Wall Speaker

A speaker to be wall mounted that requires a:

Raspberry Pi Zero W

Adafruit I2S 3W Stereo Speaker Bonnet for Raspberry Pi - Mini Kit
https://www.adafruit.com/product/3346

Gikfun 2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1725
http://a.co/d/c8tgeDM

I was looking for a simple way to play TTS from Home Assistant as well as other sounds such as doorbell, hour chimes, etc. I found Mopidy to be an easy, well documented piece of software that integrated with Home Assistant well.

https://docs.mopidy.com/en/latest/ext/mpd/
https://www.home-assistant.io/components/media_player.mpd/

All of the holes are intended to be M4.