Signals for Model Trains

Controlling Model Train Signals with Multiple Sensors

Model Train Projects Overview

The model train projects on this site can be sub-divided into 

1. The sensors 

2. The train signals.

3. This folder -Using multiple sensors to control the signals.

4. Transmitting information to the outside world.

Sensors were presented in the folders IR_Sensors and LDR_Sensors while the folder Train Signals discussed signals that were controlled by one sensor only.

This folder is concerned with signals that are controlled by several sensors and displaying/sending the information.

The Projects

LDR_Signals3_Class:    Uses LDR to detect the presence of a model train and set a signal RED. When the train departs the signal will go through a RED-AMBER-GREEN sequence. This page inherits LDR_Sensor_Class and Signals3_Class.

LDR_Signals_RAG_Class:         Class library to read LDR and individually control RED, AMBER and GREEN signals.

Single_Track_Class:       Class/Library to control trains wishing to enter a single block of track from both ends    (Uses LDR sensors)

IR_Single_Track_Class:    Class/Library to control trains wishing to enter One or Two single block(s) of track from both ends    (Uses IR sensors)

IR_Single_Track and IR_Single_Track_Dual. April 2021 replaced with  IR_Single_track_Class: .

Track_Trains:                Client code of LDR_Signals_RAG is enhanced to give RED at first sensor, AMBER at second and return to GREEN at third.

Dsp_Train_State:           Client code of LDR_Signals_RAG is further enhanced to display the state on the Arduino Serial Monitor.

Track_Train_ESP:            Tracks a model train, controls signals and displays status using Arduino Serial Monitor. Uses ESP8266 microcontroller. Uses serial ports for communication. 

Track_Train_ESP_Class:   Converts the Track_Train_ESP into a class to hide the implementation details.

LDR_Ser_Sig3_Ser_Class: Project uses serial input and output interfaces between LDR sensors and 3 aspect signals.  

Delta Layout: Uses relays/switches on 4 sets of points to control 8 signals