FYI, I just posted a photo of the version I built a few months ago. I used LEDs with 3 leads so I can control the red and green separately. Then I was able to use the transistor circuit for each to get brighter colors without loading the gate signal.
Take a look:
David
On Nov 6, 2014, at 5:16 AM, r_j_d_2.phila@... [yamahacs80] <yamahacs80@yahoogroups.com> wrote:thanks guys. all told, it looks like it'd be easier to put it on the KAS board, personally, as it bypasses taking 8 cards out. but as long as both work, then i'd say its 6-1/half dozen-other, right? good info-think i'm gonna tackle this!