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Subject: 
Train sensors
Newsgroups: 
lugnet.trains
Date: 
Thu, 28 Aug 2003 00:51:36 GMT
Viewed: 
1040 times
  
Has anybody come across a consistent way of sensing the presence of a LEGO train on a specific section of track? I was just wondering, cos I came across this site and thought it’d be fairly easy to create controllers like these with RCXs (using LDCC lib) if there was a way to sense the position of trains...

ROSCO



Message has 2 Replies:
  Re: Train sensors
 
Reed switches have been used. One discussion: (URL) a discussion on various applications: (...) (21 years ago, 28-Aug-03, to lugnet.trains)
  Re: Train sensors
 
(...) there is one trick you can use to get this to work reliably. The thing you need is to use carbon spray on the wheels so that a resistor of a few M-ohms is created. This will draw enough current for the detector circuit to work. product is (...) (21 years ago, 28-Aug-03, to lugnet.trains)

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