[Noisebridge-discuss] Sanity check on LED matrix design.

John Adams jna at retina.net
Sun May 20 17:18:53 PDT 2012


On Sun, May 20, 2012 at 1:19 PM, Daniel Pitts <Daniel at coloraura.com> wrote:

>
>  I *almost* see what you're talking about here.  The I found the
> datasheet for74HC164 (not the HS?),  It appears to be an 8bit shift
> register. I'm not sure how that'll be useful for powering an 8x8 display,
> unless you meant one per row, or unless you mean for me to find a shift
> register with larger capacity.
>
> I do see however how a shift register in general will be a helpful tool to
> have in my toolbox.
>

One per row would work, just use a fast output frequency so people can't
see the data clocking by on the display.

You could also charlieplex the display.

http://en.wikipedia.org/wiki/Charlieplexing

-john
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.noisebridge.net/pipermail/noisebridge-discuss/attachments/20120520/97cfc677/attachment.htm 


More information about the Noisebridge-discuss mailing list