I am writing a proposal to use Pure-Data to control LED panels that would light part of a rock quarry. The panels should both illuminate and show pixelated imagery (the resolution dependent on the quality of LEDs). I would looking for the cheapest and easiest solution. It has to be visible at some distance so the panel size would have to be at least 2 x 3 meters. This sort of application is completed new to me and any and all advise would be super helpful..
Thanks
A
I guess some microprocessor like Arduino will be needed for that. Plus shift registers since you'll be using lots of LEDs. Do you wanna use RGB LEDs? How do you want to use Pd in that? Will the panels react to some or image, or something like that?
On Thu, Oct 3, 2013 at 11:58 AM, Alvin Google alvin.oslvn@gmail.com wrote:
I am writing a proposal to use Pure-Data to control LED panels that would light part of a rock quarry. The panels should both illuminate and show pixelated imagery (the resolution dependent on the quality of LEDs). I would looking for the cheapest and easiest solution. It has to be visible at some distance so the panel size would have to be at least 2 x 3 meters. This sort of application is completed new to me and any and all advise would be super helpful..
Thanks
A
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Hi,
Alvin Google wrote:
I am writing a proposal to use Pure-Data to control LED panels that would light part of a rock quarry. The panels should both illuminate and show pixelated imagery (the resolution dependent on the quality of LEDs). I would looking for the cheapest and easiest solution. It has to be visible at some distance so the panel size would have to be at least 2 x 3 meters. This sort of application is completed new to me and any and all advise would be super helpful..
It depends heavily on whether your want still images or animation.
If you want animation, the difficulty grows with the fps rate.
Ie if you want 1 fixed picture per 10 seconds, you can hack something out of an arduino + i2c adressable led strips (check on hackaday.com for hardware sources ; have a look at the peggy 2.0 board).
If you want video, ask Chinese factories that make video displays with LED curtains. Then you can hook up a VGA signal into your LED display. It's rather hard to DIY and certaintly not a beginner project.
Hope this helps,
On the topic of arduino controllers--I recently listened to a presentation at the Kansas City Open Hardware Group meeting about Motate. It's an arduino library (and someday a board). https://github.com/giseburt/Motate
The author was motivated to write the library for motor control, but it's still applicable to bit-banging in general. He said that his code could reduce the number of clock cycles it takes to toggle an I/O (paraphrased). I haven't dived in too deep, or figured out a test for it--but I thought I'd bring it up, regarding the difficulty with higher fps rates.
Chuck
On Thu, Oct 3, 2013 at 5:54 AM, Charles Goyard cg@fsck.fr wrote:
Hi,
Alvin Google wrote:
I am writing a proposal to use Pure-Data to control LED panels that would light part of a rock quarry. The panels should both illuminate and show pixelated imagery (the resolution dependent on the quality of LEDs). I would looking for the cheapest and easiest solution. It has to be visible at some distance so the panel size would have to be at least 2 x 3 meters. This sort of application is completed new to me and any and all advise would be super helpful..
It depends heavily on whether your want still images or animation.
If you want animation, the difficulty grows with the fps rate.
Ie if you want 1 fixed picture per 10 seconds, you can hack something out of an arduino + i2c adressable led strips (check on hackaday.com for hardware sources ; have a look at the peggy 2.0 board).
If you want video, ask Chinese factories that make video displays with LED curtains. Then you can hook up a VGA signal into your LED display. It's rather hard to DIY and certaintly not a beginner project.
Hope this helps,
-- Charlot
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
I helped build this wall: http://blog.x37v.info/2012/10/10/led-wall Controlled with video. It was not cheap but relative to commercial solutions, not bad at all. For a smaller section like you're talking, it wouldn't be too bad. It is quite bright.
My partner posted some of the build details here: http://dorkbotpdx.org/blog/armatronix/led_video_wall
These LED strips are much nicer to deal with than trying to build up your own panels with individual LEDs. There are some other LED strips out there too, some that are probably even less dense and likely less expensive if you don't need the resolution.
-Alex
On Thu, Oct 3, 2013 at 1:58 AM, Alvin Google alvin.oslvn@gmail.com wrote:
I am writing a proposal to use Pure-Data to control LED panels that would light part of a rock quarry. The panels should both illuminate and show pixelated imagery (the resolution dependent on the quality of LEDs). I would looking for the cheapest and easiest solution. It has to be visible at some distance so the panel size would have to be at least 2 x 3 meters. This sort of application is completed new to me and any and all advise would be super helpful..
Thanks
A
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We are also looking these for a future project: http://www.aliexpress.com/item/DC12V-input-12mm-WS2811-pixel-node-100pcs-a-s...
On Thu, Oct 3, 2013 at 8:07 AM, Alex x37v.alex@gmail.com wrote:
I helped build this wall: http://blog.x37v.info/2012/10/10/led-wall Controlled with video. It was not cheap but relative to commercial solutions, not bad at all. For a smaller section like you're talking, it wouldn't be too bad. It is quite bright.
My partner posted some of the build details here: http://dorkbotpdx.org/blog/armatronix/led_video_wall
These LED strips are much nicer to deal with than trying to build up your own panels with individual LEDs. There are some other LED strips out there too, some that are probably even less dense and likely less expensive if you don't need the resolution.
-Alex
On Thu, Oct 3, 2013 at 1:58 AM, Alvin Google alvin.oslvn@gmail.comwrote:
I am writing a proposal to use Pure-Data to control LED panels that would light part of a rock quarry. The panels should both illuminate and show pixelated imagery (the resolution dependent on the quality of LEDs). I would looking for the cheapest and easiest solution. It has to be visible at some distance so the panel size would have to be at least 2 x 3 meters. This sort of application is completed new to me and any and all advise would be super helpful..
Thanks
A
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Alexandros Drymonitis -
Alvin Google -
Charles Goyard -
Charles Z Henry