Hello everyone. I've decided to share the circuit diagram and PCB for a running light system using NE555 and CD4017 microchips. The circuit is well-known, but I've added a small upgrade by fading the LEDs on and off. The circuit is quite easy to replicate and will always find real-life applications. As always, we'll be making it all ourselves, so get comfortable and enjoy.
P.S. You can download the PCB and circuit diagram for replication at this link: https://disk.yandex.ru/d/7iJqWrv7dG1hHQ