Re: how to control LED array?

Maxim 7219?

http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1339

Dave


"Michael Noone" <mnoone.uiuc.edu@xxxxxxxxx> wrote in message
news:Xns9642B5D12C99Emnooneuiucedu127001@xxxxxxxxxxxxxxxxx
> Hi - I'm working on a project to make an 8x8 LED array. The idea is that
> the anodes in each row are tied together, and the cathodes in each column
> are attached together, giving me 16 pins which I can control 64 LEDs with.
> But now the only problem is making sure they get the right
current/voltage?
> My plan is to only have one column turned on at any given time, but then
> any number of the 8 LEDs in that column could be on at that time, so
things
> get a little difficult. I could apply 0 and 5V then just have a current
> limiting resistor on each LED, but that would be cumbersome and awkward.
My
> end goal is to be able to drive this with 16 pins from a microcontroller.
> Hopefully I'm being somewhat clear about what I'm asking. Does anybody
have
> any suggestions as to how I could do this? Thanks so much,
>
> Michael J. Noone
>


.

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