 | | Re: Design wanted: Touch sensor for passing trains —Dave Baum
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| | | FWIW I haven't tried this yet myself, but its very typical to use light sensors for this sort of thing in HO scale model railroading. There are a lot of advantages to "contactless" detection. On the down side, you need to minimize interference from (...) (25 years ago, 29-Dec-99, to lugnet.robotics, lugnet.trains)
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| | | | | Re: Design wanted: Touch sensor for passing trains —Pete Hardie
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| | | | | (...) hmmm. Why don't they just hide the sensor(s) in trackside terrain, like crossing gates, non-rolling stock, etc? (25 years ago, 29-Dec-99, to lugnet.robotics)
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| | | | | Re: Design wanted: Touch sensor for passing trains —Pete Sevcik
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| | | | I have used a magnetic reed switch to detect trains. Glue a small magnet to a lego piece, and mount on the train. Cut a Lego wire in half, and solder a reed switch to the cut end. This detects the train with precision, and is not affected by (...) (25 years ago, 29-Dec-99, to lugnet.robotics)
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| | | | | | RE: Design wanted: Touch sensor for passing trains —Russell C. Brown [RR-1]
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| | | | What about hiding the reed switch in a small electrical brick (like a lighting brick) or a motor casing and hiding the magnet inside another brick? The pair could be a good replacement for the touch switch in imprecise applications like bumpers. -- (...) (25 years ago, 29-Dec-99, to lugnet.robotics)
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