Hi Folks,
I've been trying to learn about options for enabling conference presenters
to wirelessly hook into projectors and do various types of presentations,
including, but not limited to, PowerPoint slides and browser-based webinars.
I live in a fairly small community and there are no local experts on this
topic. I have been working with my usual vendor to try to understand how
this works but they aren't fully versed in this technology and I haven't
been able to get a definitive grasp on the issues.
If anyone here has experience with this stuff, your help would be very much
appreciated. Here's what I want to do:
1. We're converting a large space to a hotel-style conference center. It
will have movable walls to enable up to 5 different room configurations. I
want one projector for each of the three small rooms, one projector in a
different orientation for the full room, and the ability to gang two or
more projectors together to handle once source as needed.
2. I want to share my network's internet connection to any presenter,
whether they use my laptops OR bring their own.
3. I do NOT want to be dependent on supplying my own laptops because I
don't want to be in the position of guaranteeing that I will have every
possible version of PowerPoint available to presenters who bring in their
own slides. Naturally, this also means that the system has to work without
requiring any special connectivity software on a laptop beyond the standard
wireless driver.
4. These projectors will need to be ceiling mounted, so plugging a USB
stick into them is not practical. I have heard of projectors with remotes
into which you can plug in a USB stick and execute a PowerPoint
presentation without a laptop. I would like to enable this functionality if
possible **in the context of my other requirements**.
5. My best understanding of how this stuff has to work is that the
projectors have to be installed as network devices (like printers), and
there has to be a specialized WAP to connect laptops to projectors. It is
unclear to me whether I need one WAP per projector or there can be a
centralized "routing" (for lack of a better term) system for this. (I
cannot, as I understand it, install anything that the network would
recognize as a router because it would conflict with the existing domain
router and hose the network.) Naturally, laptops should not be forced to
join my network domain to be able to connect to a projector that is on the
network.
6. Somehow the wireless connection between laptop and projector has to both
share my network's internet connection with the laptop, and enable
communication with the projector. How can this be done?
I have visited websites for various equipment vendors but I have yet to
find a simple explanation of how the technology works and what is required
to meet my specific needs. I do not want to subject myself to sales pitches
for particular pieces of equipment, I want to understand how this
technology works in general and what my options are.
Please, educate me. How do I accomplish what I want, or is it even possible?
Thanks.
Ken Dibble
www.stic-cil.org
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I would google "wireless projector" first. :)
On Thu, Nov 13, 2014 at 11:20 PM, Ken Dibble <krdibble@stny.rr.com> wrote:
> Hi Folks,
> I live in a fairly small community and there are no local experts on this
> topic. I have been working with my usual vendor to try to understand how
> this works but they aren't fully versed in this technology and I haven't
> been able to get a definitive grasp on the issues.
>
> If anyone here has experience with this stuff, your help would be very much
> appreciated. Here's what I want to do:
--
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/( _ )\ http://sites.google.com/site/changmw
^ ^ May the Force and farces be with you!
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Author: Michael Glassman
Posted: 2014-11-13 12:15:40 Link
Projector Networking: http://www.projectorpeople.com/resources/projector-networking.asp
How Epson Wireless Projectors Work: http://www.epson.com/cgi-bin/Store/Landing/wpBusHow.jsp
Mike
--------------------------------------------------------------------------------
From: Man-wai Chang
Sent: Thursday, November 13, 2014 11:07 AM
To: profoxtech@leafe.com
Subject: Re: [NF] Wireless Audio/Visual Presentations
I would google "wireless projector" first. :)
On Thu, Nov 13, 2014 at 11:20 PM, Ken Dibble <krdibble@stny.rr.com> wrote:
> Hi Folks,
> I live in a fairly small community and there are no local experts on this
> topic. I have been working with my usual vendor to try to understand how
> this works but they aren't fully versed in this technology and I haven't
> been able to get a definitive grasp on the issues.
>
> If anyone here has experience with this stuff, your help would be very much
> appreciated. Here's what I want to do:
--
.~. Might, Courage, Vision. SINCERITY!
/ v \ 64-bit Ubuntu 9.10 (Linux kernel 2.6.39.3)
/( _ )\ http://sites.google.com/site/changmw
^ ^ May the Force and farces be with you!
[excessive quoting removed by server]
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>Projector
>Networking: http://www.projectorpeople.com/resources/projector-networking.asp
>How Epson Wireless Projectors
>Work: http://www.epson.com/cgi-bin/Store/Landing/wpBusHow.jsp
>I would google "wireless projector" first. :)
Of course I did that.
Thank you both, but this kind of stuff is extremely basic and non-specific.
Yes, I know there is such a thing as networkable projectors, and such a
thing as wireless projectors. That is all the first website really says. It
doesn't explain how these things can address my needs. The Epson projectors
appear to require projector-specific software to be installed on a laptop
in order to use the wireless capability. That does seem to be the case for
some wireless projectors but not others.
Is there anyone on the list who has had experience setting up this kind of
stuff?
Thanks.
Ken Dibble
www.stic-cil.org
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Okay, let's try this from a different perspective:
Those of you who make presentations at computer programming conferences:
You bring your own laptops, don't you? How do you connect to wireless
projectors? Do you have to install the hotel's software on your laptops in
order to do so? And how does this work in large-room presentations where
multiple projectors hitting multiple screens are all displaying your
presentation.
Any information I can get on this would be helpful.
The stumbling block, for me, is this: If I connect by wire from a laptop to
a projector, I do it with a VGA cable. The existing video driver on the
laptop sees the projector as a second monitor. It gives me option to use
either the projector, the laptop. or both ("clone") as my monitors. I don't
have to install any special software or hook up the projector to the network.
Why is it so difficult to enable this same kind of connection wirelessly?
What I think I really need is wireless transceiver dongles that plug into
the laptop's and projector's VGA ports. Why should I be forced to go
through the rigmarole of a WAP and a "network device" metaphore when all I
want is for the projector to be a second monitor on my laptop?
Ken Dibble
www.stic-cil.org
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>
> Ken:
Speakers may be a little less available this week, as there's a big
conference in Germany.
I'm curious why you are looking for wireless solutions instead of the more
standardized cabled ones.
I have clients who host presentations and the presenters Windows, Linux and
Apple machines - both Macs and iPads. Powerpoint, Keynote, PDFs and live
browsers. I'd be interested to learn if there are solutions that can handle
all these variations, which are essentially analog VGA or HDMI.
--
Ted Roche
Ted Roche & Associates, LLC
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>I'm curious why you are looking for wireless solutions instead of the more
>standardized cabled ones.
Flexibility for the location of the presenter, and avoiding the need to
snake/tape-down cables on the floor and create a tripping hazard.
>I have clients who host presentations and the presenters Windows, Linux and
>Apple machines - both Macs and iPads. Powerpoint, Keynote, PDFs and live
>browsers. I'd be interested to learn if there are solutions that can handle
>all these variations, which are essentially analog VGA or HDMI.
I've just had a meeting with the various contractors for this project.
Turns out they had an expert on board, but they did not really know what
we, specifically, were looking for (I got brought into this process late).
Guy works for a company called "Syracuse Time & Alarm". As in time punch
clocks, fire alarms and security systems. Who knew they did AV stuff?
Nobody in this town did, apparently, except this general contractor.
Anyway this guy assured me that they can do a wireless system encompassing
video and audio, in which the only wireless connectivity involves the
actual video and audio signals. They can supply spitter switches to enable
ganging two or more projectors to one source, but each projector will
operate on its own wireless frequency so we can have three presentations
running at once. They can supply a channeled audio system that will allow
separate audio for each room but allow them to be ganged together when the
moveable walls are down. This will also accommodate an RF assistive
listening system that will work separately in each room (and when the walls
are down, the same audio gets sent to the three separate systems).
The wireless will work off a USB stick plugged into the laptop. It doesn't
require any installation of software. But I don't know if this is
OS-agnostic. We use Windows here, and it didn't occur to me to ask about
Macs. We want people to be able to bring in their own laptops and some of
those may be Macs. It's a good question. I will pass it on.
The only other unanswered question for me is, can their equipment
accommodate the option of plugging a USB stick into the projector remote to
allow for PowerPoint presentations without a laptop? They are looking into
it; the guy did not know that such remotes exist.
Thanks, Ted.
Ken Dibble
www.stic-cil.org
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Author: Malcolm Greene
Posted: 2014-11-14 11:27:58 Link
Hi Ken,
Not sure if this is too small (50" projected display?) but its
definitely a cool product ... table with built-in projector.
http://shop.lenovo.com/us/en/landingpage/oprah-favorite-things/
It may also be worth googling Apple AirPlay. This allows iPhones, iPads,
and MacBooks to wirelessly connect to large screen TVs that have a $100
AppleTV device attached. Considering the cost of some of the AV
equipment I've seen, it may be cheaper to purchase a MacBook or 2 and a
few iPads than dedicated AV equipment. If you have to display Windows
stuff, run a VM on your MacBook.
I share your interest and will be tracking this thread. Good luck!
Malcolm
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>Not sure if this is too small (50" projected display?) but its
>definitely a cool product ... table with built-in projector.
>http://shop.lenovo.com/us/en/landingpage/oprah-favorite-things/
That's very cool.
But the explanation of the projector feature talks about "home theater". I
can't find specific specs on the projector portion, but typically "home
theater" projectors aren't bright enough for conference presentations,
which are done in large, and not always very dark, rooms. You need at least
3000 lumens and a good long throw distance for that.
Ken Dibble
www.stic-cil.org
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Just following up on this because some people expressed interest in the
outcome.
The system is (finally) nearly complete. We ended up not going with a full
wireless setup due to cost. As it is, the cost, installed, exceeded
$30,000. Full wireless would have added another $10,000.
So we have a system that works across any combination of one, two, or three
movable-wall-separated rooms.
Each room has a ceiling-mounted projector and its own ceiling-mounted
speakers. Laptops can be connected via VGA and audio cable to a wall jack
in any room. So any device that outputs VGA and headphone audio will work.
A small table is set up near each wall jack to put the laptop on. Using a
switching system, the laptop output can be sent to one, two, or three
projectors and sets of room speakers.
There is a wireless remote for each projector to turn it on/off and handle
adjustments.
We will supply RF wireless remote USB plugin devices for each laptop so
presenters don't have to stay near the table. (I don't know much about
those but assume they are OS-dependent; we only plan to buy Windows devices.)
However, there is no capability to host a presentation on a projector using
only a USB stick without a computer. The vendors didn't seem to understand
this technology or how to enable it with ceiling-mounted projectors. I
would guess you could supply a USB port on the wall that feeds the
projector-input switching system, but I don't know. No doubt it would have
increased the cost.
There is also a portable wireless "collaboration" device that allows two
laptops in the same room to feed the same wall jack, in case we have two
presenters with separate presentations working together. We only have one
of these though, so "collaboration" can only occur in one presentation
(regardless of room size) at a time.
We have wireless mics with channel switching to allow them to connect to
speakers in one or more rooms.
We also have a wireless assistive listening system that can output on
separate or combined channels for any combination of rooms.
The facility is fully handicapped-accessible and can accommodate at least
200 people (probably more if they don't need to be able to sit at tables).
Lots of free parking nearby, and we rent it out for a reasonable fee when
we aren't using it ourselves.
Ken Dibble
www.stic-cil.org
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