Here is a link to a pretty neat board that will sequence 2 or 3 Aspect Block Signal LED's that are wired common anode. This wiring method is typical of offshore aspect signals such as those sold by wehonest and JTD. This is perhaps a medium challenging build using all through-hole assembly. A Bill of Material is included for both all domestic components, or all offshore including circuit boards. User notes are included to help the builder decide on several different assembly options and methods of use. Many folks contributed ideas and suggestions to this project, including Stan2004, gunrunnerjohn, cjack, RTR12, and Rob Paisley who operates a site called Circuitous. The boards can be ordered easily online using the included Gerber files.
Link to Thread: https://ogrforum.ogaugerr.com/...or-common-anode-leds
Direct link to Post containing the build files:files
Rod