Like most of us, I have more 154 crossing signals than 154C contactors. Since the 154C is hard to find and doesn't work very well anyway, I'd like to build a flasher circuit that can be triggered from an insulated track section. I know that such devices are available commercially, but I'm hoping that someone has already built their own and could help out - both as a learning experience and to save money. Please post if you've built your own, along with a schematic and parts list. Thanks.
I tried searching the forum, but couldn't find anything, so if a thread already exists please post it.
