Forums > MaxMSP

3 way projector output

April 12, 2011 | 10:20 pm

Hi everyone, does anyone know of a way to output video from a MacBook pro to three different projectors (from just the one computer? Is there a lead that goes from the laptop to three ends (rather than the usual 1)?
Cheers
J


April 12, 2011 | 11:22 pm

matrox triple head to go is probably the most common way
you cant just split the copper.

http://www.matrox.com/graphics/en/products/gxm/th2go/


April 13, 2011 | 12:32 am

yeah, matrox is the way to go for 3 split. right now im using a 2 projector setup but utilizing the pass-through (image duplication). anyway, here is some patcher stuff that might help if you pick one up. basically 3 windows and a full-screen toggle ;) keep in mind installing the drivers for the matrox is a HUGE pain in the ass and as sensitive as a skunk humping a hedgehog; one bad poke and the week is ruined.

– Pasted Max Patch, click to expand. –

April 13, 2011 | 12:13 pm

Cool, thanks guys. I’ll check these out


April 13, 2011 | 12:28 pm

Would it be possible to use one of these for a macbook pro? http://www.maplin.co.uk/svga-splitter-2-and-4-port-36773?ordercode=A94BB


April 13, 2011 | 2:58 pm

If you want to just send the same image to 3 projectors then yes, use this sort of thing. Some projectors will also have a monitor output that can send on whatever is coming in to another projector/monitor so you can just daisy chain them.

If you want to split an image across the 3 projectors you’d need a triplehead2go.

The box you linked should work fine with a MBP VGA output, but if you are concerned just ask Maplin a question at the bottom of the page you have linked.


April 13, 2011 | 3:07 pm

I’ve got a 3 screen multichannel patch/app hosted here (based on Vade’s patches)

http://www.aranarproductions.com/enable.html

Pardon my craptacular website… Desperately needs an update.


April 13, 2011 | 3:27 pm

Awesome, thanks guys


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