ESP32-S3 Notification Speaker

A compact case designed to house an ESP32-S3 DevKitC-1 paired with a MAX98357A I2S audio amplifier — a low-cost, Wi-Fi-connected notification speaker that integrates with Home Assistant via ESPHome.

The speaker plays WAV files or TTS announcements triggered by Home Assistant automations, making it perfect for doorbell alerts, reminders, or any home notification.

Hardware:

• ESP32-S3 DevKitC-1 (with PSRAM)
• MAX98357A I2S Class D Audio Amplifier (DAC)
• Small 4–8Ω speaker

All ESPHome config, WAV generation scripts, wiring diagrams, and Home Assistant integration files are available on GitHub:
https://github.com/dreed47/sound-files

Feel free to adjust the speaker ohm rating or any other details to match your exact build.