IIRC, it took less than 1A.  The LED's, which I soldered
manually by hand into a giant multiplexed system with bare
solid wires bridging the LED's for rows and columns were
mux'ed in 4 sections of 16 LED's each.  Again IIRC.  So
only 4 columns were on at any time.

Dallas Semi was kind enough to donate some memory controllers
and memory was scraped up from various other sources.
Connectors, etc came from dead ISA cards.

I was soooo impressed with myself in that day, but I'm thinking
I could do the whole thing in a single 16F877 today.

Cheers,
-Neil.



-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of shawnmulligan
Sent: Friday, July 19, 2002 10:27 AM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [OT]: Woo-hoo! I found B.O.B. !!!


Pic Dude wrote:

This is a thing of beauty!  Clearly the chip count was a little higher in
1992. Just one question: how much current did the device draw?

-Shawn

> Been digging thru old boxes and I found "B.O.B.", which is an acronym
> for "Bright Organization of Bulbs"...
>
> http://www.avn-tech.com/stuff/moving_message_display.jpg
>

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