Greet people at your door with a train?

[wallyworld]

You could always get a used Nathan air horn . No mistaking there's someone there. Probably a tape loop hooked to a track relay would be the simplest. An old cheapo tape deck would do.  I imagine you would need a reversing circuit for the train,..but I would use a bump and go trolley.Unless it's inside, some goofy ill bred kid will ring the bell make a grab and dash on arrival.Might want to put one of those red die packs banks use in it. ..I could see the police report now. Lol

[fifedog]

I thought my french maid outfit was enough...a train too?

[Dannyboy6]

Hmmm....how about...take the guts out of a wireless intercom and build one transceiver into one of your cars with the other transceiver inside the house?  Just a thought....

Sounds like a fun project.

http://www.gadgetshack.com/basic-4-channel-wireless-intercom.html

[Boyd]

If I ran a track siding  up to the front door would there be a way to install 2 way audio on one of the cars? As in: door bell rings, run train up to end of siding by front door from inside the house, hit a button and talk to them from inside and hear them reply.