Postwar LionChief Electro-coupler control is now working! See video here: https://youtu.be/2E3mnqfNdRg
When the e-unit was invented 96 years ago you can tell they didn't put much consideration into how hard it would be to manage it using Bluetooth. I wonder why. Now I have to add a few extra detection circuits just to tell the position of the e-unit.
It's certainly fun though. What doesn't help is that I have a section of my e-unit drum that has pretty bad continuity. Hopefully I can fix it.