Re: Sensors for doors & windows & ...

[Chris Hunter <cjhunter@xxxxxxxxxxxx>]

thanks ... & thanks again ...

now, how to make it affordable ... while also leaving the PC free to
do other things !

Chris


On 29 Oct 2007, at 10:04, Frank Mc Alinden wrote:

> Hi Chris
>
> We use something similar to that with Gerry,s  RGBLED Sequencer.....
> The problem is that solution will only let you know which way the
> door is
> moving....you would still need at least one reed switch to say the
> door is
> fully opened or closed as a reference......
>
> Heres the one i use on my Sequencer
> http://tinyurl.com/23ztz3
>
> If  you wanted to know how far the door is opened maybe it would be
> better
> to use an lvdt.....It would have to be recessed into the door frame
> somehow
> ....
>
> HTH
> Frank



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