Jurek and the Amazing Techno, Colored DreamWall

Jurek and the Amazing Techno, Colored DreamWall

The title is mostly a placeholder, as I haven't really figured out a name for it yet. This project is a wall hanging that consists of semi-large triangular pixels using discrete RGB LED's and PWM to control intensity levels of each LED, resulting in a 4096-color display.

Saturday, October 07, 2006

Pretty Colors!

I made some more good progress today. I got 20 of the pixels glued into place (the first driver board I was testing with Thursday). This means a far better color mixing than Thursday's video had. As you can see by the first video (4.2MB), there are really very few hotspots at all and you have to look hard to find them.

The second video (3.4MB) was a request by someone who wanted to see the LEDs in action without the diffusing acrylic. It still looks pretty neat and gives a bit different of an effect. Maybe I can make 2 different tops, one that's the standard acrylic with contact paper and another that's either clear acrylic or slightly-buffed/sanded.

Yes, I actually have made a small amount of progress in the coding department today. There were a couple bugs and inconsistencies with the way I was coding everything up. I wasn't able to address a single driver chip individually, so I was seeing some rather odd side effects whenever I tried.
The main issue I tracked it down to was P0 (one of the I/O busses) not working at all on either the starter kit board, nor my own board. Perhaps there's a processor register setting that I'm not doing to get these ports to work properly; I'll have to dig through the manual.
As is evident in the videos, I am quite able to address each driver chip individually.

I also tested to see how white "white" is, and it's rather sad and abysmal. On most pixels, it's quite pink (red is overpowering), and in others, it's purple or blue (green is underpower). It's a little late in the game to fix this, so I guess I'll just have to live with it. Oh well... :/

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Anonymous Anonymous said...

Hey there :) had a chance to look at the blog again - everything is looking awesome (though of course I don't understand everything with the coding...aesthetically, it looks sweet!) the link for one of the videos isn't working, though...(http://www.technowall.net/m/color_cycle.jpg)



Monday, October 16, 2006 4:59:00 PM  
Blogger Jurek said...

Thanks :)

The link has been updated

Monday, October 16, 2006 7:18:00 PM  

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