the track in N-scale layouts is 9 mm wide, meaning that the whole system had to fit in just 23 x 20 mm 2, the frontal area of a typical train car. One of the few cameras that fit within that ...
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 ...