The purpose of this project is to create an inexpensive audio player for home assistant that can be plugged into an existing stereo speaker system. With this system, you can also build a simple mono amplified speaker that can be used as a home assistant notifier or, in combination with google home, to either send arbitrary commands to google home (ie: have home assistant send commands to execute google home routines) or respond to media play requests from google home( allowing google home to play media on your much better home stereo speakers).
Home assistant is required to implement this project. Also, nabu casa is recommended if you are using home assistant with google home. See: https://www.nabucasa.com/
The 3d printed case is a remix which I modified to accommodate an esp32, an led and an i2s preamplifier:
Connect the esp32 with the uda1334a using dupont connectors as follows:
ESP32 pin uda 1334a pin led pins
Vin Vin 5V+
GND GND GND
GPIO33 WSEL
GPIO23 DIN
GPIO22 DIN
GPIO19 BCLK
insert into the 3d printed case:
Program the esp32 using esphome.
DONE!
here is a demo:
Connecting a pam 8403 amplifier to the DAC board on pins Lout and Rout allows for a speaker to be connected to create a simple wifi mono powered speaker that can be used as a stand alone media player in home assistant for status announcements or other purposes like a digital radio alarm clock. For this purpose, inexpensive computer speakers can be modfied to hold the electronics.
ie:
For those of you that also have google home, this allows you to use the media player to send verbal TTS commands to google home to control routines etc.
