.....for a project for my friends still using DC.  Miniatronics sells a constant intensity light circuit that work very well but uses incandescent bulbs. I would like to substitute LEDs. I do not believe they will work with this circuit as they are polarity sensitive where incandescent bulbs are not.

is there an easy way to do this?  My friends are in O scale so super small size is not an issue.

Thanking you in advance. 

Peter

I think model railroading is best enjoyed in a clean, organized space, and I decided to do some spring cleaning in my hobby room, on my work bench, and in my collection in general to better align with that belief.

Here's how the room looks now:

I have added a downloadable copy of my timetable planner MS Excel spreadsheet to my web page.

If you want to create your own timetable, you can enter a start time for each train, the running time between stations and the dwell time at each station and the spreadsheet will automatically generate a schedule.

Entry grid:

Time Grid: