gunrunnerjohn posted:Consolidated Leo posted:I don't think that you can get direction from the switches. Maybe from the non-derail part of the switch but that's internal; not available from the posts. That would give you the trigger for direction just like any other isolated track detection method.
Why can't you get the direction from the O22? The switch position lights the corresponding lamp in the controller, a low current relay across those posts should give you the detection that's needed. If it can light a bulb, it can supply a relay.
It's not clear to me that switch position equates to train direction. But if there were an inner loop and an outer loop, and a train in the inner loop is running west while a train in the outer loop is running east, then I would agree. Under those circumstances, switch position would give you the direction indicator to pull this off. But that was not stated by the OP.
