A working PRR style position light signal in N-Scale ?
My current effort is to make this model available at least for my C&E layout where I
need want to install signal protection on two junctions.
At present I spent more than 150 hours of labor and research into this project, starting back in 2016 with an idea on charlieplexing 16 LEDs needed by a full aspect PL.
With this I could reduce the 16 x 2 wires to only 5 wires for the full mast.
Below are two sample vids
First test with 3 mm LED and individual control :
Second test with 0402 SMD in an scale signal head :