Re: Need Door Bell generator for whole house audio

[Art Todesco <actodesco@xxxxxxxxx>]

I've done it, but it's not pretty.  I
used a miniature Casio keyboard that you
can record a song.  I built a simple
timing circuit with 555 timers.  When you
press the doorbell, the circuit turns on
the intercom and connects all the inside
speakers to the amp.  After a 1/2
second, the Casio is triggered to play the
song.  The second timer shuts the whole
thing down after about 10 seconds.
See, it's not pretty, but it works and
you can hear the doorbell in any room.
As I will probably be selling the house
in about a year, I will probably replace
the Casio with a non-volatile recording
module.  Now, when there is a power
failure, I have to re-program the Casio.

Eric wrote:
> I would like to hook up a door bell generator to the paging input of my
> whole house audio system. The only thing I really need is something that
> will generate a "ding-dong" when a contact is closed. I see some kits on the
> web but I am wondering if anyone has actually done this and what they have
> used. I am looking to buy this in the USA. I could probably wire up a
> circuit with an IC but I don't know who sells this stuff retail, like in a
> Radio Shack or whatever. Please advise. Thanks.
>
>