He explains it in his own words in the demo video. The sensor was small enough for an N-gauge train, which translates to 1:148 scale or about 9mm from rail to rail. His idea was to build a tiny ...

The N scale Alco RSD5 from Atlas is now offered with an ESU LokSound V5 sound decoder and an upgraded chassis.

I constructed my first N scale layout in a coffee table in 1976 based on the East Glasstop project railroad series that appeared in Model Railroader from December of 1970 to April of 1971. However, it ...

For those working in the N scale, there’s now an easy way of observing your project as the train driver would see it: [Vassily98] managed to squeeze a wireless camera into an N-scale railcar.

Over nearly 40 years I've built seven train layouts. I started out with N scale, then discovered large scale trains. I've built both indoor and outdoor large scale layouts over the years.