I’ve added some supporting graphics to the Throttles page, and have written up most of the Block Switching page.

Pretty soon I’ll start adding the pages which describe in more detail the design of each part of the project.  I’ll put links directly to them at the tops of the existing pages so readers who want to jump straight to the how-to pages can do so easily.

This past week I realized there’s another useful subproject which, although not needed by this project, will eventually become very useful.  That is a Track Speedometer, using a pair of the same sensors I’m using to detect the positions of the trains, but measuring the time between two sensors a known distance apart to calculate and display the train’s speed and direction, in real units (mm/sec) and scale units (km/hr).  More on that later.