Quelltext der Seite Locodoco/Position Tracking

== Intro ==
[[Datei:Locodoco_Irsender_scheme.png|thumb|left|300px|Fig. 1: Waypoint transmitters in the track]]
[[Datei:Locodoco_Irsender_v1_top.jpg|thumb|right|First prototype of the Waypoint transmitter built into the track]]In other model railroad automation systems, track occupation detection is usually done by occupancy detectors that measure the resistance of the two rails - with magnets and reed contacts - or infrared light barriers. These devices either need some additional wiring back to the controller to give feedback or send their information back to the track - however they all aren't as portable and require extensive (and visible) modifications.

Since the [[Locodoco]] onboard decoder for the locos utilizes a radio transmitter anyway, it is possible for a loco to send this piece of information back to the controller itself. The locos are equipped with an infrared transceiver which makes them able to read the codes that the waypoint transmitters emit.