Hi Lawrence,
I can't say anything about available cameras for N-scale.? You would think with what they can put in cell phones, that the technology small enough should be doable.
In any event, I'm here to answer your question about using DCC to convert to 5 VDC.? Yes, it can be done.? You will need a bridge rectifier, a capacitor for? a bit of filtering and a voltage regulator like a 7805.
If you wondering if this will fit in an N-scale loco, it will definitely fit in an N-scale dummy; especially if you want that mythical camera!
Allan Gartner
Wiring for DCC
