Hi, Michael. I wonder if you've had any more time to work on this project since the last post?
I came across this thread while doing some preliminary research for a project. We have a yearly AC Gilbert/American Flyer display running November-December, and this year we were hoping to modernize our trains with an Arduino controller. It seems not a lot of people have done this! I am very interested in hearing what you may have learned, and maybe reviving this thread if you're still working. Hope to hear from you!