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 | | Re: Design wanted: Touch sensor for passing trains
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| "Carl M. Kadie" <carlk@msn.com> wrote in message news:FnHCMC.KzF@lugnet.com... (...) Thanks for all the suggestions. I've refined my goals a bit: I'd like to use just Lego parts. I don't mind of the sensor is conspicuous. I don't mind modifying the (...) (25 years ago, 29-Dec-99, to lugnet.robotics, lugnet.trains)
| | | | | WAMALUG Meeting and Event Update
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| Hello Everyone, Your WAMALUG Update God here again to inform you of some of our upcoming events! First up, the Official Announcement for the January Meeting. It will be located in Rosslyn VA, and take place on Saturday,January 8, and will begin at (...) (25 years ago, 29-Dec-99, to lugnet.loc.us.md, lugnet.loc.us.dc, lugnet.loc.us.va, lugnet.org.us, lugnet.trains, lugnet.trains.org)
| | | | | Re: Design wanted: Touch sensor for passing trains
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| (...) This would be my suggestion as well, if you want to use a touch sensor. If I recall correctly, they should be robust enough that the weight of the track won't set them off, but the weight of a passing train will. The only thing I'd worry about (...) (25 years ago, 29-Dec-99, to lugnet.robotics, lugnet.trains)
| | | | | shipping time from DYA ?
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| I ordered some stuff from DYA a few weeks ago when the Clubcar and other items were briefly available (I missed the Club Car, but got a few of the other train items). I'm wondering how long it normally takes to receive packages from DYA, 3 weeks, 4 (...) (25 years ago, 29-Dec-99, to lugnet.market.shopping, lugnet.market.shipping, lugnet.trains)
| | | | | Re: Design wanted: Touch sensor for passing trains
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| (...) Hi Carl, I tried some time ago, way before the mindstorms, to use read contacts. The magnets of the wagon/engines will close the contact each time they pass. I guess that the RCX can see this as 0 and 1. With this you can, I imagine, count the (...) (25 years ago, 29-Dec-99, to lugnet.robotics, lugnet.trains)
| | | | | Re: sets: 2126 and 3225
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| (...) I guess you better ask the lugnet.loc.de newsgroup, anyway I saw tons of both two months ago in Frankfurt. Mario Web page: (URL) member page: (URL) member of ItLUG: (URL) (25 years ago, 29-Dec-99, to lugnet.trains)
| | | | | sets: 2126 and 3225
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| Hi, I am wondering whether sets 2126 (Train Cars) and 3225 (Classic Train) are still available in germany? If so, where? I recall that sets are limited editions. Guido (25 years ago, 29-Dec-99, to lugnet.trains)
| | | | | Re: Design wanted: Touch sensor for passing trains
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| (...) My suggestion: Touch: Have the track elevated, and free to move up and down (1 'hinged' joint). Then have your touch sensor below the track. Light: Hard to get accurate, repeatable measurements. If light level changes, requires recalibration. (...) (25 years ago, 29-Dec-99, to lugnet.robotics, lugnet.trains)
| | | | | Re: Design wanted: Touch sensor for passing trains
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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)
| | | | | Re: Design wanted: Touch sensor for passing trains
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| (...) I don't have a design, but I do have a comment, to wit: With a touch sensor you are committing to a fixed dimension SOMEWHERE unless you get quite clever. It may be in the width of the vehicle, it may be in the height, it may be the depth of (...) (25 years ago, 29-Dec-99, to lugnet.robotics, lugnet.trains)
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