(...) That's what a RCX with a extra light sensor is for (or homemade light sensors). Either option beats the pants off how I did my first automatic crossing system- it was a electrical kludge (and I still can't think of a better way to do it- in (...) (21 years ago, 2-Sep-03, to lugnet.org.us.indylug, lugnet.trains)
(...) *snip* You mean RCX w/light sensor as one option and DCC as another option? How would you tie in the logic for it, if not using manual controls via DCC? Just curious. (...) Excellent point - take James' advice on this! Ed (21 years ago, 5-Sep-03, to lugnet.trains)
(...) I've been thinking about this one. In the current state of LDCC, a fully automated and LDCC-integrated (and pure LEGO) crossing gate could look something like this (ASCII art follows): Train presence sensor------+-------+ + RCX 1 | (...) (21 years ago, 7-Sep-03, to lugnet.trains)