A sign made of a vertical line of LEDs? - test-drb@ccmp.vtda.org

13 Nov 1998

...
 > Several times in the past I've seen
home-brewed and perhaps
> CPU-driven signs that consist of a single vertical line of
> perhaps a dozen or two LEDs. 
...
  This has been done a number of times.  One of the
early electronic magazines
 had a clock that you needed to scan your eyes over to read the time.  A
 friend of mine designed a pendulum for an art show with the LED section
 about 6 feet long or so where graphics could be displayed.  I don't recall a
 name ever being associated with this type of display.  It would be a
 *really* fun thing to do now that multicolor LEDs are available and a full
 color graphics unit could be done fairly "easily". 
Basicly the same Idea has been used for a 3D display.
A 2D matrix of LEDs wil be moved fast forward and back,
and the LEDs are fired right in time to give a 3D picture.
It's even available in colour. But it is only visible when
you are in front of the display, so it's mor like a 3D
monitor, since you cant walk around. (A different aproach,
but somewhat similar, works with a spiral up winding acryl
plate on a rotating dish. A Laser highlightens points within
this cylindical volume to produce a picture. Since the
acrylic surface is spiral, the laser can reach every 3D
point with the same angle - the beam comes from above
or beyond).

Gruss
hans

--
Ich denke, also bin ich, also gut
HRK