[Noisebridge-discuss] hacklab.to LED sign engineering

[Josh Myer]

On Sun, Feb 01, 2009 at 03:05:54PM -0800, Andy Isaacson wrote:
> Hacklab.to has a LED sign that looks like it might be similar to the
> Noisebridge LED sign!  They blogged some information about their
> project:
> 

That's a fun read, and exactly the kind of thing we should be doing
here at noisebridge!  Why isn't our sign working yet?!

Without prying up the individual boards on our sign, I daresay this is
very different from what we have.  Which makes me sad, since it would
be a lot easier to drive ours if it worked this way.  In particular,
I'd expect a 3 rows of vias with headers on the back in the center.
Their schematic is also all 74-series TTL (with one HCT CMOS,
pedants), with no mention of a UCN5832A.  That's the shift register
used on our rev of this board, which is a bit more fancypants, and
which removes a lot of the dead space framing the panel.

This does smell like the same manufacturer, though.  Either that, or
Canada was a hotbed of LED sign production in the early nineties.
-- 
Josh Myer   650.248.3796
  josh at joshisanerd.com