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jstjohnz
12-06-2011, 11:47 PM
This is the first panel of my pixel matrix for this year's display. It's 32" x 84" with 672 pixels arranged in a 2" grid. I used pegboard for a template and drilled 672 7/16" holes through 6 pieces of black coro. The matrix will be 14 feet high by 8 feet wide, 84x48 resolution, with a total of 4032 pixels. My original plan was to go for 8 panels but I'm running a bit behind schedule so I'm scaling it back to 6.

These are the 12-bit TLS3001 pixels. These have the square flat base that's filled with epoxy so they should be good as far as waterproofing. I'm hoping that I'll have enough pixel resolution to be able to display images and/or video clips. Controlled by 6 maxed-out E681s in CG-1500 enclosures.

dirknerkle
12-07-2011, 12:12 AM
Wow... doesn't look like that's going to fit in the trunk!!! :lol:

Can't wait to see it in operation! Very nice craftsmanship!

fathead45
12-07-2011, 12:13 AM
holy dang, that is a matrix lol. why black an not white?

Matt_Edwards
12-07-2011, 12:51 AM
Controlled by 6 maxed-out E681s.

That sounds like a bit of an understatement!

Can't wait to the see the Videos.

jstjohnz
12-07-2011, 01:28 AM
holy dang, that is a matrix lol. why black an not white?

My thinking is that black will minimize light reflection and be more of an invisible background. Of course I could be wrong.... I probably should have tried samples of both black and white to see how they compared.

I was hoping that by backing off on the maximum intensity I would be able to get by running 84 pixels per string. But there was still too much voltage drop so I wound up having to do 42-pixel strings, which means twice as many cables between the pixels and the controllers.

I am using the black 18-gauge 4-conductor cables from Ray. Even though these are 3-wire pixels, I wanted to have 4-wire pigtails out of the controllers so they could be used with either 3 or 4-wire pixels.

boarder3
12-12-2011, 08:01 PM
What software are you using to run this matrix?

fathead45
12-12-2011, 08:35 PM
well i used pegboard first that painted white and not as reflective and didnt like it,. with white coro it looked so much better. actually had more of the shape i wanted when i scrolled txt and what not instead of looking like dots since the white lit up as well.

TimW
12-12-2011, 09:13 PM
Jim the gamma correction on the 3001s is fantastic. Clearly superior to 2801 (at least on my 16x21 grid vs my 32x21 2801 megatree). Hard to show in pics but in person the images are so much more colourful (less washed out)!

Working very well thanks. Looking forward to seeing it on your scale though!

jstjohnz
12-13-2011, 02:05 AM
So far I have all 6 panels mounted (total size 8 ft wide by 14 ft high), and 4 of the 6 controllers wired in. So basically I can light up the left-hand 2/3. Even at the current 32x84 resolution it does a good job of rendering images. The distance from the front of my house to the street is about 150 feet, and at that distance it's just barely possible to make out individual pixels.

fathead45
12-13-2011, 07:56 AM
sounds good, cant wait.

here is mine. not that great but work for this year lol
http://www.youtube.com/watch?v=0vwkPqiunto&feature=related

mschell
12-13-2011, 10:40 PM
Pictures! Pictures! Or video!

fasteddy
12-13-2011, 11:15 PM
So far I have all 6 panels mounted (total size 8 ft wide by 14 ft high), and 4 of the 6 controllers wired in. So basically I can light up the left-hand 2/3. Even at the current 32x84 resolution it does a good job of rendering images. The distance from the front of my house to the street is about 150 feet, and at that distance it's just barely possible to make out individual pixels.

your such a tease Jim :)

boarder3
12-18-2011, 11:27 AM
What software runs that lcd screen?

jstjohnz
12-18-2011, 01:32 PM
I am using Madrix to control the pixels and LOR to run the show. LOR outputs a few DMX channels that remote-control Madrix to bring up a specific scene at a specific time.

timon
12-18-2011, 01:33 PM
Jim,

I'd like to see how you mounted the panels. Could you post a few pictured from the back side showing how it was done?

Thanks
John



So far I have all 6 panels mounted (total size 8 ft wide by 14 ft high), and 4 of the 6 controllers wired in. So basically I can light up the left-hand 2/3. Even at the current 32x84 resolution it does a good job of rendering images. The distance from the front of my house to the street is about 150 feet, and at that distance it's just barely possible to make out individual pixels.

tlorek
12-18-2011, 02:02 PM
Jim,

Is this running? If so, I may have to drive by tonight.

ultanium
12-18-2011, 10:22 PM
Video please?

jstjohnz
12-18-2011, 11:14 PM
Jim,

Is this running? If so, I may have to drive by tonight.

Yes it's up and running. I have 2 strands not lit but I can't get at the wiring without partially removing a panel and I'm not up to that right now.

jstjohnz
12-18-2011, 11:30 PM
Video please?

I shot a few video clips today with my cell phone camera, I'll post a couple if they're any good.

ultanium
12-22-2011, 02:08 PM
????

timon
12-23-2011, 04:13 PM
I guess the video didn't com out well. Any change we could get some daytime pictures?


I shot a few video clips today with my cell phone camera, I'll post a couple if they're any good.

PurpleNeons
12-23-2011, 06:45 PM
I have a question about the matrix panels...where can you purchase them?

jstjohnz
12-23-2011, 08:31 PM
@timon I had a couple of strands that weren't lit, just got around to troubleshooting that today. When I hung the panels, the upper ones needed to have extension cables attached to reach the controllers, and a couple of those cables were bad. Unfortunately I had the connector sets hidden behind the lower center panel, so I had to partially undo that panel to get at the bad cables to replace them. I shot some stills and videos today and I'm uploading them right now.

@PurpleNeons I'm sure similar panels are available commercially but these are home-made. I'll post some more details about the construction.

jstjohnz
12-23-2011, 09:00 PM
OK, here are a couple of videos. The camera had trouble holding the correct exposure as the panel brightness changed, so there are some images that are over-exposed. The other display elements in the videos are a standard 12-strand megatree made up of 60 strands of 100-count minis in 5 colors, and 15 coro mini-trees.

I also shot a few stills, attached in the next post.

I will try to get some more videos with a better camera tomorrow.

http://vimeo.com/34149994 battle hymn of the republic
http://vimeo.com/34149010 jingle bells techno mix
http://vimeo.com/34149321 christmas eve sarajevo
http://vimeo.com/34150375 christmas vacation theme

jstjohnz
12-23-2011, 09:28 PM
Some stills. These give a better idea of what the panels look like to the eye. The diagonal lines are small tree branches that were in the way.

timon
12-23-2011, 09:50 PM
Jim,

You might try shooting the video around dusk. That way you would have some dim daylight and I the camera would have an easier time due to not having such a large difference in exposer across the entire display.

BTW, how far away is the viewer going to be from your display? Mine would be between 20 and 40 feet depending if they are on the sidewalk or in a car on the street. I'm thinking a 1 1/2 grid might be better at those distances. I've also been thinking rather then put the pixels in coro I might use a 3/4 square knotted net and sew the pixels in every other cell. Three reasons, less wind resistance, you can somewhat see through it and it might be easier to store since you can roll it up.

Your thoughts?

jstjohnz
12-23-2011, 10:15 PM
I was intending to shoot at dusk but didn't make it home in time. I like the net idea, I've been looking for a flexible option. I was considering something like canvas as a possibility. I'm guessing the distance from the panels to the road is about 150 feet or so, maybe just a bit more. At 2" spacing, you can make out individual pixels at that distance but they're starting to come together.

timon
12-23-2011, 10:41 PM
If your that far away then at my distance 1 1/2" might still be too course but with the size of the pixels I'm not sure if one can get them much closer without going to strips. Might be best to stay with rear projection which is the other option I was thinking about. I like do like Nevada Christmas's Mega Wreath. http://www.nevadachristmas.com/

scedward
12-23-2011, 11:10 PM
I have a question about the matrix panels...where can you purchase them?

@PurpleNeons: For what you seem to be interested in, this might be a good place for you to start. http://www.adafruit.com/products/611

http://ladyada.net/make/adavision/

@jstjohnz That Matrix is sweet! Thanks for sharing the videos!

-Scott

PurpleNeons
12-23-2011, 11:18 PM
Pretty impressive for home made......has to be a lot cheaper too then commercially manufactured panels.

PurpleNeons
12-23-2011, 11:20 PM
@PurpleNeons: For what you seem to be interested in, this might be a good place for you to start. http://www.adafruit.com/products/611

http://ladyada.net/make/adavision/

-Scott

thanks...as time goes by I'm sure they will drop in price.....to pricey for me right now.....but making my own may be something to look into for the future given the availability of pixel strings and ribbons/strips that are addressable.

jstjohnz
12-23-2011, 11:36 PM
If your that far away then at my distance 1 1/2" might still be too course but with the size of the pixels I'm not sure if one can get them much closer without going to strips. Might be best to stay with rear projection which is the other option I was thinking about. I like do like Nevada Christmas's Mega Wreath. http://www.nevadachristmas.com/

You could do 1" spacing pretty easily, the pixel bodies are about 3/4" square.

tlorek
12-29-2011, 10:40 PM
Jim,

I finally had an opportunity tonight to drive by. Very impressive!! The brightness from the street is AMAZING!

I'm strongly considering an E681 and a dozen 50 ct 2801 strands to replace my current mega tree for next year. I just have to get my hands around sequencing that many channels in Vixen. I don't know if I'll be ready for the mental somersault 3.0 is going to throw my way, and for cost reasons, Madrix is out.

jstjohnz
12-29-2011, 11:29 PM
Glad you liked it. Hopefully we will see better pixel support and more stability in the sequencing software in 2012.

blowfly
08-28-2012, 12:20 PM
Hi Jim, just curious why you chose 42 pixel width instead of 50? It seems like most of the strings available come with 50 in a string.

Thanks,
Mike

fathead45
08-28-2012, 12:26 PM
most outputs only support 42 pixels

budude
08-28-2012, 12:51 PM
16 strands of 42 pixels gets you to 672 pixels - the E680/681 only support 680 (hence the name) so you max it out this way (almost). Using 50 pixels/string would not allow you as many strings. Of course that all changes now with the E682 which can support more.

blowfly
08-28-2012, 03:32 PM
Makes sense. The DMX decoder box I have been playing with only has 128 channels so that's 42 pixels.


16 strands of 42 pixels gets you to 672 pixels - the E680/681 only support 680 (hence the name) so you max it out this way (almost). Using 50 pixels/string would not allow you as many strings. Of course that all changes now with the E682 which can support more.

Great info, thanks guys. I noticed my E682 just shipped! I'm an electronics geek but new to the intelligent LED world and this forum. Tons of good info here, you guys are awesome!

M