You're right -- that's always the case.

In fact, here is the conclusion.....

I "thought" that I had my code at T1200 but it was at N1200.....BUT, I didn't really care anyway because it was my (mis) understanding that as long as BOTH pics were the same, that it didn't mean diddly squat.

After all, it's just inversion isn't it?...and I was using CMOS inverters on my breadboard...so in my mind, I was trying it "both ways". ?

So, anyway, I just changed both sides to T1200 (I know, that was suggested in the first place).....and all is fine.

BUT what am I missing here?

Like I say, when I set up my wired connection, it didn't matter if I used T1200 or N1200....as long as the were both the same.....it worked either way......so, what am I missing here?

What a pisser.

--Michael