Re: 19,008 LEDs on the wall, 19,008 LEDs

["Michael J. Mahon" <mjmahon@aol.com>]

logjam wrote:
> How many of you think a 19,008 bit -  bitmap LED display sounds cool?
> Apple II bus interface?
>
> How many people here would build one if you had the time and money?
>
> This is a survey...I will post pictures of what's done Friday
> Afternoon.
>
> Until then, vote!

Can't beat the hack factor!

(Scribbling on back of envelope...) If a "lit" LED has an average of
10mA of current flowing, and is driven from 5v with resistive losses,
that's 50mW of power per lit LED, or 50W per 1000 lit LEDs.  So half
lit would be an average power of almost 500W, and all on (which must
be handled) a kilowatt, for a 200 amp 5v supply!

You probably won't need to heat the room.  ;-)

-michael

Music synthesis for 8-bit Apple II's!
Home page:  http://members.aol.com/MJMahon/

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