Returning from York, I saw a vendor who had done a whistle smoke upgrade to an o gauge MTH triplex. The smoke intensity would actually change when the whistle tone changed. This was still an engine that appeared to be under DCS control. How is this done? I have some familiarity with the PS2 board as I have done 6 or so successful PS2 steam engine upgrade kits. Can this be done with the 3V PS2 board?
Mike