Cool hack (was Busses vs no busses)

From: Cini, Richard <RCini_at_congressfinancial.com>
Date: Tue May 9 10:43:01 2000

There was a project just for this in Electronics Now or Popular Electronics
just recently. I'd say Feb. or March issue.

If I have time tonight, I'll dig-up the article. As I recall, it uses a PIC
and a group of LEDs on a pendulum to provide the date and time using the
same "persistence of vision" as mentioned below. I don't recall if the
swinging was user-invoked, motorized or magnetic.

Rich

==========================
Richard A. Cini, Jr.
Congress Financial Corporation
1133 Avenue of the Americas
30th Floor
New York, NY 10036
(212) 545-4402
(212) 840-6259 (facsimile)


-----Original Message-----
From: Marvin [mailto:marvin_at_rain.org]
Sent: Tuesday, May 09, 2000 11:06 AM
To: classiccmp_at_classiccmp.org
Subject: Re: Cool hack (was Busses vs no busses)




John Foust wrote:
>
> What's the name of those signs that are composed of nothing but
> a single vertical column of LEDs, where you can only see the
> image (or the digital clock display, etc.) as your eye scans
> across it, leaving the multiplexed image in your brain?

I can't recall either, but that brings to mind an interesting project a
friend of mine worked on quite a few years ago. The Art Museum here was
having some kind of show and an artist wanted to paint electronic pictures.
My friend designed the electronics (I built the circuit boards) to put a
line of LEDs on a pendulum and paint pictures electronically as the pendulum
swung through its arc. With the multi-colored and higher intensity LEDs
available today, it would be really cool to do the same thing but with color
pictures. Doesn't sound like too hard a project especially with the speed of
todays computers.
Received on Tue May 09 2000 - 10:43:01 BST