(...) Hello, Dean- Light sensors. We have found that a solution based on timing rarely works out in these applications because there are too many variables which muck it up. Check out these images to see how he did it: (2 URLs) Funky, indeed:-) JOHN (18 years ago, 26-Dec-06, to lugnet.trains.org.tcltc, lugnet.trains, lugnet.trains.org, FTX)
(URL) Here> is a video on YouTube showing Ross' preliminary work on adding a third line to our Thomas modules (all being controlled by an RCX). The switches will be hidden; all that will be visible will be the other half of the loop, like (URL) (...) (18 years ago, 23-Dec-06, to lugnet.trains.org.tcltc, lugnet.trains, lugnet.trains.org, FTX)