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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 also like the idea of doing a more formal write-up with pictures,
schematics, and part sources. It shouldn't be a major project at all.
Before I forget to mention this, I got a private e-mail from John Barnes
today in which he reminded me that it is a good idea to wire a 100-ohm
resistor in series with the reed switch to prevent excessive current drain
and also possible damage to the reed switch if it is accidentally connected
to a motor output.
I'll be sure to include this info in my formal write-up.
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21 Messages in This Thread: !["No Contact" Homebrew Train Sensor for Mindstorms -Chris Phillips (5-Dec-00 to lugnet.trains, lugnet.robotics)](/news/x.gif) ![](/news/246.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Eric Kingsley (5-Dec-00 to lugnet.trains, lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Larry Pieniazek (5-Dec-00 to lugnet.trains, lugnet.robotics)](/news/x.gif) ![](/news/246.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Eric Joslin (5-Dec-00 to lugnet.trains, lugnet.robotics)](/news/x.gif)
![](/news/x.gif) ![](/news/28.gif) ![](/news/x.gif) ![](/news/x.gif) ![](/news/68.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Eric Kingsley (5-Dec-00 to lugnet.trains, lugnet.robotics, lugnet.org.us.nelug)](/news/x.gif) ![](/news/46.gif) ![You are here](/news/here.gif) ![](/news/46.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Chris Phillips (6-Dec-00 to lugnet.trains, lugnet.robotics, lugnet.org.us.nelug)](/news/x.gif) ![](/news/46.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Eric Kingsley (6-Dec-00 to lugnet.trains, lugnet.robotics, lugnet.org.us.nelug)](/news/x.gif) ![](/news/46.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Chris Phillips (7-Dec-00 to lugnet.trains, lugnet.robotics, lugnet.org.us.nelug)](/news/x.gif)
![](/news/x.gif) ![](/news/268.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Steven Barile (5-Dec-00 to lugnet.trains, lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Eric Kingsley (5-Dec-00 to lugnet.trains, lugnet.robotics)](/news/x.gif)
![](/news/x.gif) ![](/news/268.gif) ![reed switch w/2^n series resister -Steven Barile (5-Dec-00 to lugnet.trains, lugnet.robotics)](/news/x.gif)
![](/news/x.gif) ![](/news/268.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -James Trobaugh (5-Dec-00 to lugnet.trains, lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Steven Barile (5-Dec-00 to lugnet.trains, lugnet.robotics)](/news/x.gif) ![](/news/246.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -James Trobaugh (5-Dec-00 to lugnet.trains, lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -James Trobaugh (2-Jan-01 to lugnet.trains, lugnet.robotics)](/news/x.gif)
![](/news/x.gif) ![](/news/28.gif) ![](/news/x.gif) ![](/news/x.gif) ![](/news/68.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Michael Gasperi (6-Dec-00 to lugnet.trains, lugnet.robotics)](/news/x.gif)
![](/news/x.gif) ![](/news/68.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Mario Ferrari (6-Dec-00 to lugnet.trains, lugnet.robotics)](/news/x.gif) ![](/news/46.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Tony Hedglen (31-May-01 to lugnet.trains, lugnet.robotics)](/news/x.gif) ![](/news/246.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Jason J. Railton (31-May-01 to lugnet.trains)](/news/x.gif)
![](/news/x.gif) ![](/news/x.gif) ![](/news/68.gif) ![Re: "No Contact" Homebrew Train Sensor for Mindstorms -Chris Phillips (31-May-01 to lugnet.trains, lugnet.robotics)](/news/x.gif)
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