how to control a digital projector with labview

[John E Wilson]

I would like to couple a digital projector with camera acquisition. Can a digital projector be controlled by Labview?

[shoneill]

Hi John,

You mean apart from connecting the projector to the VGA (or better, DVI) output of your graphics card?

Greets

Shane.

[John E Wilson]

Hi,
yes, sorry I should have been more specific.
I want to send seperate image files to the digital projector, not just the screen content
any ideas?
John

[shoneill]

I'd still go the way of connecting to VGA or DVI. A craphics card with two VGA outputs (or one DVI and one VGA) could be used to display the VI on the computer on one screen, and the captured image in full-screen on the second.

I have no experience with telling LabVIEW to use one screen or the other though, Maybe someone else can help here.....

If the projector can accept files (*.jpg, *.bmp?) then perhaps giving the name and model of the projector might help.....

Greets

Shane.

[John E Wilson]

Hi,
I haven't bought the projector yet, I was waiting to see if I got any advice favouring a certain model
thanks
John

[Scott Seidman]

John E Wilson wrote in news:506500000005000000686B0100-
1079395200000@exchange.ni.com:

> Hi,
> I haven't bought the projector yet, I was waiting to see if I got any
> advice favouring a certain model
> thanks
> John

I'd test feasibility first by running your prototype system on whatever VGA
displays you happen to have laying around. A 2-output graphics card is not
extravagant, but projectors can be a real expense.

Scott

[John E Wilson]

thanks, good point,
what about the basics of getting labview to send output to a seperate vga screen ( I have no experience of using 2-output graphics - is this going to be trivial for labview?)
thanks
John

[Scott Seidman]

John E Wilson wrote in news:506500000005000000996B0100-
1079395200000@exchange.ni.com:

> thanks, good point,
> what about the basics of getting labview to send output to a seperate
> vga screen ( I have no experience of using 2-output graphics - is this
> going to be trivial for labview?)
> thanks
> John

John--

I haven't tried to use multiscreens with labview, other than two screens
configured by the OS to behave as one giant desktop. If you get creative
this way, I'm sure that you can just make sure that individual parts of the
image get placed on the appropriate screen.

I google search for "multiscreen labview", though, produces around 10 hits,
and one of those might help you out in f
inding a true multiscreen approach.

Scott

[Tristan_J]

John,
Unfortunately Labview does not offer the support to directly control a second display device. I would recommend using the dual monitor configuration and letting the operating system control what image is displayed on the projector.

Regards

Tristan J
Applications Engineer
National Instruments

[Marty G.]

Tristan J wrote in message news:<506500000005000000286D0100-1079395200000@exchange.ni.com>...
> John,
> Unfortunately Labview does not offer the support to directly control a
> second display device. I would recommend using the dual monitor
> configuration and letting the operating system control what image is
> displayed on the projector.
>
> Regards
>
> Tristan J
> Applications Engineer
> National Instruments

Sounds like a good application for an ActiveX control.