1300

Model railway signals come with lots of wires to connect the LEDs with. This application uses a PIC microcontroller for each signal addressed by a PC.

See the demo (steady hand needs improving):
https://youtu.be/NpMwwf_w5ys
Material attached:
Circuit diagram
Board layout (top and bottom)
C code on request (PIC microcontroller, ccs info compiler compatible)
C# code on request (PC application)