Robotics : 9469


Robotics / 9469	9468 \| 9470

Subject:	Re: Design wanted: Touch sensor for passing trains
Newsgroups:	lugnet.robotics
Date:	Wed, 29 Dec 1999 13:09:32 GMT
Original-From:	Pete Hardie <pete.hardie@dvsg.sciatl.com!saynotospam!>
Viewed:	728 times

Dave Baum wrote: > Usually for HO scale stuff the IR LED and IR detector are separate pieces > (one on each side of the track). This makes for a nice point-to-point > beam that gets interrupted by a passing car. > > Some find this ugly, so another approach .... hmmm. Why don't they just hide the sensor(s) in trackside terrain, like crossing gates, non-rolling stock, etc? -- Pete Hardie | Goalie, DVSG Dart Team Scientific Atlanta | Digital Video Services Group |

Message is in Reply To:

		Re: Design wanted: Touch sensor for passing trains
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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