Mikado 4501 posted:The RailSounds 2 board needed an extra wire soldered to the chuff input on the CC to get the chuff sounds to work - something you won't need to do on RS4/5 locomotives.
Nicely done, Thomas.
I was curious about how the chuffs were going to work, which is why I asked about it a few posts back. I remembered that the early RailSounds PIC coding from 1995 through mid-1997 (roughly RS25S06 and RS25S12) doesn't recognize a chuff on the serial line. It wasn't until the first wireless tether models (around RS25S24 from late 1997) that a chuff could come from the serial line as well as the hardware switch.
Lastly, note that the board inside your C&O Yellowbelly is definitely RS2.5. For some reason, a bunch of those are mis-labeled on Lionel's website to this day. A true RS2.0 board is a totally different animal.
TRW
