Page 1 of 1

Can I get Track sensors?

Posted: Thu Jan 21, 2010 12:26 am
by grs
Is there any sort of sensor available that I caould set into the track which will detect a train passing over?
I saw something mentioned in a post somewhere here last week , but I can't find it now.

This in turn would activate scenery, points or anything else electronic through a relay maybe

Re: Can I get Track sensors?

Posted: Thu Jan 21, 2010 12:31 am
by bigbob
Have a look here, think the IR DOT may be what you`re after.

http://heathcote-electronics.co.uk/prodindx.htm

Bob

Re: Can I get Track sensors?

Posted: Thu Jan 21, 2010 2:55 pm
by Martin71
Hi

This might help MASTERswitch Ultimate Detector from dcc concepts.

Link

http://www.dccconcepts.com/index_files/ ... switch.htm

detector

Image


Light dependent resistors before installing.

Image

Just an idea I use it for points, signals lights to run motors etc.

Have a read on his site on what it can do.

Hope that helps

martin

Re: Can I get Track sensors?

Posted: Thu Jan 21, 2010 4:38 pm
by grs
THanks for that. The post I was thinking of was this

http://www.newrailwaymodellers.co.uk/Forums/viewtopic.php?f=7&t=25264&p=311682&hilit=reed#p311682

What I didn't like about the reed switch was that it requires adding a small magnet to the bottom of your locos/rolling stock

Re: Can I get Track sensors?

Posted: Tue Jun 15, 2010 4:50 am
by Roy Low
My n-gauge layout has LDR's (light - dependant resistors) as track sensors. The output is fed to a simple transistor switch, which triggers relays, ( I've had it with transistor power switching)
The way I use these detectors, is to use the shadow of a passing train to cause a change in the resistance, and the relay then triggers a slow start up to preset speed, or a gentle slow down at stations.
This does work, and no doubt the DCC users can use the LDR's too.

Roy Low

Re: Can I get Track sensors?

Posted: Tue Jun 15, 2010 5:03 am
by Essex2Visuvesi
also there are magnet sensors and reed switches tho these need the trains or stock to be fitted with magnets