TRAIN DETECTOR with reed switch.

This is fully built and tested and costs $8.00 usd plus $6.50 usd postage.

You will get the module on a Printed Circuit Board. The photo shows the prototype.
It comes with a reed switch on 1500mm lead and two very strong super magnets that fit under two of your locos.
The output goes HIGH when the loco is detected and stays HIGH for 2 seconds to 2 minutes, depending on the setting of the 1M mini trim pot. This is the cheapest and best Train Detector module.  
The output will deliver up to 300mA and the voltage will be about 2-3v lower than the supply voltage due to the losses in the IC.
This module will operate Crossing Lights or lighting at a station or a small motor.
Designed by Colin Mitchell  of Talking Electronic.com
Contact Colin Mitchell      talking   at  tpg.com.au