> it would be nice)... so I was thinking if I could just add LED's from the TX
> line of the chip. Does this make any more sense?

(I said this in a previous post, I'll waste a bit of bandwith to
pre-emptively clarify):

At least some of the modules have a line which can be used to drive
external LEDs.  You will have to look into the datasheets for the
details.  My understanding is that you do not want to drive it directly
yourself, as there are specific ways to do it "correctly".  I believe that
this is taken care of exclusively inside the module, and not the support
chip.  I very well may be wrong about this, but I still don't think the
support chip should be driving the LED directly.  Look at the
(peak) current specs of an IR LED.  If you want distance you are going to
want something on the order of the peak amount, and it's probaly an order
of magnitude more than the support chip can sink/source.

Just my $0.02 (not an expert)

-Steve

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