Hi everyone,
I’d like to share my ESP32-based Home Assistant notifier project:
GitHub:
This is a custom PlatformIO firmware project for an ESP32-based Wi-Fi audio notifier / speaker for Home Assistant.
Main features:
- local web UI with separate HTML, CSS, and JavaScript assets
- Wi-Fi station mode with fallback AP configuration mode
- MQTT command and state bridge for Home Assistant
- I2S audio output for MP3 streams, radio streams, and URL-based TTS playback
- OTA update support from GitHub release or manifest URL
- battery voltage monitoring
- OLED status display support
- saved settings in Preferences / NVS
Current documented hardware is based on:
- ESP32-S3 Super Mini
- PCM5102 I2S DAC
- 0.96" I2C OLED
- two TTP223 touch sensors
- buzzer
The project also includes:
- hardware documentation
- circuit diagram
- STL files for the enclosure
- a dedicated firmware profile for Home Assistant media-player use with
bkbilly/mqtt_media_player
This project is not ESPHome — it is a custom modular PlatformIO firmware intended to be buildable and extendable.
I’d be very happy to get feedback, suggestions, and ideas for improvement.
Thanks!