Re: How to turn on a light across a room without a wire?

[nobody@xxxxxxxxxxxx (Dave Houston)]

ddl@danlan.*com (Dan Lanciani) wrote:

>If you are somewhat handy with electronics you could cobble something
>together with X10.  Plug a wall wart into the switched outlet and use
>it to activate an X10 RF remote via some combination of relays.  I'd
>have to look at the available X10 remotes to see which could most
>easily be convinced to send single bursts of ON and OFF commands with
>a minimum of external logic.  If you wanted to get really sophisticated
>you could introduce a microcontroller...

Use a capacitor to supply the transmitter after power is switched off. It
will drain quickly and only recharge when power is switched on. Determining
whether power is coming from the outlet or the cap is relatively simple and
that determines whether to send an On or Off.

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