Hi! I have been making a miniature Santa's house out of wood. I premiered it as a Christmas decoration two years ago, and the children loves it. However, I've improved it's functionality since then with diodes representing the fireplace and diodes outside in the (cotton) snow for outdoor lighting. Looking smooth. Unfortunately any diodes inside powered from arduino aren't strong enough to lit up the interior enough for it to look cozy from the outside, so I solved it by placing a battery LED chain inside on the upper walls. I have settled with that as a solution.
I have also hacked a LED tealight so that it's diode is on the outside of the door, with an on/off switch from the inside. Working good. I thought of making everything controllable from an app, but I feel that the kids enjoy turning the outdoor lights on/off manually more. Also the surprise random effect of Santa's presence, because I have programmed the fireplace and outdoor diodes to randomly turn on and off, like when santa is home or away.
Now, the kids suggested improving it with adding a doorbell.
Any ideas for how to pull that off? I thought about an SD card/mp3 shield, but is it possible to trigger it to play when a button is pressed?
Smoke from the chimney was also suggested. Hehe. Any advices or suggestions on that?