These efforts were made to establish the viability of running
motive power at reduced voltages with small, on-board bat-
teries. The same power is used to provide remote control for
these models.
In the future, I hope to use the same platform to power roving
inspection engines which mix with normal operator-controlled
rail traffic. A small sound module would not be too hard to add,
and I might try that first. I hope this provides you with some
ideas and encouragement to try new ways to power and con-
trol your layout too!