[Blabber] LED module? hw -> software interfacing

Robert Diamond rmd6502 at gmail.com
Wed Mar 7 11:36:42 EST 2012


It's a bus - helps make things neater.

On Wed, Mar 7, 2012 at 11:24 AM, Guan Yang <guan at yang.dk> wrote:
> Offtopic question: what is that blue bar thing that collects signals called in Eagle? I've seen it a few times.
>
>
>
> On Wednesday, March 7, 2012 at 11:23 , Robert Diamond wrote:
>
>> Here's the idea I had - the layout of the board is something I'll have
>> to think about some. And there are no bypass caps.
>> Rob D
>>
>> On Tue, Mar 6, 2012 at 6:50 PM, Jim Galvin <jim at galvinized.com (mailto:jim at galvinized.com)> wrote:
>> >
>> > FYI, similar,
>> >
>> > http://www.deepdarc.com/2010/11/27/hacking-christmas-lights/
>> >
>> > Jim
>> >
>> >
>> >
>> >
>> > On Mar 6, 2012, at 1:56 PM, <fractal at maui.net (mailto:fractal at maui.net)> <fractal at maui.net (mailto:fractal at maui.net)> wrote:
>> >
>> > > Thanks, Robert.
>> > > I'm very visually oriented, first of all, and secondly,
>> > > most of my experience has been software oriented, although
>> > > I do know how to hook up simple logic.
>> > > If I can see it I can figger it out.
>> > >
>> > >
>> > > Looking forward to your call
>> > > Dave
>> > > 917 731 6903
>> > >
>> > >
>> > > --- rmd6502 at gmail.com (mailto:rmd6502 at gmail.com) wrote:
>> > >
>> > > From: Robert Diamond <rmd6502 at gmail.com (mailto:rmd6502 at gmail.com)>
>> > > To: "Hack Manhattan!" <blabber at hackmanhattan.danielpacker.org (mailto:blabber at hackmanhattan.danielpacker.org)>
>> > > Subject: Re: [Blabber] LED module? hw -> software interfacing
>> > > Date: Mon, 5 Mar 2012 20:01:16 -0500
>> > >
>> > > Hey Dave,
>> > > Sorry I didn't get back to you sooner - basically what I did was take
>> > > an 8x8 module, and connect it to a 74HC164 + ULN2803 + 100Ù resistor
>> > > pack - those can then be multiplied by 3 for rgb.
>> > >
>> > > For the vertical stacking, I'm thinking use 74hc595's since those can
>> > > be loaded with SPI pretty easily, and their bandwidth exceeds what an
>> > > arduino can deliver.
>> > >
>> > > I'll be back in town weekend after next, I'll try to give you a call then.
>> > > Rob D
>> > >
>> > >
>> > > On Mon, Mar 5, 2012 at 6:07 PM, <fractal at maui.net (mailto:fractal at maui.net)> wrote:
>> > > > Hi Robert. Can you direct me to any online
>> > > > sites that describe how the software drives
>> > > > LED panels? I'm an old-school electrical engineer,
>> > > > so I can figger out technical stuff; any links
>> > > > would be very helpful.
>> > > > I was at the Electric Daisy Carnival in Vegas
>> > > > last year and was totally turned on by the
>> > > > huge displays they had there...
>> > > > thanks
>> > > >
>> > > > dave scruton
>> > > > fractal at maui.net (mailto:fractal at maui.net)
>> > > >
>> > > >
>> > > > --- rmd6502 at gmail.com (mailto:rmd6502 at gmail.com) wrote:
>> > > >
>> > > > From: Robert Diamond <rmd6502 at gmail.com (mailto:rmd6502 at gmail.com)>
>> > > > To: "Hack Manhattan!" <blabber at hackmanhattan.danielpacker.org (mailto:blabber at hackmanhattan.danielpacker.org)>
>> > > > Subject: Re: [Blabber] 3d hackathon: LED module
>> > > > Date: Sat, 3 Mar 2012 13:09:22 -0500
>> > > >
>> > > > Cool! I have the parts for that, and an actual assignment to do just that!
>> > > >
>> > > > On Sat, Mar 3, 2012 at 1:07 PM, <fractal at maui.net (mailto:fractal at maui.net)> wrote:
>> > > > > I have an idea: how about creating a RGB LED plastic module which can
>> > > > > be interconnected like legos to make any size LED sign you like?
>> > > > >
>> > > > > It shouldn't be too hard to design, and you only need to make one
>> > > > > prototype shape if it's done right. Then if it was mass-produced
>> > > > > overseas, voila! instant jumbotron!
>> > > > >
>> > > > > Thoughts?
>> > > > >
>> > > > > Dave Scruton
>> > > > > fractal at maui.net (mailto:fractal at maui.net)
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>> Attachments:
>> - led_matrix.pdf
>>
>> - led_matrix.sch
>>
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