Sounds like strips of WS2812 LEDs might be the easy way out.  I bought some
from Amazon that have 30 5050 LEDs per meter on a 1/2" wide flexible
strip.  A 5 meter reel ran less than $30.  You can also get them 60 per
meter for less than $50 per reel.  The strips can be cut between any two
LEDs.  They use 5V for power.  You can buy 12V strips as well.  I used them
for Christmas lights.

On Jan 25, 2017 13:14, "Nicola Perotto" <nicola@nicolaperotto.it> wrote:

> Hi all,
> here you can find from 5*5 mm  to 2*2 mm RGB addressable LEDs in many
> variants.
> http://led-color.com/index.php/Product/index/cid/366.html
> I understand that for Neil's project maybe there is nothing interesting
> but for
> others maybe yes!
> I used WS2812B (a strip of 138 plus an additional of 144 chained) and
> worked
> very well.
> They are fragile and sensitive but easy to use and very bright.
> Cheers
>         Nicola
>
>
> On 25/01/2017 19:08, Neil wrote:
> > The WS28xx, or APAxxx LEDs we've not found in small enough packages.
> > The only RGB LEDs we were able to get to fit (in the visible area) are
> > 0404 packages.  We've got these staggered such that 24 LED's fit in a
> > 1.1" x 0.2" strip.  We'd jump at the pixel-addressable types if they
> > were available in 0404 packages.
> >
> > Cheers,
> > -Neil.
> >
> >
> > On 1/25/2017 12:29 PM, Denny Esterline wrote:
> >>> I'm looking for an LED driver that can drive RGB LED's multiplexed. I=
'm
> >>> working on a project for a customer that needs to have approx 120 RGB
> >>> LED's (so 360 individual segments) in a thin strip of under 1 sq inch=
,
> >>> so space is *TIGHT*.  The elements need to be addressed individually.
> >>>
> >>>
> >> Not sure I understand the geometry you're expressing. Long strip 1 inc=
h
> >> tall and 1 inch wide? Or a one inch cube that has 120 LEDs in it?
> >> With that many RGB LEDs my first choice would be one of the pixel
> >> addressable RGB LED strips.
> >> The WS2812 strips use a one-wire time based protocol that can be a bit
> of a
> >> pain.
> >> The APA102c strips cost a bit more, but they're SPI which can make
> things a
> >> lot easier in certain situations.
> >>
> >>
> >>
> >> -Denny
>
> --
>
> *Nicola Perotto
> Sistemi Informatici ed Elettronici
> skype: nicolap
> mob: +39 335 7162 582
> tel: +39 06 916 502 732
> fax: +39 0439 633 1191*
>
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