David Meiklejohn wrote:
> The limitation won't be the '887.
>
> You want to multiplex the LEDs in your Connect4, right?  If you multiplex
> the LEDs singly (but I'm not sure how you'd practically wire this, but
> anyway...), each will only be lit for 1/42 of the time.

Exactly, I'll multiplex them one LED at a time. This way, I'll have no 
need for drivers at all. Plus I can work off two AA batteries (i.e. 3 
volts).

Are you definitely sure that the 887 running at 8 MHz will be good 
enough? Would it be noticeably better if I ran it at 20 MHz (but of 
course then I'd need 5 V from somewhere...)

>   So - will they
> still be bright enough, with your current source?  That's the limitation...

I'm still looking for decent 3-pin LED's. My supplier is Farnell and I'm 
having a hard time finding good LED's on their site.

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