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Subject: 
Re: "No Contact" Homebrew Train Sensor for Mindstorms
Newsgroups: 
lugnet.trains, lugnet.robotics, lugnet.org.us.nelug
Date: 
Wed, 6 Dec 2000 18:03:10 GMT
Viewed: 
343 times
  
In lugnet.trains, Chris Phillips writes:
> In lugnet.trains, Chris Phillips writes:
> > In lugnet.trains, Larry Pieniazek writes:
> > > Is there a photo that clearly shows the sensor in a fairly tight closeup so
> > > that it can be judged how obtrusive/invisible it is? I skimmed through many
> > > of the photos posted by you, Dave, and Tim but did not see one, although I
> > > may have missed it...
> > 
> > I just looked through my pictures and I was surprised to find that I don't
> > have any that show the sensor.  I will snap a few close-ups tonight...
> 
> I took a few close-ups of the sensor last night, and uploaded them to
> BrickShelf.  Check out:
> 
>   http://www.brickshelf.com/cgi-bin/gallery.cgi?f=2264
> 
> The first picture is the sensor itself with a few "common" objects nearby
> for scale.  The second picture is my reproduction of the exact setup that we
> used the sensor in for the train show last weekend.  The third picture shows
> a better enclosure that I built around the sensor last night, using a 1x2
> plate, a 1x4 plate, and a pair of 2x2 tiles, all in dark grey.  (You should
> be able to discern the construction details of this enclosure from the
> picture.)  The enclosure serves two purposes: (1) hide the offending
> non-LEGO component and butchered cable, and (2) protect the sensor from
> getting snagged in the undercarriage of a passing train.

Chris,  I was just wondering if there was a decline in performance in the
enclosure as opposed to outside of it.  The enclosure looks great!


Eric Kingsley

The New England LEGO Users Group
http://www.nelug.org/



Message has 1 Reply:
  Re: "No Contact" Homebrew Train Sensor for Mindstorms
 
(...) No, there is no apparent decline in the sensitivity of the reed switch when it is encased in LEGO. In fact, the switch that I bought from Radio Shack was originally enclosed in a plastic housing, which I removed to reduce the bulk of the (...) (26 years ago, 7-Dec-00, to lugnet.trains, lugnet.robotics, lugnet.org.us.nelug)

Message is in Reply To:
  Re: "No Contact" Homebrew Train Sensor for Mindstorms
 
(...) I took a few close-ups of the sensor last night, and uploaded them to BrickShelf. Check out: (URL) first picture is the sensor itself with a few "common" objects nearby for scale. The second picture is my reproduction of the exact setup that (...) (26 years ago, 6-Dec-00, to lugnet.trains, lugnet.robotics, lugnet.org.us.nelug)

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