Author Topic: Big Matrix - revisited  (Read 3955 times)

Offline JonB256

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Big Matrix - revisited
« on: July 20, 2013, 11:54:50 AM »
With a lot of help from Dave and Sean and Fred and Tom and Debbie, we got my monster matrix assembled and playing at The Academy.

The thing was very close to 14ft wide by 4ft tall. 126 pixels wide, 32 pixels tall (4032 pixels or 12,096 channels). Used every output on two Falcon 16 controllers.

But - as I review the pictures and videos, I really think it was too, too wide. It was great for text but not good for pictures, graphics, and certainly not the new feature for Movies.  Since SD video has a 4:3 ratio, for me to do justice to a movie, I'd need 94 rows of pixels (126x94). That would literally triple the size of the matrix. So I started playing with numbers. The magic numbers seem to be 72 x 54 pixels. The exact ratio, and divisible by 3 to work best with Flex Strips and the way they can be cut/spliced.

Using those dimensions (which work out to 7.9ft by 5.9ft, call it 8ft by 6ft), it still fits in my garage door frame.
Logistically, I could run a Flex strip over and then back (144 pixels), still within amperage margin per channel. That would then mean I'd use 27 channels on my Falcon 16s instead of all 32.

I made a demo model in xLights and ran some pictures over it - looks much more like a video screen (well, it IS much more like a video screen)

To convince my wife that this is a good idea, I put painter's tape on the garage door in an 8x6 pattern. She was the original driver for the very wide, 14ft screen. I think she'll "settle" for this.

Opinions?????


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« Last Edit: July 20, 2013, 11:58:41 AM by JonB256 »

Offline smeighan

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Re: Big Matrix - revisited
« Reply #1 on: July 20, 2013, 12:58:37 PM »
I think this will be awesome!

I think u have the biggest display.
Need to get polar express running
Sean
Littleton, CO Latest releases http://nutcracker123.com/nutcracker/releases xLights/Nutcracker Forum http://nutcracker123.com/forum/index.php Facebook [url=https://www.facebook.com/groups

Offline JonB256

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Re: Big Matrix - revisited
« Reply #2 on: July 20, 2013, 01:42:52 PM »
And the verdict from my wife (note that her car was not there when I took the picture)

YES!

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Offline Steve Gase

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Re: Big Matrix - revisited
« Reply #3 on: July 20, 2013, 02:34:16 PM »
wow, a 10' TV screen!  (118" diagonal)

you could show movies at the park!  :)
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Offline JerryPlak

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Re: Big Matrix - revisited
« Reply #4 on: July 20, 2013, 04:04:09 PM »
Like to more about this  :)  8)

Sent from my SCH-I535 using Tapatalk 2

« Last Edit: July 20, 2013, 06:45:14 PM by JerryPlak »
Jerry Plak

Offline MyKroFt

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Re: Big Matrix - revisited
« Reply #5 on: July 20, 2013, 04:15:22 PM »
Pi Player - Just need some speakers or sit in the car in the driveway with the radio on and watch a flic!

Myk


wow, a 10' TV screen!  (118" diagonal)

you could show movies at the park!  :)

Offline JonB256

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Re: Big Matrix - revisited
« Reply #6 on: July 20, 2013, 07:34:53 PM »
While I am certain to have some movie clips play during songs like Blue Christmas or Grandma Got Run Over, this will certainly not replace an actual LCD projector. It will be big, though.

JerryPlak - what details would you like?

Offline JerryPlak

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Re: Big Matrix - revisited
« Reply #7 on: July 20, 2013, 08:06:05 PM »
While I am certain to have some movie clips play during songs like Blue Christmas or Grandma Got Run Over, this will certainly not replace an actual LCD projector. It will be big, though.

JerryPlak - what details would you like?

What type of Flex strip.
what will the spacing between Flex strip.
how are you going to mount the Flex strip.
thinking this will be Awesome see & do!  8)

Offline JonB256

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Re: Big Matrix - revisited
« Reply #8 on: July 20, 2013, 09:40:17 PM »
I'm using Ray Wu TM1809 flex strips in the silicone tube.

Since the distance between pixels is 33mm I'm making that my distance between strips. I tried tie wrapping to PVC and it worked but wasn't very straight. So my plan now is to put horizontal wooden strips between each flex strip, close enough to be a friction fit for the flex strips.

Those wooden strips would be screwed and glued to a sheet of plywood, then painted or stained for water resistance. The strips would be forced down into the gap, being sure to get vertical alignment.

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« Last Edit: July 20, 2013, 09:44:44 PM by JonB256 »

Offline JerryPlak

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Re: Big Matrix - revisited
« Reply #9 on: July 20, 2013, 09:56:39 PM »
 ;) Thanks for the info  :D

Offline smeighan

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Re: Big Matrix - revisited
« Reply #10 on: July 20, 2013, 11:43:51 PM »
I'm using Ray Wu TM1809 flex strips in the silicone tube.

Since the distance between pixels is 33mm I'm making that my distance between strips. I tried tie wrapping to PVC and it worked but wasn't very straight. So my plan now is to put horizontal wooden strips between each flex strip, close enough to be a friction fit for the flex strips.

Those wooden strips would be screwed and glued to a sheet of plywood, then painted or stained for water resistance. The strips would be forced down into the gap, being sure to get vertical alignment.

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Hi Jon; i plan on also making a horizontal matrix with flex strips. I plan on using polycarbonate panels , the ones used for greenhouses
http://www.greenhousemegastore.com/product/polycarbonate-panel-6mm-clear/polycarbonate-panels

spacing will be exact and I can lift whole panel as one unit.

thanks
sean

Offline MyKroFt

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Re: Big Matrix - revisited
« Reply #11 on: July 21, 2013, 02:54:57 AM »
I'm using Ray Wu TM1809 flex strips in the silicone tube.

Since the distance between pixels is 33mm I'm making that my distance between strips. I tried tie wrapping to PVC and it worked but wasn't very straight. So my plan now is to put horizontal wooden strips between each flex strip, close enough to be a friction fit for the flex strips.

Those wooden strips would be screwed and glued to a sheet of plywood, then painted or stained for water resistance. The strips would be forced down into the gap, being sure to get vertical alignment.

Galaxy Note II

Hi Jon; i plan on also making a horizontal matrix with flex strips. I plan on using polycarbonate panels , the ones used for greenhouses
http://www.greenhousemegastore.com/product/polycarbonate-panel-6mm-clear/polycarbonate-panels

spacing will be exact and I can lift whole panel as one unit.

thanks
sean

You can also get the U channels to seal up the edges etc....

Myk

Offline JonB256

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Re: Big Matrix - revisited
« Reply #12 on: July 21, 2013, 05:02:27 AM »

Hi Jon; i plan on also making a horizontal matrix with flex strips. I plan on using polycarbonate panels , the ones used for greenhouses
http://www.greenhousemegastore.com/product/polycarbonate-panel-6mm-clear/polycarbonate-panels

spacing will be exact and I can lift whole panel as one unit.

thanks
sean

Sean, this will be new strips you are ordering from Ray Wu?  What pixel dimensions are you looking at?

Offline JonB256

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Re: Big Matrix - revisited
« Reply #13 on: July 21, 2013, 08:13:50 AM »
The greenhouse grid at the Academy used narrow ws2811 strips. If you use them, consider putting something like cotton or sisal rope behind the strip to press it against the front of the panel.

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Offline Steve Gase

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Re: Big Matrix - revisited
« Reply #14 on: July 21, 2013, 10:39:17 AM »
did you get the ordering info for the ws2811 strips?  I want to be sure that I'm not going to get the resolution=3 product.

 

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