LEGO SYSTEM Trains : 12641


Trains / 12641	12640 \| 12642

Subject:	Reed sensors are not working very well (or too well?)
Newsgroups:	lugnet.org.ca.vlc, lugnet.trains
Date:	Wed, 25 Jul 2001 22:31:38 GMT
Viewed:	55 times

[I'm cross posting this to trains just in case anyone has a idea or fix.] I've finished the reed sensors for the Trolley line. Work fantastically! I've also finished the reed sensor for the Hogwarts. Not so good. In my tests I used a single car to test the sensor to make sure the magnet couplers did not set off the sensor while the intended one did. Worked well. Now, however I tried a string of cars and AHHH, when two magnets are together they trip the sensor! Most nasty. I'm attempting to dampen the sensors ability while making sure it works for the intended use... If anyone has any ideas how how to identify a train (amongst others) I'm all ears... Dean

Message has 4 Replies:

		Re: Reed sensors are not working very well (or too well?)
(...) Robin, what about putting a magnet on the side of the engine or one of it's cars? If it was on the side and we had a little out building on the straight it would trip it... Possible? Dean (23 years ago, 25-Jul-01, to lugnet.org.ca.vlc)

		Re: Reed sensors are not working very well (or too well?)
(...) Hi Dean, where did you put your sensor? In my automated station I used reed sensors to tell passenger trains (which have to stop) from freight trains. I cased the sensors into hollowed 2x4 bricks and placed them in the side walls of the (...) (23 years ago, 26-Jul-01, to lugnet.org.ca.vlc, lugnet.trains)

		Re: Reed sensors are not working very well (or too well?)
I know this has been covered in the past, but can you point me to info on the reed switch used and implmentation notes. Thanks I'm working on a ping-pong line for a trolley and I'd like to try reed switches. I've had troubles with light sensors and (...) (23 years ago, 26-Jul-01, to lugnet.org.ca.vlc, lugnet.trains)

		Re: Reed sensors are not working very well (or too well?)
(...) I have found that reed switches are very sensitive to the orientation of the magnet and switch. If you lay the reed switch lengthwise along the track, it is sensitive to the couplers between trains, especially between cars where there are two (...) (23 years ago, 7-Aug-01, to lugnet.org.ca.vlc, lugnet.trains)

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