DWL-900AP+ External Mounting Environmentals ;-((

[Lyle Williams]

Finally, I came to the same conclusion.  My short run of Cat5 ended up being
flakey for 5v power.  I put a power supply in the box with the AP, and ran
12volts to it.  With the inefficiencies in the power supply, there was now
too much heat in the box, and too much current over the Cat5.  After a night
musing over the options, I decided that although power over Cat5 was pretty
sexy, ultimately it wasn't what I was trying to achieve.

My external AP box is now fed 5v by a couple of huge (well, 1.8 sq mm)
conductors.

Lyle Williams
VK1XLW




----- Original Message -----
From: "Brenton Hooper" <razer82 at ozemail.com.au>
To: <wireless at lists.samba.org>
Sent: Sunday, December 29, 2002 7:08 PM
Subject: Re: DWL-900AP+ External Mounting Environmentals ;-((


> With the whole voltage drop over distance on cat5, why not just run some
> 2mill twin/figure 8?  This stuff is cheap as chips (got any sparky mates?
> He'll probably give ya some for free), and all that extra copper should
give
> you a lot more range before having to worry about voltage drop problems.
>
>
>
> Thx,
> Brenton
>
> ----- Original Message -----
> From: "Tim Kerby" <tkerby at tkerby.f9.co.uk>
> To: <wireless at lists.samba.org>
> Sent: Sunday, December 29, 2002 12:08 PM
> Subject: Re: DWL-900AP+ External Mounting Environmentals ;-((
>
>
> > Hmmm, if i remember correctly, the 1 wire net has support for digital
> > switches so you could do that and temperature monitoring, and perhaps
even
> > console access with a micro up there interpreting data.  A humidity
sensor
> > inside the case may be useful in some enviroments too
> >
> > Tim
> >
> > ----- Original Message -----
> > From: "Lyle Williams" <lyle.williams at bigpond.com>
> > To: <wireless at lists.samba.org>
> > Sent: Saturday, December 28, 2002 8:43 PM
> > Subject: Re: DWL-900AP+ External Mounting Environmentals ;-((
> >
> >
> > >
> > > Another (rather simple) option for an extra pair of wires is the reset
> > > button.  If the 900AP+ is mounted up a mast, it could be nice to be
able
> > to
> > > trip the "return to factory config" button without going up the mast.
> > >
> > > Lyle Williams
> > > VK1XLW
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: "Tim Kerby" <tkerby at tkerby.f9.co.uk>
> > > To: <wireless at lists.samba.org>
> > > Sent: Sunday, December 29, 2002 2:32 AM
> > > Subject: Re: DWL-900AP+ External Mounting Environmentals ;-((
> > >
> > >
> > > > Just had a thought, two pairs are used for network traffic, one pair
> (or
> > > > sometimes two) for power.  If there is only power on one set of
pairs,
> > the
> > > > other two pairs could be used for a 1 wire network and a number of
> > > ibuttons
> > > > or other temperature sensors.  Have a look at ibutton.com for some
> more
> > > > details.
> > > >
> > > > Tim
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Lyle Williams" <lyle.williams at bigpond.com>
> > > > To: "Grahame Kelly" <grahame at wildpossum.com>; "Wireless List"
> > > > <wireless at lists.samba.org>
> > > > Sent: Friday, December 27, 2002 4:19 AM
> > > > Subject: Re: DWL-900AP+ External Mounting Environmentals ;-((
> > > >
> > > >
> > > > >
> > > > > Grahame,
> > > > >
> > > > > Thanks for feedback on your experiences. (Un)fortunately it's
> raining
> > > here
> > > > > right now, so everything is working perfectly.  I'll jamb a
> > thermocouple
> > > > > into the box when we get a sunny day - that should give me an idea
> of
> > > > in-box
> > > > > temps.  The original 900AP+ box is gone, I am just using the
> internal
> > > > board
> > > > > in a commercial electrical enclosure.  Hopefully I won't have to
fit
> > > > > airconditioning!   :^)
> > > > >
> > > > > I'll send my experiences to the list.
> > > > >
> > > > > On the subject of laser cutting, I don't think that level of
> precision
> > > is
> > > > > needed, especially if you don't care where your secondary lobes
are
> in
> > > the
> > > > > vertical plane.  I'm just using a router to cut slots.  Things
seem
> to
> > > > work
> > > > > (so far...)
> > > > >
> > > > >
> > > > > Lyle Williams
> > > > > VK1XLW
> > > > > 27DEC02
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Grahame Kelly" <grahame at wildpossum.com>
> > > > > To: "Wireless List" <wireless at lists.samba.org>
> > > > > Sent: Friday, December 27, 2002 1:30 PM
> > > > > Subject: DWL-900AP+ External Mounting Environmentals ;-((
> > > > >
> > > > >
> > > > > Hi everyone.
> > > > >
> > > > > I am new to the list but have been lurking for sometime.
> > > > >
> > > > > Last week I mounted my DWL-900AP+ systems in vented containers
with
> an
> > > > > additional metal skin to deflect as much heat away as possible. I
> had
> > > some
> > > > > experience in going the same environmental casing for a 24/7
> operating
> > > IR
> > > > > Camera / Controller system for my wildpossumCAM (Linux of course).
> > > > >
> > > > > Initial tests worked well - until the sun came over the house(s)
and
> > > while
> > > > > not
> > > > > directly in sunlight, the tempature raised to 32C internally
caused
> > the
> > > > > units
> > > > > to both fail within 2 mins. According the DLINK spec they are
> suppose
> > to
> > > > > tolerate operations -10C to +55C: Well this is totally untrue
> > according
> > > to
> > > > > my
> > > > > experience - I hope your more successfull. My measurements show
the
> > > units
> > > > go
> > > > > off or intermittent at +30C external - allowing for a 5C to 10C
> > internal
> > > > > onboard difference its operating temp is only 35C to 40C MAX. This
> was
> > > > > tested
> > > > > on four units. All showed the same effect.
> > > > >
> > > > > Interestingly usually the AP's lose ethernet connectivity first,
> then
> > > > > sometime
> > > > > later RF conectivity. Bummer! Bummer!
> > > > >
> > > > > So, now I am building a "Peiter Unit with integrated AVR uP +
> > tempature
> > > > > sensing" for the beasts; hopefully this will give total year long
> > > > > operations.
> > > > >
> > > > > Love the slotted antenna buy the way Lyne. May build a couple
myself
> > but
> > > I
> > > > > don't have access to laser cutting company, pity they couldn't do
a
> > > couple
> > > > > of
> > > > > runs for others too.
> > > > >
> > > > > Cheers.
> > > > > Grahame
> > > > > ex. VK2ZGK  Glenhaven; Sydney.
> > > > > grahame (at) wildpossum (dot) com
> > > > >
> > > > >
> > > >
> > >
> > >
> >
>