-tech at lists.soekris.com
> >> Asunto: Re: [Soekris] net4526 & a speaker
> >>
> >>
> >> I was actually looking at the ALIX products, but they don't
> >> have any POE boards, which is a requirement for my project.
> >>
> >> Thanks.
> >>
> >>
> >> Paul Bartell wrote:
> >>> I think the easiest to find would be a usb sound card, but in all
> >>> seriousness, why a net4526.  I think a mini-itx board would make a lot
> >>> more sence. not to mention, probably cheaper. specifically pcengines
> >>> ALIX would make more sence, as it has pretty much the same if not better
> >>> specs and an intergrated sound card.
> >>>
> >>> On Nov 12, 2007 11:17 AM, Jeff Ramin <ramin at berbee.com
> >>> <mailto:ramin at berbee.com>> wrote:
> >>>
> >>>
> >>>     Hi folks.
> >>>
> >>>     One of the things I need to do with the net4526 is drive an
> >>>     8 ohm speaker. I actually need about 12 watts of power, but
> >>>     I realize I won't be able to get that much from this board.
> >>>     For testing purposes, I'm willing to work with less power.
> >>>
> >>>     Anyway - does anybody have a suggestion as to which interface
> >>>     I should use? I think my choices are getting a mini-PCI sound
> >>>     card, or using the USB interface. What are the pros and cons?
> >>>
> >>>     Is anybody else using one of these cards for an audio application?
> >>>
> >>>     Thanks.
> >>>
> >>>
> >>>     --
> >>>     Jeffrey Ramin
> >>>     CDW Berbee
> >>>     ramin at berbee.com <mailto:ramin at berbee.com>
> >>>     608.298.1024
> >>>     _______________________________________________
> >>>     Soekris-tech mailing list
> >>>     Soekris-tech at lists.soekris.com <mailto:Soekris-tech at lists.soekris.com>
> >>>     http://lists.soekris.com/mailman/listinfo/soekris-tech
> >>>
> >>>
> >>>
> >>>
> >>> --
> >>> "If you are savvy and smart about the choices you make in life, The sky
> >>> is not the limit!"
> >>> Mark Shuttleworth
> >>>
> >>> Random quote of the week/month/whenever i get to updating it: "This is
> >>> an incline plane. You roll stuff down it." Or is it one of those
> >>> "incline planes have been used throughout the millenia, from the
> >>> Egyptian pyramids to this stupid science class" videos?"
> >>> - Jasmine Lee
> >> --
> >> Jeffrey Ramin
> >> CDW Berbee
> >> ramin at berbee.com
> >> 608.298.1024
> >> _______________________________________________
> >> Soekris-tech mailing list
> >> Soekris-tech at lists.soekris.com
> >> http://lists.soekris.com/mailman/listinfo/soekris-tech
> >>
>
> --
> Jeffrey Ramin
> CDW Berbee
> ramin at berbee.com
> 608.298.1024
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