Seems like you could have one PWM signal driving an NPN on the negative side
and then a small PNP for each bulb on the positive side to drive the
pattern.

DougM

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of
Alan B. Pearce
Sent: Friday, March 16, 2007 3:02 AM
To: Microcontroller discussion list - Public.
Subject: Re: [PIC] Need urgent help with pic code

>The idea is a circuit of 8 channel hi-bright led with a specific pattern.
>When the circuit is powered on, all 8 channels are fade-in slowly for about
>2 seconds (start to illuminate from off state to max bright light) when the
>led are fully on, some pattern is running (any pattern, doesn't matter).
>
>When power off, the led are fade out.

Look in the piclist.com archives for some code by Scott Dattalo for 8 
channel PWM. That will give you the ability to fade in and out. Then you 
just need to do the code for the pattern generation.

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