<div dir="ltr"><div><div>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).<br><a href="https://github.com/giseburt/Motate">https://github.com/giseburt/Motate</a><br>
</div><br>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.<br>
<br></div>Chuck<br><div><div><br></div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Oct 3, 2013 at 5:54 AM, Charles Goyard <span dir="ltr"><<a href="mailto:cg@fsck.fr" target="_blank">cg@fsck.fr</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<div class="im"><br>
Alvin Google wrote:<br>
> I am writing a proposal to use Pure-Data to control LED panels that<br>
> would light part of a rock quarry. The panels should both illuminate<br>
> and show pixelated imagery (the resolution dependent on the quality<br>
> of LEDs). I would looking for the cheapest and easiest solution. It<br>
> has to be visible at some distance so the panel size would have to<br>
> be at least 2 x 3 meters. This sort of application is completed new<br>
> to me and any and all advise would be super helpful..<br>
<br>
</div>It depends heavily on whether your want still images or animation.<br>
<br>
If you want animation, the difficulty grows with the fps rate.<br>
<br>
Ie if you want 1 fixed picture per 10 seconds, you can hack something<br>
out of an arduino + i2c adressable led strips (check on <a href="http://hackaday.com" target="_blank">hackaday.com</a> for<br>
hardware sources ; have a look at the peggy 2.0 board).<br>
<br>
If you want video, ask Chinese factories that make video displays with<br>
LED curtains. Then you can hook up a VGA signal into your LED display.<br>
It's rather hard to DIY and certaintly not a beginner project.<br>
<br>
Hope this helps,<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Charlot<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
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