I have a used Railsounds 2.5 board. Has a number 589-699 on the PCB. Simple testing by pulsing the two outer leads on P5 indicates that the chuff works, bell works, but the "whistle" sounds like a diesal horn.
Also noticed that the on-off switch on P1 did not seem to do anything whether plugged in or not.
No potentiometer on P2 so I jumped the three wires are indicated in the Digital Dynamics 2.5 manual.
Can anyone identify the chip? Also and features it might have other than chuff, bell and weird whistle/horn.
Thanks.
Other board is a Mighty Sound of Steam 3 pin connector. Only number is stamped 2754.
It chuffs on black and brown wire . And both bell and whistle button trigger what I think is a whistle. Not sure what the blue wire does. Or what this board came out of.
Would like to put both in conventional trains.
And what is the chuffer circuit referenced in the Digital Dynamics manual?
I do not need perfect chuffs and was wondering if this would work with a steam loco instead of a micro switch on smoke lever?
Thanks
Fred